中南大学学报（自然科学版）2018，Vol.49Issue(2)：464-471,8.DOI:10.11817/j.issn.1672-7207.2018.02.027
降雨条件下成层土质边坡的渗流特征
Seepage characteristics of layered soil slope under rainfall conditions
摘要
Abstract
Based on the extensive distribution of colluvial soil–strong weathered rock slope in the southeast coastal area, and with the saturated unsaturated seepage theory and the finite element seepage calculation of 1-D and 2-D model, the impact of the thickness of residual soil on the distribution of moisture content and pore water pressure under different rainfall conditions were obtained, and the influence of slope thickness and slope ratio on the rainfall infiltration depth of different sections of the 2-D slope model was studied. The results show that the depth of rainfall infiltration is proportional to the thickness of the soil layer of the slope, and the influence degree of slope soil thickness on water content is related to the intensity of rainfall. The relationship between the rainfall intensity and the saturated permeability coefficient of the soil slope determines the distribution characteristics of the pore water pressure; thicker soil layer causes the greater depth of rainfall infiltration in each section of the slope, and the bigger slope ratio leads to the bigger rainfall infiltration depth of the bottom section. The upper section of the slope and the middle section of the slope are less affected by the slope ratio. The soil structure of slope has significant influence on the distribution of water content under rainfall.关键词
边坡工程/渗流特征/有限元分析/成层土质边坡/降雨入渗Key words
slope engineering/seepage characteristic/finite element analysis/layered soil slope/rainfall infiltration分类
建筑与水利引用本文复制引用
马吉倩,付宏渊,王桂尧,曾铃,史振宁..降雨条件下成层土质边坡的渗流特征[J].中南大学学报（自然科学版）,2018,49(2):464-471,8.基金项目
国家自然科学基金资助项目(51508040,51678074,51578082,51578079) （51508040,51678074,51578082,51578079）
湖南省重点研发计划项目(2016SK2023) （2016SK2023）
湖南省教育厅优秀青年基金资助项目(17B013) (Projects(51508040,51678074,51578082,51578079) supported by the National Natural Science Foundation of China （17B013）
Project(2016SK2023) supported by Key Research and Development Plan of Hunan Province （2016SK2023）
Project(17B013) supported by the Outstanding Youth Foundation of Education Department of Hunan Province) （17B013）
