关键词: 煤矿, 热害, 地面集中式降温系统

Abstract: The coal seam in the Shoushan First Mine lies in the second stage thermal hazard zone. The geothermal gradient above the coal seam floor is 2.63-4.18℃/100m, and the average geothermal gradient is 3.42℃/100m.In order to ensure the physical and mental health of the workers and the production safety of the mine, Pingbao company adopts the ground centralized cooling technology to deal with the thermal hazard of the Shoushan First Mine. In this paper, the cooling effect of the ground centralized cooling system is evaluated by analyzing the cooling effect of each working face in the Shoushan First Mine. The results show that the temperature of the working face decreases by 5-11℃and the humidity decreases by 20-30%. The temperature of the working face basically drops below 25 ℃, and the humidity drops below 75%.The engineering practice of Pingbao company in Shoushan First Mine provides new ideas and methods for the cooling of high temperature mine.