頁籤選單縮合
題名 | Experimental and Numerical Studies on the Morphological Similarity of Debris-Flow Fans=土石流扇狀地幾何相似特性之實驗與數值研究 |
---|---|
作 者 | 蔡元芳; 謝正倫; | 書刊名 | 中國工程學刊 |
卷期 | 20:6 1997.11[民86.11] |
頁次 | 頁629-642 |
分類號 | 434.273 |
關鍵詞 | 土石流; 土石流扇狀地; 幾何相似特性; 數值模擬; 實驗研究; Debris flow; Debris-flow fan; Morphological similarity; Numerical simulation; Experimental study; |
語文 | 英文(English) |
中文摘要 | 本研究利用一系列之土石流扇狀地室內實驗及數值模擬探討土石流扇狀地之幾何相似特 性。首先以扇狀地中心軸長度(L□)最大寬度(B□)及扇頂淤積厚度(Z□)等三個地形量為特性 長度,針對扇形地之橫剖面、縱剖面及平面之型態、進行無因次分析。由實驗及數值模擬結果顯示 土石流扇狀地之供因次橫剖面及無因次縱剖面在平衡階段皆具有高斯分佈函數之特性,至於無因次 之平面形態則近似一圓弧。而藉由此三條無因次函數,土石流之扇狀地體積公式及三維地形公式皆 可輕易求出。 |
英文摘要 | The morphological similarity of debris-flow fans is found in this study by using a series of laboratory experiments and numerical simulations. The length of the center line(L□), maximum width (B□) and thickness of the apex point(Z ) of debris-flow fans are adopted as the characteristic parameters to analyze the morphological similarity of the debris-flow fans in this study. The experimental and numerical results showed that the non-dimensional longitudinal and cross sectional profiles of debris-flow fans in the "stable stage" can be described by Gaussian functions, while the non-dimensional plan from of the debris- flow fans is well fitted by a circular curve. By combining the three non-dimensional curves mentioned above, the total volume and the 3-D morphological function of debris-folw fans can be easukt dereved. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。