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http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/29773| Title: | 防砂壩下游水流沖擊力與局部沖刷現象之探討 The Impact Force and Local Scouring of Over-fall Flow at Downstream Area of Check Dam |
| Authors: | Chia-Yu Chen 陳佳裕 |
| Advisor: | 黃宏斌 |
| Keyword: | 防砂壩,跌水,水流沖擊力,沖刷,跌水位置, check dam,over-fall flow,impact force of water scouring,location of over-fall flow, |
| Publication Year : | 2007 |
| Degree: | 碩士 |
| Abstract: | 構築防砂壩、潛壩所造成的高差會對下游渠床造成沖擊，進一步有危害壩體安全之可能，關於局部沖刷之研究已有多位學進行研究。本研究目的為透過水槽試驗使用具有束縮之模型壩，針對4種不同跌水高，以兩種渠床粒徑，變換不同流量探討清水流過壩對下游渠床之沖擊力、沖刷坑深、水流沖擊位置與沖刷前後能量消減等物理特性，並與前人之模式互相比較其異同。 The height from top of check dam to bed of river, makes water impacting bed of river. And further, it endangers the safety of structure possibly. There have been many theses about local scouring. This research uses model of check dam with four kinds of height, and two kinds of mix grain, and several kinds of discharge of flow to confer impact force of over-fall flow and, depth of scour hole, and the location where water drops, and the reduce of energy by scouring. And compare with the formulas of former literature. |
| URI: | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/29773 |
| Fulltext Rights: | 有償授權 |
| Appears in Collections: | 生物環境系統工程學系 |
Files in This Item:
| File | Size | Format | |
|---|---|---|---|
| ntu-96-1.pdf Restricted Access | 3.63 MB | Adobe PDF |
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