Results 31 to 40 of about 2,391,241 (156)
Meikuang Anquan, 2022 In order to determine the reasonable length of the mining face for high strength fully mechanized caving mining in low gas seams, taking 42108 fully mechanized caving face of Buertai Mine as the research object, the formula of checking the mining face ...
LYU Qingxu, XIAO Jianru, MAN Yang
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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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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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, 2022 The method of fully mechanized top-coal caving mining has become the main method of mining thick-seam coal. The process parameters of fully mechanized caving will affect the recovery rate and gangue content of top coal.
Baofu Zhao +5 more
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Optimization Research of Hydraulic Support in Fully Mechanized Caving Face [PDF]
, 2014 According to the problem that the high concentrations of fully mechanized caving face is difficult to control, the mathematical model of solving two-phase flow of gas and dust particles was built by established the k-ɛ-Θ-kp equation.
Lei, Zhang +5 more
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Research and application of intelligent caving technology in fully mechanized working face
Gong-kuang zidonghua, 2021 The traditional top coal caving control mainly relies on manual coal caving control, which uses single-round of sequential coal caving. The working face equipped with electro-hydraulic control system mainly adopts the two-round sequential coal caving ...
WU Tong, YU Rui, LIU Qing, WEI Wenyan
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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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Research on Adaptability of Full-mechanized Caving Mining with Large Mining-height [PDF]
, 2011 In 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.
Quan-ming, LIU, De-bing, MAO
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Meikuang Anquan, 2020 Aiming at the problem of large dust concentration during the mining operation of the 81308 fully mechanized caving face, based on the principles of wet coal dust reduction and spray dust reduction, utilizing “static pressure + a group of porous” large ...
WANG Huifeng, CHEN Dianfu
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