Results 41 to 50 of about 1,939 (269)
Shock and Vibration, 2021 To study the problems of dynamic load pressure and frame pressure caused by the concentration of stress by coal extraction pillars during the mechanized short-distance mining of goaves in shallow coal seams, a frame pressure accident, in the Shendong ...
Haifeng Zhou +3 more
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Influence of Valleys Terrain on Pressure of Fully Mechanized Working Faces in Shallow Coal Seams [PDF]
Shock and Vibration, 2021 The absence of a key stratum during overburden rock movement is crucial to the mining pressure of fully mechanized coal mining faces. Using physical and numerical simulations, the 21304 mechanized mining in Daliuta and Huojitu coal mining faces 1−2 appeared twice during a pressure frame accident analysis.
YingJie Liu, Qingjie Qi, Anhu Wang
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AIP Advances, 2020 Dust seriously affects the safe production of coal mines, and a high dust concentration operating environment is harmful to the health of miners. It is necessary to take dust reduction measures on the working surface.
Zhongliang Lu +2 more
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Research progress and prospect of wet dust control technology in fully mechanized excavation face
Meikuang Anquan, 2023 The ventilation of fully mechanized roadway in coal mine is easy to cause the rapid diffusion of dust, which makes it more difficult to control dust pollution. In order to improve the working environment of fully mechanized coal mining face, the progress
ZHU Xiaotong +5 more
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Research status of intelligent technology of shearer in fully mechanized working face
Gong-kuang zidonghua, 2022 This paper introduces the research status of intelligent technology of shearer at home and abroad. Since the 1990s, the intelligent technology of shearers has entered a mature stage of development abroad, and leading innovations have been made in shearer memory cutting, coal and rock identification, airborne main control software and remote monitoring.
ZHAO Yihui, ZHAO Youjun, ZHOU Zhan
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Gong-kuang zidonghua, 2020 In the context of intelligent fully mechanized caving and mining, it is important to consider not only the cutting by the shearer, but also the coal caving at the back of the support and top coal recovery.
HAN Xiuqi +4 more
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Study on dynamic modification method of 3D model of coal seam in fully mechanized working face
, 2022 The high-precision coal seam geographic information of fully mechanized working face is the key to realizing intelligent unmanned mining. However, the vertical precision of 3D model of coal seam constructed at this stage is low. The model cannot meet the
LIANG Shua +4 more
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Study on Measuring and Forecasting of Fully Mechanized Working Face Roof Pressure System
TELKOMNIKA Indonesian Journal of Electrical Engineering, 2014 China is one of the largest coal producer and consumer countries in the world. However, due to the complexity of coal resources, storage conditions, geological disaster-prone coal mines, it is also a coal mine accidents multiple country, coal mine accidents and deaths of China accounted to about 80% total of the world.
Yong Zhang, XueQiang Yang, ZengXin Wang
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Three-dimensional coal seam modeling of fully mechanized working face based on transparent geology
, 2022 The three-dimensional coal seam modeling method based on transparent geology is an effective way to indirectly solve the problem of coal rock identification.
XUE Guohua
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Meikuang Anquan, 2020 In order to improve the top coal resources at both ends of fully mechanized top coal caving face in extra-thick seam and the recovery rate of coal resources during the initial caving, reduce the impact of initial weighting on the working face during the
SUN Zhenping
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