Results 21 to 30 of about 531 (168)
Applied Sciences, 2023 Overlying strata movement has an important effect on the stability of coal along goaf. In order to study the impact of overlying strata movement on the stability of coal during fully mechanized top-coal caving mining, a simulation experiment was conducted on the Liuxiang Coal Mine using digital image correlation (DIC) and stress electric measurement ...
He Ren +4 more
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Determination on Reasonable Mining Height and Top Coal Caving Technology in Huating Coal Mine
Meikuang Anquan, 2020 In view of the problems, such as coal wall spalling, roof caving and low recovery rate of top coal in 250107-1 fully mechanized caving face of Huating Coal Mine at present, the method of combining FLAC3D numerical analysis and theoretical calculation ...
QIAO Zhongdong, QU Ying, YANG Guohong, LIU Biao
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Gong-kuang zidonghua, 2014 The paper introduced key technologies of automatic fully-mechanized top-coal caving face with large mining height, including automatic control of hydraulic support, machinery-tracked automation, automation of coal caving, remote control, lighting and low
FAN Zhizhong
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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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Advances in Civil Engineering, 2021 Adopting an effective top coal caving method is the key to enhancing coal recovery and reducing gangue content for the fully mechanized top coal caving working face with extra-thick coal seams.
Shi Jiulin +3 more
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Meikuang Anquan, 2021 In order to qualitatively and quantitatively analyze the degree of influence of the water load on the stability of fully mechanized caving coal subsidence area, the underground coal mining subsidence area of Hongyanhe Reservoir was taken as the research ...
HUANG Jianfeng, WU Zhang, ZHANG Zhenzhen, LI Yongqiang, ZHANG Hao
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Research on automatic coal caving control system
Gong-kuang zidonghua, 2018 Aiming at problem that fully mechanized caving face at the back end of fully mechanized top coal caving face adopted manual caving control method, its automation level differed greatly from that at the front end of fully mechanized top coal caving face ...
CUI Zhifang, NIU Jianfeng
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Meikuang Anquan, 2021 In order to realize the safety, high efficiency and high recovery rate mining of 9-13 m thickness hard coal seam in Jinjitan Coal Mine, the top coal recovery rate and coal wall stability of different cutting heights are analyzed by theoretical analysis ...
MENG Xiangjun +6 more
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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
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Study on sub-regional control of fully mechanized top-coal caving roadway under close irregular goa
Meikuang Anquan, 2023 In order to solve the control problems of large deformation of roadway surrounding rock in close coal seams, taking the fully mechanized top-coal caving roadway in close thick coal seams under irregular goaf of Xiaoyu Coal Mine as the engineering ...
LIU Huabo +3 more
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