厚松散层下煤层开采地表沉陷模拟研究

摘要

以国内某大型煤矿为原型,采用FLAC3D有限差分软件对厚松散层下,内部煤矿开采过程中地表沉陷进行数值模拟,并对模拟结果进行了分析和探讨.研究表明：随着煤炭资源的采出,地表沉陷不断增大,并且相比于一般条件,厚松散层下煤炭开采所产生的地表沉陷影响范围变大.%Based on a prototype of large coal in our country,the internal surface subsidence under thick unconsolidated layers in the course of mining exploitation is simulated by using the finite difference software FLAC3D,and then the simulation result is analyzed and studied.The result shows that surface subsidence increases ceaselessly with the coal resources mining and with the general conditions;the surface subsidence caused by coal mining exploitation of thick unconsolidated layers deserves a larger influence scope.