不同震级作用下排土场边坡动力响应特征与稳定性分析  

Dynamic response characteristics and stability analysis of dump slope under different earthquake magnitudes

作　　者：李耀宏 张梓旭 李树勋 袁林逊 刘正权 杨志全 LI Yaohong;ZHANG Zixu;LI Shuxun;YUAN Linxun;LIU Zhengquan;YANG Zhiquan(Liangshan Mining Co.,Ltd.,Liangshan Sichuan 615141,China;Faculty of Public Safety and Emergency Management,Kunming University of Science and Technology,Kunming 650093,China;China Tibet Jinlong Mining Co.,Ltd.,Ali Tibet 859299,China;Yunnan Pinvision Intelligent Technology Co.,Ltd.,Kunming 650032,China)

机构地区：[1]凉山矿业股份有限公司,四川凉山615141 [2]昆明理工大学公共安全与应急管理学院,昆明650093 [3]西藏金龙矿业股份有限公司,西藏阿里859299 [4]云南品视智能科技有限公司,昆明650032

出　　处：《有色金属(矿山部分)》2025年第1期31-37,共7页NONFERROUS METALS(Mining Section)

基　　金：国家自然科学基金资助项目(41861134008);云南省基础研究计划杰出青年项目(202301AV070066)。

摘　　要：地震灾害严重影响排土场边坡的稳定性,开展地震作用下排土场边坡稳定性的分析对于预防严重地质灾害、确保交通畅通等具有重要现实意义。以排土场边坡为研究对象,基于GeoStudio有限元方法构建地质模型,对不同震级地震场景下的排土场进行数值计算,分析排土场动力响应特征参数以及稳定性影响。结果显示,边坡各监测点的位移、加速度和速度随时间动态变化趋势相似,且震级增大,其数值随之增大,且边坡安全系数和变形随震级的增大而增大。动力响应特性揭示了位移和加速度峰值随高度增加呈非线性变化,且动态响应与排土场边坡高程正相关,地震波在边坡的传播过程中表现存在滞后效应;不同震级对边坡安全系数和变形程度有显著影响,地震下的排土场边坡存在滑坡风险。研究可为排土场边坡工程的抗震设计提供理论依据。The earthquake disaster seriously affects the stability of dump slope.Therefore,it is of great practical significance to analyze the stability of dump slope under seismic activity for preventing serious geological disasters and ensuring uninterrupted transportation.This study focuses on dump slopes as the research subject,utilizing the GeoStudio finite element software to construct geological models.Numerical simulations are conducted under various earthquake scenarios to assess the dynamic response characteristics and stability of dump slopes.The results show that the displacement,acceleration and velocity at various monitoring points exhibit similar dynamic trends over time,with these values,along with the safety factor and extent of deformation,all increasing as the magnitude of the seismic activity increases.The dynamic response characteristics reveal that the peak values of displacement and acceleration change nonlinearly with the increase of height,and the dynamic response is positively correlated with the elevation of the dump slope,and there is a lag effect in the propagation of seismic waves in the slope.Different seismic magnitudes have a significant impact on the safety factor and deformation degree of the slope.There is a risk of landslide in the dump slope under the earthquake.The research can provide a theoretical basis for the seismic design of dump slope engineering.

关 键 词：排土场边坡 地震作用 动力响应 稳定性分析 GeoStudio 

分 类 号：TD854.7[矿业工程—金属矿开采]