摘要
本文通过对2007年10月渝湘高速公路酉阳至黔江段建设过程中,由公路边坡开挖引起的大型滑坡变形特征与常规土质滑坡变形特征不一样的特点入手,综合分析滑坡物质来源、结构组成,滑床特征,发现对具有坚硬完整盖层和软弱下卧层的巨厚层堆积体也可产生类似边坡侧向扩离的破坏方式,并总结出对在这类巨厚层堆积体地区进行工程建设时重视区域填图,分析地质发展史,采用多种手段查明堆积体结构的重要性,获得的稳定性分析经验对在地震等因素影响下瞬时堆积巨厚层物质的区域进行工程建设具有参考指导意义。
Through the construction of Yuxiang Highway （Youyang to Qianjiang） in Oct. ,2007, considering the feature that the large-scale landslide ＇ s, deformation character caused by the excavation of road slope is different from the normal soil landslide＇s this paper synthetically analyzes the sources of landslide substance, landslide structure, slide plate＇s character and it is found that the thick-layer deluvium with the adamantine perfect cover and weak un- derlying stratum also can generate the destruction which is similar to the slope lateral diffusion＇ s. At the same time , when the projects are excavated in the area of thick-layer deluvium, people should pay attention to the regional map plotting, to analyze the development history of geology and adopt a variety of measures to find out the importance of de- luvium＇ s structure. The experience about the analysis for the stability has the reference guidance meanings to con- struction projects in the area influenced by the elements like the earthquake with immediately accumulation of thick-layer substance.
出处
《地下空间与工程学报》
CSCD
北大核心
2010年第A02期1591-1596,共6页
Chinese Journal of Underground Space and Engineering
关键词
公路边坡
坚硬盖层
大涵滑坡
地震
扩离
road slope
adamantine cover
Dahan landslide
earthquake
leaving slope
