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研究生:黃群玲
研究生(外文):Huang, Chun-Lin
論文名稱:考量降雨入滲於河岸穩定分析模式之建立與應用
論文名稱(外文):Development and Application of Riverbank Stability Model Considering Rainfall Infiltration.
指導教授:楊錦釧楊錦釧引用關係
指導教授(外文):Yang, Jinn-Chuang
學位類別:碩士
校院名稱:國立交通大學
系所名稱:土木工程學系
學門:工程學門
學類:土木工程學類
論文種類:學術論文
論文出版年:2010
畢業學年度:98
語文別:中文
論文頁數:67
中文關鍵詞:Green-Ampt降雨入滲河岸穩定
外文關鍵詞:Green-Amptrainfall infiltrationriverbank stability
相關次數:
  • 被引用被引用:2
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本研究結合Green-Ampt入滲理論與Boussinesq地下水流方程式,計算因降雨入滲及河道水位影響之地下水面線,再以靜水壓假設求得土體內孔隙壓力分佈,最後以極限平衡法(limit equilibrium analysis)計算安全係數,藉以評估河岸之穩定性。研究中分別探討土壤滲透性、降雨強度與河道水位變化對河岸穩定之影響,並以濁水溪為應用案例,模擬分析其在柯羅莎颱風(2007)期間,河岸穩定隨時間變化之情形。模擬結果顯示,高滲透性土壤伴隨降雨強度越大或低滲透性土壤,在河道水位下降速度越快之條件下河岸越容易發生破壞。
In this study, a model combining Green-Ampt infiltration theory with Boussinesq equation has been developed to simulate groundwater table variation under the condition of interactions between rainfall infiltration and variation of river stage. Depending on the calculated groundwater table, pore-water pressure can be estimated with the assumption of hydrostatic pressure distribution. Subsequently, riverbank stability can be assessed by factor of safety based on limit equilibrium method. The developed model was used to examine the effects of key parameters including various values of soil permeability, rainfall intensity and changing speed of river stage on the riverbank stability. In addition, Cho-Shui Creek during Typhoon Krosa occurred in 2007 was chosen as an application case. According to the simulated results, the riverbank failure is easily to be triggered with high permeability soil under heavy rainfall intensity or with low permeability soil under rapid drawdown.
摘要 I
ABSTRACT II
誌謝 III
目錄 IV
表目錄 VI
圖目錄 VII
符號說明 IX
第一章 緒論 1
1.1 研究動機與目的 1
1.2 文獻回顧 1
1.3 研究方法與步驟 3
1.4 章節介紹 4
第二章 理論基礎 5
2.1 降雨入滲計算 5
2.2 地下水面線計算 7
2.3 河岸穩定性計算 8
第三章 模式之建立與驗證 11
3.1 模式之建立 11
3.1.1 降雨入滲之計算 11
3.1.2地下水面線之計算 13
3.1.3土體孔隙水壓之計算 14
3.1.4安全係數之建立 15
3.2 模式之驗證 16
3.2.1 降雨入滲模式之驗證 16
3.3.2地下水面線計算之驗證 16
3.3.3安全係數計算之驗證 17
第四章 河岸穩定分析模式之測試 18
4.1案例設定 18
4.2降雨特性對河岸穩定性之影響 18
4.3河道水位上升對河岸穩定性之影響 20
4.4河道水位下降對河岸穩定性之影響 21
第五章 應用案例 23
5.1濁水溪流域概述 23
5.2 模擬條件 23
5.3 結果分析 24
第六章 結論與建議 26
6.1結論 26
6.2建議 26
參考文獻 28


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