摘要
为了提高矿井通风系统的稳定性,通过分析桃山煤矿矿井通风阻力,得出了负压增大的主要原因:主要进、回风巷服务年限长,巷道断面缩小、变形,失修率较高;生产水平的延伸使风流沿程增加;调节风流主要靠增加风窗等通风设施;进、回风水平公共用风段阻力较大。通过对主要回风巷道扩大断面的工程实践,降低了负压、提高了通风系统稳定性。
In order to improve the stability of the mine ventilation system, with the analysis on the mine ventilation resistance of the Taoshan Mine, the main causes of the negative pressure increased were obtained. The main causes were including the long service period of the mine income and return airways, the cross sections of the roadways getting small, the roadway in deformation and with high repair rate, the ventilation procedure increased by the mine production level expansion, the air flow adjusted mainly with the air windows and other ventilation facilities and the high resistance in the public sections of the income and return airways. With the project practices on the enlargement of the cross sections for the main return airways, the negative pressure could be reduced and the stability of the ventilation system could be improved.
出处
《煤炭科学技术》
CAS
北大核心
2009年第6期67-68,88,共3页
Coal Science and Technology
关键词
通风阻力
开帮降阻
并联风路
通风系统
ventilation resistance
resistance reduction with roadway enlarging
parallel linked ventilation airway
ventilation system
