Effects of Geologic Condition to Mine Gas Distribution and Control Measures

By analyzing the geological exploration data and actually monitoring gas data of the Jiangjiahe coal mine in Bin-chang mine area, preliminary summarized geological conditions affecting the mine high gas distribution, such as sealing effect of the coal seam roof and floor mudstones, a high-pressure zone of the fold axis and climbs stress concentration sections, and mining area have not experienced a strong geological evolution, inertinite and vitrinite high content, low coal rank, slowly flowed groundwater and deeper buried depth, and also combined with the gas largely emission characteristics in ZF1404 coalface (i.e. central syncline), adopted the integrated measures to control coal gas, such as set out air brattice in up corner of coalface, and high pressure air channel, and rigidity drainage pipe the gob of the neighbor coalface, increase air quantity of coalface, and construct high position drill shack to drain the gas from the neighbor coalface in advance, construct across drill hole to drain the gas from the working seam in advance. These control measures acquired favorable effects to control the gas of ZF1404 coalface of Jiangjiahe coal mine.