Numerical investigation on the effect of variation of water level on the stability of soil-cement column reinforced waterway side slope

Numerical investigation on the effect of variation of water level on the stability of soil-cement column reinforced waterway side slope

Li’e Yan Nianping Yi  Xingui Zhang  Shengcai Xu 

College of Civil and Architectural Engineering, Guangxi University, Nanning, China

Key Laboratory of Engineering Disaster Prevention and Structural Safety of Chinese Ministry of Education, Nanning, China

Key Laboratory of Disaster Prevention and Mitigation and Engineering Safety of Guangxi, Nanning, China

He Zhou University, He Zhou, China

Corresponding Author Email: 
ynp0771@163.com
Page: 
344-352
|
DOI: 
https://doi.org/10.18280/ijht.360146
Received: 
17 September 2017
| |
Accepted: 
21 November 2017
| | Citation

OPEN ACCESS

Abstract: 

The variation of water level caused by the impoundment of approach channel for navigation and reservoirs flood relief, will lead to a changing of the water level outside the bank slope and the pore water pressure field inside the slope which handicapped the stability of bank slope. In this paper, ABAQUS finite element software considering the stress-seepage coupling was employed to figure out the influence of variation of water level on the stability of cement shear wall reinforced approach channel side slope, in combination with the strength reduction technique. As a result, the key factors affecting the stability of the reinforced side slope include the velocity of change of channel water level, height of the channel water level, the time effect of pore water pressure inside slope and the permeability coefficient of cement-soil reinforced area. In a practical engineering, it is crucial to check the most dangerous working condition, and measures to optimize the cement-soil reinforced slope structure were proposed which can provide a reference for engineering practices.

Keywords: 

unsaturated soil, seepage, stability analysis of side slope, strength reduction finite element method

1. Introduction
2. Theory of Saturated-Unsaturated Soil Seepage Consolidation
3. Finite Element Strength Reduction Technique Under the Influence of Stress-Seepage Coupling
4. Numerical Calculation Model and Relative Parameters
5. Analysis of Calculating Results
6. Conclusions
Acknowledgement
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