摘要
煤层开采引起的岩层与地表变形移动,可使位于开采范围内的地表水渗入井下,威胁煤矿生产安全。因此,研究覆岩破坏规律,特别是导水裂缝带的高度就显得极为重要。快速拉格朗日分析法是一种新的数值分析方法,尝试将其应用于综采放顶煤条件下冒落带和裂隙带高度的预测,基于山西省某煤矿一工作面进行模拟,并将数值模拟结果与经验公式计算数值以及实测数值进行对比分析,论证了FLAC数值模拟程序在预测煤层开采覆岩破坏状况中应用的可行性。
The strata and surface movements resulting from underground mining can cause the surface water in the mining range to burst into the underground,which threaten the safety of the production in coal mines.Therefore,to research the overburden＇s failure laws,especially the height of water flowing fractured zone,is extremely importance.Fast Lagrangian analysis is a new numerical analysis method in resent years,this article attempts to use it in the prediction of the height of caving zone and water flowing fractured zone in fully mechanized caving mining based on a coal mine in Shanxi Province.Compared the results of numerical simulation to numerical calculation of empirical formula and measured values,then the feasibility of FLAC which used to predict the height of caving zone and water flowing fractured zone is demonstrated.
出处
《煤矿安全》
CAS
北大核心
2012年第12期54-56,共3页
Safety in Coal Mines
关键词
FLAC
覆岩破坏
数值模拟
FLAC
overlying strata failure
numerical simulation
