林口台地非飽和紅土滲透性質之研究

Coefficient of Permeability of Linkou Unsaturated Lateritic Soil

許俊森(Chun-Sen Hsu)

指導教授 ： 魏敏樺

國立臺北科技大學/工程學院/土木與防災研究所/碩士(2006年)

https://doi.org/10.6841/NTUT.2006.00191

摘要

無資料

關鍵字

非飽和紅土 ； 三軸滲透試驗 ； 滲透係數 ； 基質吸力 ； 土壤-水份特性曲線

並列摘要

Many geotechnical and geo-environmental problems takeplace incoporating with water flow through unsaturated soils. Water flow through the unsaturated zone in a residual hillside or earth dam is the problem where permeability of the unsaturated soil is involved. The effects of the properties of unsaturated soil are usually ignored in the engineering practice and numerical analysis. The coefficient of permeability for an unsaturated soil may be a function of void ratio or volumetric water content (matric suction) which is represented by the soil-water characteristic curve (SWCC). A triaxial permeameter system was developed to measure the coefficient of permeability of unsaturated lateritic soil at Linkou terrace. Because the measurement of the SWCC and the coefficient of permeability of unsaturated soil is time-consuming and costly empirical models were used to estimate both the SWCC and the coefficient of permeability. The estimated values were found to compare well with the experimental data obtained in laboratory. Hopefully that the empirical models would help engineers in carrying out their analysis and design in practice.

並列關鍵字

unsaturated soil ； triaxial permeability test ； coefficient of permeability ； matric suction ； soil-water characteristic curve ； empirical models

參考文獻

[4] Arya, L.M. and Paris, J.F. (1981) “A Physicoempirical Model to Predict the Soil Moisture Characteristic from Particle-Size Distribution and Bulk Density Data,” Soil Science Society of American Journal, 45, pp.1023-1030.

[7] ASTM. D1577-91 (2002) “Standard Test Method for Laboratory Compaction Characteristics of Soil using Modified Effort,” West Conshohocken. Pa.

[8] ASTM. D1586-99 (2002) “Standard Test Method for Penetration Test and Spilt-Barrel Sampling of Soils,” West Conshohocken. Pa.

[9] ASTM. D2216-98 (2002) “Standard Test Method for Laboratory Determination of Water Content of Soils,” West Conshohocken. Pa.

[10] ASTM. D2435-96 (2002) “Standard Test Method for One Dimensional Consolidation Properties of Soils,” West Conshohocken. Pa.