標題: Radionuclide transport in a multiple and parallel fractured system
作者: Liu, CT
Yeh, HD
環境工程研究所
Institute of Environmental Engineering
關鍵字: radionuclide;fractured rock;analytical solution
公開日期: 1-Sep-2003
摘要: This paper is to study the effects of fracture width on the transport of a radionuclide in a multiple and parallel fractured rock formation. The equation describing the transport of the radionuclide released from the geological repository includes the following mechanisms: advection, dispersion, radioactive decay, and adsorption on the fracture surfaces. The concentration at the inlet of each fracture is assumed constant. An analytical solution was derived based on such a mathematical model by the Laplace transform technique. The solution indicates that identical concentration distributions can be observed in each fracture of the equal-width parallel fractured system. In an unequal-width fractured system, the penetration distances along wide fractures are generally larger than that in a single uniform fractured system. The radionuclide concentration in the wide fracture quickly reaches source concentration in the near-field environment, confirming that the fracture width plays an important role in radionuclide transport through a system of multiple and parallel fractured media.
URI: http://hdl.handle.net/11536/27584
ISSN: 0029-5450
期刊: NUCLEAR TECHNOLOGY
Volume: 143
Issue: 3
起始頁: 322
結束頁: 334
Appears in Collections:Articles