Results 11 to 20 of about 7,241 (152)
Minerals (Basel, Switzerland), 2023 Double-roadway tunneling could mitigate the contradiction between mining production needs and tunneling speed, which is pivotal to the sustainable development of underground mines. However, it is very difficult to control the stability of a mining roadway on an adjacent working face suffering from strong mining disturbance due to double-roadway ...
J X Yang, Deyu Qian, Qian Deyu
exaly +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 AbstractThe 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 falls, roof falls, and hydraulic support failure accidents (e.g., support closure and ...
Yunpei Liang
exaly +4 more sources
Energy Science & EngineeringIn mining, the roof structure of a working face with a large mining height in a shallow‐buried coal seam is prone to cutting instability in front of the support, which causes support crushing and coal‐wall spalling. This study analyzes 2201 working faces
Wang Hongwei +7 more
doaj +3 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: ① the influence range is larger of front abutment pressure in Liuzhuang coal mine 171301 super ...
Li Zhi Hua
exaly +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
openaire +2 more sources
Prevention Technology for Strong Mine Pressure Disaster in the Hard-Roof Large-Mining-Height Working Face [PDF]
Shock and Vibration, 2020 The movement and destruction of the hard roof in a stope is an important reason for the occurrence of strong ground pressure disasters at the working face. Considering Tongxin Coal Mine as the engineering background, the stress distribution law of the surrounding rock and the overburden rock damage characteristics of a large-mining-height working face ...
Hongfei Duan, Lijuan Zhao
openaire +3 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 mechanized mining working face with super-large height in Shendong mining area.
C. Li, C. Zhao, J. Ren, L. Tao
openaire +2 more sources
Geofluids, 2022 Aiming at the wide range of rock strata movement and collapse, poor stability and high damage rate of the working face support and being prone to crushing of the support in large mining height face, analog simulation, theoretical analysis, and field ...
Fengfeng Wu +5 more
doaj +2 more sources
Study on Surrounding Rock Control and Support Stability of Ultra-Large Height Mining Face
Energies, 2022 Surrounding rock control and support stability in the process of coal seam mining in ultra-large height mining face are the key to normal mine operation.
Sheng Wang, Xuelong Li, Qizhi Qin
doaj +3 more sources
Research on Surface Failure Law of Working Faces in Large Mining Height and Shallow Buried Coal Seam [PDF]
Advances in Civil Engineering, 2020 In the process of high-intensity and large-space mining in Shendong mining area, various surface cracks are generated on the surface, resulting in serious damage to the surface buildings and the local ecological environment.
Zhenhua Li +3 more
doaj +2 more sources