Meteorological Criterion of Highway Slope Failure Induced by Rainfall in Mountainous Areas

YU Dehai; PENG Jianbing

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Meteorological Criterion of Highway Slope Failure Induced by Rainfall in Mountainous Areas

- Meteorological Criterion of Highway Slope Failure Induced by Rainfall in Mountainous Areas
- Bulletin of Soiland Water Conservation Vol. 29, Issue 4, Pages: 125-128(2010)
- 作者机构：
  
  1. 大连海事大学道路与桥梁工程研究所,辽宁,大连,116026
  2. 沈阳建筑大学岩土与道路工程重点实验室,辽宁,沈阳,110168
  3. 长安大学地质工程与测绘学院,陕西,西安,710054
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2010
- 稿件说明：
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YU Dehai, PENG Jianbing. Meteorological Criterion of Highway Slope Failure Induced by Rainfall in Mountainous Areas[J]. Bulletin of Soiland Water Conservation, 2010, 29(4): 125-128.
DOI：

YU Dehai, PENG Jianbing. Meteorological Criterion of Highway Slope Failure Induced by Rainfall in Mountainous Areas[J]. Bulletin of Soiland Water Conservation, 2010, 29(4): 125-128. DOI：

摘要

应用突变理论

针对山区公路边坡的地质特征

以其力学模型为基础

综合考虑作用于后缘张裂隙的水力效应

构建边坡系统的尖点突变模型

推导出边坡极限状态下后缘张裂隙临界充水高度

并据此得到临界降雨强度的计算公式

建立了边坡突变失稳的气象判据。同时以陕南秦岭山区G316国道某滑坡为例

进行算例分析。分析结果表明

模型计算结果与实际情况较为一致

从而为山区公路滑坡预警预报的研究提供一个新的思路。

Abstract

Based on hydrogeologic conditions and geomechanics model of highway slope in mountainous areas

a new catastrophic model on slope stability is established in consideration of the static water pressure of top splay fracture. Equations for calculating the critical water highness in the splay fracture and the critical rainfall intensity are developed by adopting cusp-catastrophic theory. The meteorological criterion of highway slope failure is put forward. At the same time

it is illustrated using the landslide on the No 316 national road in the southern Shaanxi Province. The results calculated by above model agree well with the observed ones

providing a new approach for the prediction of highway landslide.

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