An analysis of factors affecting water-inrush from the number 4 coal-seam roof conglomerate in the Huafeng Coal Mine

被引:0
|
作者
Shi, Long-Qing [1 ]
Yu, Xiao-Ge [1 ]
Wei, Jiu-Chuan [1 ]
Guo, Jian-Bin [1 ]
Zhai, Pei-He [1 ]
Li, Jing-Fa [2 ]
Li, Gong-Qiang [2 ]
机构
[1] School of Geology Science and Engineering, Shandong University of Science and Technology, Qingdao, Shandong 266510, China
[2] Xinwen Mining Group, Xintai, Shandong 271233, China
关键词
Coal mines - Underground structures - Coal - Fracture - Mine roof control - Coal deposits;
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学科分类号
摘要
An analysis based on rock pressure control theory and the distribution and hydro-geological characteristics of the conglomerate above the Huafeng Coal Mine number 1409 working face suggests the fracture zone allowing water inflow is 96.2 m thick while mining the coal layer itself is 6.5 m thick. This fracture zone can lead to water-inrush through the roof. The underground pressure data and roof water-inrush data are correlated. Monitoring the number 2407 working face for rockburst suggests a role for rockburst in promoting water-inrush. A drift model of water migration along the working face below a roadway is described. Zebra fractures provide the main passage way for water where large amounts of water-inrush occur through the roof.
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页码:26 / 31
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