Development status and progress of pumped storage in underground space of closed/abandoned mines
WEN Zhijie;JIANG Pengfei;SONG Zhenqi;LI Liping;JIANG Yujing;LIANG Tongkai
探索清洁能源发展的创新途径是实现我国“双碳”目标的重要推动力。为解决大规模可再生能源电力供应不稳定的难题,新型电力系统的提出与加速成长促进了抽水蓄能电站的建设与发展,但生态保护与地形等因素制约了传统抽水蓄能电站发展。关闭/废弃矿井,由于具有丰富的地下空间及水资源,可创新性地开发抽水蓄能并延长矿区的经济寿命,降低对环境与经济的负面影响。为助力建立适合我国国情的废弃矿井抽水蓄能利用模式和管理体系,通过文献分析法综述了国内外废弃矿井抽水蓄能技术研究与应用进展。详细阐述了关闭/废弃矿井抽水蓄能技术原理、分类及其优缺点;总结了关闭/废弃矿井抽水蓄能电站利用模式,并在前人研究基础上对选址要素进行了修订;梳理了关闭/废弃矿井改建抽水蓄能电站的水−气两相流动特性、水泵水轮机工况特性、地下空间围岩稳定性及地下蓄水空间体积测算等的研究现状,明确了水泵−水轮机关键技术、地下空间稳定性控制关键技术等亟待解决的技术难题。此外,对关闭/废弃矿井抽水蓄能相关的生态与环境保护、市场需求与经济效益、政策与法规等研究成果进行了广泛的文献综述。发展关闭/废弃矿井地下空间抽水蓄能技术可为我国井下空间资源利用提供思路,为保障国家能源安全与经济社会高质量发展提供新途径。
Innovative approaches to the development of clean energy are seen as a significant driving force for achieving China’s “dual carbon” goals. To address the challenge of unstable electricity supply from large-scale renewable energy, the construction and development of pumped storage power plants have been promoted through the proposal and rapid growth of new power systems. However, some traditional pumped storage power plants have been constrained by factors such as ecological protection and terrain. On the other hand, a unique solution is provided by repurposing or closing abandoned mines. Due to their abundant water and space resources, closed/abandoned mines can be innovatively developed for pumped storage energy, thereby extending the economic lifespan of mining areas and reducing negative impacts on the environment and economy. The technological advancements and application progress of abandoned mine pumped storage energy technology, both domestically and internationally, are comprehensively reviewed in this study through literature analysis, aiming to establish suitable utilization models and management systems for abandoned mine pumped storage energy in line with China’s national conditions. Detailed explanations of the principles, classifications, advantages, and disadvantages of closed/abandoned mine pumped storage energy technology are provided. The utilization models of closed/abandoned mine pumped storage power stations are summarized, and the site selection factors are revised based on previous research. Additionally, the current research status of two-phase flow characteristics in pumped storage power stations, water pump-turbine operating conditions, stability of surrounding rock in underground spaces, and calculation of underground water storage space volume are reviewed. Key technical challenges that urgently need to be addressed, such as pump-turbine technology and control of underground space stability, are identified. Furthermore, an extensive literature review is conducted on the ecological and environmental protection, market demand and economic benefits, and policies and regulations related to closed/abandoned mine pumped storage. The development of closed/abandoned mine underground space pumped storage technology can provide some insights into the utilization of underground space resources in China and offer new pathways for ensuring national energy security and high-quality socio-economic development.
closed/abandoned mines;pumped storage;clean energy;underground space;mining area management
主办单位:煤炭科学研究总院有限公司 中国煤炭学会学术期刊工作委员会