Status report of the single heater test chapter 4 integrated analyses
The primary purposes of the Single Heater Test (SHT) are to study the thermal-mechanical responses of the heated block. The SHT is too small and does not have adequate access for a complete study of the coupled thermal-hydrological-chemical processes. The SHT is used as a shake-down/scoping study for the thermal-hydrological- chemical processes. For the thermal-hydrological process, the temporal and spatial variations of the moisture content in the heated block are monitored by neutron logging in Holes 15, 17, 22, and 23, electrical resistivity tomograph (ERT) in Holes 24 to 27. In addition, relative humidity, gas pressure, and temperature are measured in zones between packers in Holes 16 and 18. Temperature is also measured by resistance temperature devices (RTD) in the neutron logging holes (1 5, 17, 22, and 23). Chemical sensors were installed in Holes 20 and 21, but the sensors did not respond to the moisture in the rock. Water was collected from Zone 4 in Hole l6. Calculated temperature distribution and the measured ones are compared. The humidity and gas pressure measurements in Holes 16 and 18 will are discussed. The moisture content measured by neutron logging and ERT will be presented and discussed. Calculated saturation distributions are presented and compared with the neutron logging results and the ERT. The chemical composition of the water collected from Hole 16 is discussed. Fracture closing and opening based on the thermomechanical measurements are summarized. Air permeability changes measured in Holes 16 and 18 are presented. An integrated discussion is presented.
- Research Organization:
- Lawrence Livermore National Lab., CA (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 314069
- Report Number(s):
- UCRL-ID--129921; ON: DE98058730
- Country of Publication:
- United States
- Language:
- English
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