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Study on Progressive Failure Mechanism of High and Steep Overburden Slope Under Rainfall
This paper summarizes the typical landslide characteristics and main triggering factors by statistically analyzing the detailed investigation data of 51 landslides in Hebei Province, among which rainfall-induced cover-type landslides are the most typical form of landslides. In order to study the destabilizing and destructive mechanism of high steep cover type slope under the action of rainfall infiltration, taking a cover type slope as an example, based on the theory of unsaturated seepage and shear strength, the changing rules of seepage field, displacement field, plasticity zone, and sliding cracking surface of the cover type slope under the condition of intermittent rainfall were analyzed by using the slip surface stress method, and the safety coefficient of the slope under the action of rainfall was calculated. The results show that: after the rainfall starts, because the shallow soil layer of the slope is mainly coarse gravel soil and gravel soil, with relatively strong permeability, the rainwater on the slope surface infiltrates into the interior of the slope body and softens the soil body along the soil-rock interface, and the soil body of the slope body produces displacement at the leading and trailing edges, and shallow sliding is formed in the slope; with the continuation of the rainfall, the slope produces a through plastic zone, and the soil body of the leading edge pulls the central pile body to produce traction slip, and the trailing edge of the soil body produces traction slip, and the trailing edge of the soil body produces traction slip. As the rainfall continues, the slope produces through plastic zone, the leading edge soil body pulls the central pile body to produce traction slip, the trailing edge soil body pushes the central pile body to produce nudging slip, and the deformation gradually develops from the surface to the depth, from the leading edge to the trailing edge.
Study on Progressive Failure Mechanism of High and Steep Overburden Slope Under Rainfall
This paper summarizes the typical landslide characteristics and main triggering factors by statistically analyzing the detailed investigation data of 51 landslides in Hebei Province, among which rainfall-induced cover-type landslides are the most typical form of landslides. In order to study the destabilizing and destructive mechanism of high steep cover type slope under the action of rainfall infiltration, taking a cover type slope as an example, based on the theory of unsaturated seepage and shear strength, the changing rules of seepage field, displacement field, plasticity zone, and sliding cracking surface of the cover type slope under the condition of intermittent rainfall were analyzed by using the slip surface stress method, and the safety coefficient of the slope under the action of rainfall was calculated. The results show that: after the rainfall starts, because the shallow soil layer of the slope is mainly coarse gravel soil and gravel soil, with relatively strong permeability, the rainwater on the slope surface infiltrates into the interior of the slope body and softens the soil body along the soil-rock interface, and the soil body of the slope body produces displacement at the leading and trailing edges, and shallow sliding is formed in the slope; with the continuation of the rainfall, the slope produces a through plastic zone, and the soil body of the leading edge pulls the central pile body to produce traction slip, and the trailing edge of the soil body produces traction slip, and the trailing edge of the soil body produces traction slip. As the rainfall continues, the slope produces through plastic zone, the leading edge soil body pulls the central pile body to produce traction slip, the trailing edge soil body pushes the central pile body to produce nudging slip, and the deformation gradually develops from the surface to the depth, from the leading edge to the trailing edge.
Study on Progressive Failure Mechanism of High and Steep Overburden Slope Under Rainfall
Lecture Notes in Civil Engineering
Wang, Weiqiang (editor) / Wang, Chengzhi (editor) / Lu, Yang (editor) / Zhai, Xing (author) / Li, Chenxi (author) / Liu, Yu (author) / Li, Hui (author)
2024-11-08
15 pages
Article/Chapter (Book)
Electronic Resource
English
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