the Spatial Database for Mining Area's Geological Environment Evaluation System of Sichuan Province adopts object-oriented Geo-database geographical data model and stores all the spatial data in the relational database Oracle 9i through ArcSDE spatial data engine connection.
The author also tests on the soil in certain diggings in Gejiu area, Yunnan Province,gets geological environment evaluation by this technique, and provides scientific and reasonable methods for the harnessing of the mine exploration.
This paper briefly introduces the significance of highway's geologic environment evaluation, and taking Xichang-Panzhihua Superhighway as the example, probes into the evaluating method and the GIS technological route, puts forward a set of index system and classification system used for the geologic environment evaluation, and establishes a multilayer fuzzy mathematical comprehensive evaluation model.
This paper,using the region geologic environment characteristic, puts for ward a set of criterion for geologic evaluation. Based on GIS platform, it sets up graphical display of highway geologic environment evaluation.
Geological environment assessment was disintegrated for three steps. The first step is element assessment, using necessary elements such as Cu, Zn, Se, Mn and the harmful ones such as Pb, Cd, Hg, As, etc.
The four assessment information characteristics of engineering geological environment are summarized,then a GIS-based engineering geological environment assessment system workflow is established,which consists of four parts,i. e. Multi-source data system,GIS management system,GIS-based assessment system of engineering geological environment,risk assessment and prevention decision system of engineering geological hazards.