The Applicatin Of The Tendency Analysis Method In The Geology Disaster Danger

Recently, as the development of social economic and the excessively exploiting to the resources and environment, the damage to geology environment more and more serious and the geology disaster more often happen. It had threatened the beings survival and development and caused enormous losses to people's production and living and became one of the natural disasters that restrict the social economic developing. Along with the prevention of geologic investigation of disaster has launched spread all over the nation. How to program the dangerous of geologic disaster according to the survey result becomes the difficult problem in the work. This thesis bases on Geographic Information System (GIS) and applies the tendency analysis to discuss and explore how to divide district of geologic disaster danger's level.GIS processes powerful function which can handle data and analyze space, and which is one of the ordinary tools in investigation and dividing district of geologic disasters. But, only depend on GIS is difficult to deal with the geologic disaster's level quantitatively. Consequently the thesis lead the tendency analysis method to the divided district of geologic disaster danger assessment, and discuss the method that how to divide the geologic disaster danger district base on the GIS. It provides a new theoretical method that deals with the geologic disaster investigation and divided district project.According to geo-environment characteristic, summary up predecessor's experience, the paper has set up the level of geologic disaster danger district assessment and established classifying standard of index. After that, the paper analyses systematically quantifying method of evaluation factors and applies the hierarchy analysis to deter the factors' weight. The tendency analysis method theory is introduced comprehensively, and its process is writing with the MATLAB software. Based on the development platform of MAPGIS6.5, the spatial graph database is established, the actual material map be draw. By deal with the data under the tendency analysis process of MATLAB and produce the map atomically for achieving the divided district of geology disaster danger.The thesis takes Jiang county of Shanxi province district's investigation of geologic disaster project, analyzes its geology environment background, chooses the main factors influencing geology disaster and establishes the spatial graph database and property database of Jiang county district's geologic disasters. Based on this tendency analysis method, the level of frequent happening district is assessed, and the result shows that the level of frequent geologic disaster is classified four classes: high district, moderate district, low district and not grow less district. And then contrast to the result of harassment coefficient. So it further indicates that the method is feasible and very practical .