岩土工程学报Issue(12)：2167-2174,8.DOI:10.11779/CJGE201512005
不同颗粒组分下泥石流离心机模型试验研究
Centrifugal model tests on debris flow with different particle compositions
摘要
Abstract
Using the self-developed visualization test apparatus with constant slope and rainfall intensity, centrifuge model tests on rainfall-induced debris flow are carried out in order to study the formation mechanism of debris flow under different particle compositions. The test conditions include 20 times of gravity, five soil samples and different fine particle contents. Through the analysis of macroscopic displacement fields, moisture migration and pore water pressures under different particle compositions, different morphological characteristics of debris flow are observed and discussed. The test results indicate that the failure pattern of debris flow changes from retrograded sliding to whole flow sliding with the increasing content of fine particles from 10% to 70%. And the difference of permeability coefficient under different particle compositions is the major cause for different failure patterns of debris flow.关键词
降雨诱发泥石流/离心机模型试验/颗粒组分/渗透系数Key words
rainfall-induced debris flow/centrifugal model test/particle composition/permeability coefficient分类
建筑与水利引用本文复制引用
周健,杨浪,王连欣,张娇..不同颗粒组分下泥石流离心机模型试验研究[J].岩土工程学报,2015,(12):2167-2174,8.基金项目
国家自然科学基金项目 （）
