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《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]

Issue:

2008年第02期

Page:

161-

Research Field:

基础地质与矿产地质

Publishing date:

Info

Title:

Numerical Simulation on Air Permeability of Mining Protection Layer in Hongling Coal Mine

Author(s):

WANG Yan¹; WANG Lu-jun¹; QI Jian-jun²; LI Zhi-qiang²

1. Fushun Branch, China Research Institute o f Coal Sciences, Shenyang 110011, Liaoning, China; 2. Xuangang Coal Eletric Corporation, Datong Coal Mine Group Company, Yuanping 034115, Shanxi, China)

Keywords:

protection layer;  permeability of coal;  outburst of coal and gas;  numerical simulation

PACS:

TD823.82

DOI:

-

Abstract:

The depressuring of No.7 and No.12 coal seams with outburst of coal and gas through mining No.11 coal seam of Hongling Coal Mine in Shenyang was tested, the simulating of the variation of permeability with excavating was carried out by FLAC3D, the air permeability of coal during the mining of protection layer was studied. The result indicates that the air permeability of coal is continually strengthened as working surface impels, the permeability of overlying rock mass is obviously larger than that in underlying rock mass, and the more perfect of the pressure release is, the bigger the permeability is.

References:

[1] 唐 书恒 .煤 储 层渗 透 性 影响 因 素探 讨[J] .中 国 煤 田地 质 , 2001 , 35(1):28-30 .
[2] 叶建平 , 史保生 .中国煤储层渗透性及其主 要影响因素[J] .煤 炭学报 , 1999 , 24(2):118-123 .
[3] 张广洋 .煤的瓦斯渗透性影响因素的探讨[J] .重庆大学学报 : 自然科学版 , 1995 , 18(3):27-30 .
[4] 肖代兵 , 刘 林 .突出煤层保护层开采保护方法的考 察[J] .陕 西煤炭技术 , 1999 , 48(3):2-5 .
[5] 刘德贵 .急倾斜近 距离复杂 煤层保护 层开采的 实践[J] .矿业 安全与环保 , 2005 , 12(1):66-67 .
[6] 贺玉龙 , 杨立中 .温度和有效应力对砂岩渗透性影 响的试验研 究[J] .煤田地质与勘探 , 2004 , 25(2):36-38 .
[7] 张国华 , 梁 冰 .煤岩 渗透率 与煤 与瓦 斯突出 关系 理论 探讨 [J] .辽宁工程技 术大学 学报 :自 然科学 版 , 2002 , 21(4):414- 417 .

Memo

Memo:

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Common functions

Last Update: 2008-06-20