四川水力发电2025，Vol.44Issue(1)：21-24,4.DOI:10.20196/j.cnki.scslfd.20250106
银江水电站坝址区河床粉质黏土的工程地质特性及二期基坑边坡稳定性分析
Engineering Geological Characteristics of Silty Clay in Riverbed and Stability Analysis of Second Stage Foundation Pit Slope in Dam Area of Yinjiang Hydropower Project
刘培培 1贺金明 1朱信波 1闻文1
作者信息
- 1. 长江三峡勘测研究院有限公司(武汉),湖北 武汉 430074
- 折叠
摘要
Abstract
The riverbed covering layer is deep in the dam site of Yinjiang Hydropower Project.After the exca-vation of the second stage foundation pit,the cofferdam and the foundation pit will form a soil slope with a height of 67m.The soil slope is dominated by silty clay with weak permeability and low strength.Therefore,the analysis of silty clay engineering geological characteristics is of great significance to the determination of slope excavation and support scheme,the study of construction scheme and the prediction of construction process.The stability of the second stage foundation pit slope is studied in the construction stage,which pro-vides strong support for the excavation scheme design and construction organization design of the second stage foundation pit.The second stage foundation pit slope has been tested in three flood seasons,and it runs safely without instability accident.Based on the results of drilling and physical and mechanical tests,the distribution,physical and mechanical properties of silty clay are analyzed comprehensively,and the research situation is de-scribed,which can provide reference for other similar survey,design and construction.关键词
粉质黏土/二期基坑/工程勘察/边坡稳定/银江水电站Key words
Silty clay/Second stage foundation pit/Survey/Slope stability/Yinjiang Hydropower Project分类
水利科学引用本文复制引用
刘培培,贺金明,朱信波,闻文..银江水电站坝址区河床粉质黏土的工程地质特性及二期基坑边坡稳定性分析[J].四川水力发电,2025,44(1):21-24,4.
