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September 10, 2025Scientific ReportsOpen Access

Experimental study on the influence of ground temperature and pore water pressure on the mechanics of excavation unloading sandstone

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Authors

SGSheng GongLCLili ChenXCXingzhou Chen

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Overview

Experimental study reveals temperature and pore water pressure significantly affect sandstone mechanics, indicating the need for deeper excavation strategies.

Key Points

  • Peak strength of unloading sandstone decreases with higher temperature and pore water pressure.
  • At 1 MPa pore water pressure, temperature has minimal effect on deformation, but significant at higher pressures.
  • Triaxial unloading experiments highlight changes in elastic modulus and microcrack development under varying conditions.
  • Increased temperature and pore water pressure diminish rock energy storage capacity, affecting excavation stability.

Cite This Study

Gong et al. (2025) studied this question.

synapsesocial.com/papers/68c1aacc54b1d3bfb60e36c7https://doi.org/10.1038/s41598-025-13761-2
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