爆破作用下别斯库都克露天矿边坡变形破坏机理  

Slope deformation and failure mechanism of Beskuduk Open-pit Mine under blasting action

作　　者：林令鑫 王振伟 黄科伟 李元浩 郭海棣 LIN Lingxin;WANG Zhenwei;HUANG Kewei;LI Yuanhao;GUO Haidi(School of Civil Engineering,North China University of Technology,Beijing 100144,China)

机构地区：[1]北方工业大学土木工程学院,北京100144

出　　处：《露天采矿技术》2023年第6期48-51,共4页Opencast Mining Technology

摘　　要：为探究新疆别斯库都克露天矿边坡变形破坏问题,结合工程实际,基于Midas GTS NX数值模拟软件,运用其内部自带的动力荷载生成器做出模拟爆炸的时程分析函数,再结合动力分析中的曲面动力模块模拟出爆炸震动时对露天矿边坡变形的影响,阐明边坡变形破坏机理。研究表明:黏聚力对边坡的失稳概率影响较大;随着内摩擦角的增加,边坡失稳概率近乎线性减小;在循环爆破过程中,第1阶段边坡顶部以及台阶连接处受到的影响最大,第2阶段会出现由上至下的坍塌现象,第3阶段过程中边坡发生多层滑坡破坏。In order to explore slope deformation and failure problem of Beskuduk Open-pit Mine in Xinjiang,combined with the actual engineering situation,based on Midas GTS NX numerical simulation software,by time history analysis function of the explosion simulation using its built-in dynamic load generator and the surface dynamic module in the dynamic,the article analysis to simulate the influence of explosion vibration on the deformation of the open-pit mine slope,and clarifies the deformation and failure mechanism of the slope.The results show that cohesion has a greater influence on the probability of slope instability.With the increase of internal friction angle,the probability of slope instability decreases almost linearly.In the process of cyclic blasting,the top of the slope and the junction of the steps in the first stage are most affected,the collapse phenomenon from top to bottom occurs in the second stage,and the multi-layer landslide failure occurs on the slope in the third stage.

关 键 词：边坡稳定性 爆破震动 边坡破坏机理 Midas GTS NX 塑性区 

分 类 号：TD562.1[矿业工程—矿山机电]