爆破震动对西湾露天煤矿边坡稳定性的影响  

Effect of blasting vibration on slope stability in Xiwan Open-pit Mine

作　　者：井宇航 雷尧 JING Yuhang;LEI Yao(National Energy Group Shenyan Coal Co.,Ltd.,Yulin 719000,China;School of Energy Engineering,Xi’an University of Science and Technology,Xi’an 710054,China)

机构地区：[1]国家能源集团神延煤炭有限责任公司,陕西榆林719000 [2]西安科技大学能源学院,陕西西安710054

出　　处：《露天采矿技术》2024年第1期88-91,共4页Opencast Mining Technology

摘　　要：爆破震动是影响边坡稳定性的重要因素之一,为了探究爆破产生的震动对西湾露天煤矿边坡稳定性的影响情况,采用数值模拟、极限平衡理论等研究方法与手段,通过爆破监测数据测拟合出爆破监测点处的震动加速度,对施加了不同数值的水平方向震动加速度的坡面进行稳定性模拟。结果表明:当水平方向的震动加速度从0上升到0.03时,其坡面的稳定系数下降0.19;当水平方向的震动加速度从0.03上升到0.05时,其坡面的稳定系数下降0.114;爆破震动对边坡稳定性的影响会随着爆破震动加速度的增大而逐渐降低。Blasting vibration is one of the important factors affecting the stability of slopes.In order to analyze and study the impact of blasting-induced vibrations on slope stability of Xiwan open-pit,the article adopts numerical simulation and limit equilibrium theory as research methods and approaches,and fits the vibration acceleration at the blasting monitoring point using blasting monitoring data,and simulates the slope surface subjected to horizontal vibration acceleration.The results indicate that when the horizontal vibration acceleration increases from 0 to 0.03,the stability coefficient of the slope decreases by 0.19.When the horizontal vibration acceleration further increases from 0.03 to 0.05,the stability coefficient of the slope decreases by 0.114.The influence of blasting vibration on slope stability gradually diminishes as the blasting vibration acceleration increases.

关 键 词：爆破震动 数值模拟 极限平衡理论 震动加速度 边坡稳定性 

分 类 号：TD824.7[矿业工程—煤矿开采]