Optimization of tunnel support parameters with consideration of seismic wave radiation pattern in the fault-slip burst

Chinese journal title: Caikuang yu Anquan Gongcheng Xuebao
As the underground mining extends gradually towards depth, more and more seismic events induced by fault slip occur and cause great damages, which have become a severe potential threat to mining safety. In view of the plane strain problems, through the three dimensional discrete model established, comparison and analysis was carried out between the equivalent calculation of plane strain in 3D model and a 2D discrete model. The results have shown that the research model developed to simulate the propagation of seismic wave in 3D is feasible and applicable. The study of the effect of radiation pattern on seismic propagation revealed and tested the direction of P-and S-wave propagation, which presents high consistency to double couple model of the fault slip. On this basis, the comparison with the design scaling law formulas proposed by Kaiser and associates finds that the existing design scaling law does not totally satisfy the demand of practical engineering. Numerical calculation and analysis with the three dimensional discrete model can further optimize the support parameters, provide better service for system design of mining support, and ensure the safety and high efficiency in mining.

Li, XibingSchool of Resource and Safety Engineering, Central South University, Changsha, Hunan (författare)
Zhang, PingLuleå tekniska universitet,Geoteknologi(Swepub:ltu)pinzha (författare)
Nordlund, ErlingLuleå tekniska universitet,Geoteknologi(Swepub:ltu)erlnor (författare)
Dong, LongjunSchool of Resource and Safety Engineering, Central South University, Changsha, Hunan (författare)
Luleå tekniska universitetGeoteknologi (creator_code:org_t)

Ingår i:Journal of Mining and Safety Engineering: China University of Mining and Technology34:4, s. 715-7221673-3363

Av författaren/redakt...: Chen, Guanghui; Li, Xibing; Zhang, Ping; Nordlund, Erling; Dong, Longjun

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