Evaluation of Crack Aperture Distribution of Natural Barrier Materials for Deep Geological Disposal of High-Level Radioactive Waste

被引：0
作者：
Jang K.-J. [1 ,2 ]
Namgung S. [1 ]
Kim B.-J. [1 ]
Kwon J.-S. [1 ]
Park S.-H. [2 ]
机构：
[1] Dept. of Mechanical Engineering, Kumoh National Institute of Technology
来源：
Transactions of the Korean Society of Mechanical Engineers, B | 2024年 / 48卷 / 03期
关键词：
Aperture; CFD; Crack; High-level Radioactive Waste;
D O I：
10.3795/KSME-B.2024.48.3.159
中图分类号：
学科分类号：
摘要：
Safe disposal of high-level radioactive waste (HLW) is a crucial concern for many countries operating nuclear plants. Deep geological disposal (DGD) has emerged as the preferred method to permanently isolate HLW from the biosphere. In the DGD system, HLW is securely stored in disposal canisters and placed within disposal holes at a depth of less than 500 m, surrounded by a buffer material. However, in the event that a disposal canister fails, radioactive material may leak through cracks in the surrounding rock mass. Therefore, to evaluate the behavior of radioactive materials in the rock, the crack characteristics in the rock must first be clearly identified. In this study, test equipment for fluid injection test was established in a natural cracked rock, and the size of the aperture in the fracture was determined using the test result. The average gap was calculated to be 0.102 mm, and the gap volume was 61 mL. The aperture distribution evaluation method was verified by CFD analysis. © 2024 The Korean Society of Mechanical Engineers.
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页码：159 / 166
页数：7
相关论文
共 15 条
  • [1] Sellin P., Leupin O. X., The Use of Clay as an Engineered Barrier in Radioactive-Waste Management - a Review, Clays and Clay Minerals, 61, 6, pp. 477-498, (2013)
  • [2] Snow D. T., A Parallel Plate Model of Fractured Permeable Media, (1965)
  • [3] Bear J., Dynamics of Fluids in Porous Media, pp. 1-764, (1972)
  • [4] Tsang Y. W., Witherspoon P. A., Hydromechanical Behavior of a Deformable Rock Fracture Subject to Normal Stress, Journal of Geophysical Research: Solid Earth, 86, B10, pp. 9287-9298, (1981)
  • [5] Tsang Y. W., Witherspoon P. A., The Dependence of Fracture Mechanical and Fluid Flow Properties on Fracture Roughness and Sample Size, Journal of Geophysical Research: Solid Earth, 88, B3, pp. 2359-2366, (1983)
  • [6] Tsang Y. W., The Effect of Tortuosity on Fluid Flow through a Single Fracture, Water Resources Research, 20, 9, pp. 1209-1215, (1984)
  • [7] Abelin H., Neretnieks I., Tunbrant S., Moreno L., Final Report of the Migration in a Single Fracture - Experimental Results and Evaluation, pp. 1-163, (1985)
  • [8] Patir N., Cheng H. S., An Average Flow Model for Determining Effects of Three-Dimensional Roughness on Partial Hydrodynamic Lubrication, J. of Lubrication Tech, 100, 1, pp. 12-17, (1978)
  • [9] Moreno L., Tsang Y. W., Tsang C. F., Hale F. V., Neretnieks I., Flow and Tracer Transport in a Single Fracture: A Stochastic Model and Its Relation to Some Field Observations, Water Resources Research, 24, 12, pp. 2033-2048, (1988)
  • [10] Selroos J. O., Walker D. D., Strom A., Gylling B., Follin S., Comparison of Alternative Modelling Approaches for Groundwater Flow in Fractured Rock, Journal of Hydrology, 257, 1-4, pp. 174-188, (2002)
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