山西某露天矿边坡稳定性分析与评价
Analysis and evaluation of slope stability in the open-pit mine of Shanxi
马富国 1马明康2
作者信息
- 1. 山西省忻州市河曲县应急保障中心,山西 忻州 036500
- 2. 中煤科工集团沈阳研究院有限公司,辽宁 抚顺 113122;煤矿安全技术国家重点实验室,辽宁 抚顺 113122
- 折叠
摘要
为了分析山西某矿北帮黄土层边坡边坡变形破坏机理及受持续降雨影响后边坡稳定性的变化大小,基于现有地质资料及现场实际作业情况,建立了北帮BB23-1 剖面的工程地质简化模型及计算模型,通过有限元模型研究方法对黄土层边坡在降雨 9d内的变化情况进行了模拟分析,确定了其边坡变形破坏模式、稳定系数的变化情况.结果表明:随着降雨量的不断增多,黄土层力学抗剪强度降低,在降雨到第 9d时边坡处于极限平衡状态.
Abstract
In order to analyze the deformation and failure mechanism of the loess slope in the northern slope of a certain mine in Shanxi and the changes in slope stability after continuous rainfall,a simplified engineering geological model and calculation model of the BB23-1 section in the northern slope were established based on existing geological data and actual on-site operations.Through research methods and means such as finite element modeling,the deformation and failure mode of the loess slope was determined based on the changes in the loess slope within 9 days of rainfall The variation of stability coefficient indicates that with the continuous increase of rainfall,the mechanical shear strength of the loess layer decreases,and the slope is in a limit equilibrium state on the 9th day of rainfall.
关键词
黄土边坡/数值模拟/极限平衡/强度折减/稳定性评价Key words
loess slope/numerical simulation/ultimate equilibrium/strength reduction/stability evaluation引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据