Thermal-mechanical-hydrological-chemical responses in the single heater test at the ESF

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The Single Heater Test (SHT) is conducted in the Exploratory Studies Facility (ESF) to study the thermal-mechanical responses of the rock mass. A set of boreholes were drilled in the test region for conducting a scoping test of the coupled thermal-mechanical- hydrological-chemical (TMHC) processes. The holes for the TMHC tests include electrical resistivity tomography (ERT), neutron logging/temperature, hydrological, and optical multiple point borehole extensometers. A 4-kW heater was installed in the heater hole, and was energized on August 26, 1996. Some observed movements of the water around the heater are associated with a possible dry-out region near the heater. The ... continued below

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18 p.

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Lin, W.; Blair, S. & Buettner, M February 1, 1997.

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Description

The Single Heater Test (SHT) is conducted in the Exploratory Studies Facility (ESF) to study the thermal-mechanical responses of the rock mass. A set of boreholes were drilled in the test region for conducting a scoping test of the coupled thermal-mechanical- hydrological-chemical (TMHC) processes. The holes for the TMHC tests include electrical resistivity tomography (ERT), neutron logging/temperature, hydrological, and optical multiple point borehole extensometers. A 4-kW heater was installed in the heater hole, and was energized on August 26, 1996. Some observed movements of the water around the heater are associated with a possible dry-out region near the heater. The water that has been moved is more dilute than the in situ ground water, except for the concentration of Ca. This indicates that fractures are the major water pathways, and the displaced water may have reached an equilibrium with carbonate minerals on the fracture surfaces. No mechanical-hydrological coupling has been observed. The tests are on-going, and more data will be collected and analyzed.

Physical Description

18 p.

Notes

INIS; OSTI as DE98050760

Other: FDE: PDF; PL:

Source

  • 36. United States rock mechanics symposium, New York, NY (United States), 29 Jun - 2 Jul 1997

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  • Other: DE98050760
  • Report No.: UCRL-JC--125611
  • Report No.: CONF-970617--
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 611843
  • Archival Resource Key: ark:/67531/metadc695450

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  • February 1, 1997

Added to The UNT Digital Library

  • Aug. 14, 2015, 8:43 a.m.

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  • April 10, 2017, 2:24 p.m.

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Lin, W.; Blair, S. & Buettner, M. Thermal-mechanical-hydrological-chemical responses in the single heater test at the ESF, article, February 1, 1997; California. (digital.library.unt.edu/ark:/67531/metadc695450/: accessed August 23, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.