承压水体上煤层底板采动破坏特征的数值模拟研究  

Numerical Simulation on Mining Failure Characteristics of Coal Seam Floor above Confined Aquifer

作　　者：胡儒 许继影[1] 

机构地区：[1]宿州学院资源与土木工程学院,安徽宿州234000

出　　处：《阴山学刊（自然科学版）》2015年第4期20-22,26,共4页Yinshan Academic Journal(Natural Science Edition)

基　　金：宿州区域发展协同创新中心青年人才培养开放课题(2014SZXTQP03);宿州学院科研平台开放课题(2014YKF03)

摘　　要：为研究采煤过程中,承压含水体上煤层底板的破坏特征,以淮北煤田袁店煤矿1011综采工作面为实例,结合煤层顶底板岩层特性,建立三维地质模型,通过FLAC3d数值模拟开挖过程得出煤层底板破坏深度值及塑性分布特征。结果显示数值模拟可反映在采动影响下底板的破坏特征、破坏范围及应力变化。该研究表明数值模拟可以为矿井生产决策及防治水设计提供可靠依据。In order to research failure law of coal seam floor above confined aquifer, fully - mechanized work- ing face in the Yuandian coal mine was taken as example, and the date of strata combination and construction fea- tures of coal seam roof and floor was collected. According to three - dimensional geological model by FLAC3d, and the failure depth of coal seam floor and plastic zone have been obtained. The results show that numerical simulation can apply to indicate failure depth characteristics, failure range, stress variation of coal seam floor during mining process. The study demonstrated that this method provides the reliable basis to the mine production scheme and wa- terproof system design in mines.

关 键 词：煤层底板 数值模拟 破坏深度 莫尔-库仑 

分 类 号：O39[理学—工程力学] TD163[理学—力学]