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Determination of intact rock properties of Eyigba lead – Zinc Shale hosted Sedimentary rock Ebonyi State

  • Unique Paper ID: 167308
  • Volume: 11
  • Issue: 3
  • PageNo: 1679-1684
  • Abstract:
  • This paper aim at presenting the intact rock properties of Eyigba, Ebonyi State. The study location is within Ikwo and Abakaliki Local Government Areas of Ebonyi State between latitude 6°09’ and 6° 14N and longitude 8°05’E and 8° 10’E longitude. The objectives of this paper include; collection of rock samples (for coring of core samples), determine the mechanical, physical and shear strength properties of the intact rock samples. The following standards were used: ISRM 1989 (uniaxial compressive strength, UCS), ASTM D 7012-14 (Young Moduli and Poisson ratio), ASTM D 2216 (Bulk Density), ASTM D6473-15 (Specific gravity and water Absorption Capacity), and ASTM C97-83 (Porosity); ASTM D2936-71 (tensile strength) while, ASTM D5608-08 (cohesion and friction angle). The mean and standard deviations for these properties are; UCS (209.90 36.33) MPa, Young Modulus (37.60 7.7) MPa, Poisson ratio (0.28 0.09), Deformation modulus (339.48 4.9), Cohesion (14.60 4.93) MPa, Tensile strength (4.18 0.37) MPa, density, (290.70 2.63) kg/m3, water absorption (0.47 0.03) %, porosity (15.67 3.87) %, and the friction angle (25.04 0.26)° respectively. There is variation in the rock properties (due to high standard deviation) except for Poisson ratio, water absorption, tensile strength and friction angles which is less than 0.5. In conclusion single value should not be used to represent rock properties due to variability (uncertainty) presence in the measured values. Hence, probability distribution function should be employed to predict the representative values (function) of intact rock properties of this nature. Stochastic methods of quantifying intact rock properties is hereby recommended.
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Cite This Article

  • ISSN: 2349-6002
  • Volume: 11
  • Issue: 3
  • PageNo: 1679-1684

Determination of intact rock properties of Eyigba lead – Zinc Shale hosted Sedimentary rock Ebonyi State

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