地震作用下某矿山排土场边坡稳定性分析  

Stability analysis of slope of a mine dump under earthquake action

作　　者：耿清友 康志强 张雪岩[2,3] 李蕾 

机构地区：[1]开滦(集团)煤业分公司生产技术部,河北唐山063018 [2]华北理工大学矿业工程学院,河北唐山063210 [3]河北省矿业开发与安全技术重点实验室,河北唐山063210

出　　处：《化工矿物与加工》2017年第12期50-52,56,共4页Industrial Minerals & Processing

基　　金：河北省自然科学基金项目(E2016209111)

摘　　要：以唐山市某矿山排土场边坡为例,利用数值模拟软件GeoStudio研究其在不同地震烈度作用下的稳定性,通过分析该边坡在3种加速度峰值下的安全系数变化情况可知,当软件输入的地震波加速度峰值不断增大时,该矿山排土场边坡的安全系数不断降低。在地震作用下,当引起排土场边坡产生滑塌的屈服加速度大于地震波的加速度峰值时,边坡处于相对稳定状态;而当地震波加速度峰值大于边坡发生滑塌的屈服加速度时,排土场边坡的稳定性将大幅度降低直至失稳。With the slope of a mine dump in Tangshan City asan example,its stability under different seismic intensities is ana- lyzed using the numerical simulation software Geo Studio. Analy- sis of the variation of safety factor for the slope under three accel- eration peaks shows that the peak of seismic wave by the software input increases constantly 0 the safety factor for dump slope for the mine decreases steadily. When the yield acceleration for the col- lapse of dump slope under the action of earthquake is greater than the peak of seismic wave,the dump slope is relatively stable. And when the peak of seismic wave acceleration is greater than the yield acceleration at collapse of the dump slope, the stability of dump slope will be significantly reduced.

关 键 词：排土场 边坡稳定性 地震作用 屈服加速度 GeoStudio 

分 类 号：TD804[矿业工程—矿山开采]