Application of Combined Anti-Slide Micro-Piles to Control of a Landslide in Xining-Jiuzhi Highway

Abstract:

It is a new trend to control landslide by using anti-sliding composite structure of micro-piles combined with other engineering measures. It has been applied in many engineer practices for its convenient, less cost, and high landslide stability increased obviously by the pressure grouting. The paper discussed formation lithology, geologic structure and hydrogeology features of Xining-Jiuzhi highway as an example, according to the specific circumstance of sliding zones in superficial layer and deep layer, we proposed a comprehensive landslide treatment, combined with anti-sliding composite structure of micro-piles, anchor cable frame reinforcing and inclined drain holes. On the basis of analyzing the effect and theory of consolidating the slide by anti-sliding composite structure of micro-piles, we adopted the numerical model of lagrange finite-difference analyzing the stability of landslides and the load-carrying properties of the reinforced structure before and afterwards comparatively. The calculated results and monitoring showed that: the landslides were stable, and the comprehensive treatment of using anti-sliding composite structure of micro-piles has met the expectant control effects.

• Periodical: Applied Mechanics and Materials (Volumes 204-208)
• Pages: 1673-1677
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.204-208.1673
• Online since: October 2012
• Authors: Sheng Li Tang, Le Zhou, Zhang Wu, Xiao Long Dang
• Keywords: Grouting Modification, Landslide Control, Numerical Simulation, Ombined Anti-Slide Micro-Pile, Pile-Soil Effect

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