Determination of block size in south heights of Mashhad city

Document Type : Original Article

Authors

1 M.Sc. Student, Department of Geology, Ferdowsi University of Mashhad, Iran

2 Professor, Department of Geology, Ferdowsi University of Mashhad, Iran,

3 . Professor, Department of Geology, Ferdowsi University of Mashhad, Iran, lashkaripour@um.ac.ir

Abstract

Ultrabasic rocks constitute a major part of ophiolites in south of Mashhad. Due to increase in the price of property and development of this city in southern highlands and also increasing construction in this area, the study of ultrabasic rocks and their joint system, from the perspective of engineering properties assessment of the rock mass and its effect on the instability of trenches and slopes in this area, has been a matter of great importance. In this study, three different experimental methods have been used to calculate RQD and the results indicate a reasonable concordance. In addition to the determination RQD, the parameters such as the weighted joint density (Wjd) and the block volume (Vb) have been calculated that these methods offers higher specifications of block size. The block size is an important input data in many rock engineering calculations and can be measured using different experimental methods and modeling.

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References

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Scientific Quarterly Journal of Iranian Association of Engineering Geology
Volume 7, Number 3 & 4
March 2014
Pages 15-26

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History

  • Receive Date: 28 August 2013
  • Revise Date: 20 December 2013
  • Accept Date: 05 January 2014

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