The Research of Landslide Susceptibility Mapping by Integration of the Delphi Method and Analytic Hierarchy Process

• Main Authors: Cheng-Hung Huang, 黃政鴻
• Other Authors: Wen-Fu Chen
• Format: Others
• Language: zh-TW
• Published: 2012
• Online Access: http://ndltd.ncl.edu.tw/handle/20730752059255370945

碩士 === 國立中興大學 === 水土保持學系所 === 100 === In Taiwan, the landform is highly; precipitously and belong young geological that is why the geological fragile. Then belongs to the monsoon climate zone, resulting in steep terrain, fragile geology, typhoons often along with a heavy rainfall, leading to the phenomenon of often landslides, land slide, debris flow. Densely populated condition cause to Serious hillside disasters. After the 921 earthquake Taiwan hillside showing loose and fragile. There are a lot of hillside disasters which are caused by extreme storm in recent years in Taiwan. The majority of the hillside disasters in Taiwan are falling rocks, strata slip, mudflows, landslides and creep. The extreme storm and earthquakes endanger the life and property of the people who are protected by the government. The stability of hillsides depends on geomaterials and terrain condition. And the induction factors of collapse and landslide are rainfall and over capacity use of slope land and so on. This study are mainly research on Analysis of the regional mountain landslide susceptibility. The study area was located Chen Yu Lan River of Fong-Ciou region. For landslide susceptibility in Fong-Ciou region Compile the relevant literature and integration of the Modified Delphi method and Analytical Hierarchy Process as a research method. The impact factor of the landslide include potential factor, topography factor, induced factor, location factor, fourth factor and made to repair the design of the questionnaire of the Modified Delphi Method. Further to establish Characteristics of landslide susceptibility assessment criteria table Expert questionnaire seeking to take out a comprehensive assessment of landslide susceptibility index. And further use of the Analytic Hierarchy Process (AHP) to analyze calculate the landslide impact factor weight values as basis for the assessment. Combination of aerial images produced by digital elevation model (DEM) use GIS Analytic Hierarchy Process (AHP) to make the weight value the overlay Fong-Ciou region layer information. Export data in Fong-Ciou region landslide susceptibility map. Landslide susceptibility map drawn out by the Institute in accordance with the dangerous landslide susceptibility, Divided into low susceptibility, susceptibility region of high susceptibility, high susceptibility region. This area of partition as a measure of the current status of the stability and extent of the Fong-Ciou region. And to estimate the present stability of hillsides as ways for references in the future.