Study And Application About The Fire Prevention Technology Of Balanced Pressure System In Suhaitu Coal Mine

In recent years. Full-mechanized Caving Mining Technology has been wide application in multi-seam mining. Because of the large falling height, it often cause connectivity between different coal seam and serious problem of air leakage which are very harmful to the prevention of gob spontaneous combustion. when the autoignition occurs in one seam, it always lead to other coal seams been polluted and threats to the safety of coal mining.The technology of fire proof by equal pressure has the advantage of small investment and less work in many anti-extinguishing methods, especially in the prevention of air leakage. When using the method of Numerical Simulation in different condition, we find the fact that the width of Spontaneous Combustion Zone does not only turn small, but also return to goaf, it shows the superiority in preventing working face. The1354working face which staying under multiple coal seams and fire area use Balanced Pressure System of pressor type. Under the monitoring of air leakage airflow stability and goaf air, we find that the technology is succession; and we optimization the Parameters by analysis numerous data.