A triple-continuum approach for modeling flow and transport processes in fractured rock

被引：128

作者：

Wu, YS ^{[1
]}

Liu, HH ^{[1
]}

Bodvarsson, GS ^{[1
]}

机构：

[1] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Earth Sci, Berkeley, CA 94720 USA

来源：

JOURNAL OF CONTAMINANT HYDROLOGY | 2004年 / 73卷 / 1-4期

关键词：

naturally fractured reservoir; dual-continuum porous media; double-porosity; dual-permeability; triple-continuum model; numerical reservoir simulation; fractured unsaturated rock;

D O I：

10.1016/j.jconhyd.2004.01.002

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

This paper presents a triple-continuum conceptual model for simulating flow and transport processes in fractured rock. Field data collected from the unsaturated zone of Yucca Mountain, a repository site of high-level nuclear waste, show a large number of small-scale fractures. The effect of these small fractures has not been considered in previous modeling investigations within the context of a continuum approach. A new triple-continuum model (consisting of matrix, small-fracture, and large-fracture continua) has been developed to investigate the effect of these small fractures. This paper derives the model formulation and discusses the basic triple-continuum behavior of flow and transport processes under different conditions, using both analytical solutions and numerical approaches. The simulation results from the site-scale model of the unsaturated zone of Yucca Mountain indicate that these small fractures may have an important effect on radionuclide transport within the mountain. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：145 / 179

页数：35

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