Dergiler / Maden Tetkik ve Arama Dergisi / 2026 / Cilt: 179 Sayı: 179

An alternative approach to estimate the shear strength parameters of intact rock

Prof. Dr. Kamil Kayabalı(Department of Geological Engineering, Ankara University, 06830, Ankara, Türkiye)0000-0002-0228-0777
Atakan Balci(Department of International Affairs, The General Directorate of Ilbank, 06560, Ankara, Türkiye)0009-0005-1817-8530
Sayfa
124–137
Yayın Tarihi
2026-04-27
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⚡ TL;DR(1 Cümlede Hızlı Çıkarım)

Overall, the findings suggest that the proposed approach has potential as an alternative testing method in rock mechanics.

📌 3 Maddede Bu Makale

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Amaç & Hipotez:Engineering structures built on or within rock masses require a proper characterization of their geomechanical properties.
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Temel Bulgular & Veri:Triaxial compression (3XC) tests are routinely employed to determine the cohesion © and friction angle (ϕ) of intact rocks.
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Sonuç & Katkı:Overall, the findings suggest that the proposed approach has potential as an alternative testing method in rock mechanics.
🔬Tür:Araştırma Makalesi
📍Kapsam:Genişletilmiş Akademik Örneklem
⚙️Değişkenler:Intact Rock · Shear Strength Parameters · Triaxial Compression Test

Abstract

Engineering structures built on or within rock masses require a proper characterization of their geomechanical properties. In this context, determining the strength parameters of intact rock is essential. Triaxial compression (3XC) tests are routinely employed to determine the cohesion © and friction angle (ϕ) of intact rocks. However, this test not only involves inherent uncertainties but also typically requires a full day to complete a single set of samples. The objective of this study is to evaluate a more practical approach for determining the c and ϕ of intact rocks. For this purpose, 20 types of intact rock were tested via 3XC, uniaxial compression (UC), and single-shear (SS) methods. The internal friction angles were determined from UC tests, while the cohesion values were obtained from SS tests. The c-ϕ pairs derived from the 3XC tests were compared with those obtained from the UC and SS tests. The results indicate that SS tests tend to overestimate cohesion compared to 3XC tests, whereas UC tests generally underestimate friction angles. Overall, the findings suggest that the proposed approach has potential as an alternative testing method in rock mechanics.

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Bu Makaleye Atıf Yap

Kayabalı, P. D. K., Balci, A. (2026). An alternative approach to estimate the shear strength parameters of intact rock. Maden Tetkik ve Arama Dergisi, Cilt: 179 Sayı: 179, 124–137. https://doi.org/10.19111/bulletinofmre.1856342

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Kaynakça (37)

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