摘要
为解决马兰矿2#煤层快速掘进工作面粉尘浓度过高的问题,以12702运输顺槽掘进施工为背景,通过数值模拟、实地监测、理论分析等研究手段,对长压短抽除尘系统参数进行优化,确定压风筒距迎头最佳距离为15 m,压风筒出风量为650 m^(3)/min,抽风筒距迎头3 m,抽风筒风量为500 m^(3)/min,压抽比为1.3。通风参数优化后掘锚机司机处粉尘浓度减小56.5%,绝大部分粉尘控制在掘锚机前方,巷道回风侧粉尘浓度显著降低。
In order to solve the problem of excessive dust concentration in the fast heading face of the 2# coal seam in Malan Mine, taking the excavation construction of the 12702 transportation trough as the background, the parameters of long pressure and short extraction dust removal system are optimized by means of numerical simulation, field monitoring and theoretical analysis. It is determined that the optimum distance between the pressure air tube and the head-on is 15 m, the air output of the pressure air tube is 650 m^(3)/min, the distance between the exhaust tube is 3 m,and the air volume of the exhaust tube is 500 m^(3)/min. The ratio of pressure to extraction is 1.3. After the ventilation parameters are optimized, the dust concentration at the driver of the excavation anchor is reduced by 56.5%, most of the dust is controlled in front of the anchor, and the dust concentration on the return side of the roadway is significantly reduced.
作者
李晓斌
Li Xiaobin(Malan Mine of Shanxi Xishan Coal and Electricity Co.,Ltd.,Shanxi Gujiao 030205)
出处
《山东煤炭科技》
2022年第12期113-115,121,共4页
Shandong Coal Science and Technology
关键词
快速掘进
长压短抽
数值模拟
通风除尘
rapid tunneling
long pressure and short pumping
numerical simulation
ventilation and dedusting
