The Research Of Coal Mine Drainage Resources In Kailuan Mining Area

In this paper, introduce coal seam geology and dynamical phenomenon simply; based on the laboratory tests and theoretical analysis, infection factors of dynamical phenomenon in Ma jia gou 0521 working face were discussed. Combining with the tests of coal uni-axially loaded, the fracturing process of coal was analyzed. In the meantime, measuring expansion energy of initial releasing gas of soft coal in Ma jia gou 0521 and absorb constant and remains gas content. Based on the results of laboratory tests and the theoretical analysis, the infection factors of dynamical phenomenon in Ma jia gou 0521 working face were crustal stress, gas pressure and coal self weight, coal seam affusion and gas taking out and metal framework were pointed in prevention.Through the experiment of coal uni-axially loaded, we elicited that the stress strain curve of coal is a main reflection of its mechanics character. The stress strain curve of coal had different phases during the loading process. In the meantime, stress strain curves of molding coal sample and original coal sample in nature and saturation were analyzed, educed that water effect in original coal sample was bigger than in molding coal sample.Through measuring expansion energy of initial releasing gas, pointed that result of it was 123.34mJ/g, which was more than critical value of 103.8mJ/g. So, 10 level in Ma jia gou was with outburst fatalnesss when coal was uncovered in a cross-cut. Through measuring critical value of estimating outburst fatalnesses index, pointed that the value of compositive index were more than critical value, which validated veracity of expansion energy of initial releasing gas in another hand.Through measuring original gas content and remains gas content, we elicited that distressed zone length in 0521 working face was 6m, which provided powerful gist for preventing outburst.The harm of dynamical phenomenon was more and more with increase of mine deepness, therefore, the discuss of dynamical phenomenon was important in economy and society value for prevent of dynamical phenomenon in Ma jia gou mine and other mines in Kai Luan coal mines.