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Deformation Mechanism Analysis and Stability Evaluation of Hongyan Landslide

Author: LvGuoEr
Tutor: SunHongYue
School: Zhejiang University
Course: Marine structures and the environment
Keywords: Highway landslide Deep displacement monitoring Stability evaluation Limit equilibrium Numerical Simulation
CLC: P642.22
Type: Master's thesis
Year: 2011
Downloads: 75
Quote: 0
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Abstract


Highway landslide is a complex engineering geological problems , an extremely important economic and social significance of their research for such mountainous and economically developed provinces like Zhejiang . In this paper, Hongyan landslide in Zhejiang province on a highway study , the use of the survey analysis , monitoring , testing and simulation to study the impact of this landslide factors , deformation and failure mechanism of landslide stability condition , the main conclusions are as follows : ( 1 ) investigation and analysis to determine the natural slope , joints and fractures and potentially slippery with mud content , poor mechanical properties , low shear strength , the water is easy to soften the internal factors of landslide ; heavy rainfall and prolonged rainfall and the foot of the slope of the excavation landslide external factors . (2) be able to get through the deep displacement monitoring Hongyan landslide sliding band characteristics . Slide with following the Ministry of weathered bedrock surface marked surface , the lower part of the sliding body mainly pebbly loam with weathered crystal tuff direct contact , including gravel sub clay loose , strong permeability , gravel soil viscous easy to soften the soil with water , whereas the lower weathered bedrock engineering properties , poor permeability , the groundwater mainly along the bedrock under flow - oriented , sliding with a softening in the groundwater under the sliding body along the weathered bedrock level of decline . Slide with the depth to the big mileage direction gradually increased , and in longitudinal section showing the landslide top and bottom of the slide with shallower central deep . (3) a comprehensive analysis of the stability of the state through deep displacement dynamic monitoring method , the three methods of limit equilibrium analysis and numerical simulation , finite element method derived come landslide reinforcement measures are effective , the landslide stability in a gradual increase and adverse impact on highway safety operations in the weakened into a relatively stable state .

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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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