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一、地温概况由于地表煤层逐渐被开采完毕,矿井掘进向更深的深度发展,井内工作面及巷道受到地热的影响越来越严重,岩温及气温大为升高,工作环境及卫生条件恶化。由于地质原因,地温随深度加深而升高,包括受到岩浆活动及断裂活动、煤系地层放射性物质含量、地下热水循环和涌出的影响。此外,还存在着一些特殊地质因素的影响。据我国煤田地温观测资料统计,地温增高率为2～4℃/百米。目前已有40多对矿井采掘工作面气温超过30℃。西德伊本比伦
I. Overview of ground temperature As the surface coal seam is gradually mined, the mine excavation progresses to a deeper depth. The working surface and roadway in the well are increasingly affected by the geothermal heat, the rock temperature and air temperature are greatly increased, and the working environment and sanitary conditions deteriorate. Due to geological reasons, the ground temperature increased with depth, including magmatic activities and fault activities, the content of radioactive material in coal-bearing formations, and the circulation and gushing of underground hot water. In addition, there are some special geological factors. According to statistics of coal field geothermal observations in China, the ground temperature increase rate is 2 to 4°C/100m. At present, more than 40 pairs of mine excavation face temperatures exceed 30°C. Ibn El Bijren