综采工作面采煤机气水喷雾降尘技术及应用

In order to solve the serious coal dust problem in fully mechanized coal mining faces and to improve the operation environment of workface in the mine，the gas-water sprayer, technical process and installation of gas-water spraying device was designed based on the gas-water spraying mechanism. The site application results showed that the total coal dust control efficiency could reach 60.1% to 73%,and the dust control efficiency of respirable dust control efficiency could reach 49.6% to 72.4% after the gas-water spraying device is installed on the ccal shearer. The gas-water spraying device could had the characteristic of a large dust control area and a good spraying result. The water pressure required could not be over 2 MPa and the gas pressure required could not be over 0.8 Mpa。