Strategic conceptualization and key technology for the transformation and upgrading of shut-down coal mines

While coal is dominating the energy resource of China,the proportion of coal in the primary energy consumption,with the increasing shut-down of coal mines,is decreasing in recent years due to importance of clean,green and low carbon energy. New conception and strategy on the shut-down mines need to be built beyond the old and stere-otypical thoughts along with the development of society,science and technology. We believe that the shut-down mines can not only restrain further ecological damage,but also provide precious underground space resource. The resource utilization and transition and upgrade of shut-down coal mines is not only an economic,but also a scientific concern. How we solve this problem will have a significant impact on the mining ecology,urban and rural construction and ener- gy strategy of China in the future. In this paper,we propose six principles on the scientific transformation and upgra- ding of the shut-down mines,and give emphasis on the stereoscopic and ecological development conception,the strate- gic ideation on underground space utilization,as well as the historical culture view on shut-down mines. The key tech- nologies involved in the utilization of the shut-down mines are discussed in details,including the development of un- derground ecological city,underground pumping-storage power generation,parking lots,medicine and nursing,agricul- tural cultivation,ecological landscape and scientific exploration. Industrial heritage declaration of some typical and his- torical mines will also be involved. The above strategic concepts and corresponding key technologies are expected to provide new solutions for the resources utilization and stereoscopic exploitation on the shut-down coal mines and asso- ciated transformation and upgrading in China.