基于块石随机分布模型的土石混合体边坡稳定性研究  

Stability Analysis for Soil-Rock Slope Based on Rock Random Distribution Model

作　　者：王希警 杨溢 付俊 韦芊竹 丁秋月 WANG Xijing;YANG Yi;FU Jun;WEI Qianzhu;DING Qiuyue(Faculty of Public Security and Emergency Management,Kunming University of Science and Technology,Kunming 650093,Yunnan,China;Kunming Prospecting Design Institute of China Nonferrous Metals Industry Co.,Ltd.,Kunming 650051,Yunnan,China)

机构地区：[1]昆明理工大学公共安全与应急管理学院,云南昆明650093 [2]中国有色金属工业昆明勘察设计院有限公司,云南昆明650051

出　　处：《矿冶工程》2025年第1期7-13,共7页Mining and Metallurgical Engineering

基　　金：国家自然科学基金(41861134008);云南省重点研发计划项目(202003AC100002);云南省院士专家工作站科研项目(202405AF140045);昆明市中青年学术和技术带头人科技专项(202405B040035)。

摘　　要：为了使土石混合体边坡稳定性分析更加符合实际,提出了一种基于Fortran语言在边坡模型中随机生成块石的方法,建立土石混合体边坡模型,对5种不同含石率的土石混合体边坡进行稳定性研究。结果表明,随着含石率增加,土石混合体边坡稳定性逐渐提高,边坡潜在滑动面发生变化,塑性贯通区呈现“绕石”“分流”“包含”3种典型的破坏模式,边坡X方向位移始终为坡脚最大,最大总位移由坡脚向边坡中部转变,最后回到坡底位置。将本方法仿真结果与2种典型等效强度参数模型计算结果进行对比,得出本方法计算的安全系数与其他2种模型得到的安全系数相差较大,且变化趋势不同。未来,可针对其他复杂工况下的力学特征和规律,以及考虑节理裂隙等影响进一步优化模型。In order to conduct more practical stability analysis for soil-rock slope,it was proposed to use Fortran language in a slope model to randomly generate rocks,based on which a soil-rock slope model was established.The stability analysis was conducted respectively for soil-rock slopes with five kinds of rock content.It is found that as the rock content therein increases,the slope stability gradually improves and the potential sliding surface of the slope also changes.The plastic zone penetration presents three typical modes:rock detouring,shunting and rock inclusion.The displacement in X direction is always the largest at the foot of the slope,and the maximum total displacement starts at the foot,moving to the middle of the slope and finally back to the bottom of the slope.The simulation results obtained by this method were compared to the calculation results of models with two typical equivalent strength parameters,and it is concluded that the safety factor calculated by this method is quite different from that obtained by the other two models,and also different in changing trend.In the future,this soil-rock slope model can be further optimized for other complex working conditions based on the mechanical characteristics and laws,with the influence of joints and cracks also taken into consideration.

关 键 词：边坡稳定性 土石混合体边坡 块石随机分布 强度折减 安全系数 边坡变形 位移 

分 类 号：TD854[矿业工程—金属矿开采] TU43[矿业工程—矿山开采]