TY - JOUR ID - 2434 TI - Application of Machine Learning Models for Predicting Rock Fracture Toughness Mode-I and Mode-II JO - Journal of Mining and Environment JA - JME LA - en SN - 2251-8592 AU - Emami Meybodi, E. AU - Hussain, Syed Kh. AU - Fatehi Marji, M. AU - Rasouli, V. AD - Department of Geology, Yazd University, Yazd, Iran. AD - Mining and Metallurgical engineering department of Yazd University, Yazd, Iran. AD - Department of Petroleum Engineering, University of North Dakota, North Dakota, USA. Y1 - 2022 PY - 2022 VL - 13 IS - 2 SP - 465 EP - 480 KW - Intact rock KW - Macro and micro parameters KW - Machine Learning Method KW - Rock Fracture Toughness DO - 10.22044/jme.2022.11596.2148 N2 - In this work, the machine learning prediction models are used in order to evaluate the influence of rock macro-parameters (uniaxial compressive strength, tensile strength, and deformation modulus) on the rock fracture toughness related to the micro-parameters of rock. Four different types of machine learning methods, i.e. Multivariate Linear Regression (MLR), Multivariate Non-Linear Regression (MNLR), copula method, and Support Vector Regression (SVR) are used in this work. The fracture toughness of mode I and mode II (KIC and KIIC) is selected as the dependent variable, whereas the tensile strength, compressive strength, and elastic modulus are considered as the independent variables, respectively. The data is collected from the literature. The results obtained show that the SVR model predicts the values of KIC and KIIC with the determination coefficients (R2) of 0.73 and 0.77. The corresponding determination coefficient values of the MLR model and the MNLR model for KI and KII are R2 = 0.63, R2 = 0.72, and R2 = 0.62,0.75, respectively. The copula model predicts that the value of R2 for KI is 0.52, and for KII R2=0.69. K-fold cross-validation testing method performs for all these machine learning models. The cross-validation technique shows that SVR is the best-designed model for predicting the fracture toughness mode-I and mode-II. UR - https://jme.shahroodut.ac.ir/article_2434.html L1 - https://jme.shahroodut.ac.ir/article_2434_9e8c975dae7b161ca371a748f64395c2.pdf ER -