- Title
- A true triaxial strength criterion for rocks by gene expression programming
- Creator
- Zhou, Jian; Zhang, Rui; Qiu, Yingui; Khandelwal, Manoj
- Date
- 2023
- Type
- Text; Journal article
- Identifier
- http://researchonline.federation.edu.au/vital/access/HandleResolver/1959.17/198662
- Identifier
- vital:19097
- Identifier
-
https://doi.org/10.1016/j.jrmge.2023.03.004
- Identifier
- ISSN:1674-7755 (ISSN)
- Abstract
- Rock strength is a crucial factor to consider when designing and constructing underground projects. This study utilizes a gene expression programming (GEP) algorithm-based model to predict the true triaxial strength of rocks, taking into account the influence of rock genesis on their mechanical behavior during the model building process. A true triaxial strength criterion based on the GEP model for igneous, metamorphic and magmatic rocks was obtained by training the model using collected data. Compared to the modified Weibols-Cook criterion, the modified Mohr-Coulomb criterion, and the modified Lade criterion, the strength criterion based on the GEP model exhibits superior prediction accuracy performance. The strength criterion based on the GEP model has better performance in R2, RMSE and MAPE for the data set used in this study. Furthermore, the strength criterion based on the GEP model shows greater stability in predicting the true triaxial strength of rocks across different types. Compared to the existing strength criterion based on the genetic programming (GP) model, the proposed criterion based on GEP model achieves more accurate predictions of the variation of true triaxial strength (
- Publisher
- Chinese Academy of Sciences
- Relation
- Journal of Rock Mechanics and Geotechnical Engineering Vol. 15, no. 10 (2023), p. 2508-2520
- Rights
- All metadata describing materials held in, or linked to, the repository is freely available under a CC0 licence
- Rights
- http://creativecommons.org/licenses/by-nc-nd/4.0/
- Rights
- Copyright @2023 Institute of Rock and Soil Mechanics, Chinese Academy of Sciences
- Rights
- Open Access
- Subject
- 4019 Resources engineering and extractive metallurgy; Gene expression programming (GEP); Intermediate principal stress; Rock failure criteria; True triaxial strength
- Full Text
- Reviewed
- Funder
- This research is partially supported by the National Natural Science Foundation of China (Grant No. 42177164), the Distinguished Youth Science Foundation of Hunan Province of China (Grant No. 2022JJ10073) and the Innovation-Driven Project of Central South University (Grant No. 2020CX040).
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