再论废弃矿井利用面临的科学问题与对策

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

  • 摘要: 在经济发展新常态和供给侧改革背景下,关闭/废弃矿井数量逐年增多,仍遗留大量可开发利用资源,开展关闭/废弃矿井资源开发利用意义重大。目前,相关研究工作仍相对滞后,难以系统解决遗留能源资源及地下空间开发利用等方面存在的科学问题和技术瓶颈。基于山西省关闭/废弃矿井资源禀赋与开发现状分析,结合关闭/废弃矿井遗留煤炭地下气化、遗留煤层气地面抽采、地下空间储能储物等重大需求,亟需研究关闭/废弃矿井能源资源协同综合利用评价方法、固-液-气及应力-位移-渗流-温度等多相多场动态演化机制、复杂遗留空间煤层气运移规律与储集成藏机理、复杂岩体多场耦合作用机理及稳定性控制等四个关键科学问题,攻克关闭/废弃矿井能源资源协同利用安全与风险评价技术、遗留煤炭地下气化炉构建及气化工艺、遗留煤层气资源地面抽采与利用、地下储库(储水、储油、储气等)库容探测与防渗等四项关键核心技术。基于矿井全生命周期绿色利用科学理念,以白家庄煤矿为例,提出了山西省关闭/废弃矿井遗留资源和空间资源“能源化、资源化、功能化”协同利用综合性解决方案,创新了“政产学研用金”协同机制为基础的关闭/废弃矿井能源资源精准开发与利用新模式。

     

    Abstract: 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”.

     

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