承压水上采煤底板破坏深度研究  

Research on Floor Failure Depth of Working Face Mining on Confined Water

作　　者：王兆会[1] 杨胜利[1] 孔德中[1] 白亚光[1] 

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

出　　处：《煤矿安全》2014年第1期17-20,共4页Safety in Coal Mines

基　　金："十一五"国家科技支撑计划资助项目(2009BAB48B02);国家自然科学基金资助项目(51104162);国家大学生创新训练资助项目

摘　　要：某矿7608工作面属承压水上开采,大青灰岩含水层距工作面底板30 m,为保证工作面的安全回采,防止突水事故的发生,利用理论分析和数值模拟手段研究了7608工作面的底板破坏深度,然后采取直流电法对底板破坏深度进行了实测。结果表明:由于充填采空区,7608工作面底板实际破坏深度10.2 m,同理论计算和实验室模拟结果可以较好的吻合,底板岩层中存在厚20 m的隔水关键层,工作面没有突水的危险。7608 working face of one mine is mining on confined water, and the limestone aquifer is only 30 meters away from the floor. In order to ensure safety mining and to prevent water inrush accident in working face, theoretical analysis and numerical simulation method is used to study floor failure depth in 7608 working face, and then the floor failure is measured with DC electric method. The re- sult shows that actual floor failure depth is just l0 meters because of filling goal. Measured result coincides with calculation resuh per- fectly, so there is a water - resisting key strata with 20 meters in floor and 7608 working face has no water inrush accident danger.

关 键 词：工作面 采动影响 底板 充填 破坏深度 直流电法 

分 类 号：TD823.83[矿业工程—煤矿开采]