多位置分布配重下引导式落石缓冲系统冲击防护性能研究

doi:10.13722/j.cnki.jrme.2018.1052

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Abstract The rockfall attenuator system aims at preventing rockfall hazards by controlling the rockfall trajectory and attenuating the rock impact energy. In order to study the energy dissipating performance of the system，the laboratory rockfall impact experiment was conducted，a multiposition distributed counterweight method was put forward based on the net deformation analysis，and a numerical model was built to study the performance of the system under high-speed rockfall impact and to simulate the protecting process of the system against the rockfall impacting simultaneously or continuously. The research results show that the multiposition distributed counterweight method obviously improves the protection performance of the system. The attenuation rates of the rockfall velocity and the kinetic energy increase by 20.02% and 21.56% at most respectively. The counterweights at different positions on the net improve the protection performance of the system differently. The closer the counterweight to the falling position，the more obvious the improvement. Meanwhile，by using distributed counterweight method，the high-speed rockfall impact and simultaneous/continuous rockfall impact can also be defended successfully. The research results can provide a reference for the design and engineering application of the rockfall attenuator system.

Key words： slope engineering rockfall attenuator system multiposition distributed counterweights rockfall impact experimental research

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	Articles by authors
	CUI Lianming
	SHI Shaoqing
	WANG Min
	WANG Wenkang

Cite this article:

CUI Lianming,SHI Shaoqing,WANG Min, et al. Research on the impact protection performance of the rockfall attenuator system under multiposition distributed counterweights conditions#br#[J]. , 2019, 38(2): 332-342.

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http://www.rockmech.org/EN/10.13722/j.cnki.jrme.2018.1052 OR http://www.rockmech.org/EN/Y2019/V38/I2/332

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