本文針對目前城市泥石流災害的突出問題，分析了國內外研究狀況和發展趨 勢；以中國昆明市東川城區為研究區，探討了城市泥石流災害綜合評價的系統方 法，包括了泥石流危險區劃、城市易損性分析、城市泥石流災害損失評估和城市 泥石流風險評價四個主要內容。泥石流危險區劃採用數值仿真方法完成；以高解 析度遙感衛星影像為資料源，為城市土地覆蓋類型分析提供了重要依據，在此基 礎上分析城市泥石流災害易損度，應用GIS 提供的統計和分析工具進行泥石流災 害損失評估和風險評價。泥石流災害綜合評價可用於指導對城市洪氾區的不同危 險、風險地帶的土地利用進行規劃和決策，從而達到規避和減災的目的，也為生 活在泥石流災害影響區的城市居民提供災害風險資訊，以作為避難和防災的依 據。

This paper focus on the problems of urban debris flow hazard in the recent years and reviews the current study status and future research work about assessment of urban debris flow hazard. A case study is selected in Dongchuan Urban Area, a district of the Kunming City in China, and an integrated methodology for urban debris flow risk assessment is approached. Procedure of the methodology involves debris flow hazard zonation in the alluvial area, urban vulnerability analysis, loss evaluation and risk assessment. Debris flow hazard zonation on the alluvial fan is created by the numerical simulation method associated with geomorphologic method. Detailed land cover information is derived using the high spatial resolution satellite imagery and then we evaluate the vulnerability value to different land-use features. Based on a GIS statistical and analytical tool, debris flow potential damage and risk for urban area is evaluated. This assessment can be used for debris flow mitigation by identifying hazard prone areas allowing for avoidance through zoning or other land use policy decision. In addition, residents who live in debris flow prone areas need risk information for evacuation and hazard prevention