考虑渗流应力耦合关系的陷落柱突水机理研究  

Research on Water-bursting of Karst Collapse Columns Considering the Coupling Relation between Seepage and Stress

作　　者：李正立[1] 王连国[1] 侯化强[1] 

机构地区：[1]中国矿业大学深部岩土力学与地下工程国家重点实验室,江苏徐州221008

出　　处：《地下空间与工程学报》2013年第5期1173-1178,共6页Chinese Journal of Underground Space and Engineering

基　　金：国家重点基础研究发展计划(973)项目(2010CB226805);国家自然科学基金项目(50874103);国家重点实验室开放基金项目(SKLGDUEK0905)

摘　　要：陷落柱突水受多种因素影响,其中煤矿工作面推进引起的区域岩体应力变化是主要原因。本文以陷落柱内承压水头上升高度和陷落柱内渗流量变化为评价突水危险性的简化判据,根据渗流应力耦合经验公式,借助FLAC3D软件自带的FISH语言开发了流固耦合程序。应用该耦合程序并结合团柏矿某工作面的工程实际,对承压水上边缘充水导水型陷落柱的突水全过程进行了数值模拟。通过模拟结果和力学机理分析,得出了该边缘充水导水型陷落柱的渗流特征及工作面突水危险区域,从而为煤矿安全生产提供了指导。Water-bursting of karst collapse column is affected by many factors, the primary one of which is the change of partial rock stress caused by mining working face boosting. The rising level of confined water head and the change of seepage quantity are used as simplified criterion and the stress-fluid coupling programming was developed by FISH language of FLAC3D software based on the stress-fluid coupling experimental formula. Using the programming and combining it with the actual situation in a working face at Tuanbai Colliery in China, the whole water inrush process of karst collapse columns which is water-filled and water-conducted in edge above confined water is numerically simulated. Based on the simulation result and the mechanical mechanism analysis, the characteristics of seepage and the dangerous water bursting area of the collapse column are acknowledged and therefore instructions of colliery safety production could be given.

关 键 词：陷落柱 突水危险性 渗流应力耦合 数值模拟 

分 类 号：TD745[矿业工程—矿井通风与安全]