사각 격자를 이용한 단열-다공암반내 분리 단열망 구축기법에 대한 연구

A Study on the Constructing Discrete Fracture Network in Fractured-Porous Medium with Rectangular Grid

Ji-woong Han, Yong-Soo Hwang, Chul-Hyung Kang

Abstract

For the accurate safety assessment of potential radioactive waste disposal site which is located in the crystalline rock it is important to simulate the mass transportation through engineered and natural barrier system precisely, characterized by porous and fractured media respectively. In this work the methods to construct discrete fracture network for the analysis of flow and mass transport through fractured-porous medium are described. The probability density function is adopted in generating fracture properties for the realistic representation of real fractured rock. In order to investigate the intersection between a porous and a fractured medium described by a 2 dimensional rectangular and a cuboid grid respectively, an additional imaginary fracture is adopted at the face of a porous medium intersected by a fracture. In order to construct large scale flow paths an effective method to find interconnected fractures and algorithms of swift detecting connectivities between fractures or porous medium and fractures are proposed. These methods are expected to contribute to the development of numerical program for the simulation of radioactive nuclide transport through fractured-porous medium from radioactive waste disposal site.

Key Words : Discrete Fracture Network, Fractured-Porous Medium, Fracture Intersection, Connectivity, 분리단열망, 탄열-다공암반, 단열교차, 연결도

Reference

JNFCWT

Online Submission

Korean Radioactive
Waste Society (KRS)

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