Technology of comprehensive dust reduction of blasting dust in Ha'erwusu Open-pit Coal Mine
JIAO Xiaoliang
LIAO Zhouquan
DING Xiaohua
LU Xiang
LI Bin
Abstract：Aiming at the problems of excessive dust generation,high instantaneous concentration,wide pollution range,and limited efficiency of existing single dust suppression measures during bench blasting operations in Ha'erwusu Open-pit Coal Mine,this article proposes an integrated"three-in-one"dust reduction technology scheme of combining water-sealed blasting,spray dust suppression and dust suppressant application based on the generation and diffusion characteristics of blasting dust at different stages.Through field experiments,we quantitatively evaluate the effect of the integrated dust reduction technology.The results show that the PM10 concentration in the test area is significantly lower than that in the control area,with the peak mass concentration reduced from 895.9 μg/m3 to 215.7 μg/m3(reduction rate of 75.92%)and the average mass concentration reduced from 326.4 μg/m3 to 48.8 μg/m3(reduction rate of 85.05%).
Keywords：blasting dustwater-seal blastingspray dust reductiondust suppressantintegrated dust reduction technology
Publication Date：2026-02-28
Online Publishing Date：2026-03-19(First online date of this platform, not the publication date of the document)
Pages：5( 16-20 )