土体降雨滑坡中细颗粒运移及效应
陈晓清; 崔鹏
刊名地下空间与工程学报
2005
卷号1期号:7页码:1014-1016
关键词降雨 滑坡 泥石流 细颗粒
其他题名The Movement of Fine Grains and Its Effects on the Landslide and Debris Flow Caused by Raining
通讯作者矫滨田
合作状况国内
中文摘要针对土体中细颗粒迁移对滑坡泥石流启动的影响开展了实验,比较了不同纵横剖面的颗粒级配在不同位置及实验前后的结果。研究发现,沿土体深度方向均是细颗粒下移,中部聚集程度最高;沿坡面方向,在离土面相同距离的位置,后部细颗粒多,前部细颗粒少。可以初步认为,随着降雨入渗,细颗粒逐渐汇集到土体下部和土坡坡角,从而使相应位置的渗透性降低,孔压上升,孔隙水聚集于该处,形成滑动面,最后导致滑坡泥石流。
英文摘要Experiments are carried out to study the movement of fine grains in soil and its effect on the landslide and debris flow.The grain series at different sections before and after experiments are compared.It is shown that the fine grains move downwards in the direction vertical to the slope surface and mostly are assembled in the middle.The fine grains are more at the tail than at the foreside at the same parallel to the slope surface. It may be thought that the fine grains are assembled at the lower part and foreside of the slope due to the raining and penetration of water,which causes decrease of the permeability at these places.Therefore,the pore pressure increases and pore water are blocked at these places,loading to formation of the sliding face and the landslide or debris flow occurs.
分类号P642.22
语种中文
公开日期2011-05-20
内容类型期刊论文
源URL[http://ir.imde.ac.cn/handle/131551/3155]  
专题成都山地灾害与环境研究所_成都山地所知识仓储(2009年以前)
成都山地灾害与环境研究所_山地灾害与地表过程重点实验室
推荐引用方式
GB/T 7714
陈晓清,崔鹏. 土体降雨滑坡中细颗粒运移及效应[J]. 地下空间与工程学报,2005,1(7):1014-1016.
APA 陈晓清,&崔鹏.(2005).土体降雨滑坡中细颗粒运移及效应.地下空间与工程学报,1(7),1014-1016.
MLA 陈晓清,et al."土体降雨滑坡中细颗粒运移及效应".地下空间与工程学报 1.7(2005):1014-1016.
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