Numerical Simulation Research of Coal Pillar Safety in Shangwan Mine

摘要

Coal pillar stability has the direct relation with the safety and production of mine. Shangwan mine generally use broad coal pillar to protect tunnel, but with increasing of exploitation depth and exploitation condition complexity, setting coal pillar breadth has some problem of security and rationality, this article go deep into research on coal pillar breadth via numerical simulation with theory analyze and locale observation , the greatest breadth of stress limiting equilibrium zone is 13.1 m ,the coal pillar breadth of Shangwan mine is 25 m. Hereby, it is safe and rational.