羊东矿8463工作面采空区上覆岩层裂隙发育带的确定

Fractured Zone Determination of Goaf Overlying Rock in Yangdong Coal Mine 8463 Working Face

摘要: 基于煤层采动矿山压力与围岩发展理论，采用理论计算与数值模拟相结合的方法分析预测羊东矿8463工作面采空区上覆岩层发展规律，确定其主要裂隙发育带的区域，并通过现场钻孔瓦斯抽采量的考察，验证其合理性。结果表明：裂隙发育带范围为10~23 m，且在此区域单个钻孔瓦斯抽采纯量为0.6~0.8 m³/min，高于其它区域的瓦斯抽采量。
- 上覆岩层 /
- 裂隙发育带 /
- 理论计算 /
- 数值模拟 /
- 钻孔考察
Abstract: Based on the theory of coal seam mining pressure and surrounding rock development, the paper uses the methods of theoretical calculations and numerical simulations to analyze and forecast the development of goaf overlying rock in 8463 face of Yangdong Coal Mine, and determines the main fractured zones, then verifies its rationality through investigating gas extraction amount of field drilling. The results show that the fractured zones range is 10 ~ 23 m, and one single borehole's gas extraction amount is 0.6 ~ 0.8 m³/min in this area, which is higher than other regions of the gas drainage amount.
- overlying rock /
- fractured zone /
- theoretical calculations /
- numerical simulations /
- borehole investigation

[1]	黄志安，童海方，张英华，等.采空区上覆岩层“三带”的界定准则和仿真确定[J].北京科技大学学报，2006,28(7):609-612.
[2]	张金才，张玉旧，刘天泉.岩体渗流与煤层底板突水[M].北京：地质出版社，1997:31-32.
[3]	涂敏，刘泽功.综放开采顶板离层裂隙变化研究[J].煤炭科学技术，2004(4):44-47.
[4]	李焕，吕自伟，赵亮，等.高位钻孔瓦斯抽放冒落带与裂隙带高度的测定方法[J].现代矿业，2011(1):49-51.
[5]	王福厚.高位钻孔抽放瓦斯冒落带及裂隙带高度确定方法[J].煤炭技术，2008,27(8):74,76-77.
[6]	钱鸣高，刘听成.矿山压力及其控制[M].修订本.北京：煤炭工业出版社，1991.
[7]	钱鸣高，缪协兴，许家林,等.岩层控制的关键层理论[M].徐州：中国矿业大学出版社，2003.
[8]	侯凤才，张国华.高位钻孔瓦斯抽放参数的确定[J].黑龙江科技学院学报，2008,18(4):259-261.
[9]	于不凡，王佑安.煤矿瓦斯灾害防治及利用技术手册[M].北京：煤炭工业出版社，2000.