The Application And Research About "3S" Technology In Tibet Ali Airport Engineering Geology Prospecting

Along with the implementation of Western Development Strategy step by step, the existing traffic condition of the plateau area in the west has become one of the important restriction for economical development. In order to improve the existing preliminary transportation condition of the Ali area in Tibet, promote its economy harmonious development, safeguard its social national safety, the local government plans to construct the Tibet Ali army-civilian airport. This is another important engineering construction project after the Qinghai-Tibetan Railway in China, it also has extraordinary significance and profound influence.With the fast development of "3S" technology recently, it provides powerful support for various type of engineering construction. Especially, the synthetic study on the union of "3S" technology and the engineer prospecting knowledge system, according to the request of actual project, with synchronism and advantage of the method of the information gain by RS, accuracy and the convenience of the GPS spatial orientation, the superiority of GIS on deal with the spatial data for storage, inquiry, analysis, processing, display and putting out and so on, the technology application method has been widely used in the engineering investigation projects.In view of the special question and enormous challenge in the Tibet Ali airport engineering geology investigation, this paper studied sufficiently the "3S" technical system and the newest technological development tendency, analyzed in detail the union of the "3S" technology, the engineering geology and the hydrology geology and other multidisciplinary professional knowledge in this airport engineering geology prospecting, the feasibility and advantage in help for the project constructing and decision-making. By using the "3S" technical method, we have entirely completed the engineering investigation task in the airport region, and submitted the report of the engineering exploration in time, which provided the solid safeguard for the entire airport in the future construction and the operation management. At the same time, combining predecessor's experience and own experience in engineering investigation, find out a set of method and means that based on the "3S" technology and adapted to the west plateau airport and the big-scale project construction. The author thought it is necessary for engineering prospecting to import the "3S" technology in western plateau area with terrain rugged, the transportation is inconvenient, the bad natural climatic conditions, regardless of taking into account from the time efficiency, the economic efficiency, or the social environment, all can we deeply realize the superiority and the expansibility of the "3S" technology.