Microseism Precursory Characteristics of Coal and Gas Outburst for Contains Different Thickness of Soft Stratification
Abstract：According to the rock failure damage theories and the gas-solid coupling method,we use RFPA2D-GasFlow soft code,study the characteristics of microseism precursor of coal and gas outburst.It is that with the increment of soft stratification thickness,the characteristics of microseism precursor of coal and gas outburst are become fuzzy,and the times of seismic quiet period become long.The characteristics of microseism precursor of coal and gas outburst in space is become concentration with the increment of soft stratification thickness,and the location of microseism precursor is consistent with the location of initial failure of coal and gas outburst.
Keywords：gas-solid couplingcoal and gas outburstnumerical testsmain shockmicroseism precursorsoft stratification
Publication Date：2011-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)