Liu Yang, Lu Cai-Ping, Liu Bin, Zhang Heng, Wang Hong-Yu
Key Laboratory of Deep Coal Resource Mining (Ministry of Education), School of Mines, China University of Mining and Technology, Xuzhou, Jiangsu 221116, PR China.
Key Laboratory of Deep Coal Resource Mining (Ministry of Education), School of Mines, China University of Mining and Technology, Xuzhou, Jiangsu 221116, PR China; Department of Civil Engineering and Lassonde Institute, University of Toronto, Toronto, Ontario M5S 1A4, Canada.
Ultrasonics. 2019 Aug;97:46-56. doi: 10.1016/j.ultras.2019.05.001. Epub 2019 May 3.
Based on experimental and in-situ tests, the propagation and attenuation rules of seismic wave in the intact and jointed rocks subjected to conventional triaxial loading condition were investigated, especially the influencing effects of joints and beddings on the attenuation. Meanwhile, the frequency-spectrum evolutions during the process of attenuation were analysed in detail. To verify the outcomes obtained from the laboratory, the attenuation characteristics of seismic wave generated by blasting in underground strata were tested, and the attenuation rules by the joints between strata was summarized. Finally, the seismic response of joints and beddings in rocks was revealed. This work put forward some references for early weakening and controlling coal-rock dynamic disasters triggered by seismic wave in coal mines based on the attenuation effect of artificial discontinuity such as joint and bedding.
基于室内试验和现场测试，研究了常规三轴加载条件下地震波在完整岩石和节理岩石中的传播与衰减规律，重点分析了节理和层面构造对地震波衰减的影响。同时，详细分析了地震波衰减过程中的频谱演化特征。为验证室内试验结果，对地下岩层爆破地震波的衰减特性进行了测试，总结了岩层节理对地震波的衰减规律。最终揭示了岩石中节理和层面构造的地震响应特性。基于节理和层面等人工不连续面对地震波的衰减效应，该研究为煤矿井下地震波触发的煤岩动力灾害的早期弱化和防控提供了参考依据。
