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为了量化采煤工作面非均匀环境营建技术气流组织,提高采煤工作面降温效果,利用热平衡方程、射流理论,研究了追踪型小型空冷器降温范围、数量、送风量、送风速度、射流角度,对2301采煤工作面进行了工程计算,采用皮温测试和主观热感觉的方法进行了热舒适试验研究。结果表明:2301工作面均匀布置10个小型空冷器,每个风量0.46 m3/s,射流出口风速2.34 m/s,射流末端风速0.54 m/s,符合工作面风速要求;受试人员各测点平均皮温在32.16~33.82℃之间浮动,皮温平均值为33.05℃,结果与Fanger舒适皮温接近,工人热感测试认为舒适的占65.7%,认为稍暖的占23.6%。
In order to quantify the gas flow in non-uniform mining environment and improve the cooling effect of coal mining face, the cooling range, number, air supply rate, air velocity, jet Angle, 2301 coal mining face was calculated, the thermal comfort test was conducted by using the skin temperature test and the subjective thermal feeling method. The results show that 10 small air coolers are evenly arranged on 2301 working face, each air volume is 0.46 m3 / s, jet exit wind speed is 2.34 m / s and jet end wind speed is 0.54 m / s, which meets the wind speed requirements of working face; The average skin temperature fluctuated between 32.16 and 33.82 ℃. The mean skin temperature was 33.05 ℃. The average skin temperature was close to that of the Fanger comfortable skin temperature test. The workers’ thermal test found that 65.7% were comfortable and 23.6% were slightly warm.