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Stability and Reinforcement Analysis of a High and Steep Cataclastic Rock Slope
This analysis is based on a highway project in Guangdong province, involving a tall, steep, and rock-excavating slope with cataclastic structures. Quantitative analysis of the stress-strain trend, possible failure models and safety factors during the slope excavation were investigated by the discrete element program UDEC. The following results were obtained: (1) The slope with joint fissure developed was in anticlinal core and the stability was greatly influenced by the extroversion of rock level. (2) The primitive balance of the slope was broken during the excavation, which induced large range shear failure zone in the internal part of the slope, and the whole circle-broken similar to soil slope appeared. (3) The excavation slope was in a critically stable state, but wide area landslide could be induced by certain triggering factors. Based on these results, a comprehensive treatment scheme was adopted and implemented through the methods, such as reinforcing the broken rock with concrete lattice beam-anchor (cable); minimizing erosion and preserving the slope strength with an efficient drainage system; and protecting the slope with grouted rubble. The integrity of the high standard highway was maintained and the slope was reinforced during time the plan was carried out.
Stability and Reinforcement Analysis of a High and Steep Cataclastic Rock Slope
This analysis is based on a highway project in Guangdong province, involving a tall, steep, and rock-excavating slope with cataclastic structures. Quantitative analysis of the stress-strain trend, possible failure models and safety factors during the slope excavation were investigated by the discrete element program UDEC. The following results were obtained: (1) The slope with joint fissure developed was in anticlinal core and the stability was greatly influenced by the extroversion of rock level. (2) The primitive balance of the slope was broken during the excavation, which induced large range shear failure zone in the internal part of the slope, and the whole circle-broken similar to soil slope appeared. (3) The excavation slope was in a critically stable state, but wide area landslide could be induced by certain triggering factors. Based on these results, a comprehensive treatment scheme was adopted and implemented through the methods, such as reinforcing the broken rock with concrete lattice beam-anchor (cable); minimizing erosion and preserving the slope strength with an efficient drainage system; and protecting the slope with grouted rubble. The integrity of the high standard highway was maintained and the slope was reinforced during time the plan was carried out.
Stability and Reinforcement Analysis of a High and Steep Cataclastic Rock Slope
Zou, Zuyin (author) / Zhu, Zhanyuan (author) / Tao, Lianjin (author) / Mo, You (author)
Ninth International Conference of Chinese Transportation Professionals (ICCTP) ; 2009 ; Harbin, China
ICCTP 2009 ; 1-7
2009-07-23
Conference paper
Electronic Resource
English
Stability and Reinforcement Analysis of a High and Steep Cataclastic Rock Slope
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