基于非均质流变特性的滑坡时效演化及预警研究

doi:10.13722/j.cnki.jrme.2021.1118

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Abstract In view of the heterogeneous of rock and soil during the gestation and evolution of landslides，the strength test，bottom friction model test and scanning electron microscope test of similar materials of landslides were carried out，and the mechanical mechanism of landslide evolution and its heterogeneity characteristics were deeply studied from macro and micro perspectives. In addition，the strain softening model and Burgers model are connected in series to form a constitutive model considering the heterogeneous rheological characteristics，which is applied to the numerical example analysis and early warning study of landslide time evolution. The results show that there are time and spatial heterogeneity. In terms of time，the faster the degradation rate of rock and soil parameters of the landslide，the shorter the time from creep deformation to the final instability failure. There is heterogeneity in the mechanism and microstructure. The constitutive model considering the heterogeneous rheological characteristics can better reflect the three-stage evolution characteristics of landslide deformation. The accuracy of the heterogeneous rheological model is verified through the combination of actual engineering and numerical analysis，which is the analysis of landslide instability and failure，and early warning to provide useful reference.

Key words： slope engineering heterogeneous rheological characteristics creep model accelerating creep early warning of landslides

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	Articles by authors
	CHEN Guoqing1
	TANG Huiming2
	HU Kaiyun1
	LI Changdong2

Cite this article:

CHEN Guoqing1,TANG Huiming2,HU Kaiyun1, et al. Evolution characteristics and early warning of landslides based on heterogeneous rheological properties[J]. , 2022, 41(9): 1795-1809.

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https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2021.1118 OR https://rockmech.whrsm.ac.cn/EN/Y2022/V41/I9/1795

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