关键词: 矿井粉尘, 粉尘防治, 多组份水炮泥, 封闭雾化, 风雾双幕, 干雾降尘

Abstract: In view of the increasingly serious dust pollution in the mine operation environment and the problems of difficult prevention and control,weak coordination and poor effect of existing technical means,in order to realize the efficient control and removal of mine dust pollution from the source,improve the mine operation environment and ensure the physical and mental health of operators,the dust prevention technical equipment in three typical operation links such as mine mining,excavation and transportation has been systematically studied and developed.High efficiency technical equipment systems such as multicomponent water blasting mud dust suppression in metal mine stope,closed atomization and dust control in coal mine fully mechanized mining face,dust purification in metal mine driving roadway,wind and fog double curtain synergistic dust control in coal mine fully mechanized mining face and dry fog dust reduction at mine belt transportation transfer point are proposed.Combined with field test and industrial application,the performance of the developed series of technical equipment is compared and analyzed.The results show that compared with ordinary water cannon mud,the dust suppression effects of the new multicomponent blister mud on total dust and exhaled dust are increased by more than 90% and 80% respectively.After the onsite application of atomization closed dust control technology and equipment in fully mechanized coal mining face,the average total dust and exhalation dust reduction rate of working face are more than 90%.The dust removal efficiency of the dust purification system of metal mine excavation roadway is more than 91%.The purified air flow can enter the circulating ventilation system to effectively improve the utilization rate of mine air flow.The average dust reduction rates of total dust and exhaled dust can reach 97.78% and 98.13% respectively.The dry fog dust reduction device has good dust reduction efficiency,which reaches 80.4% at the belt transportation transfer point and 81.8% at the coal chute transfer point.