Research And Implementation Of Forecast Systemof Deformation OftheEarth's Surface In Three-underground Mining

Surface subsidence caused by coal mining has impact on the ecological environment andproduction and life of the people in mining areas. It also causes serious economic losses andseriously restricts the sustainable development of mining areas. Having a correct subsidenceforecast before mining can reduce losses caused by mining subsidence and adjust the miningplan or reduce losses by taking appropriate measures. So forecast of the earth's surface has agreat theoretical and practical significance.On studying the theory of surface subsidence and problems and deficiencies in existingsystems and based on the modal of probability integration method, this essay discusses andimplements auto computing angle of coal,division arbitrary sharp work face, grid forecastregion, inversion work face and visualization of input and output. This studying providestechnical support for the system. During design and development process, takingobject-oriented development methodology as the guide, the overall and detailed design wascarried out and surface subsidence database was established using Access.The system can forecast arbitrary shape work face by using work face division method,auto calculate and save forecast parameters of work face based on mining, develop anindependent module of input visualization by using CGIS platform, achieve result ofcalculating visualization by studying the Automation technology of Surfer. It can auto drawcontour, vectorgraph, face map. The inversion work face can aid work face design by usingresult of subsidence forecast. Achieve a number of data transmissions between subsystemsseamlessly by using the database as a data exchange.This essay describes the components and functions of the system and gives a detailinstruction about design, module of forecast, implements of key technologies algorithm andmethod of input and output, and gives an example of application at last. The example showsthat it is easy to operate, high-precision results of forecast is the feature of the system. The system functions meet the design requirements.