摘要
我国目前主要采用修建贮灰坝来填贮灰渣,通过逐级加高子坝提升贮灰量,坝体稳定性校核则成为坝体安全运行的前提。以贵州某工程实例为基础,基于GEO-SLOPE软件编制计算程序,研究极限平衡法中3种典型的分析方法在计算坝坡稳定性当中的应用;探究安全系数随坝坡坡高、坡角增大的变化规律,以及滑弧深度随坝坡高度增大的变化规律。研究表明,安全系数随坝坡坡高、坡角增大而逐步减小,滑弧深度随坝坡高度增大而增大。
Ash-retention dams are widely built in China to store ash, the amount of which can be increased by gradually heightening the sub-dam. Therefore, it is the precondition for the safe operation to check the stability of the dam. With a project in Guizhou Province as a case, this paper draws up calculating program based on GEO-SLOPE software and studies the application of three typical analysis methods of limit equilibrium to the calculation of dam slope stability, and explores the change rule of safety coefficient with the change of slope height and slope angle as well as the change rule of slippery arc depth with the increase of slope height. The research indicates that the safety factor gradually decreases with the increase of the height and angle of dam slope, and that the depth of slippery arc gradually increases with the increase of dam slope height.
出处
《国土资源科技管理》
北大核心
2013年第2期71-75,共5页
Scientific and Technological Management of Land and Resources
基金
国家重点基础研究发展计划(973)项目(2010CB226802)
国家自然科学基金项目(50879049)
国家自然科学基金煤炭基金重点项目(51134018)
关键词
贮灰坝
极限平衡法
坝坡稳定
坝高
滑弧深度
ash storage dam
limit equilibrium method
dam slope stability
dam height
depth of slippery arc
