A New Method to Improve the Fracturing Effect of Coal Seams by Using Preset Slots and Induced Stress Shadows by Li Li, Lei Zhou, Honglian Li, Binwei Xia, Junping Zhou

“…In this study, we propose a novel method to create a complex fracture network in underground coal mines with the integration of multiple hydraulic slotting and hydraulic fracturing. In this method, hydraulic slots are used to direct hydraulic fractures and initialize branch fractures, while hydraulic fracturing is used to extend the fractures. …”
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Design and Simulation of Cam Pressurized CVT by Hao Jianjun, Liu Yunyun, Lan Jiashui, Xiong Feng

“…Aiming at the problems of the current CVT actuated by hydraulic control system,such as high energy consumption,complicated control systems,speed ratio and transmission ability being limited by metal belt axial deflection,a new designed cam pressurized CVT hydraulic system is proposed,which is composed of cam automatic pressurized device and closed hydraulic system.The cam pressurized device automatically provides most of the clamping force,the closed hydraulic control system provides the auxiliary clamping force and changes the speed ratio.The new designed hydraulic control system with simple-structure can leave out expensive reversing values and reduce overflow loss,therefore it has advantages of less component parts,energy conservation,environmental protection and low cost.The structure design and working principle of the CVT system are introduced,and the simulation analysis is carried out by using the Matlab/Simulink software.The simulation results show that the cam pressurized CVT hydraulic control system has the significant advantages of fast dynamic response,stable performance and so on.…”
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Permeability Characteristics of Tailings considering Chemical and Physical Clogging in Lixi Tailings Dam, China by Zengguang Xu, Xuemin Yang, Junrui Chai, Yuan Qin, Yanlong Li

“…For physical clogging, a higher hydraulic gradient could result in a larger extent of decrease in the permeability coefficient. …”
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Fracturing simulation with different perforation positions at deep coal seam and roof/ floor rock — case study at the No.8 deep coal seam of a gas field in the Ordos basin by Dong XIONG, Jiayuan HE, Xinfang MA, Zhaoliang QU, Tiankui GUO, Shiyu MA

“…The hydraulic fractures in both mudstone and coal are extended in length. …”
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Investigation of Rotating Stall Phenomenon and Optimization in Mixed-Flow Waterjet Propulsion Device by Can Luo, Di Zhang, Congcong Zhang, Shuaihao Lei, Chenzhi Xia, Chuan Wang, Li Cheng

“…The numerical simulated hydraulic performance was compared with experimental results so that the reliability of the CFD method was verified. …”
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Determination of Internal Erosion and Permittivity of Biopolymer-Added Geosynthetic Clay Liners by Hakkı Oral Özhan

“…Geosynthetic clay liner (GCL) can be used as a lining material in freshwater reservoirs due to its very low hydraulic conductivity. The high amount of water that can be collected on top of a GCL might force the bentonite in the GCL to be extruded out of the geotextiles and as a result, the sudden increase in the hydraulic conductivity might cause the GCL to loose its hydraulic capability. …”
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Seepage Property of Crushed Mudstone Rock in Collapse Column by Bo-Yang Zhang, Zhi-Bin Lin

“…The results indicate that the permeability of specimen increases with the particle size, porosity, and hydraulic pressure. It can be known from the comparative experiments of progressive hydraulic pressure on one specimen and variable hydraulic pressure on different specimens with constant particle size and porosity that more fine particles leak out from the specimen with repeated application of hydraulic pressure on one specimen. …”
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Experimental study on the effect of ion transmission mode on the calcium leaching rate of cementitious materials by Shihao An, Chunmeng Jiang, Shuangxi Li, Chong Shi

“…The long-term calcium leaching in hydraulic concrete causes the dissolution of its internal calcifications, resulting in the formation of a porous and loose cement structure. …”
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Modeling of Two-Phase Flow in Rough-Walled Fracture Using Level Set Method by Yunfeng Dai, Zhifang Zhou, Jin Lin, Jiangbo Han

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Deformation of the Geocell Flexible Reinforced Retaining Wall under Earthquake by Yalin Zhu, Kun Tan, Yin Hong, Ting Tan, Manrong Song, Yixian Wang

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Numerical Modeling of Soil Evaporation Process and Its Stages Dividing during a Drying Cycle by Jiangbo Han, Jin Lin, Yunfeng Dai

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Mineralization Process of Biocemented Sand and Impact of Bacteria and Calcium Ions Concentrations on Crystal Morphology by Guobin Xu, Yang Tang, Jijian Lian, Yue Yan, Dengfeng Fu

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Characterization of the Droplet Population Generated by Centrifugal Atomization Nozzles of UAV Sprayers by Fábio Henrique Rojo Baio, Job Teixeira de Oliveira, Marcos Eduardo Miranda Alves, Larissa Pereira Ribeiro Teodoro, Fernando França da Cunha, Paulo Eduardo Teodoro

“…The objective of this study was to characterize the droplet population generated by hydraulic nozzles and centrifugal atomization nozzles used in sprayers mounted on remotely piloted aircraft (RPA). …”
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Climate change causes reductions in fish habitat suitability in Loktak Lake, India by Vicky Anand, Bakimchandra Oinam, Sebastian Schwindt, Stefan Haun, Silke Wieprecht

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The Effects of Controlled Drainage on N Concentration and Loss in Paddy Field by Bin Lu, Guangcheng Shao, Shuang’en Yu, Shiqiang Wu, Xinghua Xie

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Nonlinear Simulation and Vulnerability Analysis of Masonry Structures Impacted by Flash Floods by Qi Fang, Shuguang Liu, Guihui Zhong, Hong Zhang, Jiyu Liang, Yiwei Zhen

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Groundwater Potential Assessment Using Integrated Geospatial and Analytic Hierarchy Process Techniques (AHP) in Chemoga Watershed, Upper Blue Nile Basin, Ethiopia by Samuel Berihun Kassa, Fasikaw Atanaw Zimale, Arega Mulu, Tadege Aragaw Worku, Mindesilew Lakew Wossene, Taye Minichil Meshesha, Yoseph Buta Hailu, Tadele F. Aman, Mekash S. Kifelew, Habtamu Asrat Mekonnen

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Corrigendum to “A Fuzzy Clustering Logic Life Loss Risk Evaluation Model for Dam-Break Floods” by Yantao Zhu, Xinqiang Niu, Chongshi Gu, Bo Dai, Lixian Huang

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Database for a temperature model along urban Dâmbovița River by Gogoașe Nistoran Daniela-Elena, Ionescu Cristina Sorana, Opriș Ioana, Simionescu Ștefan-Mugur, Copilău Cristian

“…The paper examines the characteristic values of the hydraulic and atmospheric parameters necessary to set up a hydro-thermal deterministic model along urban Dâmbovița River in Bucharest City, Romania. …”
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Research on the Overtopping-Induced Breaching Mechanism of Tailings Dam and Its Numerical Simulation by Zhao Deng, Shiqiang Wu, Ziwu Fan, Zhikun Yan, Jingxiu Wu

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