At present, the coal industry presents a trend of multi-industry integration development, and the mining area is developing from a single coal production to a clean energy base with comprehensive supply of coal, electricity, oil and gas. As an important space carrier, the use of the huge underground space formed by coal mining for energy storage, carbon storage and other diversified uses become the key support for building a clean energy base. Shendong Mining Area has shown good economic and ecological effects by using goaf to build underground reservoirs, but the utilization approach is relatively simple, lacking effective connection with the coordinated development of coal and new energy and the construction of carbon neutral demonstration mining areas. In addition, the number of underground space in the whole mining area and the direction of reuse are not clear. Therefore, accurately estimated the number of underground space in the mining area , and given the direction of diversified utilization of goaf ,has the guiding significance to create a large coal base characterized by “ecological mining area, green mine and clean coal”. Based on the proportional coefficient method and the dissipation conduction model of mining space partition, this paper calculates that the current available roadway space in Shendong mining area is about 25.11 million m³, the available space of 8 pairs of mines exceeds 1 million m³. The formed goaf space is about 960 million m³, and 520 million m³ of mining space can be formed by 2030. The utilization potential of underground space in Shendong mining area is huge. Based on the prediction of the development of mining, new energy storage, carbon sequestration and others, and in combination with the scale, characteristics and needs of the underground space, it is proposed to expand towards the construction of pumped storage, compressed air energy storage, and the multiple use of goaf and coal seam sequestration CO₂, which will strongly support the construction of large comprehensive clean energy bases in northwest China.