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Application of Monitoring Pre-stressed Cable on Landslide Stability Assessment

Author: HuangJinZhen
Tutor: SunHongYue
School: Zhejiang University
Course: Port, Coastal and Offshore Engineering
Keywords: landslide cable prestress field monitoring stability evaluation limit equilibrium numerical simulation landslide
CLC: P642.22
Type: Master's thesis
Year: 2011
Downloads: 65
Quote: 0
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Abstract


With the further economic growth, the construction of highway, railway and hydroelectric in our country is undergoing rapid growth. There are many artificial slopes, and many slope remediation problems appear. The prestressed anchored cable can effectively improve the adverse stress of geotechnical engineering, geotechnical body’s own strength and stability, effectively accelerate construction period and boost the stability of the slope, which nowadays has a wide application in many fields. The effective prestress which is an important factors can influence the strengthening of project so the prestress change rule has been the focus of domestic and international engineering. The use of survey, monitoring and simulation is going to study the prestress change rule, deformation mechanism and stability of Dachen landslide. The main conclusions of this paper are as follows:In the first place through long term deformation monitoring of the Dachen landslide, the anchor prestrss and the displacement information are researched. Based on the monitoring axial force of the pre-stressed cable on the highway landslide, the prestress change rule in cable is studied. In combination with the monitoring results of displacements which are observed on slope surface, it is obtained that after reinforced, the displacement of slope can be reduced and will be stable.In the next place, briefly introduces the limit equilibrium method, Morgan Stan -Price method, calculate a safety factor through GEO-SLOPE software and find that, after reinforcement through anchor, landslide stability is stable.In the end based on the elasto-plastic shear strength reduction finite difference method, slope stability in different stages is evaluated by global safety factor. Slope stability analysis is performed by limit equilibrium methods and difference modeling, and results of the two methods are analyzed. It can infer that reinforced measures of the landslide are effective so that the stability is gradually increasing and the stability is going into a relatively stable condition.

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CLC: > Astronomy,Earth Sciences > Geology > Hydrogeology and Engineering Geology > Engineering Geology > The geological and engineering geological > Landslide
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