International Scientific Journal

External Links


In geothermal energy exploration, the reservoir rock is always subjected to thermal cycles and its physical properties will be seriously affected. In this paper, the changes of the internal structure of the sandstone after the thermal cycle are firstly evaluated by ultrasonic tests. Then, uniaxial compression tests are conducted on the treated specimens. The effects of the thermal cycling on mechanical properties and energy evolution law of the sandstone are analyzed. The results show that the density, P-wave velocity and mechanical properties of the sandstone reduced with the increase in the thermal cycle, especially in the high temperature cycle. The increase of the temperature in the thermal cycle can increase the influence of the thermal cycle on the energy evolution law.
PAPER REVISED: 2020-07-17
PAPER ACCEPTED: 2020-08-09
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2020, VOLUME 24, ISSUE Issue 6, PAGES [4001 - 4009]
  1. Ghassemi, A., et al., A 3-D Study of the Effects of Thermomechanical Loads on Fracture Slip in Enhanced Geothermal Reservoirs, International Journal Rock Mechanics and Mining Sciences, 44 (2007), 8, pp. 1132-1148
  2. Zhao, F., et al., Fractal Analysis of Pore Structure of Granite after Variable Thermal Cycles, Environmental Earth Sciences, 78 (2019), Dec., 677
  3. Hassanzadegan, A., et al., The Effects of Temperature and Pressure on the Porosity Evolution of Flechtinger Sandstone, Rock Mechanics and Rock Engineering, 47 (2014), Apr., pp. 421-434
  4. Mahmutoglu, Y., Mechanical Behaviour of Cyclically Heated Fine Grained Rock, Rock Mechanics and Rock Engineering, 31 (1998), July, pp. 169-179
  5. Zhu, Z., et al., Study of Mechanical Performance of Marble under High Pressure and Cyclic Temperature, Rock and Soil Mechanics, 28 (2007), 11, pp. 2279-2284
  6. Xu, C., Sun, Q., Effects of Quenching Cycle on Tensile Strength of Granite, Geotechnique Letters, 8 (2018), 2, pp. 165-170
  7. Liu, P. F., et al., Effect of Thermal Cycling and Hydro‐thermal Cycling on Physical and Mechanical Properties of Sandstone, Energy Science & Engineering, 8 (2020), 3, pp. 718-730
  8. Sun, Q., et al., Experiment Study of Physical and Mechanical Properties of Sandstone after Variable Thermal Cycles, Bulletin of Engineering Geology and the Environment, 79 (2020), Apr., pp. 3771-3784
  9. Hou, P., et al., Changes in Breakdown Pressure and Fracture Morphology of Sandstone Induced by Nitrogen Gas Fracturing with Different Pore Pressure Distributions, International Journal Rock Mechanics and Mining Sciences, 109 (2018), Sept., pp. 84-90
  10. Meng, et al., Research on Non‐linear Characteristics of Rock Energy Evolution under Uniaxial Cyclic Loading and Unloading Conditions, Environmental Earth Sciences, 78 (2019), Nov., 650
  11. Xie, H. P., et al., Energy Analysis for Damage and Catastrophic Failure of Rocks, Science China Technological Sciences, 54 (2011), Nov., pp. 199-209
  12. Hou, P., et al., Effect of the Layer Orientation on Mechanics and Energy Evolution Characteristics of Shales under Uniaxial Loading, International Journal of Mining Science and Technology, 26 (2016), 5, pp. 857-862

© 2022 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence