黑龙江科技大学学报2025，Vol.35Issue(3)：409-416,8.DOI:10.3969/j.issn.2095-7262.2025.03.010
渗流条件下露天矿山边坡地应力变化特征及其稳定性
Variation characteristics and stability of ground stress in open pit slope under seepage condition
摘要
Abstract
This paper aims to investigate the effect of engineering excavation on the changes in slope stress and safety factors.By taking a open-pit marble mine in Heilongjiang as the project background,the study consists of investigating the variation of the ground stress under different mining depths and media by using GeoStudio slope simulation software,and comparing and analyzing the safety factors under vari-ous conditions.The results show that under the influence of groundwater seepage,the slope ground stress increases with the deeper excavation.The tensile stress at the slope bottom toe rises by 256.38 kPa after the fifth excavation compared to the first excavation,and the maximum tensile stress on the slope surface rises by 276.9 kPa.The safety factor of the slope is negatively correlated with excavation depth.Under seepage conditions,the safety factor after the fifth excavation has the decrease maximum of 47.6%,while under non-seepage conditions,the decrease maximum of the safety factor is 42.7%.The maximum of internal ground stress appears along with the increase of the unit weight and Poisson′s ratio of the medi-um rock mass.关键词
露天矿山/边坡稳定性/渗流作用/地应力变化特征Key words
open pit mine/slope stability/percolation/variation characteristics of ground stress分类
矿山工程引用本文复制引用
蒲文龙,谷成志,毕业武..渗流条件下露天矿山边坡地应力变化特征及其稳定性[J].黑龙江科技大学学报,2025,35(3):409-416,8.基金项目
黑龙江省自然科学基金优秀青年项目(YQ2019E033) （YQ2019E033）
