Research On Coordination And Optimal Allocation Of Coal-Land-Water Of Kun Da Mining Area In Jin Cheng

Coal-water coupling analysis plays an important supporting role in regional social,economic,and ecological development.In coal mining areas,mining activities have a certain impact on the regional water and soil resources,interfere with the coordination of regional water and land resources,and thus threaten the sustainable development of the regional economy,societyand ecology.Therefore,the paper takes the KunDa mining area in Jin Cheng of Shanxi Province as the research object and conducts empirical research.The coupling mechanism of the composite system was analyzed,a coupling coordination model was established and the degree of coupling was calculate,the coordination of the regional coal water and water composite system was analyzed.Thus,the main disturbance factor that leads to the low coupling degree of the composite system was obtained.In addition,the main disturbance factor was set as a constraint condition and land use optimization in Kun Da Mining Area was obtained through Multi-objective Planning Model.The main research contents were as follows:(1)The paper clarified the research approach by reviewing relevant researches on regional coal-water-land coordination and impacts on water-land resources caused by coal exploitation activities.(2)The coupling mechanism of composite systems,and the coupling mechanism of coal,water,and land under rational mining and irrational exploitation was analyzed.(3)Based on the existing research,an evaluation index system was established,a coupling coordination model was established,and the comprehensive evaluation index of each subsystem and the coupling degree of the composite system were calculated.(4)Through the comparison of horizontal and vertical directions,the reasons for the incompatibility of the composite system in the area was analyzed,and the principal component analysis method was used to determine the subsystems and main disturbance factors that lead to low coupling degree of the composite system.(5)The main disturbance factor was set as one of the objective functions to establish a multi-objective optimization model,so as to obtain the optimization scheme of the composite system.The paper reached the following conclusions:(1)Mining of coal resources restricts water and land resources,while water resources and land resources affect the exploitation of coal resources;water and land resources interact,that is,they can promote each other and can also restrict each other.(2)Coal mining activity is a kind of human labor that produces positive and negative values.When the coupling of the composite system is low,it shows that the economic benefits brought by coal mining cannot make up for the ecological and social benefits.(3)The coupling degree of the composite system in the study area was relatively low,resulting in the subsystem with low degree of coupling of the system as the land resource subsystem,so the degree of coupling of the coal-water composite system could be improved from the land resources.(4)The major disturbance factor of the coal-to-land water composite system in the Kun Da mining area was the area of water resources.The area of water resources was used as an objective function to re-plan regional land use.This idea can provide new ideas for regional planning.(5)The economic benefits,social benefits and ecological benefits generated by the optimization scheme of this paper have been improved to a certain extent,indicating that the optimization scheme is feasible and the multi-objective planning has certain significance in the application of land-use optimization configuration.