晋华宫矿8709回风顺槽综掘工作面综合降尘措施

为了解决晋华宫矿8709回风顺槽综掘工作面压入式通风下迎头粉尘浓度过高的问题,提出了采用长压短抽的通风系统来降低迎头煤尘浓度,并对风筒的最优布置高度进行研究。在采取了综合降尘措施后,现场实测综掘机司机处全尘和呼尘降尘率达到74.9%、78.1%,降尘效果非常明显。

Comprehensive Dust-reducing Measures for Comprehensive Excavation Face of 8709 Returning Wind Slot in Jinhuagong Mine

In order to solve the problem of high dust concentration at the head under the forced ventilation of 8709 return air tunnel fully mechanized face in Jinhuagong Mine,a ventilation system with long pressure and short extraction is proposed to reduce the dust concentration at the head,and the optimal arrangement height of the air duct is studied.After the comprehensive dust reduction measures are taken,the total dust and exhalation dust reduction rates at the driver's site of the comprehensive excavator have reached 74.9%and 78.1%,and the dust reduction effect is very obvious.