Method and apparatus for use in a slurry filled trench for providing a sealing shield therein
AssigneeNiederberg-Chemie GmbH
InventorsAloys Schlutter, Klaus Kaewert, Christian Witolla, Bernd Kopp, Hans-Jurgen Rosler
Life of this patent
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Abstract
According to the invention, to connect sealing strips overlapping one another which are located in a trench in the ground. A housing is placed at the overlap region which spans this region and seals the region. Next the housing is pumped empty of a filling agent, such as bentonite which is used to stabilize the trench. The overlap region is then cleaned for welding, and can then be welded by means of commercially available welding equipment.
Claims37
Method for use in an underground trench containing a slurry material, said method being for preparing for fastening of sealing strips placed in the underground trench, the underground trench having contained therein at least the slurry material for stabilizing the walls of the underground trench, said method comprising the steps of:
- (a) digging an underground trench;
- (b) at least partially filling the underground trench with a slurry material therein;
- (c) lowering housing means into the slurry in the underground trench;
- (d) lowering sealing strips vertically into the underground trench to locate the edges of adjacent strips in position to join adjacent edges of the adjacent strips to one another;
- (e) placing said housing means on both sides of the sealing strips adjacent at least one of the adjacent edges of the adjacent strips to be joined;
- and
- (f) pumping out the slurry material from within said housing means.
Method for use in an underground trench containing a slurry material, said method being for fastening sealing strips placed in the underground trench having contained therein at least the slurry material for stabilizing the walls of the underground trench, said method comprising the steps of:
- (a) lowering sealing strips vertically into the underground trench to locate the edges of at least two adjacent strips in positions to join adjacent edges of the at least two adjacent strips to one another;
- (b) placing housing means on both sides of the sealing strips adjacent at least one of the adjacent edges of the adjacent strips to be joined;
- (c) pumping out the slurry material in said housing means;
- and
- (d) joining the edges of at least two adjacent strips.
Method for use in an underground trench containing a slurry filler material for fastening sealing strips placed in the underground trench having at least the slurry filler material for stabilizing the walls of the underground trench, said method comprising the steps of:
- (a) lowering sealing strips lengthwise and vertically into the underground trench to locate adjacent edges of adjacent strips in positions to join the edges of the adjacent strips to one another;
- (b) placing housing means on both sides of the sealing strips adjacent at least one of the adjacent edges of the adjacent strips to be joined;
- (c) pumping out filler material from within said housing means;
- and
- (d) joining the edges of at least two adjacent strips.
Apparatus for fastening sealing strips in an underground trench with first and second walls and having at least a filler material for stabilizing the walls of the underground trench comprising:
- (a) sealing strips for being lowered by lowering apparatus lengthwise and vertically into the underground trench to locate the edges of adjacent strips in positions to join the edges of the adjacent strips to one another;
- (b) housing means for being positioned on both sides of the sealing strips and adjacent at least one of the adjacent edges of the adjacent strips to be joined;
- (c) pumping means for pumping out said filler material from within said housing means;
- and
- (d) joining means for joining the edges of at least two adjacent strips wherein said housing means comprises two housing parts, one for being disposed on one side of the strips and the other for being disposed on another side of the strips;
- said housing means having two halves for being placed on each side of one of said at least one of the adjacent edges of the adjacent strips to be joined.
Apparatus for fastening sealing strips in an underground trench with first and second walls and having at least a filler material for stabilizing the walls of the underground trench comprising:
- sealing strips for being lowered by lowering apparatus lengthwise and vertically into the underground trench to locate the edges of adjacent strips in positions to join the edges of the adjacent strips to one another;
- housing means for being positioned on both sides of the sealing strips and adjacent at least one of the adjacent edges of the adjacent strips to be joined;
- pumping means for pumping out said filler material from within said housing means;
- and
- joining means for joining the edges of at least two adjacent strips wherein said housing means comprises two housing parts, one for being disposed on one side of the strips and the other for being disposed on another side of the strips;
- said housing means having two halves for being placed on each side of one of said at least one of the adjacent edges of the adjacent strips to be joined;
- and
- said housing means simultaneously forming a bulkhead closing the trench in the vertical direction, is made up of individual segments in the vertical direction, has a guide for centering the strip edges, and forms a component of the lowering apparatus for the strips.
Dependencies are inferred from the claim text.