基于滑体自重效应的滑带土强度参数取值方法

doi:10.13722/j.cnki.jrme.2021.0314

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Abstract Accurately determining the strength parameters of the sliding zone soil is of great value to the stability evaluation and the landslide treatment of a slope. In this paper，the Gelongbu landslide in the upper reaches of the Yellow River is taken as an example to evaluate the accurate strength parameters. The measures include the field survey，physical parameter test，consolidation test，shear test，numerical calculation and correlation analysis. The shear strength values of the sliding zone soils at different positions were obtained from the relationships between the normal pressure(p) and the void ratio(e)，between the void ratio(e) and the water content(w)，and between the water content(w) and the shear strength parameters(c， f ). The average values，overall values and standard values of the shear strengths were calculated，respectively. The results show that there are good correlations between P and e as well as w and(c，f )，and the correlation coefficients are larger than 0.9. In the sight of engineering safety，the recommended values of the shear strength parameters for engineering design and construction were obtained. The present method for determining the shear strength parameters of the sliding zone soil of a slope can reflect the in-suit environment effect and can avoid the dispersion of the shear strength parameters obtained by the traditional shear test.

Key words： soil mechanics landslide sliding-zone soil parameter of shear strength valuation method

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	Articles by authors
	ZHOU Hongfu1
	ZHANG Zhuoting2
	WEI Yuting3

Cite this article:

ZHOU Hongfu1,ZHANG Zhuoting2,WEI Yuting3. Method for determining shear strength parameters of sliding-zone soils considering weight effect of landslides[J]. , 2022, 41(5): 1045-1053.

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https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2021.0314 OR https://rockmech.whrsm.ac.cn/EN/Y2022/V41/I5/1045

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