Long Distance Ventilation Technology of Driving Roadway
Although the long distance driving technology commonly used in coal mine roadway has many advantages,the long distance air supply will also cause the air leakage along the way to increase and the effective air volume of the working face to decrease,which makes the ventilation safety have a big problem.Considering the 3 500 m long roadway excavated in Pangpangta Coal Mine,the advantages and disadvantages of long distance ventilation technology were discussed to ensure that the air volume of the fan can be improved and the air leakage of the roadway can be reduced in long distance ventilation.After a series of checking calculations,it was finally decided to use 2×55 kW local fan and ducts with a pitch length of 10 m and a diameter of more than 1 m in Pangpangta Coal Mine.
NETL
NSTL
万方数据
