Research on the Distribution Law of Hydrogen Sulfide in 9-805 Working Face of Pangpangta Coal Mine
Aiming at the problem of high concentration of hydrogen sulfide in 9-805 working face of Shanxi Lvliang Pangpangta Coal Mine,the migration law of hydrogen sulfide concentration in working face was studied by field measurement,and the concentration of hydrogen sulfide in working face was measured by CD4 multi-parameter tester.The field measurement results show that in the vertical direction of the roadway,the concentration of hydrogen sulfide increases first and then decreases with the increase of the height of the roadway floor,in the horizontal direction,the concentration of hydrogen sulfide gradually decreases with the increase of the distance from the coal wall,and along the direction of air flow in the working face,the concentration of hydrogen sulfide gradually decreases because it is gradually away from the shearer.
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