Results 11 to 20 of about 25,519 (265)
Gong-kuang zidonghua, 2018 In order to solve problems of large number of workers and high labor intensity on fully mechanized mining face with large mining height, according to actual situation of No.2 Coal Mine of Huangling Mining Group Co., Ltd., technical difficulties such as ...
FAN Jingdao
doaj +3 more sources
Research on automatic control technology of large mining height hydraulic support
Gong-kuang zidonghua, 2018 In view of problems of high roof pressure, serious spalling and roof falling and instable support in production of large height mining face, demands of automation control technology of the large mining height hydraulic support were analyzed.
WANG Haiju
doaj +3 more sources
Energies, 2019 The overburden movement of the large mining height working face of shallow buried thin bedrock (SBTB) is a complex engineering problem with “time-space-intension”, which is of great significance to realize efficient and safe mining in the ...
Qingxiang Huang, Yanpeng He
doaj +4 more sources
Fracture Mechanical Behavior of Cracked Cantilever Roof with Large Cutting Height Mining [PDF]
Shock and Vibration, 2020 Accurately predicting the roof collapse span is crucial in ensuring the safe production of thick seam mining with large mining height, which is easy in forming a “cantilever beam” structure.
Zenghui Zhao +4 more
doaj +3 more sources
Research on the Mechanism and Control Technology of Coal Wall Sloughing in the Ultra-Large Mining Height Working Face [PDF]
International Journal of Environmental Research and Public Health, 2023 One of the primary factors affecting safe and effective mining in fully mechanized mining faces with large mining heights is coal wall sloughing.
Xuelong Li +2 more
exaly +3 more sources
Advances in Civil Engineering, 2021 In recent years, in order to increase the coal recovery rate, the large mining height fully mechanized top-coal caving mining has been widely used because it has the advantages of both fully mechanized mining method and large mining height mining method.
Baisheng Zhang +4 more
doaj +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
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
Research on Adaptability of Full-mechanized Caving Mining with Large Mining-height
Procedia Engineering, 2011 AbstractIn order to solve the safety problem from methane concentration in mining face with high mining intensity, full-mechanized top-coal caving mining with large mining-height was put forward. In spite of its advantages in controlling methane, its main problems were pointed out.
Quan-ming, LIU, De-bing, MAO
openaire +2 more sources
Plastic zone distribution and main controlling factors analysis of large mining height face in steeply dipping coal seam [PDF]
Meitan kexue jishu, 2023 Coal wall of large mining height face in steeply dipping coal seam has large free height, wide free movement space and poor self-stabilization balance, coal wall is not an isolated body in the face, it can form a load-bearing structure with the ...
Hao ZHANG, Yongping WU, Panshi XIE
doaj +2 more sources