基于能量比例系数的滚石冲击力计算方法研究

doi:10.13722/j.cnki.jrme.2022.0271

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Abstract Rockfall impact force is an important basis for the design of protection engineering. Therefore，based on the principle of energy conservation and the introduction of proportional coefficient of energy，the calculation method of the maximum impact force of rockfall impacting soil considering the impact angle was established. Through physical model tests，the effects of rockfall mass and size，impact velocity and angle，soil density and compressive strength on the proportional coefficient of energy were explored，and a dimensionless empirical formula for the proportion coefficient of energy was constructed. Furthermore，the calculation model of the rockfall impact force was established and its reliability was verified. The results show that the proportional coefficient of energy is negatively correlated with rockfall mass，impact velocity and impact angle，but positively correlated with rockfall size，soil density and compressive strength. The proposed method based on the proportional coefficient of energy can effectively predict the maximum impact force of rockfall，and is in good agreement with the results of large-scale model tests in literature. The research can provide theoretical basis and technical support for the prevention and control of rockfall disaster.

Key words： rock mechanics rockfall impact force proportional coefficient of energy impact angle binocular stereovision technology

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	Articles by authors
	WANG Dongpo1
	ZHANG Hongyan1
	LI Wei1
	YAN Shuaixing1
	WANG Jian1
	XIANG Bo2

Cite this article:

WANG Dongpo1,ZHANG Hongyan1,LI Wei1, et al. Study on calculation method of rockfall impact force based on proportional coefficient of energy [J]. , 2023, 42(2): 317-326.

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http://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2022.0271 OR http://rockmech.whrsm.ac.cn/EN/Y2023/V42/I2/317

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