The application of the information system of visualized strata model to the research of land subsidence in Suzhou-Wuxi-Changzhou area

Land subsidence caused by excessive exploitation of groundwater , has occurred in many cities of our country and thereout leads to great environmental problem and economy loss. The problems of forecast and control of land subsidence must be solved in these cites . Based on the mechanism of land subsidence ,the information system of 3D visualized model for Quaternary strata is constructed on the GMS platform .The system can intuitively and veritably show the spatial outspread shape and spatial combination feature of strata with different properties .Also, the following information such as the strata separation and combination, cut and display of sections, section at the appointed depth, observation of the strata in different visual angle, can be handily displayed by the three dimensional visualized strata model. The strata model can provide valuable information and favorable conditions for the research of land subsidence.