为了改善永川煤矿井下采掘工作面的热环境,从理论分析、方案比较及初步设计角度进行阐述,提出矿井热环境治理的方法和思路。首先,基于对永川煤矿采掘工作面热环境参数的实测与分析,评价矿井的热害程度;其次,对井下各种热源的热释放规律及散热量进行了分析和计算,得出矿井热环境的主要影响因素;再次,根据模拟巷道法进行计算,确定了矿井通风降温的极限可采深度,从而得出了以人工制冷降温为主、通风等措施为辅,综合治理矿井热环境的结论;最后,计算了采掘工作面需冷量及管道的冷量损失,从而得出矿井空调系统需冷量,并根据永川煤矿井下布局,提出了几种降温方案,通过比较分析,确定采用区域集中制冷降温系统分别解决南北两翼的热害问题。

In order to improve the heat environment of the underground mining and excavation warking faces in Yongchuan Mine, the paper stated the theoretical a nalysis, the plan comparison and the preliminary design and provided the method and conception of the mine heat environment control.Firstly, based on the site measur ement and analysis on the heat environment of the mining and excavation working faces in Yongchuan Mine, the heat disaster degree was evaluated.Secondly, the pap er had the analysis and calculation on the thermal emission law and heat radiation value of each thermal source and the main influence factors of the mine heat environ ment were obtained.Thirdly, according to the calculation of the simulated mine roadway method, the limited mineable depth with the mine ventilation and cooling could b e determined and thus the comprehensive control conclusion of the mine heat environment with the artificial refrigeration and cooling as the main measure and the mine ventilation and other measures as the auxiliary measures could be obtained.Finally, the paper calculated the cooling quantity required for the mining and excavation fac es and the cooling quantity lost of the pipeline. Therefore, the cooling quantity required for the mine air condition system and the mining and excavation face was obtain ed.According to the layout in the underground mine of Yongchuan Mine, several cooling plans were provided. With the comparison analysis, the regional centralized refri geration and cooling system was applied to solve the heat disaster problems of the north and south wings of the mine.