Coal is the main energy source in China,and the western region in China is the main coal production area.The protection and utilization of coal mine water is the major technical challenge in the coal mining.The coal green mining re-search team of China Energy Group has pioneered the technology of underground coal mine reservoirs,which has been widely implemented in the Shendong mining area in Western China,providing over 95%of water needed for mining and ensuring the sustainable development of the mining area.To further enrich and improve the theoretical and technical sys-tem of underground coal mine reservoirs,this technology has been promoted and applied under different geological and working conditions in the western coal mining areas to ensure national energy security and water resources protection.The research team has built the original technology experimental platform system for coal mine underground reservoirs,in-cluding the comprehensive intelligent experimental platform for underground water transport and protection,the physical modelling platform for coal mine underground reservoirs under multiple coal seams,the dam structure experimental plat-form for coal mine underground reservoirs,the simulation experimental platform for deep well construction in western areas,the water-rock coupling mechanism experimental platform for underground water reservoirs,the integrated water treatment process experimental platform,and the impact experimental platforms for coal mine underground reservoirs,etc.On these platforms,the researches can be carried out consisting of the transport law of underground water,the optimiza-tion of dam structure parameters,the safety and stability of reservoirs,water-rock coupling mechanism,the optimization of mine water treatment,and the impact of caving rock mass on the dam structure under different coal seam occurrence con-ditions in the western mining areas of China.These platform systems provide a theoretical support and technical verifica-tion for the construction,operation,and safety of coal mine underground reservoirs.By utilizing these experimental plat-forms,various experimental research studies have been conducted,including the stability and seepage of coal mine under-ground reservoirs under multiple coal seams,the structural safety of coal mine underground reservoirs dam,and the water-rock coupling mechanism of coal mine underground reservoirs.These research results have been applied in actual engin-eering practice to ensure the safe and stable operation of coal mine underground reservoirs.
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