高阻尼橡胶用于岩石动载冲击防护的吸能特性试验研究

doi:10.13722/j.cnki.jrme.2017.1096

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Abstract In order to control and reduce rockfall，chamber instability，rockburst and other engineering dynamic，a new energy absorbing bolt is developed，taking advantage of the excellent properties of high damping rubber such as resisting impact effect，resisting shearing and absorbing energy. In this paper，to evaluate the energy absorbing characteristics of high damping rubber on impact protection of rock，a series of impact tests were conducted by SHPB system of ?50 mm. The energy absorbing characteristics of rubber samples，granite samples and rubber-granite samples under different loading rates were obtained. Results shows that the energy absorbed by high damping rubber increases linearly with incident energy，which indicates that the energy absorbing rate is nearly constant. For granite samples，the growth rate of fractal dimension is 5.5 times that of rubber-granite samples，which reflects good energy absorbing characteristics of high damping rubber under dynamic loading. In addition，the optimal relationship between rubber thickness and absorbed energy is confirmed. When the incident energy is between 200–250 J，the recommended rubber thickness of rubber is 15–20 mm. The research results can provide design guidance and theoretical foundation for the development of energy absorbing bolts.

Key words： rock mechanics deep hard rock small strain dynamic disaster high damping rubber energy absorbing

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	Articles by authors
	QIAO Lan
	ZHOU Ming
	YANG Jianming
	LI Qingwen

Cite this article:

QIAO Lan,ZHOU Ming,YANG Jianming, et al. Experimental study on energy absorption of high damping rubber for rock under dynamic loads[J]. , 2018, 37(4): 961-968.

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https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2017.1096 OR https://rockmech.whrsm.ac.cn/EN/Y2018/V37/I4/961

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