Physical experiment and numerical model analysis of surge caused by collapse of columnar dangerous rock mass

ZHAO Hailin; HUANG Bolin; ZHANG Quan; ZHENG Jiahao; FENG Wanli; CHEN Xiaoting

doi:10.12090/j.issn.1006-6616.2020.26.04.043

Volume 26 Issue 4

Aug. 2020

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Article Navigation > Journal of Geomechanics > 2020 > 26(4): 500-509

Zhang Jinjiang, Zheng Yadong, 1995. KINEMATIC VORTICITY, POLAR MOHR CIRCLE AND THIER APPLICATION IN QUANTITATIVE ANALYSIS OF GENERAL SHEAR ZONES. Journal of Geomechanics, 1 (3): 55-64.

Citation:

ZHAO Hailin, HUANG Bolin, ZHANG Quan, et al., 2020. Physical experiment and numerical model analysis of surge caused by collapse of columnar dangerous rock mass. Journal of Geomechanics, 26 (4): 500-509. DOI: 10.12090/j.issn.1006-6616.2020.26.04.043

Zhang Jinjiang, Zheng Yadong, 1995. KINEMATIC VORTICITY, POLAR MOHR CIRCLE AND THIER APPLICATION IN QUANTITATIVE ANALYSIS OF GENERAL SHEAR ZONES. Journal of Geomechanics, 1 (3): 55-64.

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Physical experiment and numerical model analysis of surge caused by collapse of columnar dangerous rock mass

doi: 10.12090/j.issn.1006-6616.2020.26.04.043

ZHAO Hailin^{1, 2
,},
HUANG Bolin^{1, 2
,},
ZHANG Quan^{1, 2},
ZHENG Jiahao^{1, 2},
FENG Wanli^{1, 2},
CHEN Xiaoting^{1, 2}

1.
Hubei Key Laboratory of Disaster Prevention and Reduction, China Three Gorges University, Yichang 443000, Hubei, China
2.
Hubei Yangtze River Three Gorges Landslide National Field Observation Station, China Three Gorges University, Yichang 443000, Hubei, China

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Abstract

Abstract

Columnar dangerous rock mass is a common hidden geological hazard in the Three Gorges reservoir area, and the surge induced by collapse causes great threat and damage to shipping, tourism, production and life, as well as personnel and property in the reservoir area. In this paper, based on the boundary conditions of the formation and movement of the columnar dangerous rock mass in the field, the physical experiment and numerical simulation of surge caused by the collapse of granular columns are carried out. The results show that the numerical model can well simulate the formation process, vector information and interaction with water, and the velocity curve shows the energy transfer quantitatively. The deviation of surge height between the physical test and the numerical simulation is about 3~4 cm; the stacking angle of the numerical simulation stacking area is 5% larger than that of the physical experiment; the moving distance of the leading edge is 7% smaller. It provides an important basis for prediction and early warning of surge disaster caused by the collapse of columnar dangerous rock mass.
- columnar dangerous rock mass,
- physical experiment,
- numerical simulation,
- granular column collapse,
- surge

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References

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Physical experiment and numerical model analysis of surge caused by collapse of columnar dangerous rock mass

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Physical experiment and numerical model analysis of surge caused by collapse of columnar dangerous rock mass

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