不同强降雨类型对某矿区边坡影响的数值模拟研究  

Numerical simulation study on the impact of heavy rainfall on slopes

作　　者：聂正 周昌育 王靖禹 张电吉[1] NIE Zheng;ZHOU Changyu;WANG Jingyu;ZHANG Dianji(School of Resources and Safety Engineering,Wuhan Institute of Technology,Wuhan 430074,China;School of Resource and Civil Engineering,Northeastern University,Shenyang 110819,China;School of Mechanics and Materials,Hohai University,Nanjing 210098,China)

机构地区：[1]武汉工程大学资源与安全工程学院,武汉430074 [2]东北大学资源与土木工程学院,沈阳110819 [3]河海大学力学与材料学院,南京210098

出　　处：《有色金属(矿山部分)》2025年第1期45-50,64,共7页NONFERROUS METALS(Mining Section)

基　　金：湖北省中央引导地方科技发展专项(2017ZYYD007);武汉工程大学研究生教育创新基金(CX2022593)。

摘　　要：以往的研究中,很少有研究降雨类型对边坡影响的。为了探究不同强降雨类型对边坡的影响规律,以前峰型、阶梯型、后峰型降雨为例,采用数值模拟的方法,研究三种夏季常见强降雨类型对边坡孔隙水压、位移、安全系数的影响。结果表明:阶梯型降雨对边坡内孔隙水压提升最大,影响的深度也最大;在孔隙水压随时间上升过程中,前峰型降雨的图像大致呈凸函数、阶梯型降雨大致呈先凹后直线、后峰型降雨大致呈凹函数。在位移随时间变化图像中:前峰型降雨呈凸函数;阶梯型降雨呈先凹再向直线段过渡,后呈现凸函数形状;后峰型降雨呈凹函数。三种强降雨类型均大幅降低了边坡安全系数,阶梯型降雨降低的幅度最大,后峰型降雨次之,前峰型降雨的影响最小。研究结论可为我国夏季暴雨期边坡的监测、防治提供一定的理论依据。In previous studies,there are few studies on the influence of rainfall type on slope.In order to explore the influence law of different types of heavy rainfall on slope,taking front-type,ladder-type and post-peak rainfall as examples,the influence of three common heavy rainfall types in summer on slope pore water pressure,displacement and safety factor was studied by numerical simulation method.The results showed that the ladder-type rainfall had the greatest effect on the pore water pressure and the greatest effect on the depth.In the process of pore water pressure rising with time,the image of front-type rainfall was roughly convex function,that of ladder-type rainfall was roughly concave first and then straight line,and that of post-peak rainfall was roughly concave function.In the image of displacement changing with time,the front-type rainfall was convex function;The ladder-type rainfall was concave first and then a straight line,and then a convex function.And the post-peak rainfall was a concave function.The three types of heavy rainfall all greatly reduce the slope safety factor,and the ladder-type rainfall decreases the most,followed by the post-peak rainfall,and the front-type rainfall has the least impact.The conclusions of the study can provide a certain theoretical basis for the monitoring and control of slopes during summer heavy rainfall.

关 键 词：强降雨 边坡稳定 数值模拟 降雨类型 孔隙水压 安全系数 

分 类 号：TU452[建筑科学—岩土工程] TV139.16[建筑科学—土工工程] TD854.6[水利工程—水力学及河流动力学]