Natural Hazards

, Volume 99, Issue 2, pp 991–1005 | Cite as

Rockfall hazards assessment along the Aswan–Cairo highway, Sohag Governorate, Upper Egypt

  • El-Sayed Sedek Abu SeifEmail author
  • Abdulelah A. Bahabri
Original Paper


The geotechnical evaluation of rockfall hazards along the Aswan–Cairo highway, Sohag Governorate, Upper Egypt has been achieved throughout a variety of field investigations and lab tests on the slopes and rock cut faces of Lower Eocene Plateau limestone. The studied Aswan–Cairo highway is located in a mountainous area and surrounded on both sides by highly sheared limestone plateau possesses steep slopes and swelling clayey hosted bands. The clayey bands are characterized by highly swelling potentiality that considered as instability and weakness planes along which the limestone blocks will be downward fallen. Based on slope height and angle, the studied slopes are mostly considered instable. Kinematically, the Lower Eocene limestone blocks have planer and wedge failure modes. According to the estimated values of the coverage distance and rebound amplitude, ditches must be dug (2 m width and 1.5 m depth) to reduce the rebound amplitude height of falling blocks and catch these blocks to avoid them to reach the highway toe. Ditches can be filled with sands to will absorb the falling blocks kinetic energy as well as rockfall barrier must be constructed at the most hazards sites to retain the falling blocks away from the road toe.


Rockfalls Aswan–Cairo highway Sohag Governorate Upper Egypt 



This work was supported by the Deanship of Scientific Research (DSR), at King Abdulaziz University, Jeddah, under grant no (145-115-D1436). The authors, therefore, gratefully acknowledge the DSR for technical and financial support. Also, the authors are deeply grateful to Professor Thomas Glade (Editor in Chief of Natural Hazards Journal) as well as the anonymous reviewers for insightful comments and criticism that improved the original manuscript.


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Copyright information

© Springer Nature B.V. 2019

Authors and Affiliations

  1. 1.Faculty of Earth SciencesKing Abdulaziz UniversityJeddahSaudi Arabia
  2. 2.Geology Department, Faculty of ScienceSohag UniversitySohagEgypt

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