摘要
李师关隧道是十漫高速公路的一座小净距隧道,在建设过程中该隧道洞口先后两次滑坡。文章探讨了滑坡的过程及其处理情况;重点分析了两次滑坡,特别是第二次滑坡产生的原因;采用弹塑性有限元和强度折减法以及ANSYS软件进行了计算;得到了一些规律性的结论。分析结果说明隧道洞口刷坡坡率不宜过大,以尽量减小对山体的扰动;应遵循施工工艺,保证施工质量;如发生危险情况,应及时采取加固措施以避免险情扩大。
Lishiguan Tunnel is a tunnel of Shiman （ Shiyan - Manchuanguan ） Expressway with small interval. In the tunnel construction there were two landslides occurred. The progress and treatment of the landslide have been analyzed in this paper. The masons of the landslide, especially for the second landslide, are studied. The elasto - plastic finite element analysis, strength reduction method and ANSYS software are used for the calculation. Some conclusions have been obtained. The analytical results show that the cutting slope at the tunnel mouth should not be too large, so that the mountain body may not be disturbed. Also, the＇construction technique should be followed and the quality should be guaranteed. If the dangerous eases took place, the consolidated methods should be taken and the dangerous situation may not be enlarged.
出处
《地下空间与工程学报》
CSCD
2006年第B08期1445-1450,共6页
Chinese Journal of Underground Space and Engineering
关键词
滑坡
两郧断裂带
强度折减法
隧道
landslide
Liangyun fracture band
strength reduction method
tunnel
