煤矿塌陷区建筑荷载作用下地基再变形分区数值模拟研究

Foundation redeformation of partitioning numerical simulation in coal mining subsidence under construction load

运用数值模拟软件(UDEC)建立了某煤矿塌陷区的二维数值模型,生成了煤矿塌陷区的块体图、应力云图和位移云图。结合煤矿塌陷区地表下沉盆地的3个不同区域,使用UDEC模拟了不同建筑荷载作用下煤矿塌陷区的地基再变形情况。模拟结果表明:在煤矿塌陷区的不同区域,塌陷区地基的再变形值随着建筑荷载的增大而增大;在相同建筑荷载的作用下,煤矿塌陷区不同区域的地基再变形有较大差异。对于拟修建在煤矿塌陷区的建筑物,要根据自身的荷载大小及需要,采取适当的保护措施,以保障建筑物的安全使用。

A two-dimensional numerical model of coal mining subsidence area has been established by using UDEC software,coal mining subsidence area of block map,and stress contour map and displacement contour map also are produced. Combined with the three different surface subsidence basin of coal mining subsidence,using the UDEC program to simulate the different construction loads in coal mining subsidence area of foundation redeformation situation,simulation results showed that in different areas of the coal mining subsidence,subsidence of foundation and redeformation value increase with the increase of construction load. In the condition of same construction load,coal mining subsidence area of foundation redeformation in different areas has a large difference. The appropriate protective measures should be taken to ensure its safety.