Results 21 to 30 of about 4,409 (252)
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
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Characteristics of Overburden Failure and Fracture Evolution in Shallow Buried Working Face with Large Mining Height [PDF]
Sustainability, 2021 In order to solve the issues of uncertain overburden failure height and water loss at the Daliuta coal mine, the collapse characteristics of overburden and the development height of water-conducting fractured zone were studied by using physical modeling, FLAC 3D numerical simulation, and field observation, which were used to verify each other. In order
Xiuchang Shi, Jixing Zhang
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Roof Fracture Characteristics and Strata Behavior Law of Super Large Mining Working Faces
Geofluids, 2021 Exploiting the working face in coal mines using a super long mining length and large mining height has become important for intensive production with high yield and high efficiency.
Guozhen Zhao +4 more
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Key Stratum Structure and Support Working Resistance of Longwall Face with Large Mining Height in the Shallow Coal Seams, China [PDF]
Advances in Civil Engineering, 2020 The fully mechanized mining with large mining height is the main method for high yield and efficient coal mining in China. The key stratum structure (KSS) is the basis of revealing the mechanism of roof weighting and determination of support working resistance of the longwall face with large mining height (LFLMH) in the shallow coal seam. The height of
Qingxiang Huang, Jinlong Zhou, Jian Cao
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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
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Control of Gob-Side Roadway with Large Mining Height in Inclined Thick Coal Seam: A Case Study
Shock and Vibration, 2021 The gob-side roadway of 130205, a large-mining-height working face in the Yangchangwan coal mine, was investigated in terms of the mine pressure law and support technology for large mining heights and narrow coal pillars for mining roadways. The research
Xie Fuxing
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Meikuang Anquan, 2020 In order to study the law of ground pressure appearance in the face with large mining height in shallow coal seam and determine its reasonable working resistance of support, the 5-2 coal 503 working face of Daliuta Coal Mine in Shendong is selected as ...
QIU Fengqi, ZHU Lei, GU Wenzhe, LIU Zhicheng, ZHANG Xinfu, PAN Hao, SONG Tianqi
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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, Quanle Zou
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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 mechanized mining face of Shendong Bulianta Coal Mine is selected as the The research object adopts
Li Zhi, Ma Wei
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Key technology and equipment for fully mechanized mining with extra-large shearing height of 10 m in extra-thick coal seam [PDF]
Meitan xuebaoFully mechanized mining technology with extra-large shearing height is the optimal technical approach to achieve high-yield, high-efficiency and high-recovery mining for 6−10 m ultra-thick coal seam in Chinese coal mines.
Hongpu KANG +17 more
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