Improvements of the mathematical model and the In-Situ Method for Estimation of Transport Parameters in Soil

• Main Authors: Suu-yan Liang, 梁書嚴
• Other Authors: Jui-sheng Chen
• Format: Others
• Language: zh-TW
• Published: 2012
• Online Access: http://ndltd.ncl.edu.tw/handle/00187467793531305677

碩士 === 國立中央大學 === 應用地質研究所 === 100 === Fate and transport models to calculate transport in soils are increasingly being used in practice. The reliability of soil transport model calculations depends on the accuracy with which relevant processes for contaminant transport are implemented in fate transport model. Besides an appropriate model choice, the parameterization of the model also plays an important role. Dispersion coefficients are important parameters for soil fate and transport model. Field infiltration test with a tracer is a proposed technology for simultaneous determination of longitudinal and transverse dispersion coefficients in soil. Existing research of mathematical models assumed infinite boundary condition. When Peclet number is smaller, the concentration of infinite boundary will be lower. If use the analytical solution of infinite boundary condition to estimate the solution transport parameter, and therefore underestimate the dispersion coefficients. In Field infiltration test with tracer, experience obtained in this test is used to refine the apparatus designs, operational procedures and relevant details for the test. We used the concentration breakthrough curve of Field infiltration test with tracer to estimated longitudinal and transverse dispersion.