利用充填巷道作矿井降温热汇的可行性研究  

Feasibility Study on Using Filling Roadway as Mine Cooling Heat Sink

作　　者：赵杰 金开玥 裴鹏 唐龙 ZHAO Jie;JIN Kaiyue;PEI Peng;TANG Long(College of Mines,Guizhou University,Guiyang,Guizhou 550025,China;School of Mines,China University of Mining and Technology,Xuzhou,Jiangsu 221116,China)

机构地区：[1]贵州大学矿业学院,贵州贵阳550025 [2]中国矿业大学矿业工程学院,江苏徐州市221116

出　　处：《矿业研究与开发》2025年第2期213-225,共13页Mining Research and Development

基　　金：贵州省科技支撑计划项目(黔科合支撑[2022]一般232)。

摘　　要：随着矿井深度的增加,热害愈加明显,仅通过优化通风的方式难以满足深部矿井的降温需求。利用制冷循环对矿井降温的关键是选择合理的热汇(冷源)。以贵州某金矿矿井热害治理需求为背景,基于能源隧道的概念,提出将充填后的废弃巷道作为冷源接收从新风入口或井下工作面转移的热量,从而达到对井下空间降温的目的。测量了废弃巷道充填材料和围岩的热物性参数,并建立了废弃巷道冷源模型。模拟了20 a时长的运行,得到了两种的运行模式和三种换热管布局场景下的出口水温、换热功率和系统能效。研究表明:仅通过增加换热管数量,并不能明显地提升技术经济指标;间歇运行模式可以缓解热汇的热堆积,并提高单位管长换热强度,有利于系统的长期稳定运行。根据工作面冷负荷设置了报废功率阈值,计算了服务年限内热汇的蓄热总量,并结合单位管长换热强度,对比评价了不同应用场景的可行性。研究结果对废弃矿井空间再利用以及井下热害治理提供了一种新的思路。With the increase of mine depth,the heat damage becomes more and more obvious.It is difficult to meet the cooling demand of deep mines only by optimizing ventilation.The key to mine cooling by using refrigeration cycle is to choose a reasonable heat sink(cold source).Taking the demand of heat damage control in a gold mine in Guizhou as the background,based on the concept of energy tunnel,it was proposed to use the filled abandoned roadway as a cold source to receive the heat transferred from the fresh air inlet or the underground working face,so as to achieve the purpose of cooling the underground space.The thermal physical parameters of filling materials of abandoned roadway and surrounding rock were measured,and the cold source model of abandoned roadway was established.The 20-year operation was simulated,and the outlet water temperature,heat transfer power and system energy efficiency under two operating modes and three heat exchange tube layout scenarios were obtained.The results show that only by increasing the number of heat exchange tubes,the technical and economic indicators cannot be significantly improved.The intermittent operation mode can alleviate the heat accumulation of the heat sink and improve the heat transfer intensity of per unit tube length,which is conducive to the long-term stable operation of the system.According to the cooling load of the working face,the scrap power threshold is set,and the total heat storage of the heat sink within the service life is calculated.Combined with the heat transfer intensity of per unit tube length,the feasibility of different application scenarios are compared and evaluated.The research results provide a new idea for the reuse of abandoned mine space and the treatment of underground heat damage.

关 键 词：矿井热害 废弃充填巷道 换热功率 数值模拟 

分 类 号：TD727.2[矿业工程—矿井通风与安全]