巨厚冲积层下开采地表移动规律数值模拟分析  

Numerical simulation and analysis of surface movement in very thick alluvium mining

作　　者：秦勇 Qin Yong(Changcun Mine,Shanxi Lu＇an Environmental Protection Energy Development Corporation Ltd.,Changzhi 046102,China)

机构地区：[1]山西潞安环保能源开发股份有限公司常村煤矿,山西长治046102

出　　处：《煤炭与化工》2018年第10期52-54,共3页Coal and Chemical Industry

摘　　要：为研究厚冲积层下开采地表移动规律,采用UDEC程序,建立了不同厚度冲积层条件的采场数值模型,研究了巨厚冲积层地表沉降、移动变形特征,对比分析了不同冲积层厚度对地表沉陷的影响。结果表明:巨厚冲击层下工作面开采过程中地表变形可划分为变形初始期、变形活跃期、变形衰减期等三个阶段;厚冲击层对地表沉陷具有屏蔽、缓冲、协同耦合等作用;冲积层厚度越大,地表沉陷范围越大,而地表下沉率变化不大。巨厚沉积层条件对地表沉陷具有一定的缓解作用。In order to study on the surface movement law in thick alluvium mining, the numerical modal of stope with different thickness alluvium was established by UDEC program, the surface subsidence and movement deformation characteristics of thick alluvium were studied, the effect of different thickness alluvial on surface subsidence was analyzed. The results showed that the surface deformation was divided into three stages： the initial stage, the active stage and the attenuation stage, thick alluvium had shielding, buffering and synergistie coupling effect for surface subsidence, the surface subsidence was larger because the thickness alluvium was larger, but the surface subsidence rate changed little. The condition of thick alluvium had the mitigate effect on the surface subsidence.

关 键 词：巨厚冲积层 开采沉陷 数值模拟 

分 类 号：TD325[矿业工程—矿井建设]