基于MidasGTS的地下开采对管状皮带影响的有限元分析

Finite element analysis of effect of underground mining on tubular belt based on Midas GTS

随着煤炭资源的大规模开采,越来越多的建(构)筑物不可避免的受到沉陷影响,这对建(构)筑物的安全构成了极大威胁。为保证镇城底矿22620工作面上方兴能电厂管状皮带的正常运转,以镇城底矿地质采矿条件为基础,通过Midas GTS岩土结构有限元分析软件,对管状皮带在地下开采过程的移动和变形进行了动态预计,并与现场实测数据作了对比。研究结果表明,所建立数值模型满足工程精度需要,工作面推进至310m时,管状皮带的移动变形值大于规程规定的临界变形值,皮带将受到采动破坏。根据预计结果提出了皮带走廊的修补保护措施,以保证电厂正常运营。

With the mining of coal resources,more and more building are influenced by the subsidence. For the sake of the normal operation of ash discharge pipe of Gujiao xingneng plant, which pass over the 22620 face of Zhenchengdi colliery,the movement and deformation are predicted based on the finite element analysis software Midas GTS. The forecasts and measured data are compared. The results show that, the numerical model established meet with engineering need. When the working face was advanced to 310 meters, the movement and deformation of belt is greater than the critical deformation value of the regulations. The belt will suffer from mining damage. Protection measures for belt are put forward to ensure the normal operation.