Study of Reducing Mine Dust Concentration in Working Face with Coal Seam Infustion
Dust prevention is always a public concern in coal excavating. In this paper, two coal tunneling faces were chosen, and four survey stations (2m, 5m far from working face respectively, driver station and 5m after driver station) were disposed at each tunneling face. The total dust concentration of fore-and-aft coal seam infustion were measured and compared, and the same method was used to analyze the level for the size distribution of respirable dust (0.5-2.0μm, 2.0-3.0μm, 3.0-5.0μm, 5.0-7.0μm). The results showed that the total level decreased obviously, and the average removal ratio was about 73％, and the maximal value can get around 85％. Satisfied effect was also obtained about the respirable dust, the average value is approximately 78％. Based on the data of size distribution measured, the optimal range was 3.0-5.0μm and the ratio was achieved to 82％ or so. The corresponding mine gas level was also measured and the depressed level was found after coal seam infustion.
coal seam infustion dust size distribution control
XU Dengke ZHOU Hengliang CHENG Gang HU Zuxiang
School of Civil and Architecture,Anhui University of Science and Technology,Huainan 232001,Anhui,Chi School of Energy Sources and Safety,Anhui University of Science and Technology,Huainan 232001,Anhui,
国际会议
The 2008 International Symposium on Safety Science and Technology(2008年安全科学技术国际会议)
北京
英文
1479-1481
2008-09-24（万方平台首次上网日期，不代表论文的发表时间）