Research On Early Warning Information System Based On Gis Mining Surface Subsidence

With the exploitation of mineral resources, the expanding underground goaf causes mining subsidence. It brings great impact on people’s lives and property, and the mining area ecological environment. It also brings the inevitable result of the economic losses of the mine, and is not conducive to the sustainable development of mining area. The surface subsidence is threatening the production safety, restricting the rapid development of the local economy. Therefore the development of mine subsidence early warning information system research has important theoretical and practical significance for the subsidence disaster prevention, the protection of the local people’s property and personal safety, promoting the harmonious development of man and nature, and guiding the mine safety production of green.This paper focuses on the current shortage of surface subsidence and early warning system of existence, and carries on improvement and research of probability integral prediction model and warning model. According to the need of subsidence model, it deduces and improves the subsidence parameter and index calculation formula. In this paper, the iron ore in Anhui Province bases on spatial data and attribute data as data base, to develop the mining subsidence and early warning system, the main work is as follows:(1) According to mine data and actual situation at present, in order to ask the the mine managers use management and graphic file’s compatibility for convenient. This paper chooses Map X as the development platform, VB as development environment for system development.(2) This paper improves and researches the probability integration model and the early warning model of subsidence, and deduces the calculation formula of subsidence, horizontal movement and subsidence calculation formula of deviation formula. It develops the warning interval deviation degree according to iron mine safety regulations and the actual situation of the mine.(3) According to the actual needs of mine, this paper has carried on the system overall design, and included five parts, the database, map drawing, graphic editing, graphic display and query and surface subsidence and early warning.(4) The system designs database, and establishes the iron mines of spatial database and attribute database, and realizes the attribute data and spatial data visualization batch input andediting work, improve the efficiency and accuracy of data entry. Both mutual query by ID code and attribute. Querying and analyzing the surface subsidence information for the users becomes very convenience.(5) Development and application of the system shows that it can be directly output subsidence cure,sloping curve,curvature curve,horizontal movement curve,horizontalmovement and deformation curve. Visualization shows the changes of mine surface monitoring and implementation of early warning on surface subsidence.