Application research on high efficiency coal seam water injection dust reduction technology in Ganhe Coal Mine
The No.2 coal dust in Ganhe Coal Mine has the problems of high mineral content and poor hydrophilicity.leads to excessive dust concentration in fully mechanized mining face.In order to solve this problem,a laboratory sedimentation experiment was designed to measure the wettability of different types and concentrations of surfactant solutions to coal dust.1.5％X-100,2％JFC,2％SDBS and 2％SDS solutions were selected as components for compound experiments.The ternary compound wetting agent of 1.5％X-100,2％JFC and 2％SDBS with a ratio of 1∶2∶2 was determined as the coal seam water injection additive for the field application test of 2-126 working face.Compared with the injection of pure water,the total dust removal rate of the working face increased by 62.65％,and the respirable dust removal rate increased by 72.80％,and the ideal dust reduction effect was achieved.
coal seam water injectionsurfactantcompound experiment
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