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Advancing rock mass classification using machine learning approach
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AI
DOI：10.1007/s10064-025-04585-5.png)
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Abstract
En 中文
The rock mass rating (RMR) system is a widely used tool for assessing rock quality and recommending support, relying on six parameters: rock quality designation, uniaxial compressive strength, groundwater conditions, discontinuity spacing, condition, and orientation. The conventional RMR classification system necessitates the presence of all parameters. This study introduces a machine learning (ML) approach utilizing the random forest (RF) algorithm to predict rock mass classification with a reduced set of easily accessible parameters. A synthetic database of RMR parameters was generated to train the RF model, with Bayesian optimization applied to refine key settings such as learning rate, ensemble cycles, and maximum splits. The ML model was validated for accuracy and reliability through several performance metrics. Predictions of the proposed ML model using data from 41 real-world field cases demonstrate a high accuracy of 100%. With the advantages of the artificial intelligence (AI), the proposed ML model maintained over 90% accuracy even when key parameters such as discontinuity length, separation, or infilling were unavailable. This AI-powered approach offers a significant improvement over traditional methods, providing superior accuracy, adaptability, and reliability for rock quality assessment and support recommendations.
Keywords:
Rock mass classification
Rock mass rating
Random forest
Rock quality designation
Machine learning
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