中文摘要：

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。

英文摘要：

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.