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| | Abstract | | In-situ heating test has been conducted to evaluate the influence of high temperature in an underground facility at a depth of 50m. Repeated measurements of resistivity tomography were thought to be useful to map the extent of the high temperature and unsaturated zone during the heating test. The measured results demonstrated that the resistivity of the rock mass around the heating well decreased and this affected area was found to gradually expand from the heated area during the heating. This suggests that high temperature zone is detected by resistivity tomography. On the other hand, resistivity change occurred by unsaturation of rock mass appeared little or nothing. |
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