摘要
针对济宁二号煤矿南翼通风系统需风量大、通风线路较长的现状,为下一步进行通风系统优化提供基础依据,确保矿井通风系统能够满足未来生产需求,进行了济宁二号煤矿南翼通风系统阻力测定。本次通风阻力测定采用精密气压计逐点测定法;测定结果显示:济宁二号煤矿南翼通风阻力为2815.74 Pa,测定误差小于5%,测定结果满足矿井通风阻力测定和通风系统分析的精度要求;其中回风段距离占总距离的22.28%,而阻力值却达到总阻力的48.7%左右,回风段阻力值及所占比重偏高;结合现场实际情况以及阻力测定结果提出了清理杂物、扩修巷道等局部降阻措施。
In order to provide fundamental basis for the next step for ventilation system optimization,ensure the mine ventilation system satisfying the production requirements in the future,ventilation resistance is determinated at south limb of the second coal mine of Jining. The point by point determination method by precision barometer is used for ventilation resistance determination. The determination results showed that the ventilation resistance at south limb of the second coal mine of Jining ventilation system is 2815. 74 Pa. Determination error is less than 5%. The determination results meet the accuracy of mine ventilation resistance measurement and analysis of the ventilation system. The return air distance accounted for 22. 28% of the total distance. And the resistance value is reached to about 48. 7% of total resistance. The proportion of return air resistance value is on the high side. Local resistance reduction measures are raised such as cleaning up the accumulation of sundry,extension of roadway cross section and so on combined with the actual situation and resistance measurement results.
出处
《山东煤炭科技》
2014年第6期87-90,共4页
Shandong Coal Science and Technology
关键词
煤矿
通风系统
能量方程
通风阻力
降阻措施
coal mine ventilantion system energy equation ventilantion resistance resistance reducing measures
