矿产保护与利用2024，Vol.44Issue(4)：74-84,11.DOI:10.13779/j.cnki.issn1001-0076.2024.04.009
某多金属矿露天开采终了边坡结构参数分析及稳定性验算
Structural Parameter Analysis and Stability Calculation of End-of-pit Slope of a Polymetallic Mine
刘国寅 1孙发院 2丁军明 1杜德岗 1尹修平 1张鲲华1
作者信息
- 1. 昆明坤泽矿业技术有限责任公司,云南 昆明 650051
- 2. 云南亚融矿业科技有限公司,云南 昆明 650033
- 折叠
摘要
Abstract
The slope stability of open-pit polymetallic mines is the key problem to ensure mine safety and environmental protection.In this paper,orthogonal experimental design,limit equilibrium method and FLAC3D numerical simulation are used to systematically analyze the structural parameters of the end slope of an open-pit mine and verify its stability.Through orthogonal experiment design,slope stability parameters under different slope height,slope Angle and geological conditions were investigated,and the safety factor was calculated by using simplified Bishop method and Morgenstern-Price method.The results showed that under natural conditions,the safety coefficient of each slope was greater than 1.17,which was in line with the standard requirements.In order to further verify the stability of the slope,FLAC3D numerical simulation combined with strength reduction method was used for three-dimensional stability analysis.The simulation results showed that there were some risks in the top and local areas of the slope surface,but the overall safety factor was 1.78,indicating that the slope was in a stable state.This study not only provides theoretical basis and practical guidance for slope design and stability evaluation of open-pit mine,but also provides reference for similar engineering projects,which has important value of improving mining safety and prolonging mine life.关键词
边坡稳定性/Bishop法/Morgenstern-price法/强度折减理论/FLAC3DKey words
slope stability/bishop method/morgenstern-price method/strength reduction theory/FLAC3D分类
矿业与冶金引用本文复制引用
刘国寅,孙发院,丁军明,杜德岗,尹修平,张鲲华..某多金属矿露天开采终了边坡结构参数分析及稳定性验算[J].矿产保护与利用,2024,44(4):74-84,11.
