Results 1 to 10 of about 277,436 (279)
Abutment Pressure Distribution Law and Support Analysis of Super Large Mining Height Face. [PDF]
Int J Environ Res Public Health, 2022 Under the condition of the shallow coal seam, the laws of roof activity after large mining height longwall face mining and prevention measures for large-area roof weighting are problems that need to be solved urgently. In the background of the super large mining height working face in the upper 108 working face of Jinjitan Coal Mine 12-2, the spatial ...
Zhang L +6 more
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Lithosphere, 2023 Accurately predicting the development height of the water-conducting fracture zone (HW) is imperative for safe mining in coal mines, in addition to the protection of water resources and the environment.
Dong Feng +3 more
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Coal Wall Spalling Mechanism and Grouting Reinforcement Technology of Large Mining Height Working Face. [PDF]
Sensors (Basel), 2022 To control the problem of coal wall spalling in large mining height working faces subject to mining, considering the Duanwang Mine 150505 fully mechanized working face, the mechanism of coal wall spalling in working faces was investigated by theoretical analysis, numerical simulation and field experiment.
Liu H +8 more
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Floor Disturbance and Failure Characteristics of Super-Large Mining Height Working Face
Geofluids, 2022 The failure depth of the working face floor caused by mining is a key parameter to predict water inrush from the working face floor. Extensive research has been conducted on the floor failure zone of the working face. However, in recent years, there have
Cunjin Lu +5 more
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Research on key technologies of intelligent large mining height fully mechanized mining equipments
Gong-kuang zidonghua, 2019 In order to ensure safe and high-efficient operation of intelligent fully mechanized mining equipments and normalized application of intelligent fully mechanized mining technologies, for fully mechanized mining equipments such as shearer, hydraulic ...
ZHANG Yuliang
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Technology Research on the Fourth Panel Mining Large Height Fully-mechanized Caving Mining in Shangwan Coal Mine [PDF]
MATEC Web of Conferences, 2015 According to the characteristics of the 1-2 coal seam of Shangwan coal mine 4th panel, this research analyzed the feasibility of sublevel caving hydraulic support in the fully-mechanized mining face through estimation method and numerical simulation ...
Liu Yingjie, Wang Xiaomou
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Mechanical characteristics of drum shearer with large mining height under oblique cutting [PDF]
E3S Web of Conferences, 2021 In order to study the dynamic characteristics of the shearer with large mining height of 8.8 m under Oblique cutting, the spatial mechanical model of the Shearer under oblique cutting was established, the angle between the drum and the working face, the ...
Ying Tian, Runxin Zhang, Qiang Zhang
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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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Influence of joint fissure occurrence on stress distribution of coal wall in large mining height [PDF]
Scientific ReportsIn order to ensure the stability of coal wall of fully mechanized mining face with large mining height, Aiming at the prominent problem that the rib spalling rate of coal wall in fully mechanized mining face with large mining height is high and is ...
Weibin Guo, Yichen Gao, Gang Wang
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Applied SciencesThe extensive adoption of large mining height technology and the progressive deepening of mining operations have presented formidable challenges to the safety of roadway support.
Yinghao Qu +7 more
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