Research on Key Factors of Moist Shotcret Machine for Dust Control and Its Application
LI Dingfu
LIANG Aichun
WANG Weili
Abstract：The dust concentration is higher and has great harm in the bolting and shotcrete lining operation. In this paper, experimental study was made on the working air-pressure, the air leakage volume and the dust leakage amount of the moist shotcrete machine under different working conditions. The results showed that the working air-pressure, the air leakage volume and the dust leakage amount of the machine were all proportional to its conveying distance, the dust leakage amount was inversely proportional to the moisture content of the materials, and the air leakage amount had no direct relation with the moisture content. The optimum air volume and negative pressure required by the shotcrete machine for dust control were obtained through experiments, and a new dust control and removal device designed for the shotcrete machine was developed on the basis of these parameters, which can reduce the total dust concentration to less than 6 mg/m3 , with the dust removal efficiency up to 99% or more.
Keywords：moist shotcrete machinemoist shotcretingdust controldust removal efficiency
Publication Date：2016-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 42-44,48 )