Results 1 to 10 of about 34,203 (251)

Stability analysis of slope based on the coupling of well-point dewatering and chemical improvement slope stabilization. [PDF]

PLoS ONE
This study investigates the impact of coupling well-point dewatering with chemical improvement slope stabilization configurations on slope stability.
Shaoqiang Chai, Haidong Tu, Fengbo Dong, Deying Tang, Dingjie Tan, Qiumeng Yuan   +5 more
doaj   +2 more sources

Study on static expansive fracturing for pressure relief and rockburst prevention in coal seam boreholes [PDF]

Scientific Reports
Addressing the insufficient pressure relief in the deep coal mass and the deterioration of the surrounding rock bearing structure due to increased borehole diameter in conventional borehole pressure relief techniques, a static expansive fracturing method
Wenyu Lyu, Xinxin Zhou, Zhenhua Ouyang, Yongping Wu, Panshi Xie, Ru You, Haiyang Yi, Jian Liu, Ningbo Zhang   +8 more
doaj   +2 more sources

Real-time prediction method of borehole stability

Petroleum Exploration and Development, 2008
Based on the close relationship between seismic and logging information, a real-time prediction model of borehole stability is established using seismic, logging, and geological data to control borehole wall sloughing instability.
Chao WU, Mian CHEN, Yan JIN
doaj   +2 more sources

Rock mass integrity evaluation method of roadway surrounding rock mass based on borehole image acoustic radar data [PDF]

Scientific Reports
The integrity of the roadway surrounding rock is directly related to the safety and stability of the mine, and it is of great significance to carry out a rapid evaluation method for the surrounding rock integrity of the coal mine roadway during the ...
Wang Jinchao, Han Zengqiang, Wang Chao, Zhang Guohua, Li Xiaobin   +4 more
doaj   +2 more sources

Research on Evolution Characteristics of Shale Crack Based on Simultaneous Monitoring of Multi-Parameters

Applied Sciences, 2022
Meso-crack evolution mechanism of shale is a key factor affecting the mechanical properties of shale. In order to explore evolution laws of cracks in shale during loading, a meso-crack monitoring system, loading test equipment and an automatic ultrasonic
Qiao Chen, Fenglin Xu, Pengcheng Su, Honglin Zhu, Yifang Zhang, Yang Liu, Dongming Jia, Xiaozai Guo, Jilong Chen, Dunlong Liu   +9 more
doaj   +1 more source

Numerical Simulation on Borehole Instability Based on Disturbance State Concept

Energies, 2022
This paper carries out a study on the numerical simulation of borehole instability based on the disturbance state concept. By introducing the disturbance damage factor into the classical Mohr–Coulomb yield criterio, we establish a finite element hydro ...
Daobing Wang, Zhan Qu, Zongxiao Ren, Qinglin Shan, Bo Yu, Yanjun Zhang, Wei Zhang   +6 more
doaj   +1 more source

Analytical and Numerical Estimation of Fracture Initiation and Propagation Regions around Large-Diameter, Deep Boreholes for Disposal of Long-Lived Intermediate-Level Waste

Energies, 2022
The safety of high-level radioactive waste disposal has been studied across the world considering mined geologic repositories. Here, we introduce large-diameter, deep borehole disposal as one of the potential solutions for small volumes of long-lived ...
Jingyu Shi, Baotang Shen, Manoj Khanal, Dirk Mallants   +3 more
doaj   +1 more source

Low speed grinding and hang sidetracking branch technology for near horizontal directional hole in coal mine

Meikuang Anquan, 2022
The branch hole is the key to ensure the long-distance drilling of directional hole along the target stratum, improve the coverage of directional drilling and accurately explore geological abnormal bodies.
FANG Jun
doaj   +1 more source

Study on the influence of drilling fluid filtration on stability of coalbed wellbore

Meikuang Anquan, 2021
Coal rock has many porous characteristics, such as cleavage, pore and so on. Drilling fluid is easy to invade into coal bed rock, which is easy to cause wellbore instability.
ZHANG Yi, CHEN Dong, ZHANG Hui, LIU Mengmeng, LIU Fu, WEI Kai
doaj   +1 more source

Coordinated control technology for anti-impact pressure relief of mining roadway and large deformation of surrounding rock

Meikuang Anquan, 2023
The mining roadway under complex conditions was taken as the project background in No.3305 working face of Yiqiao Coal Mine, and the research on the coordinated control was carried out for anti-impact pressure relief and surrounding rock deformation on ...
GU Shitan, CHEN Changpeng, HAN Chuanlei, RONG Weitao
doaj   +1 more source