Further discussion on the scientific problems and countermeasures in the utilization of abandoned mines

Under the background of the new normal of economic development and supply side reform,the number of closed/abandoned mines has increased year by year,leaving a large number of exploitable resources.It is of great significance to carry out the development and utilization of closed/abandoned mine resources.At present,the related research work is still relatively backward,and it is difficult to systematically solve the scientific problems and technical bottlenecks in the development and utilization of the remaining energy resources and underground space.Based on the analysis of resource endowment and development status of closed/abandoned mines in Shanxi Province,combined with the major needs of underground coal gasification,surface extraction of coalbed methane and underground space energy storage,it is urgent to study the evaluation method of collaborative comprehensive utilization of energy resources in closed/abandoned mines,the multi phase and multi field dynamic evolution mechanism of solid liquid gas and stress displacement seepage temperature four key scientific issues,including the movement law and reservoir integration mechanism of coalbed methane in complex remaining space,multi field coupling mechanism of complex rock mass and stability control,were solved,including safety and risk assessment technology for collaborative utilization of energy resources in closed/abandoned mines,construction and gasification process of underground gasifier for remaining coal,surface pumping and utilization of remaining coalbed methane resources,and underground storage (water and gas storage) There are four key core technologies:oil and gas storage capacity detection and anti seepage.Based on the scientific concept of green utilization in the whole life cycle of mines,taking Baijiazhuang Coal Mine as an example,this paper puts forward a comprehensive solution for the collaborative utilization of the remaining resources and space resources of closed/abandoned mines in Shanxi Province,and innovates a new mode of accurate development and utilization of energy resources of closed/abandoned mines based on the collaborative mechanism of “government industry university research user fund”.