摘要
为了研究露天矿边坡不同断面形态对于边坡稳定性的影响,以黑山露天矿南帮边坡为研究对象,基于毕肖普法的优化方法理论与强度折减法的数值模拟研究,分析了边坡在不同断面形态下抗滑力与下滑力之间的数值变化关系,探究了边坡在不同断面形态下的稳定性关系,并提出了边坡断面形态优化方法。结果表明:存在底面倾角θ将边坡分为“抗滑段”与“下滑段”2部分;当边坡断面形态差异点主要分布于下滑段时,不利于边坡稳定性,当边坡断面形态差异点主要分布于抗滑段时,有利于边坡稳定性。
In order to study the influence of different section forms of the open-pit mine slope on the slope stability,taking the south slope of Heishan Open-pit Mine as an example,based on the optimization method theory of the simplified Bishop method and the numerical simulation study of the strength reduction method,the article analyzes numerical variation relationship between the anti sliding force and the sliding force of the slope under different section shapes,explores the stability relationship of the slope under different section shapes,and proposes the slope section shape optimization method.The results show that there is a bottom dip angleθ,the slope is divided into"anti sliding section"and"sliding section".When the difference of slope section form is mainly distributed in the sliding section,it is not conducive to the slope stability.When the difference of slope section shape is mainly distributed in the anti sliding section,it is conducive to the slope stability.
作者
郭海建
成功
GUO Haijian;CHENG Gong(China Coal Technology and Engineering Group Shenyang Research Institute,Fushun 113122,China;State Key Laboratory of Coal Mine Safety Technology,Fushun 113122,China;Xinjiang Coal Design and Research Institute Co.,Ltd.,Urumqi 830091,China)
出处
《露天采矿技术》
CAS
2023年第6期56-60,共5页
Opencast Mining Technology
关键词
断面形态
边坡稳定性
强度折减法
数值变化
形态差异
cross section form
slope stability
strength reduction method
value change
morphological difference
