采动对陷落柱裂隙带发育影响机理研究  

Study on Influence Mechanism of Mining on Crack Zone Development Abound Collapse Column

作　　者：邢松涛[1,2] 王连国[1,2] 侯化强[1,2] 

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,江苏徐州市221008 [2]中国矿业大学力学与建筑工程学院,江苏徐州市221008

出　　处：《矿业研究与开发》2012年第5期16-19,共4页Mining Research and Development

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：为研究采动影响下陷落柱周边裂隙带的破坏机制,对其展开力学分析,并利用FLAC3D软件对这一过程进行数值模拟。模拟结果表明,陷落柱周边裂隙在采动影响下极易发生扩展贯通,进而导致矿井突水。分析模拟结果,认为采动对周边裂隙带影响的力学机理是裂纹因所受水平地应力变小而发生起裂扩展,从而使陷落柱周边裂隙带成为矿井导突水事故易发生的地带。霍州地区某矿10#煤层开采过程所揭露的x-187-08陷落柱的实例,分析结果证实了该结论。In order to research the fracturing mechanism of the crack zone around collapse column under the influence of coal mining,mechanical analysis was conduct and the FLAC3D software was used to simulate the fracturing process.The simulation showed that the expansion and connection of cracks around collapse column easily occur under mining effect,which may lead to mine water inrush.The analysis of the simulated results showed that the cracks the mechanics mechanism of mining effect on crack zone around collapse column is crack initiation and expansion due to the horizontal stress decreasing,thereby,mine water inrush accidents easily occur in the crack zone around collapse column.The conclusion has been approved by the results of analysis on x-187-08 collapse column which was exposed durring the mining of No.10 coal seam of some coal mine in Huozhou.

关 键 词：陷落柱 裂隙带 煤矿突水 数值模拟 

分 类 号：TD325.1[矿业工程—矿井建设]