[1]陈俊成,宿文姬.Mein-Larson入渗模型的改进研究[J].华南地震,2021,41(02):125-133.[doi:10.13512/j.hndz.2021.02.18 ]
 CHEN Juncheng,SU Wenji.Research on the Improvement of Mein-Larson Infiltration Model[J].,2021,41(02):125-133.[doi:10.13512/j.hndz.2021.02.18 ]
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Mein-Larson入渗模型的改进研究()
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华南地震[ISSN:1006-6977/CN:61-1281/TN]

卷:
41
期数:
2021年02期
页码:
125-133
栏目:
土木工程防震减灾
出版日期:
2021-06-20

文章信息/Info

Title:
Research on the Improvement of Mein-Larson Infiltration Model
文章编号:
1001-8662(2021)02-0125-09
作者:
陈俊成12宿文姬2
(1. 广西交科集团有限公司,南宁 530007;2. 华南理工大学土木与交通学院,广州 510640)
Author(s):
CHEN Juncheng12SU Wenji2
(1. Guangxi Traffic Technology Group Co., Ltd,Nanning 530007,China;2. South China University of Technology,Department of Civil Engineering,Guangzhou 510640,China)
关键词:
降雨型滑坡降雨入渗模型土体初始含水率数值模拟
Keywords:
Rainfall landslideRainfall infiltration modelSoil initial moisture contentNumerical simulation
分类号:
P642.22
DOI:
10.13512/j.hndz.2021.02.18
文献标志码:
A
摘要:
降雨入渗模型对于降雨型滑坡稳定性的评价是相当重要的,目前常用的降雨入渗模型是Mein-Larson入渗模型,但该模型假定了土体初始含水率沿深度方向为一定值,而实际上土体初始含水率沿深度方向为非线性分布的。考虑到实际的土体初始含水率分布情况,提出了描述土体初始含水率的分布的反比例函数,对Mein-Larson入渗模型进行了改进,并通过有限元数值模拟方法对改进模型进行了验证。结果表明:当降雨入渗在小于2.5 m时,改进模型理论解和数值解存在一定的误差,当降雨入渗在2.5~5 m时,改进模型理论解和数值解基本一致;改进的降雨入渗模型计算结果较Mein-Larson入渗模型更接近数值模拟结果,改进的降雨入渗模型更加完善和可靠,可推广应用到工程实际中。
Abstract:
The rainfall infiltration model is very important for the evaluation of the stability of rainfall-type landslides. At present,the commonly used rainfall infiltration model is the Mein-Larson infiltration model,but the model assumes that the initial water content of soil is a certain value along the depth direction,in fact,the initial moisture content of soil is non-linear along the depth direction. Considering the actual distribution of soil initial moisture content,an inverse proportion function is proposed to describe the distribution of soil initial moisture content,which improves the Mein-Larson infiltration model,and the improved model is verified by finite element numerical simulation. The results show that there is a certain error between the theoretical solution and the numerical solution of the improved model when the rainfall infiltration is less than 2.5 m, and when the rainfall infiltration is between 2.5 m and 5 m,the theoretical and numerical solutions of the improved model are basically consistent. The results of the improved rainfall infiltration model are closer to the numerical simulation results than those of the Mein-Larson model. The improved rainfall infiltration model is more perfect and reliable, and can be applied to engineering practice.

参考文献/References:

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相似文献/References:

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 GUO Zhifeng,SU Wenji,ZHANG Wei,et al.Study on Rainfall Infiltration of Granite Residual Soil Slope Based on Improved Mein Larson Model[J].,2022,(02):116.[doi:10.13512/j.hndz.2022.02.16]

备注/Memo

备注/Memo:
收稿日期:2021-02-10
基金项目:广东省自然资源厅科技项目(GDZRZYKJ2020002)
作者简介:陈俊成 (1995- ),男,硕士,主要从事桥梁检测相关工作。E-mail:juncheng0328@163.com 通信作者:宿文姬(1969- ),女,博士,副教授,主要从事地质灾害防灾减灾研究。E-mail:wjsu@scut.edu.cn
更新日期/Last Update: 2021-06-20