崩滑土体坡面运动过程研究现状与展望

崩滑土体坡面运动包括刚性块体整体滑动、崩滑泥流、崩滑破碎3种形态;根据粗颗粒间介质差异,崩滑破碎运动可分为无粘碎屑崩滑运动、粘性碎屑崩滑运动;根据运动过程不同形态,将崩滑破碎运动分为崩滑破碎、粗颗粒与泥浆混合运动、泥石流3个阶段。概述崩滑土体坡面运动过程调查实验研究现状;分析块体滑动摩擦理论、流体理论、散粒体理论在崩滑土体坡面运动过程应用情况,指出块体滑动摩擦理论、流体理论在描述崩滑破碎运动过程的不足;分析崩滑破碎后,间隙介质对粗颗粒运动的影响,指出目前散粒体理论描述崩滑土体坡面运动过程的不足,提出通过设定颗粒间的细观力学参数来再现崩滑土体复杂破碎运动过程的思路和重点研究的内容,为下一步研究提供依据。

Research Status and Prospect on Moving Process of Landslip-collapse Soil along Slope

There are three forms of landslip-collapse soil motion along slope,which include sliding of Rigid block,landslip-collapse mud flow,landslip-collapse soil broken.According to the difference of medium among coarse particles,motion of broken-landslip-collapse soil can be divided into un-adhesiveness broken-landslip-collapse motion and adhesiveness broken-landslip-collapse motion;according to the difference form during motion progress of broken-landslip-collapse soil,it can be divided into three stages:landslip-collapse soil broken,motion of mixture of coarse particles with mud and motion of debris flow.Summarizing the currently situation of motion process of landslip-collapse soil along slope,analysis the application situation of the theory of block sliding friction,fluid theory,particulate theory,point out their shortages applied to analysis the motion progress of landslip-collapse soil broken particles.Analysis influence of interval medium to coarse particles’ movement,indicate the shortage of application particulate theory to represent the movement process of landslip-collapse soil after broken.Put forward method to reproduction the complication movement process of landslip-collapse soil along slope,through setting micromechanics parameter among particles,and point out key point of it,provide support for the next step research.