Results 21 to 30 of about 2,391,241 (156)

Dynamic Random Arching in the Flow Field of Top-Coal Caving Mining

Energies, 2018
The large mining height fully mechanized top-coal caving mining technique has developed rapidly and become the most extensively used mining method for ultra-thick coal seams. The arching of coal/gangue and the drawing out of gangue are peculiar phenomena
Ningbo Zhang, Changyou Liu, Xiaojie Wu, Tingxiang Ren   +3 more
doaj   +4 more sources

Research on active roof control space of fully mechanized caving support based on motion posture perception [PDF]

Meitan xuebao
The fully mechanized top-coal caving support is a critical device that serves both as a support mechanism and an active means for top-coal caving in fully mechanized top-coal caving mining operations.
Qingliang ZENG, Xiaowan LEI, Zhaosheng MENG, Lirong WAN, Xinliang BAN, Yulong HU   +5 more
doaj   +2 more sources

Case Studies of Comprehensive Gas Control Method during Fully Mechanized Caving of Low-Permeability Ultrathick Coal Seams

Geofluids, 2021
Slicing fully mechanized caving mining is a standard high-efficiency mining method for ultrathick coal seams. However, the effectiveness of gas control has accentuated the difficulty in fully mechanized top coal caving of low-permeability ultrathick coal
Bangyou Jiang, Shitan Gu, Wenshuai Li, Guangchao Zhang, Jihua Zhang   +4 more
doaj   +2 more sources

Theory and key technologies for intelligent fully-mechanized top-coal caving faces of annual production of millions of tons [PDF]

Meitan kexue jishu
The research focused on addressing various challenges in intelligent top caving theory, intelligent perception and recognition key technology, intelligent caving comprehensive decision-making technology, and remote caving intelligent control technology ...
Bin YU, Yang TAI, Gang XU, Yong LI, Dongyin LI, Shibo WANG, Tiejun KUANG, Ercun MENG   +7 more
doaj   +2 more sources

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
doaj   +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
doaj   +1 more source

Study on the Structural System of Roof in Fully Mechanized Top Coal Caving

, 2011
Based on the structural characters of roof in fully mechanized top coal caving, mechanical analysis, mechanical calculation and simulation experiment were used to explore the particularity of roof structure in fully mechanized top coal caving.
Jie Shen, Wei LK, Da Meng, Shen J, Li Ke Wei, Meng D(孟达)   +5 more
core   +3 more sources

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

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

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