Rock and Soil Mechanics ›› 2021, Vol. 42 ›› Issue (10): 2845-2854.doi: 10.16285/j.rsm.2020.0464

• Geotechnical Engineering • Previous Articles     Next Articles

Prediction and analysis of surge generated by crushing failure collapse of columnar dangerous rock mass

ZHANG Quan1, 2, HUANG Bo-lin1, ZHENG Jia-hao1, ZHAO Hai-lin1, FENG Wan-li1, CHEN Xiao-ting1   

  1. 1. Hubei Key Laboratory of Disaster Prevention and Mitigation, China Three Gorges University, Yichang, Hubei 443002, China; 2. Faculty of Engineering, China University of Geosciences, Wuhan, Hubei 430074, China
  • Received:2020-04-20 Revised:2021-06-20 Online:2021-10-11 Published:2021-10-20
  • Supported by:
    This work was supported by the National Key R&D Program Projects (2018YFC1504803) and the Research Fund for Excellent Dissertation of China Three Gorges University (2020SSPY022).

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Abstract: The columnar dangerous rock mass is well developed in the Three Gorges Reservoir area. The change of water level accelerates the deterioration of the pedestal rock mass of the columnar dangerous rock mass and increases the risk of its crushing failure collapse. The potential surge disaster threatens the safety of shipping. According to the survey data of relevant dangerous rock masses in the Three Gorges Reservoir area, a dynamic observation system and experiment platform for particle column collapse was constructed, and physical model experiments on granular column collapse surge were carried out. The experiment results show that the crushing failure mode of dangerous rock mass is similar to that of the composite movement of collapsing-sliding of the experimental granular column. The staged motion of the granular column can be analyzed by the velocity of gravity center, which can represent the velocity of the particles. Formulas are derived by the nonlinear regression to estimate the water entry velocity of the particle and the maximum amplitude of surge. The Froude number is the main sensitive factor of the formula. Compared with the prediction formula of rigid block subsidence, the experimental formula in this paper is more suitable for crushing failure mode and has higher prediction accuracy. This research will provide the technical support for the prediction of the surge caused by the instability of the columnar dangerous rock mass in the reservoir area.

Key words: Three Gorges Reservoir area, granular column, physical model experiment, prediction analysis, surge wave amplitude, crushing failure

CLC Number: 

  • P 642.2
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[3] SHE Fang-tao , WANG Yong-xin , ZHANG Yu，. Surface longitudinal settlement induced by subway tunneling in loess and its prediction analysis method [J]. , 2015, 36(S1): 287-292.
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[5] WANG Shi-chang，HUANG Bo-lin，LIU Guang-ning，CHEN Xiao-ting. Numerical simulation of tsunami due to slope failure at Gongjiafang on Three Gorges reservoir [J]. , 2015, 36(1): 212-218.
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[8] XIAO Shi-rong , LU Shu-sheng , GUAN Hong-fei , SONG Gui-lin，. Study of geomechanical model of Liangshuijing landslide in Three Gorges Reservoir area [J]. , 2013, 34(12): 3534-3542.
[9] ZHANG Wei ，LIU Quan-sheng. Synthetical deformation analysis of anchor bolt in jointed rock mass [J]. , 2012, 33(4): 1067-1074.
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