Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/14843
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dc.contributor.advisor陳正炎zh_TW
dc.contributor.advisorJen-Yan Chenen_US
dc.contributor.author吳傳偉zh_TW
dc.contributor.authorWu, Chuan-Weien_US
dc.date2002zh_TW
dc.date.accessioned2014-06-06T06:53:10Z-
dc.date.available2014-06-06T06:53:10Z-
dc.identifier.urihttp://hdl.handle.net/11455/14843-
dc.description.abstract摘 要 土地開發的行為導致地表逕流係數增大,對下游地區而言,暴雨來襲時,將會需要承受比開發前更大的洪水災害,因此需設置滯洪設施利用有限滯洪容積以達消減與遲滯洪峰為目的。本研究推導滯洪水文模式,配合數值演算,探討不同降雨延時之三角形、梯形入流歷線,作用於矩形溢流口與孔口出流口形式之滯洪水理特性,並藉由渠槽試驗驗證之,研究結果獲致以下成果: 1.以水文連續方程(3-3)式為數值演算基礎,搭配Runge-Kutta法演算流經滯洪設施之水理現象,獲致三角形與梯形入流歷線之控制方程為(3-19)~(3-22)式,經本研究的渠槽試驗驗證下,不論入流歷線型態或出流口之差異,兩者獲致相當吻合的結果,足以佐證數值模擬的可行性與準確性。 2.消減尖峰流量為滯洪設施之設計指標,研究中獲致三角形入流歷線於矩形溢流口與孔口之洪峰消減度κ之經驗關係為(5-5)與(5-6)式;而梯形者為(5-8)與(5-9)式。另外,對於洪峰稽延時間Ts與無因次尖峰流量Qop/Qip之關係參酌圖5-16與圖5-30,顯示當入流歷線呈三角形者其Qop/Qip值越小時,Ts值會越大之趨勢較明顯,而Qop/Qip值等於1時,梯形者之Ts皆大於0,表示洪峰雖無消減,但可延長尖峰到達時間。 3.探討梯形、三角形入流歷線之滯洪容積差異,由圖5-17、圖5-20、圖5-31與圖5-34,顯示梯形入流歷線洪水體積相對比三角形者為大,因此需要更大的滯洪容積與校小的開口尺寸,才能予以遲滯。同時,顯示矩形溢流口之出流口設計比矩形孔口者需要較大滯洪容積,即矩形孔口式出流口有較好的滯洪效應。zh_TW
dc.description.abstractAbstract Land development is known to cause a large coefficient of surface runoff. When rainfall happens, more floods occur downstream than upstream. A detention pond must be constructed to reduce the peak time and peak discharge by making use of storage volume. This study utilizes detention pond experiments to verify that the numerical routing of continuity equation, and discusses the hydrology characteristics of detention with triangle or trapezoid inflow hydrograph by using a rectangular spillway and an orifice outlet. The results of this study are outlined as follows: 1.The foundation of numerical routing is the hydrology continuity equation (3-3). By using the Runge-Kutta method, we can calculate the governing equations (3-19) ~ (3-22) of triangle and trapezoid inflow hydrology. The verification of detention experiments shows us that the outflow hydrology is close to numerical result no matter what kind of outlet is used. It shows that the continuity equation can accurately simulate the characteristics of a detention pond. 2.In this research, the experience formulas for peak reduction κ are (5-5) and (5-6) with triangle hydrology and formulas (5-8) and (5-9) representing trapezoid hydrograph. In addition, figs.5-16 and 5-30 show the relationship between dimensionless peak lag time Ts and peak outflow Qop/Qip. The value of Ts is less when Qop/Qip is larger under the triangle inflow hydrograph. Under the trapezoid inflow hydrograph, Ts is larger than 0 when the value of Qop/Qip is equal to 1. It means although peak discharge can't be reduced, peak time can lag. 3.Figures 5-17, 5-20, 5-31, 5-34 show the differences of storage volume between triangle inflow hydrographs and trapezoid inflow hydrographs. The detention of trapezoid hydrograph needs larger storage volumes and less size of an outlet than the triangle hydrograph. In addition, the storage volume for the orifice is less than the spillway; this means the outlet for the rectangular orifice has a better detention effect.en_US
dc.description.tableofcontents目 錄 摘要 I 英文摘要 II 目錄 III 圖目錄 VI 表目錄 X 照片目錄 X 符號說明 XI 第一章 前言 1 1-1研究動機 1 1-2研究目的 2 1-3本文組織 3 第二章 文獻回顧 4 2-1流量公式 4 2-2滯洪特性與演算 7 2-2.1滯洪特性 7 2-2.2滯洪演算 10 2-3滯洪設施 11 第三章 滯洪演算 12 3-1 滯洪現象與特性 12 3-1.1 水文歷線 13 3-1.2 洪峰消減與稽延 14 3-1.3 滯洪容積 14 3-2 滯洪水文演算 15 3-2.1 水文連續方程式 16 3-2.2 入流歷線型態 21 3-2.3 無因次連續方程式 23 3-3 數值演算 26 3-3.1 數值方法 26 3-3.2 數值演算步驟 30 第四章 渠槽試驗 34 4-1 試驗儀器佈置 34 4-2 試驗步驟 41 4-3 試驗條件 44 4-4 流量經驗公式 48 4-4.1 矩形溢流口流量公式 48 4-4.2 矩形孔口流量公式 51 第五章 結果分析與討論 54 5-1 數值演算與試驗結果比較 54 5-1.1 矩形溢流口形式 55 5-1.2 矩形孔口形式 61 5-2 三角形入流歷線滯洪水理特性 66 5-2.1 入流歷線分佈 66 5-2.2 洪峰消減與稽延 68 5-2.3 滯洪容積 77 5-3 梯形入流歷線滯洪水理特性 85 5-3.1 入流歷線分佈 85 5-3.2 洪峰消減與稽延 87 5-3.3 滯洪容積 95 第六章 結論與建議 102 6-1 結論 102 6-2 建議 104 參考文獻 105 附圖目錄 109 作者簡介 132zh_TW
dc.language.isoen_USzh_TW
dc.publisher土木工程學系zh_TW
dc.subjectdetention ponden_US
dc.subject滯洪池zh_TW
dc.subjecthydrology continuity equationen_US
dc.subjectinflow hydrographen_US
dc.subjectstorage volumeen_US
dc.subject水文連續方程zh_TW
dc.subject入流歷線zh_TW
dc.subject滯洪容積zh_TW
dc.title不同降雨延時作用下滯洪水理特性之數值演算與試驗驗證zh_TW
dc.titleNumerical Routing and Experimental Verification of Detention Pond for Different Rainfall Durationsen_US
dc.typeThesis and Dissertationzh_TW
item.grantfulltextnone-
item.openairetypeThesis and Dissertation-
item.languageiso639-1en_US-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.cerifentitytypePublications-
item.fulltextno fulltext-
Appears in Collections:土木工程學系所
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