界沟煤矿8_(2)101工作面留设防砂煤柱开采可行性分析  

Feasibility Analysis of Mining with Sand Prevention Coal Pillar Set Aside for Further Exploration in 8_(2)101 Working Face of Jiegou Coal Mine

作　　者：章隽 杨本水 ZHANG Jun;YANG Benshui(School of Civil Engineering,Anhui Jianzhu University,Hefei 230601,China)

机构地区：[1]安徽建筑大学土木工程学院,安徽合肥230601

出　　处：《兰州工业学院学报》2023年第1期11-15,共5页Journal of Lanzhou Institute of Technology

基　　金：国家自然科学基金(51774007)。

摘　　要：为进一步开采8_(2)101工作面留设煤岩柱,结合界沟煤矿的工作面概况和水文地质资料,采用FLAC^(3D)软件模拟在煤矿开挖后覆岩移动带来的竖向应力、剪切应力和位移的变化,分析和判断在实际过程中可能发生的事件。结果表明:在煤层开采过程中,围岩受到上部覆岩应力作用发生变形沉降,但随着挖掘深度加深,沉降变化不明显;故在实际开挖过程中适当地采取一定的支护措施,8_(2)101工作面留设防砂煤柱开采是可行的。In order to further mine 8_(2)101 working face with coal pillar set aside for further exploitation,combining with the working face overview and hydrogeological data of Jiegou coal mine,in this paper,the FLAC^(3D) software is adopted to simulate the changes of vertical stress,shear stress and displacement caused by overlying rock movement after coal mine excavation,and the possible events in the actual process are analyzed and judged.The results show that the surrounding rock is deformed and settled under the overlying rock stress in the process of coal mining,but with the deepening of excavation depth,the settlement changes are not obvious.Therefore,it is feasible for 8_(2)101 working face to mine coal pillar with sand prevention if some support measures are taken properly in the actual excavation process.

关 键 词：开采 FLAC 3D 应力 位移 

分 类 号：TU433[建筑科学—岩土工程]