CORRECTION OF EQUIVALENT MEDIA PROPOSED BY SITHARAM AND VERIFICATION OF THE MODIFIED CRITERION

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GHAZVINIAN A.A.H.; BAGHERI M.

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Journal: Sharif Journal of Civil Engineering Year:2006 | Volume:22 | Issue:33 Page(s): 67-76

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Title

CORRECTION OF EQUIVALENT MEDIA PROPOSED BY SITHARAM AND VERIFICATION OF THE MODIFIED CRITERION

Author(s)

GHAZVINIAN A.A.H. | BAGHERI M. | Issue Writer Certificate

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Abstract

Sitharam proposed empirical equations in the year 2000 to evaluate the elastic modulus and the compression strength of rock masses. The equation proposed by him for evaluation of the elastic modulus is dependent on coefficient "a". He has introduced this coefficient up to 7Mpa of confining pressure. In this paper, a correction of the Sitharam equation is dealt with and, also, the coefficient "a" has been proposed up to a confining pressure of 60 Mpa, although the verification of the confining pressure was undertaken up to 20 Mpa.Verification of the modified equation is undertaken with a hypothetical numerical model. These models were constructed considering the equivalent (continuum) and discontinum media. Flac was used for analysis of the equivalent and UDEC for the discontinum media. These models were investigated for various conditions of joint distances, joint dips, etc. The results obtained are satisfactory for the above-mentioned equation and also for different values of "a". The Sitharam equation for evaluation of rock equivalent strength has also been compared with Hoek & Brown, Ramamurthy, Kalamars and Barton equations. The results show that the Sitharam equation is over estimating in comparison with others, whereas the Barton equation is under estimating. Ramamurthy and Kalamars equations estimate almost the same strength for the rock masses.

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APA: Copy

GHAZVINIAN, A.A.H., & BAGHERI, M.. (2006). CORRECTION OF EQUIVALENT MEDIA PROPOSED BY SITHARAM AND VERIFICATION OF THE MODIFIED CRITERION. SHARIF: CIVIL ENINEERING, 22(33), 67-76. SID. https://sid.ir/paper/128196/en

Vancouver: Copy

GHAZVINIAN A.A.H., BAGHERI M.. CORRECTION OF EQUIVALENT MEDIA PROPOSED BY SITHARAM AND VERIFICATION OF THE MODIFIED CRITERION. SHARIF: CIVIL ENINEERING[Internet]. 2006;22(33):67-76. Available from: https://sid.ir/paper/128196/en

IEEE: Copy

A.A.H. GHAZVINIAN, and M. BAGHERI, “CORRECTION OF EQUIVALENT MEDIA PROPOSED BY SITHARAM AND VERIFICATION OF THE MODIFIED CRITERION,” SHARIF: CIVIL ENINEERING, vol. 22, no. 33, pp. 67–76, 2006, [Online]. Available: https://sid.ir/paper/128196/en

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