Design And Realization Of Tianshan Highway Geo-hazard Evaluation And Decision Support System

Tianshan highway is an important constituents of the national highway 217, spanning 532km, and open to traffic in September, 1983. For several dozens of years, as a result of the special geography and the climatic conditions influence, the snow, the flood damage, the avalanche, the Debris flow, the frozen earth and so on are all here and form serious threat to the traffic of Tianshan highway.After analyzing the theory of geological hazard about Tianshan highway in detail, this system collected the datum of basic geography and geology along the highway in the past, and also contrasted the locale results and images, integrated GIS, spatial database and the process of remote sensing images, built and consummated both the Geography database and the geological hazard database basing on the platform of ArcGIS after according synthesizing, coordinating, choosing, concluding and changing by the rules of database, and basing on the ArcEngine platform, developed a set of foundations of data gathering, storage, management, retrieval, graphic editor, space model analysis, the region fatalness evaluation as well as the decision support, which is named "the Tianshan highway geo-hazard fatalness evaluation and decision support system" and realized the functions of management,querying,analyzing about spatial database, meanwhile, provided a operation platform for the Tianshan highway geo-hazard fatalness evaluation and decision support by integrating the geological hazard forecast and prevention professor database. The following are the features of this paper:(1) This system adopts seamless developing style, reforms and integrates the functions of ArcGIS through quadratic developing components of ArcEngine, making it as a geo-hazard evaluation and decision support system which faces application and operates flexibly. ArcEngine is born of ArcObjects, but has stronger and absoluter developing ability, so able to break away form the software environment of ArcGIS.(2) The integration of Multi-source spatial data. This system realizes the multi-source data integration from the data format conversion, coordinate system and projection conversion, and transforms each kind data to SQL Server database utilizing the spatial data engine of ArcSDE, actualizing version control and long transaction management.(3) Combination the powerful spatial analysis of GIS and mathematical models. GIS technology runs through the every tache of the acquirement of evaluation data, calculation and expression of the results, which provide scientific mathematical methods for geo-hazard evaluation and decision.(4) This research carries out the geological disaster hazard evaluation and gets the hazard level of the whole region and single point, which makes the two sides combined organically. Meanwhile, through the database design of models, methods, knowledge and data, supplying decision basis for the further research of geological disease of Tianshan highway.