Results 21 to 30 of about 13,620,505 (264)
Strong mine pressure appearing mechanism and control at deep buried working face with large mining height [PDF]
Meitan kexue jishuDuring the mining of the adjacent working face, the strong mine pressure caused by the hard thick roof has obvious zoning characteristics due to the mining of the previous deeply buried large mining height working face.
Zhaoyuan LEI +4 more
doaj +3 more sources
Determination of working resistance based on movement type of the first subordinate key stratum in a fully mechanized face with large mining height [PDF]
Energy Science and Engineering, 2019 The increase in extraction height will increase the mining‐induced overlying strata failure height. In this scenario, the strata pressure behavior is strong in a fully mechanized face with large mining height (FMFLMH), which frequently causes coal wall ...
Zou Quanle, Yunpei Liang
exaly +4 more sources
Numerical Simulation of Strata Behavior in Super-Long and Large Mining Height Working Face
Advanced Materials Research, 2013 In order to study the strata behavior characteristics in super-long and large mining height working face, the FLAC-3D software was used to study the roof displacement and the abutment pressure distribution laws of working faces. The results indicate that:
Zhi Hua Li
exaly +3 more sources
E3S Web of Conferences, 2022 The dust control basis of fully mechanized mining face is clear dust source characteristics. In view of the problem of unclear dust source and unknown distribution characteristics in the working area of 7.8 m large fully mechanized mining face, the fully
Zhi Li, Wei Ma
semanticscholar +4 more sources
ProcessesThe width of a stop-mining coal pillar is of great significance to the stability of the surrounding rock of the main roadway and the safety of production in the mine.
Wei Yu +6 more
semanticscholar +3 more sources
Meikuang Anquan, 2021 Aiming at the problem of safe coal mining under the sandstone aquifer covering Luohe Formation in the thick coal seam mining face of Xunyao Mining Area, theoretical analysis, similar material test and numerical simulation were used to study the ...
YANG Yuliang, XU Zhuhe
doaj +3 more sources
Theory of coal wall spalling and cooperative control by “support-destressing” in 10 m ultra-large mining height working face [PDF]
Meitan xuebaoCoal wall spalling is one of the main factors restricting the safe production of 10 m ultra-large mining height working face.In response to the problem of unclear mechanism of coal wall spalling and difficult control of surrounding rock in the 10 m ultra-
Jiangbin LIU +7 more
doaj +3 more sources
Stability of a Face Guard in a Large Mining Height Working Face
International Journal of Simulation Modelling, 2021 Hydraulic support is an important piece of equipment in a fully mechanized mining face, and it is used to prevent the roof from falling out of control and protect the workers underground.
D.-L. Wang +3 more
semanticscholar +2 more sources
Meikuang Anquan, 2021 In order to master the roof failure structure and mine pressure development law of large mining height working face, the roof collapse laws of different mining heights are calculated and analyzed, and the reasonable working resistance of support is ...
MENG Hao
doaj +2 more sources
The Influence of Overburden Structure on Mine Ground Pressure Appearance in Working Face with Super-large Mining Height: a Case Study in Shendong Mining Area [PDF]
International Journal of Engineering, 2021 The Shendong mining area where is located in the northwest of China has the highest fully mechanized working face in the world. The purpose of this paper is to understand the causes of abnormal mine ground pressure appearance (MGPA) on the fully ...
C. Li, C.-W. Zhao, J.-J. Ren, Tao Liu
semanticscholar +2 more sources