The Influence Of Coal Mining Method On Land Use Pattern In Subsidence Area

Land destruction and environmental disruption caused by coal mining are common in China.Accordingly,the research on land use in subsidence area is the most crucial hotspot issue during coal resource exploitation.Generally,subsidence area reclamation follows the pattern of “treatment after destruction”,land reuse in subsidence area confronts uncertainty because of unclear underground mining condition and failure characteristic of overlying strata.Hence,conducting the research about the influence of coal mining method on reclamation pattern in subsidence area is of scientific and engineering significance for better and more productive land use.Based on the investigation of treatment for coal mining subsidence area at home and abroad,this thesis analyzed land use methods,current condition and development direction in detail,put forward the land use pattern in subsidence area after discussing the failure mechanism of land,and studied its basic features and influencing factors further.Taking panel 2300 of one mine as an example,three typical mining schemes of total extraction,partial extraction and backfilling mining were built to compare the surface deformation law of different mining methods by predicting deformation using probability integration method,and the basic features of different mining methods was also raised.With the analysis of land use feasibility evaluation for subsidence area,we established the planning system for land use in subsidence area based on mining method.Moreover,the corresponding relation between surface movement feature and land use was built with the consideration of constraint condition from external environment,and the optimum land use pattern for panel 2300 was proposed with different coal mining methods.The research results can provide reference for treatment pattern in coal mining subsidence area and guide the selection of specific plan.Meanwhile,by using the feedback mechanism of planning system,the mining method selection and technological scheme can also be directed to meet the harmonious unification of coal mining and surface land use by taking into the land planning.