断层采动活化对导水裂隙带高度影响的模拟实验研究  

Physical simulation of height of water-flowing fractured zone influenced by fault activation after coal extraction

作　　者：路军[1,2] 许家林[1,2] 王露[1,2] 刘栋林[1,2] 朱卫兵[1,2] 

机构地区：[1]中国矿业大学矿业工程学院,江苏省徐州市221116 [2]煤炭资源与安全开采国家重点实验室,江苏省徐州市221116

出　　处：《中国煤炭》2012年第1期36-40,共5页China Coal

基　　金：国家重点基础研究发展计划(973)资助项目(2007CB209403);国家自然科学基金资助项目(50974116)

摘　　要：通过物理模拟研究了断层采动活化对导水裂隙带高度的影响,实验结果表明:断层断至层位在正常导水裂隙带范围内,断层活化对导水裂隙带高度没有影响;断层断至层位在正常导水裂隙带范围之外,受断层切割的关键层因断层活化而失去控制作用,导水裂隙带将发育到上一层关键层的底部;断层断至层位高度相同时,导水裂隙带发育高度相同,但此时工作面推进方向与断层面倾向的位置关系对导水裂隙发育速度有一定影响。The effect of fault activation after the coal extraction on height of water-flowing fractured zone was researched by the physical simulation experiment.The results showed that the fault activation after coal extraction had no influence on the height of water-flowing fractured zone when the fault extended within the normal water-flowing fractured zone.When the fault extended out of normal water-flowing fractured zone,the key stratum cut by the fault would lose the control on the movement of overlying strata,so the height of water-flowing fractured zone would develop to the bottom of upper key stratum.When the faults extended to the same height,the water-flowing fractured zone would be at the same height.Simultaneously,the relative position of working face advance and the fault dip direction would have a certain effect on the developing rate of water-flowing fractured zone.

关 键 词：断层采动活化 断至层位 导水裂隙带高度 关键层 物理模拟 

分 类 号：P641[天文地球—地质矿产勘探]