Korelasi pekali kekasaran kekar dengan sudut geseran puncak satah ketakselanjaran batuan syis, Semenanjung Malaysia

Translated title of the contribution: Correlation of joint roughness coefficient with peak friction angles of discontinuity planes of schists, Peninsular Malaysia

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Shear behavior and value of peak friction angle of a discontinuity plane is strongly controlled by its surface roughness. As such, surface roughness is an important factor to be evaluated in determining the stability of structures excavated in rock body. Several approaches can be adopted for the determination of surface roughness of discontinuities. This paper presents a simple approach, in the form of two polynominal equations to correlate the peak friction angle (φ p) with the Joint Roughness Coefficient (JRC) for discontinuity plane in fresh and slightly weathered schists. The polynomial equations are φ p= -0.022JRC 2 + 3.21JRC + 28.1 for fresh discontinuities and φ p= -0.025JRC 2 + 3.24JRC + 26.6 for slightly weathered discontinuity. Both equations exhibited coefficient of determination R 2= 0.98. These results offer an alternative method to estimate φ p of discontinuity planes by measuring the JRC values of the discontinuity planes in the field.

Original languageUndefined/Unknown
Pages (from-to)293-297
Number of pages5
JournalSains Malaysiana
Volume41
Issue number3
Publication statusPublished - Mar 2012

Fingerprint

Malaysia
schist
discontinuity
roughness
friction
coefficients
surface roughness
polynomials
rocks
shear
estimates

Keywords

  • Joint roughness coefficient
  • Peak friction angle
  • Schists
  • Tilt test

ASJC Scopus subject areas

  • General

Cite this

Korelasi pekali kekasaran kekar dengan sudut geseran puncak satah ketakselanjaran batuan syis, Semenanjung Malaysia. / Rafek, A. Ghani; Goh, Thian Lai; Arifin, Mohd Hariri.

In: Sains Malaysiana, Vol. 41, No. 3, 03.2012, p. 293-297.

Research output: Contribution to journalArticle

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abstract = "Shear behavior and value of peak friction angle of a discontinuity plane is strongly controlled by its surface roughness. As such, surface roughness is an important factor to be evaluated in determining the stability of structures excavated in rock body. Several approaches can be adopted for the determination of surface roughness of discontinuities. This paper presents a simple approach, in the form of two polynominal equations to correlate the peak friction angle (φ p) with the Joint Roughness Coefficient (JRC) for discontinuity plane in fresh and slightly weathered schists. The polynomial equations are φ p= -0.022JRC 2 + 3.21JRC + 28.1 for fresh discontinuities and φ p= -0.025JRC 2 + 3.24JRC + 26.6 for slightly weathered discontinuity. Both equations exhibited coefficient of determination R 2= 0.98. These results offer an alternative method to estimate φ p of discontinuity planes by measuring the JRC values of the discontinuity planes in the field.",
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AU - Goh, Thian Lai

AU - Arifin, Mohd Hariri

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N2 - Shear behavior and value of peak friction angle of a discontinuity plane is strongly controlled by its surface roughness. As such, surface roughness is an important factor to be evaluated in determining the stability of structures excavated in rock body. Several approaches can be adopted for the determination of surface roughness of discontinuities. This paper presents a simple approach, in the form of two polynominal equations to correlate the peak friction angle (φ p) with the Joint Roughness Coefficient (JRC) for discontinuity plane in fresh and slightly weathered schists. The polynomial equations are φ p= -0.022JRC 2 + 3.21JRC + 28.1 for fresh discontinuities and φ p= -0.025JRC 2 + 3.24JRC + 26.6 for slightly weathered discontinuity. Both equations exhibited coefficient of determination R 2= 0.98. These results offer an alternative method to estimate φ p of discontinuity planes by measuring the JRC values of the discontinuity planes in the field.

AB - Shear behavior and value of peak friction angle of a discontinuity plane is strongly controlled by its surface roughness. As such, surface roughness is an important factor to be evaluated in determining the stability of structures excavated in rock body. Several approaches can be adopted for the determination of surface roughness of discontinuities. This paper presents a simple approach, in the form of two polynominal equations to correlate the peak friction angle (φ p) with the Joint Roughness Coefficient (JRC) for discontinuity plane in fresh and slightly weathered schists. The polynomial equations are φ p= -0.022JRC 2 + 3.21JRC + 28.1 for fresh discontinuities and φ p= -0.025JRC 2 + 3.24JRC + 26.6 for slightly weathered discontinuity. Both equations exhibited coefficient of determination R 2= 0.98. These results offer an alternative method to estimate φ p of discontinuity planes by measuring the JRC values of the discontinuity planes in the field.

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