复杂水库调度及降雨条件下堆积体滑坡离心试验研究

doi:10.13722/j.cnki.jrme.2022.1223

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Abstract Complex reservoir scheduling refers to the operating conditions in which the water level of the reservoir undergoes multiple rises and falls at varying rates. To study the triggering factors，evolution laws and instability mechanisms of the slope failure of the embankment on a typical accumulation body in the HD reservoir area，a centrifuge experimental system was developed to simulate the coupling effects of reservoir scheduling and rainfall. The experimental design involved a water level rise，slow water level fall，rainfall，and fast water level fall scenario. The entire experimental process was analyzed to investigate the deformation and failure mechanisms of the accumulation body slope under complex reservoir scheduling and rainfall conditions. The findings demonstrate that the slope deformation，which mostly manifests as local collapse at the slope's leading edge during the reservoir filling stage，is difficult to detect. When the reservoir water level drops sharply，the slope undergoes a staged sliding in the middle and lower parts which causes tearing cracks at the rear edge. Rainfall leads to surface erosion and overall subsidence of the slope，which exhibits traction failure symptoms. Although the rate of the second water level dip is twice that of the first，the slope deformation is mainly characterized by local traction sinking at the front edge.

Key words： slope engineering water level rainfall accumulation slope centrifugal test failure mechanism

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	Articles by authors
	ZHANG Qiang1
	2
	ZHENG Yanni1
	JIA Chaojun1
	CHEN Hongjie3
	CHENG Wei4

Cite this article:

ZHANG Qiang1,2,ZHENG Yanni1, et al. Centrifugal experimental study on accumulation body landslides under complex reservoir operation and rainfall conditions[J]. , 2023, 42(10): 2427-2440.

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https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2022.1223 OR https://rockmech.whrsm.ac.cn/EN/Y2023/V42/I10/2427

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