摘要
某水库在坝址施工过程中,其左坝肩山坡出现滑坡变形迹象,文章根据该滑坡的地质背景,采取地表地质调查、地形测绘、钻探等综合勘查手段,查明了滑坡区的基本地质条件和滑坡体的基本地质特征,分析了滑坡的性质和滑坡发生的形成机制。研究认为滑坡区的地形条件、断层及裂隙发育、组成滑坡的物质组成主要为碎石夹黏土、基覆界面处发育有性质较差的底滑面和地表水下渗运移是滑坡发生的内在原因,连续性降雨和坝址施工开挖坡脚为滑坡发生的外在原因。
During the construction of a reservoir’s dam site,there are signs of landslide deformation on the left abutment slope of the dam. According to the geological background of the landslide, this paper adopts comprehensive exploration methods such as surface geological survey, topographic mapping and drilling to find out the basic geological conditions of the landslide area and the basic geological characteristics of the landslide body, and analyzes the landslide properties and its formation mechanism. According to the research, the topographic conditions, fault and fissure development in the landslide area, the material composition of the landslide area is mainly gravel and clay, the bottom slip surface with poor properties at the foundation cover interface and the infiltration and migration of surface water are the internal causes of the landslide. Continuous rainfall and the excavation of the slope foot in the dam site construction are the external causes of the landslide.
作者
李永松
赵温亮
刘宗林
LI Yongsong;ZHAO Wenliang;LIU Zonglin(PowerChina Guiyang Engineering Corporation Limited,Guiyang,Guizhou 550008)
出处
《工程技术研究》
2022年第21期201-203,共3页
Engineering and Technological Research
关键词
山体滑坡
滑坡类型
在建水库
坝肩
landslide
landslide type
reservoir under construction
dam abutment
作者简介
李永松,男,硕士,工程师,研究方向为工程地质。
