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Study on optimal grouting timing for controlling uplift deformation of a super high arch dam

Citation

Lin, P and Zhu, X and Li, Q and Liu, H and Yu, Y, Study on optimal grouting timing for controlling uplift deformation of a super high arch dam, Rock Mechanics and Rock Engineering, 49, (1) pp. 115-142. ISSN 0723-2632 (2016) [Refereed Article]

Copyright Statement

Copyright 2015 Springer Verlag

Official URL: http://dx.doi.org/10.1007/s00603 015 0732 z

DOI: doi:10.1007/s00603-015-0732-z

Abstract

A grouting model is developed for use during the grouting of the complex foundation of a super high arch dam. The purpose as to determine the optimal grouting timing and appropriate grouting pressure involved in controlling the uplift deformation of the dam. The model determines the optimal grouting time as the height of the arch dam increases with the concrete pouring, by checking the tensile stresses in the dam against standard specifications. The appropriate grouting pressures are given on the basis of the actual grouting pressures monitored during the upstream riverbed foundation grouting. An engineering procedure, applying the model, was then proposed and used during foundation grouting under the toe block of the Xiluodu super high-arch dam in south-western China. The quality of the foundation grouting was evaluated against the results from pressurized water permeability tests, acoustic wave velocity tests, elastic modulus tests and panoramic photographing of the rockmass on completion of the foundation grouting. The results indicated that the proposed grouting model can be applied to effectively reduce the uplift deformation and associated cracking risk for super high arch dams, and it can be concluded that the proposed engineering grouting procedure is a valuable tool for improving foundation grouting under the toe blocks of a super high arch dam.

Item Details

Item Type:Refereed Article
Keywords:super high arch dam, foundation grouting, uplift deformation, optimal grouting timing
Research Division:Engineering
Research Group:Resources Engineering and Extractive Metallurgy
Research Field:Geomechanics and Resources Geotechnical Engineering
Objective Division:Construction
Objective Group:Construction Processes
Objective Field:Civil Construction Processes
Author:Liu, H (Dr Hong Liu)
ID Code:99373
Year Published:2016
Web of Science® Times Cited:2
Deposited By:Engineering
Deposited On:2015-03-23
Last Modified:2017-11-03
Downloads:0

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