Research On The Relief Scope Of Influence And Eliminate Outburst Effect Of Protective Seam Mining Of The Wang Xingzhuang Coal Mine

In the control of coal and gas outburst measures required in advance of regionalmeasures, local measures complement. Mining protective seam as one of the regionalcontrol outburst measures proved to be the effect is obvious. This paper take the Wangxingzhuang coal protective seam mining as the research pilot site, mainly to study therelief sphere of influence and eliminate outburst effect of a protection seam mining inthe Wang xingzhuang mine.Protection seam mining similar simulation experiment on the deformation of theprotective seam in the process of the protective seam mining field, stress field changes,the scope of protection were investigated;By numerical simulations, changes in thestress field of the protection seam mining, changes in the elastic modulus, the sound ofthe launch field were investigated;By investigated the Mining effect of the protectiveseam of the mining face of Wang xingzhuang mine, analysis of the gas pressure changesbefore and after the protection seam mining, gas content changes, gas forecast indexchanges and permeability coefficient changes.Protection seam mining simulation experiments and field effect that by theprotective seam mining, protective seam of stress to reduce the fractured, gas pressure isreduced, lower gas content, permeability coefficient increased. Protection seam miningto good effect on the protective seam of protection.