不同地应力下爆炸应力波在节理岩体中传播规律模型试验研究

doi:10.13722/j.cnki.jrme.2016.1004

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Abstract The propagation of stress wave in jointed rock under different in-situ stresses was studied through model test considering the influence of the joint number. An equation of wave propagation across multiple joints under in-situ stresses was established. The blasting stress wave was generated by the detonating cord，and the stress was monitored at different positions. The composition of wave attenuation induced by the jointed rock was studied under in-situ stresses，and the influence of confining pressure and joint number on the wave attenuation was analyzed. Considering the influence of in-situ stresses on nonlinear joint model，the equation of stress wave in multiple nonlinear deformation joints under in-situ stress was derived based on the method of time domain recursive analysis. The results show that the wave attenuation in the jointed rock is induced by the combined effect of the rock material and the joints. With the increasing of the in-situ stresses，the attenuation of explosive wave in the jointed rock is enhanced，in which the wave attenuation induced by rock material is strengthened and the attenuation caused by joints is reduced.

Key words： rock mechanics in-situ stresses stress wave propagation model test

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	Articles by authors
	LI Xinping1
	2
	DONG Qian1
	2
	LIU Tingting1
	2
	LUO Yi1
	2
	ZHAO Hang1
	2
	HUANG Junhong1
	2

Cite this article:

LI Xinping1,2,DONG Qian1, et al. Model test on propagation of blasting stress wave in jointed rock mass under different in-situ stresses[J]. , 2016, 35(11): 2188-2196.

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https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2016.1004 OR https://rockmech.whrsm.ac.cn/EN/Y2016/V35/I11/2188

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