Results 31 to 40 of about 5,124 (199)

Numerical simulation study on gas control in fully mechanized top coal caving face based on “U” downward ventilation

Meikuang Anquan, 2021
Aiming at the problem of over-limit gas in the return air corner of the “U” type downward ventilation fully mechanized caving face in Baode Coal Mine, the law of gas migration in the stope and goaf was studied. Using Fluent numerical simulation software
ZHANG Zenghui, XUE Yanping
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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Numerical simulation study on the influence of air leakage on oxygen concentration in goafs of fully mechanized caving mining with shallow buried and large mining height

Frontiers in Earth Science, 2023
In order to reveal the influence of air leakage on oxygen concentration in goafs of fully mechanized caving mining with a shallow buried and high mining height, the air leakage of No.122108 working face in Caojiatan coal mine in different seasons was ...
Xing-long Zhu, H. Wen
semanticscholar   +1 more source

Automatic operation and manual intervention analysis system for intelligent fully mechanized caving face

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, YANG Xiuyu, SUN Feng, ZHAO Dongsheng, HUO Dong   +4 more
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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

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 calculation. This paper also researched the several factors that affect the caving property of top-coal,
Liu Yingjie, Wang Xiaomou
openaire   +2 more sources

Stability analysis of coal mining subsidence area of underlying fully mechanized top coal caving based on Rhino3D-FLAC3D coupling technology

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
doaj   +1 more source

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
doaj   +1 more source

Deformation Mechanism and Control of the Surrounding Rock during Gob-Side Entry Driving along Deeply Fully Mechanized Caving Island Working Face

Geofluids, 2021
The deformation control of the surrounding rock during gob-side entry driving along deeply fully mechanized caving island working face is one of the main bottlenecks affecting the successful and efficient production in modern mining.
Fei Liu, Yongsheng Han
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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