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Soft computing method for assessment of compressional wave velocity

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Title Soft computing method for assessment of compressional wave velocity
 
Creator SINGH, R
VISHAL, V
SINGH, TN
 
Subject Artificial neural network
Fuzzy inference system
Adaptive neuro-fuzzy inference system (ANFIS)
P-wave
UCS
FUZZY MODEL
NEURO-FUZZY
ROCK
STRENGTH
IDENTIFICATION
PREDICTION
CONSTANT
SYSTEMS
ANFIS
 
Description The physico-mechanical properties of rocks and rockmass are decisive for the planning of mining and civil engineering projects. The Schmidt hammer Rebound Number (RN), Slake Durability Index (SDI), Uniaxial Compressive Strength (UCS), Impact Strength Index (ISI) and compressive wave velocity (P-wave velocity) are important and pertinent properties to characterize rock mass, and are widely used in geological, geotechnical, geophysical and petroleum engineering. The Schmidt hammer rebound can be easily obtained on site and is a non-destructive test. The P-wave velocity and isotropic properties of rocks characterize rock responses under varying stress conditions. Many statistics based empirical equations have been proposed for the correlation between RN, SDI, UCS, ISI and P-wave velocity. The Artificial Neural Network (ANN), Fuzzy Inference System (FIS) and neuro-fuzzy system are emerging techniques that have been employed in recent years. So, in the present study, soft computing is applied to predict the P-wave velocity. 85 data sets were used for training the network and 17 data sets for the testing and validation of network rules. The network performance indices correlation coefficient, Mean Absolute Percentage Error (MAPE), Root Mean Square Error (RMSE), and Variance Account For (VAF) are 0.9996, 0.744, 25.06 and 99.97, respectively, which demonstrates the high performance of the predictive capability of the neuro-fuzzy system. (C) 2012 Sharif University of Technology. Production and hosting by Elsevier B.V. All rights reserved.
 
Publisher ELSEVIER SCIENCE BV
 
Date 2014-10-15T08:00:49Z
2014-10-15T08:00:49Z
2012
 
Type Article
 
Identifier SCIENTIA IRANICA, 19(4)1018-1024
http://dx.doi.org/10.1016/j.scient.2012.06.010
http://dspace.library.iitb.ac.in/jspui/handle/100/14629
 
Language en