Results 51 to 60 of about 2,809 (148)

Application of distributed fiber-optic sensing in mining pressure and overburden monitoring in three-dimensional similarity simulation experiments

Frontiers in Earth Science
The manifestation of mining pressure and overburden deformation in mining fields is one of the critical issues that cannot be avoided in the safe and efficient extraction of coal.
Xiaoliang Liu, Qiang Yuan, Qian Jiang, Qian Jiang, Jun Song, Jingfeng Qin, Zhu Chen, Xinkuan Bai   +7 more
doaj   +1 more source

System and engineering practice of coal mining technology under buildings, water bodies and railways in China

Meitan kexue jishu
There is a large amount of coal resources that are difficult to mine due to buildings, water bodies and railways in China. Conducting research on coal mining technology and liberating pressed coal under building, water body and railways are significant ...
Wenbing GUO, Yuhang HU, Chaoqun HU, Longxiang LI, Dongtao WU, Zhibo GE   +5 more
doaj   +1 more source

Study on the Overburden Failure Law of Extra-Thick Coal Seam Mining Under Extremely Thick Conglomerate Strata

Applied Sciences
This study investigates the mining-induced overburden failure and the development law of the water-conducting fracture zone under key layer control during the extraction of an extra-thick coal seam (thickness ≥ 8 m) under extremely thick conglomerate ...
Sun Binyang, Hu Xiongwu, Fu Maoru
doaj   +1 more source

Inertia force-displacement method for seismic analysis of shallow buried underground structures

Yantu gongcheng xuebao, 2018
As for the existing practical methods for seismic analysis of underground structures, including seismic coefficient method, free-field racking deformation method, flexible coefficient method, response displacement method, response acceleration method and
DU Xiu-li , XU Zi-gang , XU Cheng-shun , LI Yang
doaj   +1 more source

Integrative solution of stress evolution in overburden roof strata during the coal seam mining by application of complex variable functions methodology

Rock Mechanics Bulletin
Large-scale roof collapse is a major dynamic hazard threatening the safe coal mine operations. Understanding the deformation and failure characteristics of overburden rock strata, as well as deciphering the stress evolution mechanism of overburden rock ...
Yinkai Li, Hongwei Wang, Zhanbin Zhu, Daixin Deng, Naisheng Jiang   +4 more
doaj   +1 more source

Dynamic Simulation Research of Overburden Strata Failure Characteristics and Stress Dependence of Metal Mine

Journal of Disaster Research, 2015
This study models the relationship between dynamic stress and dynamic failure characteristics in the extremely complex geological setting of a metal mine. The study also discusses the relationship between dynamic failure characteristics and dynamic stress in the case of mining disturbance of overlying rock mass is also discussed from the micro and ...
Kang Zhao, Zhongqun Guo, Youzhi Zhang
openaire   +1 more source

Failure Characteristics and Evolution Law of Overburden Structure Under Repeated Mining of Close‐Distance Coal Seam Group in Ningdong Mining Area

Energy Science & Engineering
It is difficult to control the mine pressure in the coal face under the close coal seam group. On the basis of the mining background of 4‐1#, 4‐2#, and 4‐3# coal seams in the I01 mining area of the Ningdong mining area, the fracture characteristics and ...
Shilin Song, Xuesheng Liu, Yunliang Tan, Xuebin Li, Shenglong Yang, Yu Zhang   +5 more
doaj   +1 more source

System reliability analysis of bedrock-soil layer slopes subject to seismic action based on the upper bound limit analysis method

Geomatics, Natural Hazards & Risk
Bedrock-soil layer slopes (BSLSs) are widely distributed in nature. The existence of the interface between bedrock and soil layer (IBSL) affects the failure modes of the BSLSs, and the seismic action makes the failure modes more complex.
Qiangshan Yu, Yingbin Zhang, Dejian Li, Qiang Chen, Lirong Lin, Shihao Zhang, Wentao Jia   +6 more
doaj   +1 more source

Using the Magnetotelluric Method for Detecting Aquifer Failure Characteristics under High-Intensity Mining of Thick Coal Seams

Energies, 2019
In the ecologically fragile mining area of northwest China, high-intensity mining has seriously affected the aquifer and surface eco-environment. In order to better implement water-preserved mining in ecologically fragile areas, the aquifer failure ...
Erhu Bai, Wenbing Guo, Dongsheng Zhang, Yi Tan, Mingjie Guo, Gaobo Zhao   +5 more
doaj   +1 more source

Research on deformation and failure characteristics of overburden and surface in high-intensity mining of Caojiatan Coal Mine

Meikuang Anquan
Under high-intensity mining conditions, the structural response of overburden is severe, significantly affecting the safety of surface structures. Taking the 122104 super-large mining height working face of Caojiatan Coal Mine in the Yushen Mining Area ...
Zhaolai HUA, Yang LYU, Shengxiang GAO, Zehui WU, Xufeng WANG, Lei ZHANG   +5 more
doaj   +1 more source