Comprehensive Treatment Technology of Hypoxic in Return Air Corner of Fully Mechanized Mining Face in Gaoyang Coal Mine
In order to solve the problem of hypoxic in return air corner of 22104 fully mechanized mining face,a technology of hypoxic treatment in return air corner of mining face based on balanced pressure ventilation is proposed,and auxiliary devices such as pressure air inducer,air deflector and air curtain are used to reduce air leakage and increase air quantity in return air corner.After field application,the problems of large air leakage and hypoxic in return air corner of 22104 fully mechanized mining face has been solved well,and the oxygen volume fraction in return air corner is stable at about 20%,which has achieved good application results.
Coal miningReturn air cornerHypoxicAir-leakage passageBalanced pressure ventilation
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