Research And Application Of Gas Emission Forecast And Drainage Technology In Fully Mechanized Caving Face Of Inclined Coal Seam

With the continuous increase in the mining depth of coal resources,gas disaster accidents have become more frequent,which seriously affects the safe and efficient mining of coal mines,and has a profound impact on the economic benefits and social image of the mine.Accurate gas drainage of inclined coal seams is a technical problem.When mining such coal seams,the gas problem before and after mining should be solved first.Therefore,it is particularly important to predict the amount of gas emission from inclined coal seams.Researchers at home and abroad have also carried out a large number of studies on mine gas emission prediction and gas drainage technology in this regard,and have achieved significant results.However,how to form a targeted mine gas drainage technology system for the inclined coal seams of the Liuhuanggou Coal Mine is of great significance for ensuring the safe and efficient mining of the working face of the Liuhuanggou Coal Mine.For LiuHuangGou(4-5)06 fully-mechanized caving coal mine coal seam buried depth,high gas content,etc,through research analysis of mine geological and mining conditions,obtain(4-5)06 working face of coal seam and gas occurrence characteristics,basis of coal sample was taken by measuring the gas parameters,more detail get(4-5)06 working face of coal seam gas occurrence regularity,on this basis,the use of critical gas emission factor analysis dynamic prediction system(4-5)06 full-mechanized caving mining face in the process of the gas composition and volume of forecast,and combining the gray theory and the real time observation gas emission law,analysis law of gas emission and the relationship between various influencing factors,thus formulated the corresponding gas extraction;Based on the method of numerical simulation and field monitoring,the "three belts" height of overlaying rock in(4-5)06 fully mechanized caving face was obtained,and the design of high drilling field was carried out on this basis.Through the application and summary of the above gas extraction measures,a set of gas extraction control technology system suitable for fully mechanized caving mining face in Sulfagou coal mine is constructed,and then applied in field practice to guide the gas extraction work in working face.According to the effect of real-time monitoring of the application process of the technology system,the collected data are analyzed.The implementation effect of the technical system is tested by using the indexes in the industry regulations,and a good effect is obtained to ensure the safe and efficient mining of the fully mechanized caving face in Susulagou coal mine.Effective control of gas disaster is of great significance to the safety production of high gas mines and plays an important role in promoting the further improvement of national coal mine safety situation.