Classification of weathered andesitic rock materials from the İzmir Subway line on the basis of strength and deformation

Koca, Tümay Kadakci; Koca, Mehmet Yalçın

doi:10.1007/s10064-018-1346-y

Cited by 5 publications

(1 citation statement)

References 19 publications

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“…The most commonly measured or estimated mechanical property of rocks is the uniaxial compressive strength (UCS, MPa), as it is a consistent relative measure indicating the resistance of rock materials under axial loading conditions. The UCS varies remarkably with changing parameters such as lithological variances, rock mineralogy, texture, and degree of weathering [3][4][5][6][7][8][9][10][11][12][13]. nevertheless, the deformation properties of rocks (i.e., tangential Young Modulus (E ti , GPa) and tangential Poisson's ratio (v ti )) are other crucial rock properties in performing numerical modelling of rock masses [14][15][16].…”

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confidence: 99%

Archives of Mining Sciences

Köken

2021

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The deformation properties of rocks play a crucial role in handling most geomechanical problems. However, the determination of these properties in laboratory is costly and necessitates special equipment. Therefore, many attempts were made to estimate these properties using different techniques. in this study, various statistical and soft computing methods were employed to predict the tangential Young Modulus (E ti , GPa) and tangential Poisson's Ratio (v ti ) of coal measure sandstones located in Zonguldak Hardcoal Basin (ZHB), nW Turkey. Predictive models were established based on various regression and artificial neural network (ANN) analyses, including physicomechanical, mineralogical, and textural properties of rocks. The analysis results showed that the mineralogical features such as the contents of quartz (Q, %) and lithic fragment (LF, %) and the textural features (i.e., average grain size, d 50 , and sorting coefficient, S c ) have remarkable impacts on deformation properties of the investigated sandstones. By comparison with these features, the mineralogical effects seem to be more effective in predicting the E ti and v ti . The performance of the established models was assessed using several statistical indicators. The predicted results from the proposed models were compared to one another. it was concluded that the empirical models based on the ANN were found to be the most convenient tools for evaluating the deformational properties of the investigated sandstones.

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