A study on the rainfall infiltration of granite residual soil slope 
with an improved Green-Ampt model

PAN Yong-liang; JIAN Wen-xing; LI Lin-jun; LIN Yu-qiu; TIAN Peng-fei

doi:10.16285/j.rsm.2019.1734

English Version Journal Login

您当前的位置：

首页 >

文章列表页 >

A study on the rainfall infiltration of granite residual soil slope with an improved Green-Ampt model

更新时间：2026-06-25

- A study on the rainfall infiltration of granite residual soil slope with an improved Green-Ampt model
- Vol. 41, Issue 8, Pages: 2685-2692(2020)
- 作者机构：
  
  中国地质大学（武汉）工程学院,湖北,武汉,430074
- 作者简介：
- 基金信息：
- DOI：10.16285/j.rsm.2019.1734
  CLC： TU433
- Online First：18 October 2020，
  
  Published：2020
- 稿件说明：
移动端阅览
PAN Yong-liang, JIAN Wen-xing, LI Lin-jun, et al. A study on the rainfall infiltration of granite residual soil slope with an improved Green-Ampt model[J]. 2020, 41(8): 2685-2692.
DOI：

PAN Yong-liang, JIAN Wen-xing, LI Lin-jun, et al. A study on the rainfall infiltration of granite residual soil slope with an improved Green-Ampt model[J]. 2020, 41(8): 2685-2692. DOI： 10.16285/j.rsm.2019.1734.

摘要

花岗岩残积土广泛分布于我国南方地区，具有许多不良物理力学性质。该类型土边坡在降雨作用下极易发生变形破坏，因此，对花岗岩残积土边坡的降雨入渗规律进行深入研究具有重要意义。在Green-Ampt模型的基础上综合考虑了坡体的初始含水率、地下水位、非饱和特性，建立了一种适用于不同降雨工况的入渗模型，并采用数值模拟及前人经典模型计算结果对该模型进行了验证。运用该模型对赣南3种典型降雨工况下的花岗岩残积土边坡进行了分析，结果表明：在距离地下水位线较远时初始含水率对湿润锋的迁移速率影响不大，但在接近地下水位线附近时湿润锋的迁移速率逐渐增大，呈现出指数形式的变化趋势；相同降雨时间内、不考虑坡面冲刷的情况下，降雨强度略大于土体饱和渗透系数的工况下湿润锋迁移深度最大、边坡稳定性系数降低最多，在实际情况中尤其需要加强防范。

Abstract

Granite residual soil is widely distributed in southern China

and it has many poor physical and mechanical properties. Slopes of this type of soil are prone to deformation and failure under the action of rainfall. Therefore

it is of great significance to study the rainfall infiltration mechanism in granite residual soil slopes. On the basis of Green-Ampt model

the initial moisture content

underground water level and unsaturated characteristics of the soil are comprehensively considered. An infiltration model suitable for different rainfall conditions is established

and verified by comparison between numerical simulations and other models. Then

the proposed model is used to analyze granite residual soil slopes under three typical rainfall conditions. The results show that the initial water content has little effect on the migration rate of the wetting front when it is far from groundwater level

whereas the migration rate increases gradually when the wetting front is near groundwater level

presenting an exponential trend. In the same rainfall time

under the condition that the rainfall intensity is slightly greater than the saturated permeability coefficient of soil

the wetting front migration depth is the largest and the slope stability factor decreases the most.

关键词

Keywords

references

Views

443

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Response of vegetated slope stability under wind-driven rain conditions

Study of analytic and numerical methods for capillary action of unsaturated soil subgrade

Three-dimensional stability analysis of a soil slope based on alternating variable local gradient method

Critical slip field of slope in process of rainfall infiltration

Reliability analysis of slope using non-intrusive stochastic finite element method

Related Author

LIN Bin-qiang

ZHANG De-sheng

JIAN Wen-bin

DOU Hong-qiang

WANG Hao

FAN Xiu-feng

LIU Jie

YAO Hai-lin

Related Institution

Department of Geotechnical and Geological Engineering, Zijin School of Geology and Mining, Fuzhou University

Engineering Research Center of Geological Engineering, Fuzhou University

State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Science

College of Earth Sciences and Engineering, Hohai University

State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University

AI问答

⁰