盖家阴山滑坡的识别与稳定性分析

Identification and stability analysis of Gaijiayinshan landslide

盖家阴山滑坡位于新建铁路兰渝线锹峪河特大桥（DK127＋100～DK127＋900）段左侧，滑坡特征明显，为一巨型滑坡。根据地形地貌、地层结构及对当地老者的调查，初步判断此滑坡为地震引发滑坡。通过勘察发现此滑坡具有三层滑面，一个主滑面，二个次生滑面，经过计算分析二个次生滑体已经稳定，但主滑体在滑体完全饱和的极端情况下仍然可能复活，因此建议铁路线尽量绕避此滑坡并进行抗震验算。

Gaijiayinshan Iandslide was located in the left of Qiaoyu River （DK127＋100-DK127＋900） as a part of newly built Lanyu railway, the sli was significant as for a huge landslide. According to topography and geom Super large Bride ding characteristics orphology, stratum structure and investigation by local old mon, we can make a pre-judgment that the landslide is a earthquake triggered landslide. By investigation, we can found that the landslide have three sliding surface,including a main sliding surface and the another two secondary sliding surface. The calculation results have shown that the two secondary sliding body has been stabilized, but the main sliding body may still slide in the extreme circumstances that the landslide is completely saturated. It is therefore proposed that the railway line is to avoid this landslide as much as possible and do seismic checking computations.