摘要
该文采用有限元强度折减法,强度指标比原定的降低了1.29倍。同时,在折减过程中,通过计算分析剪应力集中部位,确定滑面是在老滑面的基础上发展的部分新滑面,形成新的剪出口。利用折减后强度参数,计算对比新滑面与次级滑面的滑坡推力,认为挡墙破坏为新滑面推力过大所致,与原设的次级滑面为最危险滑面情况不符,计算结果与实际情况较吻合。
Using strength reduction FEM , the calculated C,φ value is less 1.29 times than the tested value . In the reduction , a new slide surface is produced on the concentration of sheafing streess and this new slide surface is calculated as an new shear outlets. The thrusting force is compared between the new slide surface and the old one. It is calculated that the restaining wall is broken because of the new thrusting force . The calculation results is consistent with the real condition.
出处
《山东煤炭科技》
2008年第5期130-131,共2页
Shandong Coal Science and Technology
关键词
强度折减法
有限元
滑坡
煤矿
strength reduction
FEM
landslide
coal mining
