Abstract
This paper is Part I of a series of two papers concerned with an in situ Thermo-Hydraulic Experiment (THE) carried out at the Underground Research Laboratory of Atomic Energy of Canada Limited. The THE was designed to determine the thermoporoelastic parameters, which control the magnitude of the pore pressure induced by thermal loading. The experimental setup involved a heater installed in a sub-horizontal borehole drilled from an underground gallery, and piezometers and thermistors located at different distances from the heater in auxiliary boreholes drilled from an adjacent gallery. Several water injection and heater tests were conducted during this experiment. Part I focuses on the design of the experiment, which involves specifying the nature of the boundary conditions, and determining the heater power, the duration of the thermal load, and the locations of the piezometers and thermistors. Part I also reports the experimental data collected in this experiment, and in particular the significant thermally induced pore pressures measured in the heater tests.
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