Results 41 to 50 of about 902 (192)

Prediction of gas emission rate on fully-mechanized caving face with layered mining of thick coal seam

Gong-kuang zidonghua, 2020
Due to the difference between fully-mechanized caving face and single stoping process face, there would be a big error in predicting gas emission rate on fully mechanized caving face by use of AQ 1018-2006 The Predicted Method of Mine Gas Emission Rate ...
WANG Xiaopeng
doaj   +1 more source

Study on overburden movement law and ground pressure behavior in fully mechanized top coal caving face under the disturbance of upper coal seam

Meikuang Anquan, 2023
In recent years, most of the coal mines in Zhungeer Coalfield have entered the mining of the second main coal seams, such as 6#, 10# and 11#, with an average thickness of more than 10 m, so most of the coal mines use fully mechanized caving mining ...
Hua NAN, Zhuoying WANG
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Application of Cutting Roof Pressure Relief Pre-fracturing Technology in Fully Mechanized Caving Face in Extra Thick Coal Seam

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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1303 fully mechanized top-coal caving face goaf nitrogen injection circuit.

, 2021
1303 fully mechanized top-coal caving face goaf nitrogen injection circuit.
Youli Yao (28474), Qingjie Qi (9674147), Zhangxuan Ning (11457434), Yun Qi (560401), Wei Wang (17594)   +4 more
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Analysis of Ground Behavior Regularity of Fully Mechanized Face with Extra Thick Coal Seam

Gong-kuang zidonghua, 2011
The paper used methods of field strata control observation and RFPA numerical simulation to analyze and study ground behavior regularity of fully mechanized face with extra thick coal seam of easy spontaneous combustion in Gengcun Coal Mine.
REN Yong-kang, LI Bao-fu, WANG Fu-li
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Study on key technologies of automatic fully-mechanized top-coal caving face with large mining height

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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Comprehensive Dust Management of Working Face Based on a Group of Porous Large Area Water Injection Technology

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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Determination of reasonable mining face length for high strength fully mechanized caving mining in low gas seams

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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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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Comprehensive gas control in initial mining period of fully mechanized face with hard roof based on rear-inclined high drainage roadway as the main body

Meikuang Anquan, 2021
This paper analyzes the sudden abnormal gas outburst and its change during the initial mining period of the 2601 fully mechanized caving face in Zhangcun Coal Mine.
ZHANG Lijun, ZHANG Dongpeng, ZHANG Tianming, LUO Renjun, ZHANG Chao, SONG Yifan, YANG Shengqiang
doaj   +1 more source