冰岩碎屑流冲击力学机制的试验研究

doi:10.13722/j.cnki.jrme.2022.1193

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Abstract The physical mechanism of ice-rock debris flow?s super fluidity and super impact damage remains unclear. In this study，the motion and impact process of ice-rock debris flow with varying ice contents were qualitatively studied through laboratory experimental model tests. The evolution characteristics of flow velocity，flow depth，impact height，and impact force with ice content were analysed. The influence of ice content on the fluidity and impact characteristics of ice-rock debris flow was clarified. The ice content increase leads to a decrease in the internal friction angle of the ice-rock debris flow. Simultaneously，the flow velocity，flow depth，and impact wall height of the ice-rock debris flow increase, enhancing its fluidity. As the ice content increases，the dynamic indicators of the ice-rock debris flow also increase，while the density decreases. This results in a characteristic pattern where the maximum impact force of the ice-rock debris flow initially increases and then decreases with increasing ice content, reaching its peak at 40% ice content. Theoretical analysis suggests that the impact force of the ice-rock debris flow can be calculated by summing the dynamic and static components of the impact force.

Key words： rock mechanics ice-rock debris flow ice content model test impact force

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	Articles by authors
	LIU Yutong1
	JIANG Yuanjun2
	LI Xiulei1
	LIANG Heng2
	NING Po2
	ZHU Yuanjia2

Cite this article:

LIU Yutong1,JIANG Yuanjun2,LI Xiulei1, et al. Experimental study the impact mechanism of ice-rock debris flow[J]. , 2023, 42(S2): 4073-4081.

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http://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2022.1193 OR http://rockmech.whrsm.ac.cn/EN/Y2023/V42/IS2/4073

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