Study On The Management Based On GIS And 3D Modeling Of Multiple Sources Geological Information

Effective management of various geological information required by geotechnical constructions will directly affect whether the construction is smooth going and improvement of construction effects. At the same time,3D visualization representation of information will help construction analysis and decision. For these reasons, it has certain practical value and theoretical significance to construction to study and discuss them. Some key problems of GIS management and 3D visualization representation of multiple sources geological information are discussed in this paper, which are mainly including:(1) the research of collection, analysis and integration of geological informationFor effectively managing various geological data, it is necessary to clear and sum up the content and use of geological information through discussion of basic problems.(2)geological information modeling and its implement of GIS spatial data modelThe content, relations and functions of various geological information are abstracted by using the method of information modeling. And geological information model turn to physical structure through its GIS spatial data model. It provides data preparing for GIS information management.(3)the analysis and realization of GIS management functions of geological informationGIS management functions of geological information are analyzed. And the realization of these functions is discussed through the software ArcGIS Desktop.(4)the design of 3D data structure of spatial geologic solid B-rep modelingBased on analyzing 3D data structures and the topology of geologic space, the data structure which can represent topological relationship of non manifold of geologic space and the appropriate topological operations are designed.(5)the design of interpolation recursion algorithm to build meshes of stratum interfaceThe main interpolation methods, fitting methods and subdivision methods are studied. An interpolation recursion algorithm of combining discrete smooth interpolation and Loop subdivision for building triangulation meshes of stratum interface is designed.(6)the research of the flow path and methods of geological information modeling (7)the design and application in the practical construction of geological information management and visualization system...