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Function finding for indirect determination of rock brittleness based on genetic programming and non-linear multiple regression models

Khandelwal, Manoj and Faradonbeh, Roohollah Shirani and Armaghani, Danial Jahed and Majid, Muhd Zaimi Abd. and Monjezi, Masoud (2016) Function finding for indirect determination of rock brittleness based on genetic programming and non-linear multiple regression models. Engineering with Computers . pp. 1-9. ISSN 0177-0667 (In Press)

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Abstract

Brittleness of the rock is one of the most critical features for design of underground excavation project. Therefore, proper estimating of rock brittleness can be very useful for designers and evaluators of geotechnical applications. In this study, feasibility of genetic programming (GP) model in predicting brittleness of the rock samples is examined. In this regard, several laboratory tests including uniaxial compressive strength, Brazilian, density and punch penetration were conducted on 48 rock samples collected from various locations of India. Considering multiple-inputs, several GP models were constructed to estimate brittleness index (BI) of the rock and finally, the best GP model was selected. Note that, GP can make an equation for predicting output of the system using model inputs. To show applicability of the developed GP model, non-linear multiple regression (NLMR) was also applied and developed. Considering some model performance indices, performance prediction of the GP and NLMR models were evaluated and it was found that the GP model is superior to NLMR one. Based on coefficient of determination (R2) of testing datasets, by proposing GP model, it can be improved from 0.882 (which was obtained by NLMR model) to 0.904. It is worth mentioning that the proposed predictive models in this study should be planned and used for the same conditions and the established inputs ranges.

Item Type:Article
Uncontrolled Keywords:Genetic programming, Non-linear multiple regression, Rock brittleness
Subjects:T Technology > TA Engineering (General). Civil engineering (General)
Divisions:Civil Engineering
ID Code:72827
Deposited By: Fahmi Moksen
Deposited On:20 Nov 2017 08:14
Last Modified:20 Nov 2017 08:14

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