Study On Adjacent Layers Gas Extraction Technology Research Of Shangsheerjing Coal Mine9302Face

In order to solve rock high pumping lane gas control process of disadvantages on ya ngquan city shangsheerjing coal co.,LTD,taking9coal9302working face adjacent layer gas extraction project as the background,based on the theory of coal mining,mine rock m ass mechanics,gas extraction technology numerical modeling software analysis theory and method,Puts forward the economic effective on adjacent layer of large diameter bored ga s extraction scheme.According to the yangquan city shangsheerjing coal co.,LTD.6coal geological conditi ons and occurrence of coal seam characteristics,for6coal seam proceed measurement the gas content,furthermore analyzes the coal seam gas content distribution,thereby work fac e adjacent layer gas extraction provide basic data.This paper using RFPA2D simulation of the9302face in the process of mining "three zones" changes,determine the fissure zone foundation height,furthermore calculated the final hole drilling bits, Angle and other imp ortant indicators,at the same time by use of ANSYS software analyzes on the different h ole spacing circumstances surrounding rock drilling damage,it is concluded that the drillin g design foundation parameters,for9302working face safety mining provides effective ga s control scheme.The results of the study show that9302working face of the large diameter adjacent layer gas extraction in production practice has obtained the good effect,effective reduce t he gas concentration and coal seam gas pressure of the mine stope,and ensure that the p roduction cost of reasonable and reduce,at the same time it can improve the production e fficiency,to ensure continue excavating,which has high of practical and the promotion val ue.