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論文中文名稱:台灣部分地區土壤水份特性曲線之預測 [以論文名稱查詢館藏系統]
論文英文名稱:Prediction of soil-water characteristic curve of different texture soils in Taiwan [以論文名稱查詢館藏系統]
院校名稱:臺北科技大學
學院名稱:工程學院
系所名稱:土木與防災研究所
畢業學年度:97
出版年度:98
中文姓名:鄭雅仁
英文姓名:Ya-Jen Cheng
研究生學號:95428027
學位類別:碩士
語文別:中文
口試日期:2009-07-03
論文頁數:149
指導教授中文名:魏敏樺
指導教授英文名:Meen-Wah Gui
口試委員中文名:馮道偉;陳主惠
口試委員英文名:Tao-Wei Feng;Han-Chen Huang
中文關鍵詞:土壤水分特性曲線體積含水量基質吸力土壤轉換函數
英文關鍵詞:soil water characteristic curvevolume water contentmatric suctionpedo-transfer function
論文中文摘要:土壤水分特性曲線(soil-water characteristic curve, SWCC)對於非飽和土壤來說是非常重要的特性函數,此函數關係為特定基質吸力下所對應之體積含水量,對於土壤之水力行為有相當重大之影響。本研究針對台灣之新竹、南投、苗栗、嘉義地區中不同性質土壤進行土壤水份特性曲線試驗(SWCC),但由於試驗過程耗時又費力,因此有學者提出較經濟的模型去預測SWCC,本研究搭配前人之試驗共約185個試驗樣本建立台灣部份地區之SWCC資料庫,並以四位學者(Burdine, 1953、Gardner, 1956、van Genuchten, 1980、Fredlund and Xing, 1994) 所提出之不同預測方法來進行不同土壤性質之SWCC預測,分析結果以van Genuchten (1980) 較能充分擬合試驗樣本,但其缺點為無法擬合基質吸力為106而含水量為0之試驗點。
另外,亦有學者提出利用容易測定之土壤基本性質(例如,粒徑分佈、單位重、比重等)之間接方法預測SWCC,此方法稱為土壤轉換函數(pedo-transfer function, PTF),本研究以六位學者(Gupta and Larson, 1979、Vereecken et al., 1989、Scheinost et al., 1997、Zhuang et al., 2001、Fredlund et al., 2002、Aubertin, 2003) 提出之不同方法來進行不同土壤性質之SWCC預測並將其所有預測結果與試驗結果進行比較及討論。在所有預測模型中,以Gupta and Larson PTF (1979) 較能充分擬合本研究之試驗樣本,且其中就Fredlund et al PTF (2002) 之預測模型,由於本研究樣本數量不一致,導致此模型對於大多數樣本配適不佳,但對於樣本數最大之SM土壤,配適能力頗佳。
論文英文摘要:Soil water characteristic curve (SWCC) is an important function of unsaturated soil. It defines the volumetric water content corresponding to a particular suction in the soil. Experimental derivation of SWCC is time consuming and, hence, many scholars proposed simple models to back analyze SWCC. The models available are Burdine (1953), Gardner (1958), van Genuchten (1980), Fredlund and Xing (1994), etc.. In additional, there are also functions proposed to estimate SWCC from available soil properties such as particle-size distribution, bulk density, void rate and liquid limit. These estimation functions were referred to as pedo-transfer function (PTF) and some of the examples are Gupta and Larson (1975), Vereecken et al. (1989), Fredlund et al. (1997), Scheinost et al. (1997), Zhuang et al. (2001), and Aubertin (2003).
In this study, we back analyzed the SWCC of some 185 soil specimens of different textures using the above four simple models and found that van Genuchten (1980)’s model performed best among the four models. The above six PTFs were also used to estimate the SWCC of the soil specimens. Of all PTFs, we find that Gupta and Larson PTF (1979) is the best PTF model to fit our sample.
論文目次:摘 要 I
Abstract II
致謝 III
目錄 IV
表目錄 VI
圖目錄 VII
第一章 緒論 1
1.1 研究動機 1
1.2 研究內容 1
1.3 論文架構 2
第二章 文獻回顧 3
2.1 前言 3
2.2 非飽和土壤 3
2.3 土壤水份特性曲線 5
第三章 試驗流程與模擬分析 12
3.1 物理性質 12
3.2 土壤水份特性試驗 24
3.2.1 壓力鍋試驗 (pressure plate test) 24
3.2.2 鹽溶液試驗 (salt solution method) 29
3.2.3 SWCC試驗之結果討論 33
3.3 土壤水份特性曲線之經驗公式 40
3.3.1 Burdine Model (1953) 40
3.3.2 Gardner Model (1956) 40
3.3.3 van Genuchten Model (1980) 41
3.3.4 Fredlund and Xing (1994) 42
3.3.5 SWCC模型結果分析 45
第四章 土壤轉換函數PTF 59
4.1 介紹 59
4.2 Gupta and Larson PTF (1979) 59
4.3 Vereecken et al PTF (1989) 73
4.4 Scheinost et al PTF (1997) 86
4.5 Fredlund et al PTF (2002) 97
4.6 Zhuang et al (2001) PTF 111
4.7 Aubertin et al PTF (2003) 119
第五章 可靠性分析 127
5.1 介紹 127
5.2 各模型調整後判定係數之比較分析 127
5.3 各模型MD、RMSD之比較分析 128
5.4 各模型之敏感度分析 129
第六章 結論與建議 144
6.1 結論 144
6.2 結果建議 145
參考文獻 146
作者簡介 149
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論文全文使用權限:同意授權於2011-09-03起公開