四川盆地西南部山区近水平岩层地区某崩塌堆积体分区特征及稳定性评价
A preliminary investigation and stability evaluation of a collapsed accumulation in a near horizontal rock layer area in the mountainous region of southwestern Sichuan Basin
周静1
作者信息
- 1. 广西壮族自治区桂林水文工程地质勘察院有限公司,广西 桂林 541002
- 折叠
摘要
四川盆地西南部山区道路展线常须经过发育有崩塌堆积体的近水平岩层的沟谷区域,道路开挖易诱发崩塌堆积体自身基本稳定的坡体发生变形和滑移,对施工和人员安全有极大影响.本文以四川盆地西南部山区某地公路修建过程中遇到的崩塌堆积体为例,查明了崩塌堆积体的规模、地层特征及破坏模式等.该崩塌堆积体整体基本稳定,但在强降雨和地震工况下易发生局部滑塌,而拟展线位位于该崩塌堆积体坡体的中下部,变形垮塌对堆积体周边施工和过往人员的威胁较大.
Abstract
In the southwestern mountainous area of Sichuan Basin,the highway road often has to pass through the gully area with collapsed accumulation bodies in the near horizontal rock layers,it is easy to induce the deformation and slippage of the basically stable slope body of the collapsed accumulation body itself,which has a great influence on the safety of the construction and the personnel.Taking the collapse during the highway construction in a mountainous area in the southwestern part of the Sichuan Basin as an example,this paper identified the scale,stratigraphic characteristics,failure mode of the collapse.The collapsed accumulation is basically stable as a whole,but it is prone to local collapse under heavy rainfall and strong earthquake conditions.Considering that the road is located in the middle and lower part of the slope of the collapsed accumulation,the deformation and collapse would threaten the surrounding construction and past personnel of the collapse.
关键词
四川盆地/山区道路/崩塌堆积体/破坏模式/稳定性Key words
Sichuan Basin/mountain road/collapsed accumulation/failure mode/stability引用本文复制引用
出版年
2024
NETL
NSTL
万方数据