Experimental investigation on the deformation and failure mechanism of slope with interbedding soft and hard rocks under rainfall infiltration
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Published:2020
Issue:
Volume:194
Page:04056
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ISSN:2267-1242
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Container-title:E3S Web of Conferences
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language:
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Short-container-title:E3S Web Conf.
Author:
Song Yafen,Chen Li,Zhang Xiaotao,Zhao Qian,Yu Linlin,Xu Jinhua
Abstract
Taking Peng Jiawan slope in Yiba expressway as the project background, the deformation and failure mechanism of slope with interbedding of soft and hard rocks was studied on the basis of geological analysis and similarity theory. In geomechanical model test, the water infiltration softening process is used to simulate the rainfall infiltration. The result indications showed as follows: under the condition, the deformation mode of the slope is the previous sliding-tension and upper overall creep-slip, and the failure mode is overall slip failure in the sliding zone of deep soft rock. Strictly speaking, the deformation of hard rock differs from the deformation of soft rock, hard rock deforms mainly on sliding-tension and soft rock deforms mainly on overall creep-slippage. Changes of the condition of deep soft rock affect the total stability of the interbedded slope mostly.
Reference11 articles.
1. Song Y., Failure models and instability of slopes with soft and hard rock interbedded laminated structure in southwest China. Chengdu University of Technology, (2011)
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