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针对中国煤矿多分布于7度及7度以上的地震烈度区,煤矿大规模开采,在矿区地层中留下了大面积、立体分布的空间,一些开采位于工业区或居住区的下部等问题,采用FLAC3D软件,建立了不同条件下的数值模型,对下伏采空区的煤矿地表地震响应进行分析.模拟结果显示:在剪切地震波的作用下,下伏采空区煤矿地表的最大水平加速度受到地下采空区的影响.讨论了在采深及采空区填充参数不同的情况下,地表监测位置的响应值变化.
Due to the large-scale mining of coal mines in the seismic intensity areas of China where coal mines are distributed over 7 and above 7 degrees, large-area and three-dimensional space are left in the strata of mining areas and some mines are located in the lower part of industrial or residential areas. The FLAC3D software was used to establish the numerical model under different conditions to analyze the ground surface seismic response of coal mines under the gob in the following conditions: Which is affected by the underground gobs.This paper discusses the change of the response value of the surface monitoring location under the condition of different filling parameters in mining and goaf.