Numerical simulation of movement characteristics of rock seams above the initial coal seam and its application in the safe production of coal mine

It is very important to eliminate the outburst danger and to realize the safe high-efficient exploitation of coal and gas especially in high-gas coal seams because the outburst of coal and gas is one of the main accidents in coal production.This article simulates the pressure-relief effect of the coal seams in long-distance after the initial coal seam is mined by using the software of ANSYS according with the factual geologic conditions of a mine.At the same time it demonstrates the feasibility of the long-distance pressure relief gas extraction and the safe high-efficient exploitation of coal and gas together in high-gas coal seams combining with a great deal of local data.