Location
Arlington, Virginia
Date
15 Aug 2008, 11:00am - 12:30pm
Abstract
Construction of dam foundation of Bisalpur masonry dam on river Banas was posing a problem due to presence of medium and coarse sand in the river bed. In post monsoon period, though there remains very little surface flow in the river, but ipso-facto entire river flows through 10 to 12 m thick sand bed. Hence RCC diaphragm wall was conceived to play dual role i.e. to cut off the flow through the sand bed and also to act as coffer dam to divert the surface flow in the diversion channel. 60 cm thick RCC diaphragm wall has been constructed and used as cut off as well as coffer dams on u/s and d/s side of main dam. Wherever depth of diaphragm wall was less than 12 m, post tension anchors of capacity 135 Tons to 170 Tons at an inclination of 45 degrees, were provided through the diaphragm wall and sand bed and grouted in rock. Wherever depth of diaphragm wall was more than 12 m, it was designed as T shaped wall on principle of counter fort retaining wall. This coffer dam cum cut off wall had served its purpose and facilitated the construction of foundation and main dam of Bisalpur project.
Department(s)
Civil, Architectural and Environmental Engineering
Meeting Name
6th Conference of the International Conference on Case Histories in Geotechnical Engineering
Publisher
Missouri University of Science and Technology
Document Version
Final Version
Rights
© 2008 Missouri University of Science and Technology, 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
Gill, Ravindra and Bidasaria, Mahavir, "Anchored RCC Diaphragm Wall Coffer Dam for Bisalpur Dam (A Case - Study)" (2008). International Conference on Case Histories in Geotechnical Engineering. 3.
https://scholarsmine.mst.edu/icchge/6icchge/session05/3
Anchored RCC Diaphragm Wall Coffer Dam for Bisalpur Dam (A Case - Study)
Arlington, Virginia
Construction of dam foundation of Bisalpur masonry dam on river Banas was posing a problem due to presence of medium and coarse sand in the river bed. In post monsoon period, though there remains very little surface flow in the river, but ipso-facto entire river flows through 10 to 12 m thick sand bed. Hence RCC diaphragm wall was conceived to play dual role i.e. to cut off the flow through the sand bed and also to act as coffer dam to divert the surface flow in the diversion channel. 60 cm thick RCC diaphragm wall has been constructed and used as cut off as well as coffer dams on u/s and d/s side of main dam. Wherever depth of diaphragm wall was less than 12 m, post tension anchors of capacity 135 Tons to 170 Tons at an inclination of 45 degrees, were provided through the diaphragm wall and sand bed and grouted in rock. Wherever depth of diaphragm wall was more than 12 m, it was designed as T shaped wall on principle of counter fort retaining wall. This coffer dam cum cut off wall had served its purpose and facilitated the construction of foundation and main dam of Bisalpur project.
