RS3 Feasibility Modelling of a Semi-Circular Notched Sample Spalling Experiment

DOI

10.2991/978-94-6463-258-3_79How to use a DOI?

Keywords

Spalling; RS3; Laboratory Test; Sandstone; Elastic Continuum

Abstract

Spalling in rock has been an area of focus for researchers since it was first observed in tunnels and boreholes. The earliest form of spalling tests are in-situ tests, but due to high costs and the risks associated with allowing an excavation to fail, the focus of spalling research has shifted to a safe and controlled laboratory environment. Numerous tests exist today that can recreate the conditions for spalling with unique geometry and loading conditions. A review of currently established tests allows for gaps in the literature to be identified, ultimately leading to a new test. The Semi-Circular Notched Sample spalling test (SCNS test) was conceptualized as a rectangular specimen with a semi-circular notch at the mid-height. Due to the compression of a circular notched sample, a stress concentration is created, and compressive stresses at the notch are magnified. The condition for loading was analyzed in RS3, and a full-area compressive load was identified. Results from the modelling and physical testing are compared via strain results from the RS3 simulation, and the strain gauges equipped on the physical test. Based on the comparison between numerical models and experimental data, the model predictions matched successfully with the physical samples. This indicates viability in the SCNS test’s ability to re-create the spalling phenomena under the simplest of testing conditions.

Copyright

© 2023 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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TY  - CONF
AU  - M. Trzop
AU  - L. Gomez
AU  - A. G. Corkum
PY  - 2023
DA  - 2023/11/08
TI  - RS3 Feasibility Modelling of a Semi-Circular Notched Sample Spalling Experiment
BT  - Proceedings of the Rocscience International Conference  (RIC 2023)
PB  - Atlantis Press
SP  - 849
EP  - 858
SN  - 2589-4943
UR  - https://doi.org/10.2991/978-94-6463-258-3_79
DO  - 10.2991/978-94-6463-258-3_79
ID  - Trzop2023
ER  -