The Research Of Gas Drainage Technology In The Mining Coal Face Of Zhongling Coal Mine

The thesis is on the basis of consulting and summarizing forefathers' experience, Through surveying and studying live, collecting the material theory studying and actual confirmation,through analysising rule of gas movement and gas tax saves of mining coal face of Zhongling coal mine, we find influence factor of mining coal face gas emissing quantity. The thesis thinks wave property of gas emissing quantity is relatively large through analysising gas emissing quantity actual survey data. Grey Markov model is better to predict it.The thesis not only analysises the Grey prediction model,but also advantage and disadvantage of Markov Chain prediction model.and improves the Grey prediction model,estables improvement Grey Markov prediction model. We confirm it on the basis of gas emissing quantity actual survey data of mining coal face of Zhongling coal mine.The prediction result is more precise. The thesis analysises the present gas drainage system and effect on the basis of collecting the materials,and influence factor of gas drainage effect in macroscopic in domestic coal mine.It lists the way of improvement gas drainage rate.Finally, the thesis proposes the reasonable gas drainage method through analysising the existed gas drainage system in Zhongling coal mine.and improving it on the original basis.