土工基础

土工基础 ›› 2021, Vol. 35 ›› Issue (4): 472-475.

• 专题论述 • 上一篇    下一篇

强降雨作用下沿河路堤滑坡失稳机理研究

曹金春，孟令峰，张本科   

  1. （光阳工程技术有限公司，济南 271199）
  • 收稿日期:2020-05-07 修回日期:2020-05-20 出版日期:2021-08-31 发布日期:2021-08-19
  • 作者简介:曹金春（1977-），男，高级工程师，研究方向为岩土工程。

Landslide Along River Levee under Heavy Precipitations

CAO Jinchun, MENG Lingfeng, ZHANG Benke   

  1. (Guangyang Engineering and Technology Co. Ltd., Jinan 271199)
  • Received:2020-05-07 Revised:2020-05-20 Online:2021-08-31 Published:2021-08-19

摘要： 以某滨河路沿河路堤工程为例，采用现场地质调查分析及有限元数值模拟方法,对因强降雨致使洪水位变化下沿河路堤滑坡失稳机理进行了研究，结果表明该滑坡失稳模式属于圆弧滑动，降雨、河流侵蚀及洪水快速降落是导致失稳的主要原因；洪水位下降速度较快时对边坡稳定不利，为洪水区路堤滑坡机理的研究提供了理论参考。所得结论对于诸多沿河路堤滑坡失稳机理具有重要的参考和借鉴价值。

关键词: 滑坡, 失稳机理, 洪水位, 有限元, 稳定性

Abstract: This paper presents the stability analysis of the landslide at a highway on top of the river levee. The effect heavy precipitation and the river water level fluctuations on the stability of the highway embankment are investigated through the numerically analysis and through the geological survey. The results indicate that the failure mode of the landslide belongs to the circular failure mode. The precipitation, flood erosion on the river bank and the rapid drawdown of the flood level are factors that might contribute to the occurrence of the landslide. Among these potential factors, the rapid drawdown of the flood level has the most influence on the embankment stability. This study could provide some references of stability of levees along the frequently flooded area.

Key words: Landslide, Instability Mechanism, Flood Level, Finite Element Method, Stability

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