Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/13476
標題: 地理資訊系統與合理化公式之結合應用
The Application of GIS and Rational Formula
作者: 林忠育
Lin, Zhong-Yu
關鍵字: GIS;地理資訊系統;rational formula;合理化公式
出版社: 土木工程學系
摘要: 
對於缺乏流量資料之集水區,合理化公式一直被廣泛使用以推求設計
洪峰流量.雖然其應用上極為簡便,唯使用時亦產生困擾,其中各參數之求
取眾說紛紜,以致易啟爭議;因此同一集水區所求得之不同頻率年設計洪峰
流量,難以有確定之結果.本研究乃針對以往所使用之合理化公式時僅依經
驗公式推求相關參數之不合理處加以修正,以合理之理論背景配合電腦分
析,以期達到兼具學理及精確之結果.同時,本研究乃以地理資訊系統軟體
ArcView整合地理性資料,並結合遙測影像分類技術,發展出一套以合理化
公式為基礎,且能迅速.精確推估集水區不同頻率年尖峰流量.並同時顯示
集水區空間特性之系統.其乃利用地理資訊系統軟體.影像分析軟體及自行
撰寫(Avenue)之程式,求得所需之參數,進而得到集水區之不同頻率年尖峰
流量.

Rational formula is profoundly used to estimate peak flow
rate in urban area as well as the watersheds lack of rainfall-
runoffrecords. On the otherhand,the parameters of rational
formula are not well-defined and thus the resulted peak flow
rates for different return periods are not unique. Because
geographic information systems and image analysis technologies
are able to produce more accurate digital spatial data which
are important to determine associated parameters of rational
formula,such as runoff coefficient,time of concentration,----
etc.,for runoff estimation.The research is thusto use GIS and
image processing softwares ArcView and IMAGINE to obtain
parametervalue for proposed watershed.By fitting in rational
formula ,the designedpeak flow rate for different return year
can be produced. Also,since ArcViewsoftware employs AVENUE
program,the proposed method also contains a series ofgraphic
user interfaces to automatically generate outcomes of rational
formulacalculatoion for different retuen periods which will be
quite helpful for individual user.
URI: http://hdl.handle.net/11455/13476
Appears in Collections:土木工程學系所

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