露天采矿爆破振动过程中边坡稳定性极限分析  

Limit Analysis of Slope Stability During Blasting Vibration in Open-pit Mining

作　　者：包有才 Bao Youcai(Ningxia General Team of China Building Materials Industry Geological Exploration Center,Ningxia Yinchuan 750021)

机构地区：[1]中国建筑材料工业地质勘查中心宁夏总队,宁夏银川750021

出　　处：《山东煤炭科技》2022年第10期136-138,共3页Shandong Coal Science and Technology

摘　　要：为了确保露天采矿施工作业能够安全有序地进行,提出露天采矿爆破振动过程中边坡稳定性极限分析方法。根据摩尔-库伦屈服理论构建采矿爆破振动作用下边坡破坏机构模型,在模型上求解边坡爆破荷载外力、自身重力做功功率,以及内部有效黏聚力、毛细黏聚力引起的内部能量耗散率,利用强度折减法求出边坡稳定性极限值。经实验证明,设计方法分析偏差较小。In order to ensure that the construction operation of open-pit mining can be carried out safely and orderly,a limit analysis method of slope stability in the process of blasting vibration in open-pit mining is put forward.According to Moore-Coulomb yield theory,the model of slope failure mechanism under mining blasting vibration is constructed,and the external force of slope blasting load,gravity work power and internal energy dissipation rate caused by internal effective cohesion and capillary cohesion are solved on the model,and the limit value of slope stability is obtained by strength reduction method.It is proved by experiments that the analysis deviation of the design method is small.

关 键 词：露天采矿 爆破振动 边坡 稳定性 摩尔-库伦屈服理论 

分 类 号：TD824.7[矿业工程—煤矿开采]