四川省汉源县中海村滑坡动力学特征数值分析

doi:10.19388/j.zgdzdc.2022.04.12

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Abstract The disaster-causing factors and the instability mechanism of the landslide are clarified through the on-site investigation of the landslide disaster in Zhonghaicun area in this paper. And the dynamic parameter inversion analysis of the landslide is carried out based on the numerical model of the continuum mechanics theory. The results show that the continuous rainfall and the special lithological characteristics of the Quaternary Sigda semi-diagenetic rocks are the key factors for the occurrence of Zhonghaicun landslides. The landslide movement lasts about 70 s, and the pore water pressure coefficient of the landslide is 0.8, with maximum accumulation thickness of 8 meters and maximum movement velocity of 16.2 m/s. In the entire process of landslide movement form and velocity evolution, the main accumulation areas are the 1st-level platform and the 3rd-level platform. The movement speed has three peaks, and the stepped terrain is the main reason for the staged speed peaks.

Key words： landslide disaster-causing factors Sigda semi-diagenetic rocks numerical model dynamic characteristics

Received: 17 May 2022

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P642.22

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	Articles by authors
	XU Yizi
	FAN Xiaoyi
	ZHANG Youyi
	TIAN Shujun
	WEN Xiang
	LIU Haonan
	ZHENG Yufeng
	LIAO Hongyang

Cite this article:

XU Yizi,FAN Xiaoyi,ZHANG Youyi, et al. Numerical analysis on dynamic characteristics of Zhonghai Village landslide in Hanyuan County of Sichuan Province[J]. , 2022, 9(4): 102-111.

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http://journal25.magtechjournal.com/Jwk_dzdc/EN/10.19388/j.zgdzdc.2022.04.12 OR http://journal25.magtechjournal.com/Jwk_dzdc/EN/Y2022/V9/I4/102

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