Fully Mechanized Working Face Of The Gas Emission Rules

Gas disasters are the effect of mine production safety of the important factors that gasincident is the most serious in our country’s coal damage one of the incident. Along with thedevelopment of modern comprehensive mechanized mining, coal mining strength and speedhave become China’s coal production of the trend of future development. And at the same time,gas emission is also increasing. Therefore, strengthening gas emission of fully mechanizedworking face the investigation of the rule of mine ventilation design, to guide the gas drainagedesign as well as the prevention and control of gas has important theoretical significance andpractical value. This paper is fully mechanized working face the problem of the gas emissionrules.First of all, the paper according to the analysis of the characteristics of the mining offully mechanized working face, the forecast method of using separate source, according to theactual production of the coal mine five the tiger, the1201fully mechanized working face thegas emission source into coal mining, coal, wall fell on residual coal and adjacent layer fourparts. And then in all factors taken into consideration, and on the basis of the detailed analysisof the rule out the source of the premise, establish the gas emission prediction mathematicalmodel.Secondly, this paper first to influence the fully mechanized working face of the coal seamgas emission occurrence condition and gas migration basic theory system description, andcombined with the mind the actual conditions, tiger five1201longwall face was measured andanalyzed. According to the basic parameters of the occurrence of the coal seam and themeasured data, this paper analyzes the coal gas emission intensity and time wall of therelationship of function, establish coal gas emission wall of the mathematical model.Finally, to further research into compound mining coal and gas outburst rule, at1201fully mechanized working face down the coal sampling, laboratory and the quantity of coalsamples were desorption time relationship, and to set up the gas recovery strength and functionof the time relationship. Then, set up down the amount of gas emitted from the coalmathematical prediction model.Through to the final of the gas emission sources are calculated and analyzed, we knowwall coal gas emission accounted for54.95%of the compound mining gas emission, adjacentlayer gas emission22.02%, coal mining fell21.26%, the coal and gas outburst volumeaccounted for1.77%. As you can see, in the compound mining the gas emission, coal gasemission of the wall is the biggest. Of the more than half the amount of gas emitted from. Therefore, tiger point of five1201fully, reduce coal gas emission of wall is the top priority ofgas.