Research on calculation model for stability evaluation of rainfall-induced shallow landslides

LI Ning; XU Jian-cong; QIN Ya-zhou

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Research on calculation model for stability evaluation of rainfall-induced shallow landslides

更新时间：2026-06-25

- Research on calculation model for stability evaluation of rainfall-induced shallow landslides
- Vol. 33, Issue 5, (2012)
- 作者机构：
  
  1. 同济大学岩土及地下工程教育部重点实验室,上海,200092
  2. 同济大学地下建筑与工程系,上海,200092
- 作者简介：
- 基金信息：
- DOI：
  CLC： TU434
- Online First：14 May 2012，
  
  Published：2012
- 稿件说明：
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LI Ning, XU Jian-cong, QIN Ya-zhou. Research on calculation model for stability evaluation of rainfall-induced shallow landslides[J]. 2012, 33(5).
DOI：

LI Ning, XU Jian-cong, QIN Ya-zhou. Research on calculation model for stability evaluation of rainfall-induced shallow landslides[J]. 2012, 33(5). DOI：

摘要

我国是一个滑坡灾害频发的国家，众多事实表明：降雨是影响边坡稳定性，导致边坡失稳的最主要和最普遍的环境因素，是浅层滑坡的触发因素。为了更好地对降雨诱发浅层滑坡进行研究，采用非饱和土VG模型与改进的Green-Ampt入渗模型对Mein-Larson降雨入渗模型进行改进，并结合无限边坡提出了一个降雨诱发浅层滑坡的简化计算模型。与以往提出的简化计算模型相比，该模型既考虑了坡面倾斜的影响，又考虑了非饱和土的特性，并可用于两种降雨形式下的边坡浅层稳定性估算，具有更广的应用范围。通过与有限元得到的结果进行比较可得：在不同降雨条件下，该计算模型得到的各项结果与数值解是接近的，安全系数计算结果是偏于安全的，因此，可将该计算模型用于降雨诱发浅层滑坡的近似估算；该计算模型公式简单，便于计算，计算效率较高。

Abstract

Landslides are common geological hazard problems in China; many facts indicate that the rainfall is the main and common environmental factor controlling the instability of slope and triggering shallow landslides. In order to do better research on rainfall-induced shallow landslides

Mein-Larson model is developed based on VG model and modified Green-Ampt infiltration model; then combined with infinite slope stability model

a simplified calculation model is proposed for analyzing rainfall-induced shallow landslides. Compared with the simplified calculation model proposed before

the effect of slope and the characteristics of unsaturated soil are taken into account in this model; it can be used for analyzing rainfall-induced shallow landslides under two different rainfall patterns; and it has a wider range of applications. Compared with the results of FEM

conclusions can be drawn as follows: the results of the calculation model agree with that of FEM; and the safety factor is somewhat safe; so it can be used for analyzing rainfall-induced shallow landslides; the calculation model has simple formula

higher computational efficiency.

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