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Title: Migration of Water Pulse Through Fractured Porous Media

Abstract

Contaminant transport from waste-disposal sites is strongly affected by the presence of fractures and the degree of fracture-matrix interaction. Characterization of potential contaminant plumes at such sites is difficult, both experimentally and numerically. Simulations of water flow through fractured rock were performed to examine the penetration depth of a large pulse of water entering such a system. Construction water traced with lithium bromide was released during the excavation of a tunnel at Yucca Mountain, Nevada, which is located in an unsaturated fractured tuff formation. Modeling of construction-water migration is qualitatively compared with bromide-to-chloride (Br/CI) ratio data for pore-water salts extracted from drillcores. The influences of local heterogeneities in the fracture network and variations in hydrogeologic parameters were examined by sensitivity analyses and Monte Carlo simulations. The simulation results are qualitatively consistent with the observed Br/CI signals, although these data may only indicate a minimum penetration depth, and water may have migrated further through the fracture network.

Authors:
; ;
Publication Date:
Research Org.:
Yucca Mountain Project, Las Vegas, Nevada (US)
Sponsoring Org.:
US Department of Energy (US)
OSTI Identifier:
786566
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: 6 Jun 2001
Country of Publication:
United States
Language:
English
Subject:
12 MANAGEMENT OF RADIOACTIVE WASTES, AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES; CONSTRUCTION; EXCAVATION; FRACTURES; LITHIUM BROMIDES; PENETRATION DEPTH; PLUMES; SENSITIVITY; SIMULATION; TRANSPORT; TUFF; WASTE DISPOSAL; WATER; YUCCA MOUNTAIN

Citation Formats

S. Finsterle, J. T. Fabryka-Martin, and J. S. Y. Wang. Migration of Water Pulse Through Fractured Porous Media. United States: N. p., 2001. Web. doi:10.2172/786566.
S. Finsterle, J. T. Fabryka-Martin, & J. S. Y. Wang. Migration of Water Pulse Through Fractured Porous Media. United States. doi:10.2172/786566.
S. Finsterle, J. T. Fabryka-Martin, and J. S. Y. Wang. Wed . "Migration of Water Pulse Through Fractured Porous Media". United States. doi:10.2172/786566. https://www.osti.gov/servlets/purl/786566.
@article{osti_786566,
title = {Migration of Water Pulse Through Fractured Porous Media},
author = {S. Finsterle and J. T. Fabryka-Martin and J. S. Y. Wang},
abstractNote = {Contaminant transport from waste-disposal sites is strongly affected by the presence of fractures and the degree of fracture-matrix interaction. Characterization of potential contaminant plumes at such sites is difficult, both experimentally and numerically. Simulations of water flow through fractured rock were performed to examine the penetration depth of a large pulse of water entering such a system. Construction water traced with lithium bromide was released during the excavation of a tunnel at Yucca Mountain, Nevada, which is located in an unsaturated fractured tuff formation. Modeling of construction-water migration is qualitatively compared with bromide-to-chloride (Br/CI) ratio data for pore-water salts extracted from drillcores. The influences of local heterogeneities in the fracture network and variations in hydrogeologic parameters were examined by sensitivity analyses and Monte Carlo simulations. The simulation results are qualitatively consistent with the observed Br/CI signals, although these data may only indicate a minimum penetration depth, and water may have migrated further through the fracture network.},
doi = {10.2172/786566},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2001},
month = {6}
}