2016-01-212024-05-14https://scholars.lib.ntu.edu.tw/handle/123456789/660120摘要：近年來針對防砂構造物調查資料顯示，設置數年後之構造物下游經常會形成大小不一之沖刷坑，如果沖刷持續加劇，可能使得構造物基礎裸露甚至損壞。因此，本計畫擬蒐集相關研究成果或文獻，探討構造物下游沖刷坑位置、範圍及深度等特性，再利用水工試驗模型之量測結果搭配現地調查之相關數據，提出可能造成沖刷坑破壞之主要評估因子及其防治方法，成果可作為未來工程規劃設計參考之用。 以去年之研究成果為基礎，本計畫將持續蒐集沖刷坑相關文獻與案例、沖刷坑水流力學機制與理論，以及現地調查分析、修正沖刷坑室內渠槽試驗模式與消能設施設置原則與注意事項。 <br> Abstract: The recent investigation to disaster construction showed that several sized of scour hole formed downstream of aged construction even exposing foundation to damage. Hence, this project, associated with the collection of literature and research report, intends to study the location, scale and depth of scour hole as well as carry out flume experiment and field investigation to present the main factors of construction damage due to scour hole. And, the suggested mitigation measure for scour-hole formation would be taken as a reference for planning and design in the future. Based on the result of project in 2015, this project intends to collect the relative literature and damage cases of sour hole continuously and explore mechanism and theories of plunging jet, associated with carrying out field investigation to revise experimental model as well as setup principle and precaution of dissipation facility.沖刷坑防砂壩消能設施渠槽試驗scour holecheck damdissipation facilityflume experiment