Date
02 Jun 1988, 10:30 am - 3:00 pm
Abstract
After selection of the site for this major hydroelectric project on the Upper Parana River, initial borings in the river bed revealed an extremely fractured zone near the base of the dense basalt flow on which the main dam would be founded. This zone was later seen to correspond to intersecting faults beneath the river bed, therefore upon dewatering the river channel several exploratory tunnels were driven parallel and perpendicular to the dam axis, foreseeing their incorporation into an elaborate "shear key" system to prevent renewed movements of the shear zones. The tunnel grid was backfilled with concrete through holes drilled from the foundation surface and grouted at low pressures.
Department(s)
Civil, Architectural and Environmental Engineering
Meeting Name
2nd Conference of the International Conference on Case Histories in Geotechnical Engineering
Publisher
University of Missouri--Rolla
Document Version
Final Version
Rights
© 1988 University of Missouri--Rolla, All rights reserved.
Creative Commons Licensing
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.
Document Type
Article - Conference proceedings
File Type
text
Language
English
Recommended Citation
Cabrera, John G., "Foundation Investigation and Treatment for the Main Dam, Italpu Project" (1988). International Conference on Case Histories in Geotechnical Engineering. 15.
https://scholarsmine.mst.edu/icchge/2icchge/2icchge-session2/15
Foundation Investigation and Treatment for the Main Dam, Italpu Project
After selection of the site for this major hydroelectric project on the Upper Parana River, initial borings in the river bed revealed an extremely fractured zone near the base of the dense basalt flow on which the main dam would be founded. This zone was later seen to correspond to intersecting faults beneath the river bed, therefore upon dewatering the river channel several exploratory tunnels were driven parallel and perpendicular to the dam axis, foreseeing their incorporation into an elaborate "shear key" system to prevent renewed movements of the shear zones. The tunnel grid was backfilled with concrete through holes drilled from the foundation surface and grouted at low pressures.
