Petrographic and Geotechnical Aspects of the River Terraces at the University of Mosul as Buildings Foundations

Authors

  • Rahma S. Al-Auqadi Department of Petroleum and Refining, College of Petroleum and Mining Engineering, University of Mosul, Mosul, Iraq
  • Azealdeen S. Al-Jawadi Department of Petroleum and Refining, College of Petroleum and Mining Engineering, University of Mosul, Mosul, Iraq
  • Salim Q. Al-Naqib Dams and Water Resources Research Center, University of Mosul, Mosul, Iraq

DOI:

https://doi.org/10.46717/igj.56.1C.19ms-2023-3-30

Keywords:

Terraces, Mineralogy, Petrography, Geotechnique, New buildings, Faults.

Abstract

This study explores the third stage of the Tigris River terraces at the University of Mosul. Due to its importance, most of its buildings, especially the modern ones, were built on these terraces, and some engineering problems appeared in those buildings. The current study aims to know the petrography of the rocks, the emergence of these terraces, and the effects that they obtained as a result of various geological factors, as well as study their geotechnical properties and suggest ways to improve them. A geological map was prepared to distribute the river terraces to show the efficiency of the future build construction sites using a Digital Surface Model (DSM) 1m. The results showed the impact of the new tectonics on these terraces and their exposure to faults in the field and microscopic scales. The study showed the weakness of its geotechnical properties as a result of the high porosity, and the biological effect on it, as well as the weak bonding and cohesion between the gravel and the cement materials. The study suggests engineering treatments to improve the geotechnical properties, including grouting them with easily absorbent materials into the micro-pores and strengthening them by ramming to close them as much as possible.  

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Published

2023-03-24

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