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Prediction of in situ Permeability for Limestone Rock Using Rock Quality Designation Index

Authors: Ahmed T. Farid, Muhammed Rizwan

Abstract:

Geotechnical study for evaluating soil or rock permeability is a highly important parameter. Permeability values for rock formations are more difficult for determination than soil formation as it is an effect of the rock quality and its fracture values. In this research, the prediction of in situ permeability of limestone rock formations was predicted. The limestone rock permeability was evaluated using Lugeon tests (in-situ packer permeability). Different sites which spread all over the Riyadh region of Saudi Arabia were chosen to conduct our study of predicting the in-situ permeability of limestone rock. Correlations were deducted between the values of in-situ permeability of the limestone rock with the value of the rock quality designation (RQD) calculated during the execution of the boreholes of the study areas. The study was performed for different ranges of RQD values measured during drilling of the sites boreholes. The developed correlations are recommended for the onsite determination of the in-situ permeability of limestone rock only. For the other sedimentary formations of rock, more studies are needed for predicting the actual correlations related to each type.

Keywords: Packer, permeability, rock, quality.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1132311

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References:


[1] Hsu S., Chung M.; Ku C. Tan C. & Weng W., “An application of acoustic televiewer and double packer system to the study of the hydraulic properties of fractured rocks,” 60th Canadian Geotechnical Conference & 8th joint CGS/IAH-CNC Groundwater Conference, vol.1, Ottawa, Canada, 200, pp. 415-422.
[2] Ewert F. K., “Permeability, grout ability and grouting of rocks related to dam sites,” Part 1, Springer verlarg, Berlin, 1997, pp. 31–77.
[3] Lugeon M., Barrage et Geologie. Dunod, Paris, 1933.
[4] Houlsby A. “Routine Interpretation of the Lugeon water-test,” Quarterly Journal of Engineering Geology, vol. 9, 1976, pp.303-313.
[5] Nappi M., Esposito L., Piscopo V., Rega G., “Hydraulic characterization of some sedimentary rocks of Molise (Southern Italy) through outcropping measurements and Lugeon tests,” Journal of Eng. Geology, vol. 81, 2005, pp. 54–64.
[6] Hamm S., Kimm M., Cheonga J., Sona M., Kimm T., “Relationship between hydraulic conductivity and fracture properties estimated from packer tests and borehole data in a fracture granite,” Engineering Geology, vol 92(1-2), 2007, pp. 73-87.
[7] Qureshi M. U., Al-Mawali K., Khan K. M., “Using RQD to estimate the in-situ permeability of discontinuous rocks,” 5th Int. Young Geotechnical Eng. Conference, 2013, pp. 447-450.
[8] Magnusson K. A., Duran O., “Comparison between core log and hydraulic and geophysical measurements in boreholes,” Geoexploration, vol. 22(3-4), 1984, pp. 169-186.
[9] Gates W. C., “The hydro-potential (HP) value: a rock classification technique for evaluation of the ground-water potential in fractured bedrock,” Environmental & Engineering Geosciences, Vol. 3(2), 1997, pp. 251-267.
[10] Deere D. U., “Technical description of rock cores for engineering purposes,” Rock Mechanics and Eng. Geology, vol. 1, 1963, pp. 16-22.
[11] Deere D. U. and Deere D. W., “The rock quality designation (RQD) index in practice of rock classification systems for engineering purposes,” ASTM STP 984, Louis Kirkaldie Ed., American Society of Testing materials, Philadelphia, 1988, pp. 91-101. Goodman R., “Introduction to rock mechanics,” First Edition. J. Wiley, New York, 1980, pp. 32-34.