Geomechanics of the Spent Fuel Test: Climax

Wilder, D.G.; Yow, Jesse L.

doi:10.2172/60134

Cited by 6 publications

(39 citation statements)

References 20 publications

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“…However, subsequent deformation measurements made during heating and cooling cycles of the SFT-C support the block motions interpreted for the excavation staye. Specifically, measurements of fracture displacements indicate that, during the cooldown cycle, the wedge in the North Heater Drift moved in a direction similar to that estimated f^r the excavation phase (Wilder and Yow, 1987) . Cooldown and excavation responses should be similar since both result from reductions in compressive stress.…”

Section: $Wmentioning

confidence: 71%

“…The possible stress conditions at the time of formation of each of the joint sets were also evaluated. The changes in stress and the resulting deformations of the fractures have also been evaluated (Wilder and Yow, 1987). Observations of the locations of seepage relative to the fractures and their orientations relative to changes in stress form the basis of this paper.…”

Section: Shaftmentioning

confidence: 99%

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886142 Influence of stress-induced deformations on observed water flow in fractures of the Climax Granitic Stock

Wilder

1988

International Journal of Rock Mechanics and Mining Sciences &am

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Section: $Wmentioning

confidence: 71%

Section: Shaftmentioning

confidence: 99%

886142 Influence of stress-induced deformations on observed water flow in fractures of the Climax Granitic Stock

Wilder

1988

International Journal of Rock Mechanics and Mining Sciences &am

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“…Although studies by Maldonado (1977), Allingham and Zietz (1962), Barnes and Poole (1968), and Houser and Poole (1960) pre date the SFT-C, the works of Connolly (1982), , , Wilder, Yow, and Thorpe (1982), and were done in direct support of the test. Most of these investiga tions have been synthesized and analyzed by Wilder and Yow (1984), whose work is the basis of the sum mary given here.…”

Section: Structural Geology*mentioning

confidence: 99%

“…Maldonado (1977), Orkild (1983), and Knauss (1981) have investigated the complex interrelationships among these faults. The reader is referred to these sources or to Wilder and Yow (1984) for a summary of their findings. …”

Section: Area Faultsmentioning

confidence: 99%

“…Wilder and Yow (1984) numbered these joint sets in chronological order of formation rather than in abundance, as is often done. Even so, they are discussed here in order of prominence because this aspect is more important to our understanding of the structural ability and response of the SFT-C. Orientation and frequency data are provided for each set in Table 4-2.…”

Section: Subsurface Geological Featuresmentioning

confidence: 99%

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Spent Fuel Test-Climax: An evaluation of the technical feasibility of geologic storage of spent nuclear fuel in granite: Final report

Patrick

1986

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From the development of the test concept in lanuarv 1978 to the writing of this final report, the Spent Fuel Test-Climax (SFT-C) has spanned 8 years and invoked hundreds of scientists, engineers, and craftsmen in many organizations. During that time, those of us associated with the project had the plea sure i f witnessing the successful achievement of all the engineering and scientific objectives of the test. Perha ns more importantly, we saw an increased public awareness of the need for nuclear energy and for a means of safely and reliably disposing of the associated wastes. Some 10,000 people from all walks of life throughout the U.S. and 22 foreign countries visited the test facility. Most went a way with a more objective view of nuclear waste disposal than when thev arrived.Because the SFT-C was officially completed in FY 1985 and only very limited funding remains to fin ish up the remaining reports, it was not possible to assemble a complete team to write this report. Instead, it was assembled and edited by one person, but builds heavily on the FY 19S3 project interim report in several technical areas. Although the responsibility for the material presented here rests with the author, Most of the scientists and engineers who worked on the SFT-C have published formal reports and journal articles, providing a lasting record of their efforts. However, many others filled roles vital to the success of the project, but that did not lend themselves to public documentation. Although it is not possi ble to properly acknowledge the contributions of each of these participants, those individuals and organi zations whose efforts were keys to the success of the project are recognized here.The Facility engineering and construction were the responsibility of Holmes and Narver (general architect and engineering), Fenix and Scisson (architect and engineering services for mining and drilling), and Rey nolds Electrical and Engineering Company (REECo) (construccion). Special acknowledgment is extended to the late G.W. Adair, who served as superintendent throughout the construction and during the early storage phase, and to the REECo crew who provided continuous subsurface access and experimental sup port far beyond the normal requirements. Members of this crew included (at various times): L. Ala, J. Campbell, L. Cheney, D. Daffer, G. Frye, C. Halstead, and G. Medina. Appreciation is also extended to H. Allen, T. Clapp, D. Hansen, R. Murphy, and W. Smyth who provided special drilling support for stress measurements and geological characterization.Spent fuel encapsulation was accomplished at the engine maintenance, assembly, and disassembly (EMAD) facility with a highly skilled Westinghouse team managed by D.C. Durrill. T. Cross was the project engineer with key responsibility for all hardware provided by Westinghouse. The accomplishments of his team were essential in preparing nuclear waste for emplacement less than two years from the date of au thorization of the SFT-C. C. Balmgren coordinated and was the principal contributor t...

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Modeling of thermally driven hydrological processes in partially saturated fractured rock

Tsang¹,

Birkhölzer²,

Mukhopadhyay³

2009

Reviews of Geophysics

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[1] This paper is a review of the research that led to an indepth understanding of flow and transport processes under strong heat stimulation in fractured, porous rock. It first describes the anticipated multiple processes that come into play in a partially saturated, fractured porous volcanic tuff geological formation when it is subject to a heat source such as that originating from the decay of radionuclides. The rationale is then given for numerical modeling being a key element in the study of multiple processes that are coupled. The paper outlines how the conceptualization and the numerical modeling of the problem evolved, progressing from the simplified to the more realistic. Examples of numerical models are presented so as to illustrate the advancement and maturation of the research over the last 2 decades. The most recent model applied to in situ field thermal tests is characterized by (1) incorporation of a full set of thermal-hydrological processes into a numerical simulator, (2) realistic representation of the field test geometry in three dimensions, and (3) use of site-specific characterization data for model inputs. Model predictions were carried out prior to initiation of data collection, and the model results were compared to diverse sets of measurements. The approach of close integration between modeling and field measurements has yielded a better understanding of how coupled thermal hydrological processes produce redistribution of moisture within the rock, which affects local permeability values and subsequently the flow of liquid and gases. The fluid flow, in turn, will change the temperature field. We end with a note on future research opportunities, specifically those incorporating chemical, mechanical, and microbiological factors into the study of thermal and hydrological processes.

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Geomechanics of the Spent Fuel Test: Climax

Abstract: DISTRIBUTION flr THIS D'f;C'oi.'.r!i IS MJ&I.

Cited by 6 publications

References 20 publications

886142 Influence of stress-induced deformations on observed water flow in fractures of the Climax Granitic Stock

886142 Influence of stress-induced deformations on observed water flow in fractures of the Climax Granitic Stock

Spent Fuel Test-Climax: An evaluation of the technical feasibility of geologic storage of spent nuclear fuel in granite: Final report

Modeling of thermally driven hydrological processes in partially saturated fractured rock

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