Brine migration in salt and its implications in the geologic disposal of nuclear waste

Jenks, G.H.; Claiborne, H.C.

doi:10.2172/5293582

Cited by 14 publications

(16 citation statements)

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“…If brine were continuously driven towards the waste package by thermally induced force, as assumed in earlier analyses of brine migration [7], the lack of a low-pressure cavity need not affect the brine inflow. Brine thermally driven to the waste package could displace the surrounding salt and create its own cavity, if not first consumed by chemical reaction with the container.…”

Section: The Effect Of Salt Creepmentioning

confidence: 95%

“…A liquid inclusion in a salt crystal migrates up the temperature gradient to the grain boundary because of temperature-dependent solubility, at a rate determined by the rate of molecular and thermal diffusion of dissolved salt from the hot face to the cold face of the inclusion and by the kinetics of dissolution and crystallization [1][2][3][4][5][6]. Earlier studies [7] predicted thermally driven 2 transport of brine towards the waste package, assuming that a brine inclusion in a crystal moves across the grain boundary into the adjacent crystal and finally reaches the waste package.…”

Section: Motion Of Brine In Heated Pblycrystalline Saltmentioning

confidence: 99%

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Mass transfer in a salt repository

Pigford¹

1985

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Section: The Effect Of Salt Creepmentioning

confidence: 95%

Section: Motion Of Brine In Heated Pblycrystalline Saltmentioning

confidence: 99%

Mass transfer in a salt repository

Pigford¹

1985

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“…Under these conditions contribution of brine inclusion may be treated as a source function component f (x,t) in the brine flow governing equation. Based on Jenks and Claiborne (1981), showed this source term is…”

Section: Brine Inclusion Contribution To Total Brine Migrationmentioning

confidence: 99%

Brine flow in heated geologic salt.

Kuhlman¹,

Malama²

2013

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This report is a summary of the physical processes, primary governing equations, solution approaches, and historic testing related to brine migration in geologic salt. Although most information presented in this report is not new, we synthesize a large amount of material scattered across dozens of laboratory reports, journal papers, conference proceedings, and textbooks.We present a mathematical description of the governing brine flow mechanisms in geologic salt. We outline the general coupled thermal, multi-phase hydrologic, and mechanical processes. We derive these processes' governing equations, which can be used to predict brine flow. These equations are valid under a wide variety of conditions applicable to radioactive waste disposal in rooms and boreholes excavated into geologic salt. 3We focus on the development of the governing equations with the intent to solve them analytically or in a simplified numerical manner, although we briefly summarize some available fully coupled three-dimensional numerical models and some historic modeling results. We non-dimensionalize the governing equations, and make some statements about importance of terms in the governing equations for physically plausible ranges of material property values.We summarize both in situ and laboratory brine migration testing in intact geologic salt, primarily focusing on tests performed under heated conditions relevant to high-level waste disposal. Supporting material is presented in appendices on relevant aspects of laboratory water content determination for bedded salt, the nature and evolution of the disturbed rock zone, and geologic salt permeability testing.In the final summary chapter, we provide a narrative description of the processes controlling both isothermal and heated brine inflow to excavations in geologic salt. Based upon our review, we recommend several potential in situ and laboratory tests, which could be conducted to increase understanding, parametrize numerical models, and confirm the importance of competing physical processes.4

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“…In the past, brine-migration research for nuclear waste disposal has focused primarily on brine inclusion migration caused by thermal gradients (e.g., Anthony and Cline 1971;Jenks and Claiborne 1981;Roedder and Chou 1982;Yagnik 1983;Olander 1984). These previous investigations show that when a temperature gradient is applied to an all-liquid inclusion, migration is driven by solubility differences.…”

Section: Introductionmentioning

confidence: 99%

“…Thus, the inclusions tend to migrate toward the heat source. A number of mathematical expressions have been developed (Anthony and Cline 1971;Jenks and Claiborne 1981;Yagnik 1983;Olander 1984) for estimating the brine-inclusion-migration velocities up a thermal gradient. Caporuscio et al (2013) examined brine inclusion migration in single salt crystals and salt aggregates as a function of thermal gradients.…”

Section: Introductionmentioning

confidence: 99%