Gas Control Technology of “U” Shaped Ventilation System in Fully Mechanized Coal Face of Sanjiaohe Coal Mine

Through the gas emission situation and law of "U" shaped ventilation system 2-504 in Sanjiaohe Coal Mine, it studied the application of the "three-pronged" omnibearing gas control technology, which could effectively reduce the gas of the working face and the upper corner. It ensured the safe production of the coalface, promoted the development of the coal mining technology.