Experiment Study Of Synthetical Treatment Technology On High Gas Drainage And Outburst In Sihe Mine

Making full use of methods such as theoretical analysis, numerical simulation, laboratory test and field test, this paper studies the problems such as geological occurrence of gas, gas emission, gas drainage, coal and gas outburst etc. of 3# coal seam in Sihe Mine, to explore a high gas treatment technologies model in Sihe Mine. This paper analyzes in detail the feature of geological structure and gas geology regularity of Jincheng mining area, and studies gas permeability in coal under different confining pressures, then after analyzing and summarizing gas emission law of coal face and heading face in Sihe Mine, builds forecast model for gas emission in workface. Based on the field test results, the author simulates gas drainage effect under different drilling parameters, optimizes drilling drainage parameters and acquires technology parameters of area and local gas drainage and outburst preventing. In addition, the mechanism of multiply split tube and deep hole loosen Pre-splitting Blasting used to prevent and control the high gas outburst coal seam is studied. FLAC3D software is used to analyze the changes of the coal seam stress for the advance of working face to get the features of stress distribution field of working face and submit some ordinary forecast method and measurement used in driving face and prevent local outburst measurement.