Dam sealing at the power plant in Pucking next to the river Traun

Dam sealing at the
power plant in Pucking
In the course of regular checks on the dams of a power plant in
Pucking next to the river Traun leaks in the area of the existing
bitumen sealing, at the dam base and the sealing wall itself were
discovered at the upstream side.
290,5 m
289,3 m
Dam axis
Retention water level elevation
▲ Triple Mixing tool in use
Investor:
Energie AG, Linz
Contractor:
Felbermayr Bau GmbH & Co KG, Wels
32-38Ei
Statics:
BHM Ingenieure, Linz
Works:
• 6.250 m² DSM Cut-off wall
• 1.770 m² Soilcrete® Cut-off wall
Time of execution:
January - March 2010
Keller Grundbau Ges.m.b.H
Wienerstraße 131, Eingang A, Top 09.03
4020 Linz
Tel.+43 732 341658
Fax +43 732 341659
E-mail:[email protected]
www.KellerGrundbau.at
Existing cut-off wall
DSM-wall
Ground water table
280,0 m
impermeable layer
For this reason the planers designed a front sealing wall consisting
of a new sealing wall head and partial renewed bitumen sealing.
Keller Grundbau‘s job was to execute the sealing wall works with
the Deep-Soil-Mixing method. In areas with stones the sealing wall
was constructed with the Soilcrete® Jet-Grouting method.
In order to assure quality and erosion stability of the used sealing
wall grout a great number of compressive strength and permeability checks was executed in the constructed sealing wall. All of the
tests delivered good results.
Using multiple mixing tools, the enormous time required for the
execution of the construction works was reduced to a few weeks.
The hand-over to the client could take place even before spring.