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针对贵石沟矿井南翼采区通风阻力偏高,制约南翼采、掘工作顺利开展的情况,对南翼采区进行了通风阻力测定。经过VENT-CAD程序对其解算与分析,发现2#主斜井进风量在168～2500m3/min之间时,会造成南翼运输巷局部地点微风的情况。综合测试与模拟结果确定了520m水平南翼运输副巷改道,实现增大2#主斜井风量,以达南翼采区降阻之目的。结果表明:520m水平南翼运输改道62m,当2#主斜井进风量为2486m3/min时,可达南翼采区降阻幅度达466Pa,其它各巷道风速达标。经现场调整验证:降阻效果明显、主要井巷实测风量与方案模拟结果基本吻合。调整改造方案简单可行,能满足生产要求。
Aiming at the high ventilation resistance in the south wing of Guishigou coal mine and restricting the smooth development of mining and digging in the southern wing, the ventilation resistance of the mining area in the south wing was measured. After its calculation and analysis by VENT-CAD program, it is found that the air volume of main shaft 2 # is between 168 ~ 2500m3 / min, which will cause the breeze in some locations in the south wing transportation lane. The comprehensive test and simulation results confirm the diversion of the lane at the south wing of 520m level to increase the air volume of No. 2 main inclined shaft and reduce the resistance of the south wing mining area. The results show that the south wing of 520m diverts 62m, and when the inlet air volume of main shaft 2 # is 2486m3 / min, the drop resistance of up to 461Pa can reach the south wing and the wind speed of other roads can reach the standard. After field adjustment and verification: the effect of lowering the resistance is obvious. The measured air volume of the main roadway basically agrees with the result of the simulation. Adjustment and reform program is simple and feasible, to meet the production requirements.