Results of a coupled fracture-flow test at the 0.5-m scale

This report presents progress made on two experiments on 0.5-meter-scale blocks to determine thermohydromechanical (THM) behavior of fractured rock. We first present results for an experiment on sample SB3, including data for flow measurements through a horizontally oriented, artifical (saw-cut) fracture at a series of differential fluid pressures and temperatures under uniaxial stress conditions up to 14 MPa. We then present the experiment design and a progress report on the assembly of experiment SB4, flow through a vertically oriented fracture intersected by a line heat source