32
Geotechnical News • June 2016
THE GROUT LINE
Paolo Gazzarrini
GIN Method (part III)
Clif Kettle & Maren Katterbach
Case History 3 - Wimbleball Dam, England, 2003, 2014
Wimbleball dam is a lightweight but-
tress dam which has suffered seepage
through the grout curtain, and through
the left abutment ever since construc-
tion. Seepage had been increasing
steadily since the construction in
1979 up to 2003, despite at least two
attempts at remedial grouting with
classical techniques.
Because of the poor quality of the
bedrock a very large excavation had
been undertaken during the initial
construction of the dam in 1979. The
Figure 1. Wimbleball Dam foundation excavation.
ERRATA CORRIGE of the March 2016 Grout Line issue
1) The title of the cover page states: ”Seepage evidence at Carno Dam,
South Wales”. It might not have not been clear that the seepage had occurred
BEFORE the grouting treatment. After the grouting treatment the seepage
disappeared.
2) There was some confusion at pages 45 and 46.
2.1) First of all figure 7 is referring to Carno Dam, and figures 8 to 11 to Lee
tunnel.
2.1) In figures 8 to 11 (Lee Tunnel) some captions were incorrect.
Figure 11 should be figure 8 and figure 8 should be figure 9.
Consequently, the correct sequence is: figure 11, 8, 9 and 10.
The complete and corrected article is downloadable at:
.
com/Articles/42GroutlineMarch 2016.pdf
Overture
43rd episode of the Grout Line and
for this issue the third and final part of
the article prepared by by Clif Kettle,
Technical Manager, Bachy Soletanche
Ltd., Burscough, Lancashire, UK,(clif.
) and Maren Kat-
terbach, Project Engineer, Lombardi
Engineering Ltd., Minusio, Switzer-
land (
.
Before the article, an “errata corrige”
related to the March 2016 issue
As usual, I make the same request,
asking you to send me your grouting
comments or grouting stories or case
histories. My coordinates remain:
Paolo Gazzarrini, paolo@paologaz.
com,
or paolo@
groutline.com.
Ciao! Cheers!
