DFI Journal - The Journal of the Deep Foundations Institute

Volume 6, Issue 1, January 2012
DOI: 10.1179/dfi.2012.001

All Journal papers are free to DFI members.
If you are a member, please click on the "Login" link at the top of this page to to download this paper.

Not a member? Join here to get access to all papers or click the purchase button below to access this paper only.

Jet Grouting and Safety of Tuttle Creek Dam
Article Type: Case Study

Stark, T. D., Axtell, P. J., Walberg, F., Dillon, J., Bellew, G. & Mathews, D. L.


Jet grouting has increasingly become a ground improvement technology used to address seepage concerns and provide strength improvement to soils underlying dams. The technique of jet grouting uses high pressure/volume jet fluids to erode existing soil, evacuate some or most of the soil, and mix the remaining cuttings with cement slurry to form soilcrete. While considered a useful technology, this paper discusses some of the problems that can develop while jet grouting in or below a dam with an operational reservoir and seepage condition. Jet grouting experience at Tuttle Creek Dam indicates concerns with respect to ground fracture; spoil return, column diameter consistency, and homogeneity of resulting soilcrete. Recommendations are presented to increase monitoring of downhole parameters during jet grouting to better understand the downhole pressures and soil response during jet grouting.

jet grouting, ground improvement, seepage, dams, Tuttle Creek Dam