二维平面波通过节理岩体的传播规律研究

doi:10.13722/j.cnki.jrme.2023.0422

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Abstract In underground rock mass engineering，the dynamic disturbance propagates in the form of stress wave，and is affected by discontinuities such as joints in rock mass. In order to understand the effect of joint spatial parameters on the propagation of two-dimensional plane stress wave，the indirect stress wave separation method was extended to the case of multi-jointed rock mass，and an indoor experiment was carried out by pendulum plate tester. The results showed that the indirect stress wave separation method could be used to obtain the transmission and reflection characteristics of stress waves in oblique joints and joint sets. The incident angle of the stress wave had a significant effect on the reflected P-wave and the reflected S-wave. The increase of dimensionless joint spacing could reduce the reflection coefficient and transmission coefficient of P-wave obviously. With the increase of the joint intersection angle，the S-wave reflection coefficient and the P-wave transmission coefficient of the intersecting joint decreased，and the difference between the two increased gradually. When the joint crossing angle changed，the influence of joint spacing on the refection and transmission coefficient was dominant. The research results of this paper could deepen the understanding of the two-dimensional stress wave propagation law in jointed rock mass，and have guiding significance for geotechnical exploration and stability analysis of rock mass engineering.

Key words： rock mechanics wave propagation joint two-dimensional plane wave transmission and reflection coefficient indirect stress wave separation method

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	Articles by authors
	SHEN Cong1
	ZHAI Tianqi1
	HUANG Chaomin2
	ZHU Jianbo3
	4

Cite this article:

SHEN Cong1,ZHAI Tianqi1,HUANG Chaomin2, et al. Study on propagation law of two-dimensional plane wave through jointed rock mass[J]. , 2024, 43(S2): 3960-3971.

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https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2023.0422 OR https://rockmech.whrsm.ac.cn/EN/Y2024/V43/IS2/3960

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