期刊
APPLIED SCIENCES-BASEL
卷 12, 期 9, 页码 -出版社
MDPI
DOI: 10.3390/app12094550
关键词
earth-fill dam; transient flow; rapid drawdown; slope stability; coupled-stability analysis
This article presents a comprehensive study on the stability analysis of earth-fill dams under rapid drawdown and transient flow conditions. The study provides stability analysis charts using coupled finite-element numerical and analytical limit equilibrium procedures. The results show that reducing the permeability of the core material can prevent seepage but also increases the instability risk of the upstream slope caused by rapid drawdown.
The presented article provides a comprehensive study on the stability analysis of earth-fill dams under rapid drawdown and transient flow conditions used to prepare stability analysis charts by conducting coupled finite-element numerical and analytical limit equilibrium procedures. In this regard, the impacts of different rapid drawdown conditions on the safety factor of the Alavian earth-fill dam are determined. The slope stability charts present for both shallow and deep slip surfaces with various permeabilities are verified by ground information obtained with extensive instrumentation on the dam's site. The results showed that by decreasing the permeability of the core's material, despite preventing seepage, the instability risk of the upstream slope as a result of rapid drawdown intensifies. Also, as stability charts can be stated, with increasing the slip surface's depth and decreasing the hydraulic hydration, the reliability decreases, and the sliding surfaces' sensitivity increases based on the drawdown rates, which have been revealed to be from 0.2 to 0.6, the most critical state for safety factors, showing significant declines.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据