Huaibei Coal complex geological structure, coal-bearing basins strong late reformation, coal and coalbed methane resources in terms of occurrence is more complicated; gas disaster in recent years, frequent accidents, of gas deposit law, analysis of regional gas distribution geological factors controlling the production of the mine's safety play a guiding role. Methane gas is a complex geological body, stored in the coal seam and surrounding rock. Gas in coal reservoir in the occurrence and distribut...