摘要
露天矿山边坡稳定性直接关系到矿山的安全,本文针对某露天矿山边坡稳定性进行分析,通过分析结构面与坡面关系,初步分析边坡可能存在破坏模式.对初步分析破坏模式利用极限平衡法进行分析,计算得出各工况下各剖面安全系数均满足《非煤露天矿边坡工程技术规范》(GB 51016-2014)要求;利用二维弹塑性有限元数值模拟分析法,分析各工况下各剖面的滑移机理和安全系数,得出初步判断的边坡整体破坏模式与计算结果一致,并通过极限平衡分析法和二维弹塑性有限元数值模拟分析法计算出的边坡安全系数综合分析该矿山边坡稳定性,边坡总体稳定,为露天矿山边坡稳定性研究提供参考,为矿山安全高效开采提供保障.
Abstract
The stability of open-pit mine slopes is directly related to the safety of the mine.This article analyzes the stability of a certain open-pit mine slope and preliminarily analyzes the possible failure modes of the slope by analyzing the relationship between structural planes and slope surfaces.The preliminary analysis of the failure mode was conducted using the limit equilibrium method,and the safety factors of each profile under various working conditions were calculated to meet the requirements of the"Technical Code for Non Coal Open pit Mine Slope Engineering"(GB 51016-2014);Using the two-dimensional elastic-plastic finite element numerical simulation analysis method,the slip mechanism and safety factor of each profile under various working conditions were analyzed,and the preliminary judgment of the overall failure mode of the slope was consistent with the calculation results.The slope safety factor calculated by the limit equilibrium analysis method and the two-dimensional elastic-plastic finite element numerical simulation analysis method was comprehensively analyzed to determine the stability of the mine slope.The overall stability of the slope provides a reference for the study of slope stability in open-pit mines and guarantees safe and efficient mining.
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