摘要
为了解决传统垮落法开采形成的采空区空间结构极不稳定所导致的井下空间开发利用率低的难题,基于充填维护地下空间稳定性特征,构建了充填开采协同地下空间利用的井下采空区储能式充填模式,提出了煤矿储能式充填空间热能储存与提取的系统构成与布局方式,阐释了煤矿储能式充填的技术原理与技术关键,给出了储能式充填空间热能储存与提取效果主控因素,通过数值与理论分析得到了充填材料热物性能、管路布置及载热流体对储能效果的影响规律,揭示了煤矿采空区储能式充填储能增效机制,为实现热能地下高效储存与煤矿井下空间高效利用奠定了基础。
Based on the maintenance of stability of underground space filling characteristics,the energystored backfilling technology model of backfilling mining and underground space utilization was proposed to solve the problem of low utilization rate of underground space development caused by the unstable structure of goaf formed by traditional caving mining. Then,the system constitution and layout of thermal energy storage and extraction in energy-stored functional backfilling space were introduced.By systematically elaborating the technical principle and key technologies in energy-stored functional backfilling method,the most influencing parameters on energy injection and extraction performances in underground backfilling space were derived,and their effects on energy injection and extraction performances were analyzed respectively to reveal the energy storage efficiency enhancement mechanism. The study of energy-stored functional backfilling technology will lay the foundation for efficient underground thermal energy storage and underground space utilization in coal mines.
作者
李百宜
张吉雄
刘恒凤
周楠
闫浩
李猛
LI Baiyi;ZHANG Jixiong;LIU Hengfeng;ZHOU Nan;YAN Hao;LI Meng(State Key Laboratory for Geomechanics and Deep Underground Engineering,China University of Mining and Technology,Xuzhou,Jiangsu 221116,China;School of Mines,China University of Mining and Technology,Xuzhou,Jiangsu 221116,China;State Key Laboratory of Coal Resources and Safe Mining,China University of Mining and Technology,Xuzhou,Jiangsuu221116,China)
出处
《采矿与安全工程学报》
EI
CSCD
北大核心
2022年第6期1161-1168,1176,共9页
Journal of Mining & Safety Engineering
基金
国家自然科学基金项目(52104151)。
关键词
充填开采
地下空间利用
储能
热传导
储能层位
backfill mining
underground space utilization
energy storage
heat conduction
rock stratigraphy
