近水平煤层综放开采导水裂隙带高度研究  

Study on Height of Water Flow Crack Zone in Fully Mechanized Top Coal Caving Mining Face in Approximate Horizontal Seam

作　　者：张世青[1] 魏春臣 郁志伟[1] 刘亚东[1] 霍利杰[1,2] 

机构地区：[1]中国矿业大学(北京)资源与安全工程学院,北京100083 [2]同煤国电同忻煤矿有限公司,山西大同037000

出　　处：《煤炭工程》2014年第11期96-98,101,共4页Coal Engineering

基　　金：国家重点基础研究发展计划(973计划)资助项目(2011CB201204);中央高校基本科研业务费资助项目(2011YZ05)

摘　　要：为了研究近水平煤层综放开采导水裂隙带的高度,利用材料力学导水裂隙的形成机制进行研究,结合理论计算、离散元数值模拟软件UDEC和现场观测三种方法对同忻矿8100工作面导水裂隙分布范围进行计算,结果表明:岩层下沉量的协调性和岩层跨距是裂隙通道形成的决定性因素;分层开采导水裂隙带经验公式不适用于综放开采,而数值模拟是一种有效的计算综放开采导水裂隙带高度的方法。In order to study a height of a water flow crack zone in a fully mechanized top coal caving mining in a approximate horizontal seam,a material mechanics was applied to the study on the formation mechanism of the water flow crack. A theoretical calculation,discrete element numerical simulation software UDEC and site observation methods were applied to the calculation of the water flow crack distribution scope in No. 8100 coal mining face of Tongxin Mine. The results showed that a coordination of the strata subsidence value and the span of the rock strata would be decisive factors of the crack channel formed. An experience formula of a slicing mining water flow crack zone would be suitable to the fully mechanized top coal caving mining and the numerical simulation would be an effective method to calculate a height of the water flow crack zone in the fully mechanized top coal caving mining.

关 键 词：综放开采 近水平煤层 导水裂隙带 UDEC 

分 类 号：TD325[矿业工程—矿井建设]