Please use this identifier to cite or link to this item:
標題: 九份二山崩塌地土壤水份特性之研究
A Study of Soil Water Characteristics on Chiu-fen-er-shan Landsliding Area
作者: 林明義
Lin, Ming-Yi
關鍵字: Chiu-fen-er-shan;九份二山;water characteristic curve;unsaturated hydraulic conductivity;水份特性曲線;不飽和水力傳導度
出版社: 水土保持學系
本研究量測九份二山地區土壤水份特性,研究結果指出,九份二山土壤含砂質壤土、砂質黏壤土及黏土等,不同質地土壤呈現不同的水份特性。九份二山土壤屬砂質壤土部份,排水曲線下降較為快速;黏土部份,排水曲線較為和緩;砂質黏壤土則介於兩著之間。由實驗數據,引用Van Genuchten 水份特性推估方程式,決定不同質地土壤水份特性方程式之參數,不同土樣之水份特性曲線方程式如下列所示:
土樣一 θ(h) = 0.03483+0.46617/[1+(αh)1.15]0.1304
土樣二 θ(h) = 0.03484+0.39116/[1+(αh)1.45]0.3103
土樣三 θ(h) = 0.03151+0.38349/[1+(αh)1.15]0.1304
土樣四 θ(h) = 0.03168+0.36432/[1+(αh)1.15]0.1304
土樣五 θ(h) = 0.03336+0.39764/[1+(αh)1.55]0.3548
土樣六 θ(h) = 0.03388+0.41712/[1+(αh)1.40]0.2857
土樣七 θ(h) = 0.02451+0.40449/[1+(αh)1.50]0.3333

The objective of this research is to study the soil water characteristics on Chiu-fen-er-shan landslidung area. The soil texture on the experimental field includes sandy loam, sand clay loam, and clay. The water retention curves of different
soil texture were determined by measured water content and water potential .The model suggested by Van Genuchten
was applied to express the water characteristics of these soils. The parameters of this model of different soil texture were determined with the experimental data by curve fitting technology. The equations of water characteristic curves of different soil samples are as following:
Sample 1. θ(h) = 0.03483+0.46617/[1+(αh)1.15]0.1304
Sample 2. θ(h) = 0.03484+0.39116/[1+(αh)1.45]0.3103
Sample 3. θ(h) = 0.03151+0.38349/[1+(αh)1.15]0.1304
Sample 4. θ(h) = 0.03168+0.36432/[1+(αh)1.15]0.1304
Sample 5. θ(h) = 0.03336+0.39764/[1+(αh)1.55]0.3548
Sample 6. θ(h) = 0.03388+0.41712/[1+(αh)1.40]0.2857
Sample 7. θ(h) = 0.02451+0.40449/[1+(αh)1.50]0.3333
The theory developed by Mualem was used to predict the unsaturated hydraulic conductivity.
Appears in Collections:水土保持學系

Show full item record

Google ScholarTM


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.