Shuo Yang1, Yuanhai Li1, 2, ∗, Xiaojie Tang1, 2, Jinshan Liu1, 2
CMES-Computer Modeling in Engineering & Sciences, Vol.122, No.2, pp. 633-659, 2020, DOI:10.32604/cmes.2020.07919
Abstract The deformation and damage evolution of sandstone after heat treatment greatly
influence the efficient and safe development of deep geothermal energy extraction. To
investigate this issue, laboratory confined compression tests and numerical simulations
were conducted on pre-holed sandstone specimens after heat treatment. The laboratory test
results show that the failure modes are closely related to the heat treatment temperature,
with increasing treatment temperature, the failure modes change from mixed and shear
modes to a splitting mode. The cracks always initiate from the sidewalls of the hole and
then propagate. The failure process inside the hole proceeds as follows: calm period,… More >
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