灰岩矿露天边坡滑动模式及稳定性计算分析
Sliding Mode Analysis and Stability Calculation of Open-pit Slope in Limestone Mines
彭建谋 1吴会军 1姜卫国 1姚俊伟 1赵传鹏1
作者信息
- 1. 河南建筑材料研究设计院有限责任公司, 河南郑州 450002
- 折叠
摘要
针对矿山开采设计阶段露天边坡稳定性定量分析问题, 对河南省大型露天灰岩矿边坡特征、边坡潜在滑动模式及滑动面形态进行了分析研究, 并采用极限平衡法和强度折减法对其进行了稳定性计算, 结果表明灰岩矿露天边坡稳定性系数为1.48～2.12, 整体稳固性好, 平面形破坏较圆弧形破坏稳定性系数偏大;强度折减临界破坏时近似为圆弧形破坏, 两种方法计算结果接近, 与现场终了边坡稳定状态吻合.
Abstract
For the quantitative analysis of open-pit slope stability at the mining design stage, the characteristics of slopes, potential sliding modes and sliding shapes of large open-pit limestone mines in Henan province were discussed and analyzed.The limit equilibrium method and strength reduction method were used to calculate the slope stability.The results showed that the stability coefficient of open-pit slope in limestone mine was 1.48～2.12.The slope was stable on the whole, and the stability coefficient of plane failure was bigger than that of circular failure.Moreover, the critical failure of strength reduction method was similar as circular failure.The calculated results of above two methods were close, which accorded with the field stablility state of finished slope.
关键词
灰岩矿/露天边坡/滑动模式/稳定性计算Key words
Limestone mine/Open-pit slope/Sliding mode/Stability calculation引用本文复制引用
基金项目
河南省科技攻关项目(162102210385)
出版年
2018
NETL
NSTL
维普
万方数据