Predictable shear behavior at high temperature
A standardized granite fracture specimen for EGS permeability research, whose shear behavior degrades predictably under real-time high temperature, guiding reservoir stimulation.
Li, Yangyang · Jin-ming, Dang · 71229932 · Shen, Baotang · Dan, Zheng · Hao-zheng, Zhang · Jia-qi, Hou
Journal of Central South University 2023
Peak shear strength degrades continuously from 30 °C to 400 °C, with a slow decline at 30–200 °C and a rapid decline at 200–400 °C
Fracture dilatancy decreases with temperature, and the reduction amplitude increases with normal stress
High temperature aggravates asperity damage, causing fracture roughness degradation with temperature