Study On Landslide Hazard Zonation

With the development of West-China and the construction of Sanxia Project, the people's economic level improved quickly in West-China. Landslide induced by non-nature was threatening the life and belongs for wrongly field-selected and unreasonable construction in the course of construction. How to deal with the connection with the mankind and the earth in phase is the target of the government and scientist. On the base of all above the paper studied by the numbers landslide hazard zonation, and the research work involves several aspect as follows:1. The theory of landslide hazard zonation is a complex systems engineering, the paper expatiate roundly this system which include how to set up mainly factors and measurable factors and math's model and confirm the hazard degree and gain the result of hazard zonation, Contemporary the paper do exploring some research work for the develop direction.2. Subject function of systemic factors about landslide hazard zonation was set up by using Fuzzy math theory, and did best to avoid unwanted error by any wrong thing in the course of numbering factors, thereby cause standardization to number factors.3. How to decide the threshold value of hazard zonation is the keys, which can be, divide the precision of landslide hazard zonation research. The paper introduce detailed the method to decide the threshold value, and set forth the method to test the believing interborough of division result in theory.4.Appling Fuzzy math theory and factors added method we set up landslide hazard zonation math model in Kaixian county Sanxia region, and compare two hazard zonation result with these two model ,to make non-linearity theory applied successfully to realistic condition.5. Applying landslide hazard zonation theory we set up landslide hazard zonation of Kaixian County, and divided the studying area into three grades, which were highly hazard zonation and middling zonation and lowly zonation. The result can be provided to local government to instruct manufacture, and made any thing carried safety. Also during the instruction of new city zone can be avoided landslide hazard induced by unreasonable empolder, On the other hand the resultcan be used to provide reference for agriculture branch to instruct the people to work.6. The development of GIS provided landslide hazard zonation theory with technique means: GIS has powerful space simulative function and managing capably of attributively data and printing digital map that provide tools for realizing roboticized of landslide hazard zonation. Applying AI and GIS the paper studied systemically landslide hazard zonation on the base of GIS. The paper involves several innovations as follows:1 .On the base of former study work the paper research systemically factor system and the method to number these index and math model of landslide hazard zonation.2.Fuzzy math was introduced whole from numbering factor to judge synthetically into the theory of landslide hazard zonation, the result is similar to the fact. So applying the math method was successful.3.Both factor-added method and fuzzy judge method synthetically were applied to landslide hazard zonation of studying area, and the result of fuzzy math was proved by factor-added method, and the conclusion is accordant that promoted the research of landslide hazard zonation from qualitative analysis and half-quantitative analysis to quantitative analysis.