Slot Cutting of the Lago Colombo Dam, Affected by Swelling Deformation, to Bring the Behavior Back from Arch to Gravity

  • M. SbarigiaEmail author
  • F. Zinetti
  • M. Hernandez-Bagaglia
Conference paper
Part of the Lecture Notes in Civil Engineering book series (LNCE, volume 10)


This paper deals with the rehabilitation and maintenance of the Lago Colombo Dam, owned by Enel S.p.A. since 1962. Comprehensive studies of the dam condition and behaviour pointed out the necessity of important rehabilitation works, to improve the safety conditions and to ensure the efficiency of the dam. Its original gravity behaviour was restored and the arch effect was reduced. The final solution consisted in the crack grouting with special self-compacting mineral mortar and in the carrying out of two new vertical structural joints, by means of slot cutting (2 cm wide) with diamond wire. Others additional improvement works were also carried out. The works started in 2010 and were successfully completed in 2011; in summer 2012 and 2013, the reservoir was re-impounded and the dam behaviour monitored after the rehabilitation. The dam monitoring of the last years has confirmed the change of dam behaviour as required in the rehabilitation project.


Rehabilitation Cutting with diamond wire Crack grouting  Dam monitoring 


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Copyright information

© Springer International Publishing AG, part of Springer Nature 2018

Authors and Affiliations

  • M. Sbarigia
    • 1
    Email author
  • F. Zinetti
    • 2
  • M. Hernandez-Bagaglia
    • 2
  1. 1.Enel – Hydraulic and Civil EngineeringRomeItaly
  2. 2.Enel – Hydraulic and Civil EngineeringMilanItaly

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