Study On The Coupling Relationship Of Coal Mining Value And Land Use Value Based On System Dynamics

In light of coal source value evaluation, land utilization evaluation, related theories and approaches, with the application of basic principles of system dynamics and method of Multi-objective Decision, this dissertation reports an intensive research into the system of surface miner in terms of investigation, theoretical analysis and engineering practice. The findings of this research work are as follows:(1) This thesis analyzed as well as summarized the evaluation system and evaluation methods of coal exploitation value and land utilization value, and raised the improved evaluation way of mine area land utilization value. Based on the analysis of the value structure and concept of coal resource development value and land utilization value, the author researched the changing trends of the influence factors of land utilization in coal development. At the same time, the author discussed the evaluation methods of mine area land utilization value, and summarized the characteristics of mine area land utilization value.(2) Coal development and land utilization have an interactional relationship. This thesis analyzed coal exploitation value and land utilization value theoretically. Coal development has an influence to the land utilization, and this relationship is expressed in the factors of land pressure, land sinks and environmental pollution. This thesis took land sinks as the major research object, analyzing the interactional affecting relationship deeply, and the coupling mechanism of these two resource's utilization value, on the basis of which the author drew a chart of coupling mechanism.(3) The thesis studied the coupled relation between coal exploitation value and land utilization value. And it derived the mathematical expression that indicated the maximum comprehensive value of mine-land integration exploitation. Based on the coupling mechanism between coal exploitation value and land utilization value, the thesis researched the coupled relation and discipline of the two values. And it derived T_max, a judgment formula of the optimization exploitation value from the mathematical expression, and the technical methods of optimal mining rate a can be got.(4) The paper created system dynamic models of the coal exploitation value and land utilization value. The coal exploitation value can be regarded as a whole system by using the theory and method of the system dynamic model. And this system should comprise the economic value subsystem, social value subsystem and ecological value subsystem through integrating the value of nature, labor, environment and society. According to that theory and method, the land utilization value can also be composed of three subsystems including economic value subsystem, social value subsystem and ecological value subsystem. And SD models of coal exploitation value and land utilization value can be drawn by Vensim, a kind of system dynamics software.(5) Suitable mining rate a can be obtained by the demonstration with the example of Qishan coal mine in Xuzhou city. Starting with the production and combined with the actual condition of the Qishan coal mine, the thesis analyzed the changes of the coal exploitation value and land utilization value under various mining rates of the recoverable reserve such as 100%, 90%, 80%, 70%, 60%. And it came to a conclusion that the maximum comprehensive value of mine-land integration exploitation can be reached at 90% mining rate.