{"results":[{"id":"ss_d41384835540d118c72803a6781920db003c9775","title":"Hydraulic Fracturing and Enhanced Recovery in Shale Reservoirs: Theoretical Analysis to Engineering Applications","authors":[{"name":"Hao Yu"},{"name":"Wenlong Xu"},{"name":"Bo Li"},{"name":"Hanwei Huang"},{"name":"Marembo Micheal"},{"name":"Quanzhen Wang"},{"name":"Mengcheng Huang"},{"name":"S. Meng"},{"name":"He Liu"},{"name":"Hengan Wu"}],"abstract":"","source":"Semantic Scholar","year":2023,"language":"en","subjects":null,"doi":"10.1021/acs.energyfuels.3c01029","url":"https://www.semanticscholar.org/paper/d41384835540d118c72803a6781920db003c9775","is_open_access":true,"citations":125,"published_at":"","score":70.75},{"id":"doaj_Regulaci%C3%B3n+de+recursos+naturales+en+proyectos+de+ingenier%C3%ADa+civil+para+el+desarrollo+sostenible","title":"Regulación de recursos naturales en proyectos de ingeniería civil para el desarrollo sostenible","authors":[{"name":"Gabriel Jesús Montúfar Chiriboga"}],"abstract":"\nLa regulación de los recursos naturales en proyectos de ingeniería civil constituye uno de sus principales pilares para el desarrollo sostenible, especialmente en aquellos espacios donde la extracción y uso de recursos como la arena, los sedimentos y los residuos de la construcción son capaces de propiciar altos impactos ambientales. Esta revisión sistemática indaga en investigaciones recientes en gobernanza sobre la extracción de arena, la economía circular de la construcción, las prácticas de dragado, las compras públicas ecológicas y las evaluaciones de impacto ambiental, con el objetivo de determinar alternativas que concilien el avance económico con la protección/conciencia ecológica. Se incorporan veintinueve artículos seleccionados en función de los criterios de inclusión criterios de idoneidad temáticas y robustez metodológica para regiones como Ghana, Malasia, Vietnam y otras partes del mundo. Los resultados destacan que la extracción ilegal de la arena degrada la fertilidad del suelo y las comunidades agrícolas; la economía circular genera menos desperdicio debido al reciclado de materiales; las políticas de compras públicas ecológicas extreman los criterios ambientales aplicados a las licitaciones; y la evaluación de impacto ambiental demanda simplificaciones de los modelos de forma coherente para no provocar un cierto retraso, pero, a la vez, sin limitar una cierta protección.\n","source":"DOAJ","year":2026,"language":"","subjects":["Hydraulic engineering","Environmental engineering"],"url":"https://riha.cujae.edu.cu/index.php/riha/article/view/695","is_open_access":true,"published_at":"","score":70},{"id":"ss_e401e5f022b3cedb4b1645ddb80dbbb718885d8d","title":"Advanced Hydraulic Engineering","authors":[{"name":"S. Haddout"},{"name":"K. L. Priya"}],"abstract":"","source":"Semantic Scholar","year":2025,"language":"en","subjects":null,"doi":"10.1201/9781003530022","url":"https://www.semanticscholar.org/paper/e401e5f022b3cedb4b1645ddb80dbbb718885d8d","is_open_access":true,"published_at":"","score":69},{"id":"doaj_10.2166/wp.2024.046","title":"Identifying potential concerns on surface water resources usage through citizen scientific field investigation in the Province of Antique, Philippines","authors":[{"name":"Taishi Yazawa"},{"name":"Kenn Joshua Geroy Rubite"},{"name":"Princess Eden Macabata-Rubite"}],"abstract":"This research conducted a citizen scientific field investigation and water quality assessment of nine major rivers using only on-site equipment and a smartphone in the Province of Antique, Philippines. Potential issues concerning water resources management in the province were discussed with local governors and citizens while conducting the water sampling and on-site measurement. The results of water quality assessments revealed that some of the rivers have experienced high turbidity, caused by anthropogenic activities such as embankment, sand mining, and dredging. In highly populated basins, such as the Sibalom and Malandog Rivers, a high biochemical oxygen demand level (\u003e7 mg/L) was confirmed by the water quality analysis using an iPhone. Since high consumption of groundwater has already affected the lives of people in the province, surface water usage shifting from groundwater, involving the construction of a facility treating physical and chemical parameters, is needed. The citizen scientific approach employed in this research can provide more realistic insights into local environmental concerns, which would not be possible through quantitative measurements of water quality.\nHIGHLIGHTS\nThe water quality of nine major rivers was assessed in the Province of Antique, Philippines.;\nCitizen scientific field investigation and water quality analysis used only an iPhone and an on-site water quality meter.;\nSome rivers have experienced siltation caused by anthropogenic activities.;\nA high biochemical oxygen demand level was confirmed in highly populated basins.;\nThere is a need for a shift from groundwater to surface water usage.;","source":"DOAJ","year":2024,"language":"","subjects":["River, lake, and water-supply engineering (General)"],"doi":"10.2166/wp.2024.046","url":"http://wpol.iwaponline.com/content/26/4/429","is_open_access":true,"published_at":"","score":68},{"id":"doaj_10.11779/CJGE20230925","title":"Experimental study on seepage characteristics of columnar jointed rock mass with different cross-section shapes","authors":[{"name":"     NIU Zihao 1, 2,      ZHU Zhende 3,      QUE Xiangcheng 3,      XIE Xinghua 4,      JIN Kai 1, 2"}],"abstract":"With the construction and commissioning of major hydropower projects represented by Baihetan of Jinsha River, it is of great significance to clarify the mechanical and seepage characteristics of engineering rock mass under complex stress environment with high confining pressure and high water pressure. Based on the field survey data and the structural characteristics of the columnar jointed basalt of dam foundation, two kinds of columnar joint similar material model samples with different dip angles β, quadrangular prisms and hexagonal prisms, are prepared, and the true triaxial stress-seepage coupling tests are carried out. The test results show that the columnar jointed rock mass with different cross-section characteristics has strong permeability anisotropy, and the permeability coefficient k is positively correlated with β at different loading stages. During the true triaxial loading process, the volume strain εV of the sample can be used as an effective characterization parameter of k. At the volume compression stage, k shows a low level, and at the volume expansion stage k shows a rapid growth trend. The final failure mode of the samples exhibits three typical forms, and the most dangerous failure mode is the structural failure dominated by the shear slip failure of the joint surface, which mainly occurs in the samples with β=45°, 60°. Correspondingly, the lateral support of this kind of rock mass should be strengthened in the construction design of surrounding rock of tunnels and rock mass of dam foundation.","source":"DOAJ","year":2024,"language":"","subjects":["Engineering geology. Rock mechanics. Soil mechanics. Underground construction"],"doi":"10.11779/CJGE20230925","url":"https://www.cgejournal.com/en/article/doi/10.11779/CJGE20230925","is_open_access":true,"published_at":"","score":68},{"id":"doaj_Damage+Strength+Model+of+Soil%E2%80%93Structure+Interface+Based+on+Equivalent+Damage","title":"Damage Strength Model of Soil–Structure Interface Based on Equivalent Damage","authors":[{"name":"Huaixin LI"},{"name":"Changgen YAN"},{"name":"Jiale XIE"},{"name":"Weifeng SUN"},{"name":"Yuling SHI"},{"name":"Zhuolong JIA"}],"abstract":"Objective Pile-soil interaction plays a critical role in slope support engineering. Since the contact surface represents the weakest link in the system, analyzing the influence of the soil shear area on the mechanical properties and the constitutive model of the contact surface between soil and structure enhances the understanding of pile-soil interactions.Methods Three sets of ring-shaped samples are initially cast to evaluate the impact of the soil shear area on the interface strength characteristics between soil and structure. Each sample has a height of 1.00 cm, an outer diameter of 6.12 cm, and inner diameters of 0 cm, 3.50 cm, and 4.98 cm, respectively. Subsequently, corresponding segments of 300-mesh sandpaper are adhered to the sample surfaces using a robust adhesive. The remolded soil is then dried, pulverized, sieved through a 2 mm mesh, and adjusted to a moisture content of 20%. It is cured for 24 hours prior to sample preparation. Different soil-structure interface samples with varying soil shear areas are then fabricated using specially designed equipment, and shear tests are conducted using the electric ZLB-1 strain-controlled direct shear apparatus manufactured by Nanjing Soil Instrument Co., Ltd. The test employs the fast shear method, with a shear rate of 0.8 mm/min and a shear displacement of 7 mm. During the tests, the soil shear area ratio (\u003citalic\u003eρ\u003c/italic\u003e) at the interface between soil and structure is controlled at 0, 0.33, 0.66, and 1.00, with normal stresses of 100, 200, 300, and 400 kPa, respectively.Results and Discussions The peak strength of the soil-structure interface increases linearly with increasing normal stress and soil shear area ratio. The shear area ratio of soil significantly influences the stress-strain curve of the sample. When the soil shear area ratio is \u003citalic\u003eρ\u003c/italic\u003e = 0 or \u003citalic\u003eρ\u003c/italic\u003e = 1.00, the shear stress-displacement curve of the sample exhibits a hardening behavior. Conversely, when the shear area ratio is 0 \u0026lt; \u003citalic\u003eρ\u003c/italic\u003e \u0026lt; 1.00, the curve demonstrates a softening behavior. This primarily occurs because the soil strength exceeds the interface strength between the soil and the structure. Under various soil shear area conditions, the strength at the soil-structure interface initially derives from the soil itself. Once the soil’s shear strength reaches its maximum, the sample’s shear stress is substantially reduced, exhibiting a stress-softening phenomenon. As the soil shear area ratio at the soil-structure interface gradually increases, the shear strength at the interface approaches that of the soil. Consequently, the interface effect leads to a decrease in shear strength compared to that of the soil shear surface. The shear strength of the soil shear surface primarily arises from the interactions between soil particles, including rotation, interlocking, and biting. In contrast, the shear strength at the soil-structure interface comprises two components: one part is generated by the friction, interlocking, and biting between the soil particles and the structure’s surface, while the other arises from the interactions among soil particles near the shear zone on the structure’s surface. During the shear process of the specimen, the proportion of shear strength is contributed by inter-particle shear resistance within the soil, and the interface shear resistance undergoes dynamic changes, exhibiting variability in the shear strength mechanism at the soil-structure interface. The total damage to the soil shear surface results from loading damage, whereas the total damage at the soil-structure interface is divided into equivalent initial damage, loading damage, and coupling damage caused by the interaction of the two. The smaller the soil shear area ratio \u003citalic\u003eρ\u003c/italic\u003e, the greater the equivalent initial damage at the soil-structure interface. By establishing a damage evolution relationship between the soil shear surface and the soil-structure interface, the latter is equated to the soil shear surface with initial damage, describing the influence of soil shear area on the strength characteristics of the interface. Based on the assumption that the strength of both the soil-structure interface and the soil shear surface follows a two-parameter Weibull probability distribution during the shear process of the sample, a damage strength model of the soil-structure interface based on equivalent damage is proposed using statistical damage theory. This model primarily consists of the fitting parameter \u003citalic\u003eB\u003c/italic\u003e, which controls peak strength, and the fitting parameter \u003citalic\u003eC\u003c/italic\u003e, which controls softening characteristics. Compared to the soil shear plane, the pre-set interface leads to significant changes in pores and microcracks during the shear process of the soil-structure interface. Consequently, the total damage to the soil-structure interface is considerably higher than that of the soil shear plane initially, and the macroscopic performance is that the strength of the soil-structure interface is significantly lower than that of the soil shear plane. The proposed model is validated by comparing it with experimental data, demonstrating that it accurately represents both softening and hardening stress-strain behaviors at the soil-structure interface.Conclusions This study explores how the soil shear area influences the mechanical properties of the soil-structure interface and proposes a zero-thickness interface model to predict this behavior, supported by experimental evidence. This model effectively fits the nonlinear relationship at the soil-structure interface under different soil shear area ratios, making it suitable for programmed calculations in finite element software.","source":"DOAJ","year":2024,"language":"","subjects":["Engineering (General). Civil engineering (General)","Hydraulic engineering"],"url":"http://jsuese.scu.edu.cn/thesisDetails#10.12454/j.jsuese.202400274","is_open_access":true,"published_at":"","score":68},{"id":"ss_e3d42076d23ab0b74b700d689570d6c4a2b820bf","title":"Multi-scale failure mechanisms of hydraulic engineering exposed to seasonally frozen salinization environment: Integrating SBAS-InSAR and mechanical experiments.","authors":[{"name":"Zhaoxing Wang"},{"name":"Chen Cao"},{"name":"Qingbo Yu"},{"name":"Qing Wang"},{"name":"Cencen Niu"},{"name":"Jiejie Shen"},{"name":"Kuanxing Zhu"},{"name":"Jing Liu"},{"name":"Mengxia Han"},{"name":"Huicheng Fu"},{"name":"Xun Sun"},{"name":"Weitong Xia"},{"name":"Di Sun"},{"name":"Hang Shu"},{"name":"Yaopeng Ji"},{"name":"Jingyu Xue"},{"name":"Xuehan Shan"}],"abstract":"Constructing hydraulic engineering ensures agricultural development and improves salinization environments. However, in seasonally frozen salinization regions, hydraulic engineering is prone to deformation failure. Leakage from canal raises the regional groundwater level, triggering secondary salinization environmental issues. Exploring the instability mechanisms is thus necessary for hydraulic engineering. Traditional deformation monitoring techniques and soil experiments are constrained by observation scale and timeliness. In this study, Sentinel-1B data from November 2017 to August 2019 were acquired. The small baseline subset (SBAS) InSAR approach was employed to interpret the seasonal deformation characteristics in both the vertical and slope directions of a damaged canal segment in Songyuan, Northeast China. The mechanical properties of saline-alkali soil under varying water contents were quantified by integrating unconfined compression experiment (UCE). In May, as the soil thawed downward, a frozen lenses with poor permeability formed at a depth of approximately 100 cm, causing the accumulation of meltwater and infiltrated precipitation between the frozen layer and the melting layer in the canal. The soil water content at a depth of 80 to 140 cm exceeded 22 %, reaching a threshold for rapid reduction in unconfined compression strength (UCS). Consequently, in spring, the low soil strength between the frozen layer and the melting layer resulted in interface sliding, with a displacement of -133.88 mm in the canal slope direction. Furthermore, the differential projection of freeze-thaw deformation in the slope direction caused continuous creep of the canal towards the free face, with a value of -23.27 mm, exacerbating the formation of the late spring landslide. Integrating InSAR and engineering geological analysis is beneficial for addressing deformation issues in hydraulic engineering. Ensuring the sustainable operation of hydraulic engineering holds important implications for mitigating the salinization process.","source":"Semantic Scholar","year":2023,"language":"en","subjects":["Medicine"],"doi":"10.1016/j.scitotenv.2023.169210","url":"https://www.semanticscholar.org/paper/e3d42076d23ab0b74b700d689570d6c4a2b820bf","is_open_access":true,"citations":9,"published_at":"","score":67.27000000000001},{"id":"ss_38901fe52466cde9c810b144f353daad77a5b733","title":"Causal Analysis of Fall Accidents in Hydraulic Engineering Based on Text Mining and Decision-Making Trial and Evaluation Laboratory and Interpretative Structural Modeling","authors":[{"name":"Xiazhong Zheng"},{"name":"Yicheng Liu"},{"name":"Bo Shao"}],"abstract":"Hydraulic engineering construction safety has become a major concern in engineering sustainability. Fall accidents, as a common type of accident during the hydraulic engineering construction process, have caused physical and fatal injuries and property losses on an individual and societal scale. With a sizable workforce, complex operational structures and demanding construction conditions, hydraulic engineering projects present more pronounced safety management challenges than other infrastructure initiatives. As a result, the risk of accidents, particularly fall accidents, is heightened in this domain. To prevent fall accidents and minimize losses, this study used the investigation reports of 389 cases of fall accidents as the analyzed corpus, and 16 contributing factors of fall accidents were extracted with the utilization of text mining. Accident feature terms were visualized through word clouds and ring bar graphs. The logical relationship among the influencing factors was quantified based on Decision-Making Trial and Evaluation Laboratory and Interpretative Structural Modeling (DEMATEL-ISM). The contributing factors and occurrence mechanism of fall accidents in hydraulic engineering were analyzed by establishing a multilevel hierarchical hybrid model. The results showed that the multilevel hierarchical hybrid model was divided into five levels. Thirteen causal chains were obtained. Chaotic security management, weak safety awareness and an inadequate safety system were the most critical factors, while the remaining eleven transitional factors and four surface factors also contributed significantly to the occurrence of accidents. Human and management factors dominated the overall factor transfer pathway. This study proposes countermeasures to the above-mentioned factors and provides a theoretical basis for the sustainable and safe construction of hydraulic engineering.","source":"Semantic Scholar","year":2023,"language":"en","subjects":null,"doi":"10.3390/w15213810","url":"https://www.semanticscholar.org/paper/38901fe52466cde9c810b144f353daad77a5b733","pdf_url":"https://www.mdpi.com/2073-4441/15/21/3810/pdf?version=1698742941","is_open_access":true,"citations":9,"published_at":"","score":67.27000000000001},{"id":"doaj_https://doi.org/10.31774/2712-9357-2023-13-3-296-313","title":"HYDRAULIC DESIGN OF THE CONTROL STRUCTURE, LOCATED IN THE ILMEN AREA OF THE CASPIAN LOWLAND","authors":[{"name":"Tatyana D. Kartuzova"},{"name":"Natalya A. Shelestova"},{"name":"Alexander A. Tkachev"},{"name":"Dmitry F. Tretyakov"}],"abstract":"Purpose: to solve the problem of conservation and reproduction of fish stocks of valuable commercial fish species in natural reservoirs, on the example of performing one of the tasks of developing a facility for regulating water regime of the ilmen part of the Volga delta. Using the well-known formulas of hydraulics, scientific developments of scientists in the field of hydraulic engineering and a priori information, it is necessary to determine the main parameters of a control structure located on a fishery reservoir in Astrakhan region.\r\nMaterials and methods: a stage-by-stage hydraulic calculation of a tubular control structure that performs the functions of a water outlet was performed: the carrying capacity of the facility during operation in a pressure mode was determined; the main loads influencing the structure underground contour were determined by filtration calculation; a strength calculation of the floor for shear was performed.\r\nResults. A facility to regulate the water regime of the ilmen area of the Volga delta, ilmen, which are places of natural spawning grounds for commercial fish in Astrakhan region has been developed. The task of hydraulic calculation is to determine the conditions for the advancement of the filtration flow under the structure determining the pressure at characteristic points and to define the minimum dimensions of the floor that perceive stably the loads created by this flow.\r\nConclusions. The calculation determined the main dimensions of the floor (length, width of the structure – 46.0; 4.65 m; length, thickness of the apron – 4.54; 0.3 m; length, thickness of the water apron – 4.8; 0.9 m; depth, water apron teeth width – 1.19; 0.40 m; length, thickness of the rear apron – 20.36; 0.6 m; length of the tubular part of the regulator – 16.3 m) taking into account the placement of gates, service and road bridges. The shear stability of the floor and the structure as a whole was determined.","source":"DOAJ","year":2023,"language":"","subjects":["Hydraulic engineering"],"doi":"https://doi.org/10.31774/2712-9357-2023-13-3-296-313","url":"http://www.rosniipm-sm.ru/article?n=1392","is_open_access":true,"published_at":"","score":67},{"id":"ss_a571e2b2480fc8b2ede8d90b17f629292f079536","title":"Intelligent generation method of emergency plan for hydraulic engineering based on knowledge graph – take the South-to-North Water Diversion Project as an example","authors":[{"name":"Xuemei Liu"},{"name":"Hankang Lu"},{"name":"Hairui Li"}],"abstract":"ABSTRACT There are some problems with the traditional emergency plans of hydraulic engineering, such as low digitisation, poor knowledge relevance, insufficient intelligent decision-making, and so on. This paper proposes an intelligent method for generating the hydraulic engineering emergency plan for patrol text based on knowledge graph and machine learning. Firstly, based on the electronic documents of various plans, the knowledge graph of the emergency plan is constructed to realise the high organisation of scattered knowledge, using the skills of knowledge modelling, knowledge extraction, knowledge fusion, and knowledge storage. Then, based on bidirectional encoder representation from transformers (BERT) and bidirectional long-short-term memory with conditional random fields (BiLSTM+CRF), the entity recognition model is constructed to intelligently recognise dangers, projects, parts, and other entities in the patrol text. The Jaccard entity similarity algorithm based on the word2vec model matches the danger entity with the graph danger entities and generates the emergency plan through knowledge retrieval and reasoning. With the performance of the model and the verification of the “Channel Leakage” example, this method has high accuracy in identifying entities (the F1 value is 96.21%) and has high reliability in the generation of emergency plans, which can be applied to the emergency rescue of hydraulic engineering.","source":"Semantic Scholar","year":2022,"language":"en","subjects":null,"doi":"10.1080/27678490.2022.2153629","url":"https://www.semanticscholar.org/paper/a571e2b2480fc8b2ede8d90b17f629292f079536","pdf_url":"https://doi.org/10.1080/27678490.2022.2153629","is_open_access":true,"citations":10,"published_at":"","score":66.3},{"id":"ss_8f255c3a54e03683dd0098cba9e3fedb5d989b25","title":"Distributive hydraulic engineering, cross‐scale landscape planning, and climate change resilience: On the water‐adaptive strategy in the Huai'an–Yangzhou Section of China's Grand Canal","authors":[{"name":"Liyan Xu"},{"name":"Xiao Peng"},{"name":"Hezhishi Jiang"},{"name":"X. An"},{"name":"Xuesong Xi"}],"abstract":"Water system plays a key role in the coupled human‐nature system, and ancient people's experiences to build a water‐adaptative way of life still shed light on human's pursuit for climate resilience today with their innate traditional ecological wisdom. In this paper, taking the Huai'an‐Yangzhou Section of China's Grand Canal, and particularly its hydraulic engineering system as an example, we show the system's success in addressing the multi‐dimensional challenges in a historical geographical context, as well as its landscape‐shaping power across the entire lower Yellow‐Huai River Basin up until today. Therefore, we argue that the system is not merely a hydraulic engineering project, but a cross‐scale adaptive strategy that has deeply impacted generations of people's way of livelihood with its intrinsic resilient nature. We attribute the success to the advantages brought about by the “distributive hydraulic engineering” approach, which is reflected in the ancient Grand Canal‐management, over the “master‐structure dependent” approach which appears to be the common practice in modern hydraulic engineering. For testing the hypothesis, we build complex system models representing the two approaches with the Qingkou Hydraulic Nexus as an example, and by running long‐term simulation, we evaluate the performance of the two approaches with respect to long‐term resilience. We show from a complex network perspective that the former has significant flexibility advantages, and outperforms the former in multi‐goal fulfillment capacities and long‐term resilience especially under a low‐tech, tight resource constraints condition. We conclude the paper with discussions on the implications of the findings, and argue that though with limitations, the traditional ecological wisdom as reflected in the Grand Canal case, with its holistic approach and flexibility design, still sheds lights on today's large‐scale hydraulic engineering projects that pursue a resilient solution for long‐term adaptive survival for the mankind.","source":"Semantic Scholar","year":2022,"language":"en","subjects":null,"doi":"10.1002/rra.3926","url":"https://www.semanticscholar.org/paper/8f255c3a54e03683dd0098cba9e3fedb5d989b25","is_open_access":true,"citations":7,"published_at":"","score":66.21000000000001},{"id":"ss_1104747e7bcf73a6fdca8273b7f41c9d1aac15e4","title":"The Use of Lime for Drainage of Cohesive Soils Built into Hydraulic Engineering Embankments","authors":[{"name":"Maksymilian Połomski"},{"name":"M. Wiatkowski"}],"abstract":"This paper examines whether lime can be used for the drainage of cohesive soils built into hydraulic engineering embankments. It is a common practice, as early as the planning stage, to seek to reduce costs and accelerate work while maintaining the quality of work. Although lime stabilisation is not currently a widely used solution in the hydraulic engineering sector, it can play an important role in the future. Lime stabilisation can be considered an optimal solution as it shortens the embankment construction by eliminating the need to replace the soil when it is over-wet. This paper investigates whether it is possible to apply lime treatment in the forming of hydraulic engineering embankments as well as analyses the efficiency of mechanical soil drainage and compares it against chemical drainage (lime stabilisation) based on the example of the construction of the Szalejów Górny dry flood control reservoir located in south-western Poland. It presents the results of geotechnical investigations carried out during the construction phase and compares them with cases reported in the literature. The observation of the construction process reveals a high efficiency and effectiveness of quicklime (CaO) as a stabiliser in the soil used for reservoir dams. Adoption of this technology made it possible to achieve significantly higher embankment formation rates (max. approx. 14,000 m3/week) than when mechanical drainage was used (max. approx. 11,000 m3/week). It was also noted that the lime stabilisation process was significantly independent of unfavourable weather conditions, resulting in frequent high weekly efficiencies. Geotechnical tests on samples of the lime-stabilised soil built into the dam body confirmed the possibility of obtaining favourable strength parameters, particularly with regard to the angle of internal friction, cohesion and degree of plasticity. Therefore, it can be expected that lime will be used more widely in the formation of hydraulic engineering embankments and that soil stabilisation technology will be applied more frequently.","source":"Semantic Scholar","year":2022,"language":"en","subjects":null,"doi":"10.3390/w14223700","url":"https://www.semanticscholar.org/paper/1104747e7bcf73a6fdca8273b7f41c9d1aac15e4","pdf_url":"https://www.mdpi.com/2073-4441/14/22/3700/pdf?version=1668586693","is_open_access":true,"citations":7,"published_at":"","score":66.21000000000001},{"id":"doaj_10.3390/rs14194758","title":"A Novel Slow-Growing Gross Error Detection Method for GNSS/Accelerometer Integrated Deformation Monitoring Based on State Domain Consistency Theory","authors":[{"name":"Ao Sun"},{"name":"Qiuzhao Zhang"},{"name":"Zhangjun Yu"},{"name":"Xiaolin Meng"},{"name":"Xin Liu"},{"name":"Yunlong Zhang"},{"name":"Yilin Xie"}],"abstract":"The accuracy and integrity of structural deformation monitoring can be improved by the GNSS/accelerometer integrated system, and gross error detection is the key to further improving the reliability of GNSS/accelerometer monitoring. Traditional gross error detection methods assume that real-state information is known, and they need to establish state iterators, which leads to low computational efficiency. Meanwhile, in multi-sensor fusion, if the sampling rates are different, the change in the dimension of the observation matrix must be considered, and the calculation is complex. Based on state-domain consistency theory, this paper proposes the State-domain Robust Autonomous Integrity Monitoring by Extrapolation (SRAIME) method for identifying slow-growing gross errors for GNSS/accelerometer integrated deformation monitoring. Compared with the traditional gross error detection method, the proposed method constructs state test statistics based on the state estimated value and the state predicted value, and it directly performs gross error identification in the state domain. This paper deduces the feasibility of the proposed method theoretically and verifies that the proposed method does not need to consider the dimension change of the observation matrix in gross error detection. Meanwhile, in the excitation deformation experiments of the Suntuan River Bridge in Anhui and the Wilford Bridge in the United Kingdom, the slow gradient of the slope was added to the measurement domain, and the traditional AIME method and the method proposed in this paper were adopted for the gross error identification of the GNSS/accelerometer fusion process. The results demonstrate that both methods can effectively detect gross errors, but the proposed method does not need to consider the dimensional change in the observation matrix during the fusion process, which has better applicability to GNSS/accelerometer integrated deformation monitoring.","source":"DOAJ","year":2022,"language":"","subjects":["Science"],"doi":"10.3390/rs14194758","url":"https://www.mdpi.com/2072-4292/14/19/4758","is_open_access":true,"published_at":"","score":66},{"id":"doaj_10.3390/wevj13080138","title":"Numerical Simulation of Cooling Plate Using K-Epsilon Turbulence Model to Cool Down Large-Sized Graphite/LiFePO\u003csub\u003e4\u003c/sub\u003e Battery at High C-Rates","authors":[{"name":"Satyam Panchal"},{"name":"Krishna Gudlanarva"},{"name":"Manh-Kien Tran"},{"name":"Münür Sacit Herdem"},{"name":"Kirti Panchal"},{"name":"Roydon Fraser"},{"name":"Michael Fowler"}],"abstract":"In this paper, an analogous study of the velocity and temperature profiles inside microchannel cooling plates (with hydraulic diameter of 6 mm), placed on a large pouch-type LiFePO\u003csub\u003e4\u003c/sub\u003e battery, is presented using both the laboratory and simulation techniques. For this, we used reverse engineering (RE), computed tomography (CT) scanning, Detroit Engineering Products (DEP) MeshWorks 8.0 for surface meshing of the cold plate, and STAR CCM+ for steady-state simulation. The numerical study was conducted for 20 A (1C) and 40 A (2C) and different operating temperatures. For experimental work, three heat flux sensors were used and were intentionally pasted at distributed locations, out of which one was situated near the negative tab (anode) and the other was near the positive tab (cathode), because the heat production is high near electrodes and the one near the mid body. Moreover, the realizable \u003ci\u003ek\u003c/i\u003e-ε turbulence model in STAR CCM+ is used for simulation of the stream in a microchannel cooling plate, and the computational fluid dynamics (CFD) simulations under constant current (CC) discharge load cases are studied. Later, the validation is conducted with the lab data to ensure sufficient cooling occurs for the required range of temperature. The outcome of this research work shows that as C-rates and ambient temperature increase, the temperature contours of the cooling plates also increase.","source":"DOAJ","year":2022,"language":"","subjects":["Electrical engineering. Electronics. Nuclear engineering","Transportation engineering"],"doi":"10.3390/wevj13080138","url":"https://www.mdpi.com/2032-6653/13/8/138","is_open_access":true,"published_at":"","score":66},{"id":"ss_72327d2fd921f9239b07d3fb3b113932602cb3ff","title":"Hydraulic Engineering of Dams","authors":[{"name":"W. Hager"},{"name":"A. Schleiss"},{"name":"R. Boes"},{"name":"M. Pfister"}],"abstract":"","source":"Semantic Scholar","year":2020,"language":"en","subjects":["Engineering"],"doi":"10.1201/9780203771433","url":"https://www.semanticscholar.org/paper/72327d2fd921f9239b07d3fb3b113932602cb3ff","is_open_access":true,"citations":40,"published_at":"","score":65.2},{"id":"ss_e3d0704524fd85925f17e883fc26adc2a6442b34","title":"Hydraulic engineering of dams","authors":[{"name":"B. Crookston"},{"name":"S. Erpicum"}],"abstract":"Hydraulic engineering is the application of hydraulic science to problems dealing with water management and use. In this discipline, dams and reservoirs and their appurtenant (or ancillary) structu...","source":"Semantic Scholar","year":2021,"language":"en","subjects":["Engineering"],"doi":"10.1080/00221686.2021.1944927","url":"https://www.semanticscholar.org/paper/e3d0704524fd85925f17e883fc26adc2a6442b34","is_open_access":true,"citations":4,"published_at":"","score":65.12},{"id":"ss_abf43e4791d59989e34389f8644f3c65f7d30fcb","title":"Numerical and Data-Driven Modelling in Coastal, Hydrological and Hydraulic Engineering","authors":[{"name":"Fangxin Fang"}],"abstract":"This special issue aims at exploring advanced numerical techniques for real-time prediction and optimal management in coastal and hydraulic engineering [...]","source":"Semantic Scholar","year":2021,"language":"en","subjects":["Environmental Science"],"doi":"10.3390/W13040509","url":"https://www.semanticscholar.org/paper/abf43e4791d59989e34389f8644f3c65f7d30fcb","pdf_url":"https://www.mdpi.com/2073-4441/13/4/509/pdf?version=1614248780","is_open_access":true,"citations":4,"published_at":"","score":65.12},{"id":"doaj_10.2166/nh.2021.179","title":"Detecting the dominant contributions of runoff variance across the source region of the Yellow River using a new decomposition framework","authors":[{"name":"Jingkai Xie"},{"name":"Yue-Ping Xu"},{"name":"Yuxue Guo"},{"name":"Yitong Wang"}],"abstract":"Quantifying the contributions of climatic variables to runoff variance is still a great challenge to water resource management. This study adopted an extended Budyko framework to investigate the effects of terrestrial water storage changes (ΔS) on runoff variance across the source region of the Yellow River, China, during the period of 2003–2014. A new decomposition framework based on the extended Budyko framework was proposed to effectively quantify the contributions of different climatic variables including precipitation, PET and ΔS to runoff variance. The results demonstrated that the extended Budyko framework showed a better performance in presenting the water and energy balance than the original Budyko framework, especially at fine time scales. Meanwhile, the variance in runoff estimated by the new decomposition framework was close to that of runoff observations, indicating that this framework can effectively capture the variation in runoff during 2003–2014. It was also found that precipitation was the most important factor that contributed to runoff changes, while PET made a slightly smaller contribution compared to precipitation. Notably, the results also emphasized the important effects of ΔS on runoff variance at fine time scales, which was useful to better understand the interactions between atmospheric and hydrological processes for regions. HIGHLIGHTS \nA new decomposition framework was proposed to effectively quantify the contributions of different climatic variables to runoff variance.;\nPrecipitation was the most important factor that contributed to runoff changes, while PET made a slightly smaller contribution compared to precipitation.;\nThe important effects of ΔS on runoff variance at fine time scales can not be neglected.;","source":"DOAJ","year":2021,"language":"","subjects":["River, lake, and water-supply engineering (General)","Physical geography"],"doi":"10.2166/nh.2021.179","url":"http://hr.iwaponline.com/content/52/5/1015","is_open_access":true,"published_at":"","score":65},{"id":"doaj_10.13522/j.cnki.ggps.2020378","title":"Effects of Magnetization Irrigation on Photosynthesis, Mineral Elements and Yield of Lettuce Vary with Water Sources","authors":[{"name":"WANG Xiaofan"},{"name":"WU Yong"},{"name":"ZHANG ZHONG Lili"},{"name":"GUO Rui"},{"name":"WANG Lixue"}],"abstract":"【Background and Objective】 Magnetizing the water prior to irrigation is a new technology developed over the past decades in China. The objective of this paper is to investigate how different irrigation water sources alter the effects of the magnetization on photosynthesis, physiological and biochemical characteristics, as well as the yield of lettuce. 【Method】 The experiment was conducted in a solar greenhouse with the Italian lettuce taken as the model plant. It consisted of non-magnetization (M0) and magnetization (M1); added to these are three irrigation water sources: fresh water (T1), reclaimed water (T2) and saline water (T3). Overall, there were six treatments which were arranged in the greenhouse by a randomized block design. For each treatment, we measured the net photosynthetic rate, transpiration rate, antioxidant enzyme activity, mineral element, yield and water use efficiency of the lettuce. 【Result】 Effects of the three water sources after magnetization on crop growth were different. For a given water source, there was no significant difference in the net photosynthetic rate between magnetization and non-magnetization in the early and late growth stage, but in the middle growth stage the magnetized fresh water and the reclaimed water increased the net photosynthetic rate of the crop by 11.16% and 14.73%, respectively. Saline water irrigation reduced the net photosynthetic rate at significant level, and there was no significant difference in net photosynthetic rate between the fresh water and reclaimed water irrigation. Magnetizing the fresh water, reclaimed and saline water increased the transpiration rate, despite not at significant, but they significantly boosted the activities of SOD by 18.08%, 12.77% and 14.68% respectively, the activities of POD by 20.97%, 18.14% and 16.99% respectively, and the activities of CAT by 22.54%, 23.09% and 18.55% respectively. In the meantime, magnetizing the fresh water and the reclaimed water increased the total nitrogen in the lettuce leaves by 7.71% and 6.83%, respectively. Magnetization also altered the content of P, Ca, Mg, Na and K in the leaves, with the alterations varying with water sources. For yield, magnetizing the fresh and the reclaimed water increased the yield by 9.42% and 10.15% at significant level, respectively, magnetizing the saline water did not lead to a noticeable change in the yield. M1T1 was most effective in improving yield and the above-ground dry mass, whereas M0T3 was the least effective. Compared with M0T3, M1T1 increased the yield and the above-ground dry mass by 33.44% and 31.29%, respectively. Depending on water sources, magnetization could also increase water use efficiency by 5.03%~11.65%. 【Conclusion】 Magnetizing the water in irrigating lettuce was beneficial to its physiological and biochemical activities such as photosynthesis and antioxidant enzyme activity, thereby increasing yield and water use efficiency. But the improvement depends on water sources. In our study, magnetizing the fresh water and the reclaimed water was more effective than the saline water.","source":"DOAJ","year":2021,"language":"","subjects":["Agriculture (General)","Irrigation engineering. Reclamation of wasteland. Drainage"],"doi":"10.13522/j.cnki.ggps.2020378","url":"https://www.ggpsxb.com/jgpxxben/ch/reader/view_abstract.aspx?file_no=20210306\u0026flag=1","is_open_access":true,"published_at":"","score":65},{"id":"ss_79079a3180a7c5e2f92edf44fc82d3deb64e67e2","title":"Urban Hydraulic Engineering","authors":null,"abstract":"","source":"Semantic Scholar","year":2021,"language":"en","subjects":null,"doi":"10.5040/9781350155879.ch-003","url":"https://www.semanticscholar.org/paper/79079a3180a7c5e2f92edf44fc82d3deb64e67e2","is_open_access":true,"published_at":"","score":65}],"total":9001742,"page":1,"page_size":20,"sources":["CrossRef","DOAJ","Semantic Scholar"],"query":"Hydraulic engineering"}