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Title

Application of Artificial Neural Networks (ANN)to Predict Geomechanical Properties of AsmariLimestones

Year: 1395
COI: JR_JGEO-12-1_005
Language: EnglishView: 203
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Authors

m Razifard - Department of Engineering Geologyt,Tarbiat Modares University, P.O. Box ۱۴۱۱۵-۱۷۵, Tehran, Iran
m Khamechian - Department of Engineering Geologyt,Tarbiat Modares University, P.O. Box ۱۴۱۱۵-۱۷۵, Tehran, Iran
m.r. AminNaseri - Department of Industrial Engineering, Tarbiat Modares University, P.O. Box ۱۴۱۱۵-۱۴۳, Tehran, Iran

Abstract:

A number of common laboratory rock mechanics tests are carried out in all geotechnical projects such as dams,to determine parameters such as porosity, density, water absorption, sonic velocity, Brazilian tensile strength, uniaxial compressive strength, and triaxial compressive strength. In this paper, data obtained from two dams in Asmari Formation including Khersan 1 and Karun 4 - both located in Chahar-MahalVaBakhtiari Province, Iran - have been subjected to a series of statistical analyses. Then, using Multivariate Linear Regression (MLR) and Artificial Neural Networks values of UCS, E, C, and j were predicted using the input parametersincludingdepth, compressionultrasonic velocity, porosity, density, and Brazilian tensile strength. The designed ANN in this research was a feedforwardbackpropagation network which is powerful tool to solve prediction problems. Designed network had two hidden layer (hidden layer 1: 18 neurons and hidden layer 2: 20 neurons). Via comparing designed MLR and ANN models, it was revealed that ANNs (R2 UCS= 0.91, R2 E = 0.87, R2C =0.78, R2phi= 0.61) are more efficient than MLR models (R2 UCS= 0.69, R2E= 0.69, R2C = 0.66, and R2 phi = 0.50) in predicting strength and shear parameters of the intact rock. Also, to enhance the credibility of this study, some extra tests were carried out to evaluate the efficiency of network designed for prediction of strength parameters. The results obtained from this network were as: R2 UCS= 0.85, R2E = 0.81.

Keywords:

Artificial Neural networks (AAN) , FeedforwardBackpropagation , Multivariate Linear Regression (MLR) , Asmari Formation , Uniaxial Compressive Strength (USC) , Modulus of Elasticity (E) , Cohesive Strength (C) , j (Internal Friction Angle)

Paper COI Code

This Paper COI Code is JR_JGEO-12-1_005. Also You can use the following address to link to this article. This link is permanent and is used as an article registration confirmation in the Civilica reference:

https://civilica.com/doc/705360/

How to Cite to This Paper:

If you want to refer to this Paper in your research work, you can simply use the following phrase in the resources section:
Razifard, m and Khamechian, m and AminNaseri, m.r.,1395, Application of Artificial Neural Networks (ANN)to Predict Geomechanical Properties of AsmariLimestones ,https://civilica.com/doc/705360

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Paper count: 31,665
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