焦家寨煤矿通风系统阻力测定与分析

为了解矿井通风系统中通风阻力分布状况，更好地通风降阻，并为通风设计、网络解算和优化改造提供可靠的基础信息，有必要对矿井通风系统的阻力进行测定。采用基点法进行通风系统阻力测定，选取不同测点测定参数，并从测定精度评价、通风阻力分布状况、矿井等积孔和风阻4个方面对测定结果进行计算分析。结果表明：焦家寨煤矿的通风系统布置和阻力分布较合理，通风难易程度属于容易等级，3个采区的公用进风风路风阻偏大，矿井井下调节风量的设施过多，且风门漏风量偏大，建议更换1号和2号风机，并加强矿井总回风巷道的维护和管理。

Measurement and Analysis of Resistance in Ventilation System of Jiaojiazhai Coal Mine

In order to understand the distribution of ventilation resistance in mine ventilation system，provide better ventilation and resistance reduction，and to provide reliable basic information for ventilation design，network calculation and optimization，it is necessary to measure the resistance of mine ventilation system.The resistance of ventilation system was measured by base point method，and the parameters were determined for different measuring points.The measurement results were further calculated and analyzed from four aspects： evaluation of measurement accuracy，the distribution of ventilation resistance，the accumulation holes of mine and wind resistance.The results show that the layout of ventilation system and resistance distribution of Jiaojiazhai coal mine is reasonable，and the degree of ease of ventilation is easy.The wind resistance of the common air inlet wind roads in the three mining areas is large，and the facilities for regulating the air volume down hole in mines are too much，and the amount of air leakage from the damper is too high.It is recommended to replace the No.1 and No.2 fans and to strengthen the maintenance and management of the mine’s total return airway.