2014•Coal TechnologyRequires access

Numerical Simulation Analysis of Failure Characteristics of Surrounding Rock in Deep Tunnel

Qiu Che

Abstract

In view of the surrounding rock in deep roadway with the supporting characteristics of instability deformation serious,large deformation and high stress concentration,taking the surrounding rock of1422(3) working face of Dingji coal mine in Huainan mining area as the research background,the instability deformation mechanism of surrounding rock and failure characteristics of deep rock were studied by using the research methods of theoretical analysis and numerical simulation.And the evolution law of surrounding rock stress field of the space-time is also researched,the mechanical nature of the zonal rupture is obtained,which provide an important theoretical reference for surrounding rock control and support design of deep tunnel.

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Key concepts: Geology, Deformation (meteorology), Geotechnical engineering, Instability, Computer simulation, Stress (linguistics), Mining engineering, Stress field