Study On GIS Visualization Damage Evaluation System For Main Environment Resources In Subsidence Area

Coal mining has gone into the "three-under" mining stage generally, along with the continuously expansion of mining strength and mining scope, the problem about environment resources damage in subsidence areas has received more and more attention, which has become one of the technical challenges that need to be solved currently. Environment resources damage evaluation in subsidence area is a job which is strong comprehensive, with large workload and high technical difficulty, the traditional manual analysis and computation have far behind the morden social development, the science and rationality of the results are difficult to be guaranteed. Along with the development and widespread application of computer technology, lots of new technologies are introduced into mining subsidence domain gradually, this thesis carries out the research work of main environment resources (buildings,land resources) damage evaluation with the aid of Geographical Information System(GIS) and Three Dimension -al Data Field Visualization.(1) Environment resources damage evaluation in subsidence area refers to many factors,and the evaluation models are various. This thesis generally analyzes the domestic and foreign theories and standards, through site investigation in subsidence area, eatablished the damage evaluation application models of main environment resources(buildings,land resources).(2) The thesis introduces GIS technology, takes ArcGIS 9 as service platform, realizes the AO quadratic integration development based on Visual Basic 6.0,establishes the special mining subsidence environment resources damage evaluation system with the evaluation models, mainly aims at the damage evaluation of buildings, building regions and land resources.(3) Mining subsidence environment resources damage evaluation system includes several functions,such as adding layers and data sheets,production of subsidence prediction deformation points Iayer,environment resources damage evaluation, connecti -on of layers and data sheets, with the aid of above functions,realize the integration of damage evaluation computation and visualization analysis inside GIS.(4) Selecting Yanzhou mining area as the evaluation study area, in view of the Baodian coal mine tenth working area's concrete geological mining conditions, evaluation system's project practical application is carried out. This system costs about 20 minutes to complete the damage evaluation of main environment resources, such as buildings, land resources,which are in the scope of 4.18km~2 in the tenth working area.Compared with the traditional evaluation anlysis methods,the system raises the working efficiency greatly.(5) The damage evaluation and analysis process is introduced in detail, and the results are compiled and analyzed, the economic compensation amount is 100956555 yuan when the four picked working faces of the tenth working area are exploited. Through the environment resources' extent of damage and amount of compensation's site example examination, the results are realized to accord with the mining area reality.The emergement of digital information age promotes "3S" technology to seep into many social domains, as the technical core of "3S", GIS has been widely used by the engineers and technicians. This thesis uses this technology to explore a new method of main environment resources damage evaluation in subsidence areas ,and develop the mining subsidence environment resources damage evaluation system based on GIS, which can raise the evaluation exercise efficiency, realize the visualization of results, solve the technical problem which is difficult for the traditional methods. In addition,the technology means applied by this thesis have been used to complete the research of science and technology project of ministry of construction and outstanding young and middle-aged scientists research reward fund financial aid project of Shandong province, Which passed appraisal in April,2009. The research results received consistent high praises of several experts, such as, academician Song Zhenqi from Chinese Academy of Sciences, experts from China Coal Research Institute, China University of Mining&Technology, Beijing, China Coal Research Institute Tangshan Branch and so on. The research technology is realized to achieve international leading level.