초록 ▼

A method and apparatus for the subsequent underground sealing of an area, preferably of dumps. With the method, it is possible to seal dumps underground. Working pipes are introduced from a region outside a dump body. The region of soil between the working pipes is loosened, and sealing material is

A method and apparatus for the subsequent underground sealing of an area, preferably of dumps. With the method, it is possible to seal dumps underground. Working pipes are introduced from a region outside a dump body. The region of soil between the working pipes is loosened, and sealing material is then introduced into this region, which solidifies to become a sheet-like sealing compound. With this method, in particular existing dump bodies can be sealed subsequently underground, without having to drill through the dump body. The apparatus for carrying out the method has a loosening device, and a feed device for the sealing material. The two devices are able to move in the region between two adjacent working pipes.

대표청구항 ▼

A method for subsequently producing an underground seal for an area, including the step of inserting sealing material to form a horizontal water impermeable barrier into the ground externally of and below said area which is to be sealed; the improvement therewith which includes the steps of: install

A method for subsequently producing an underground seal for an area, including the step of inserting sealing material to form a horizontal water impermeable barrier into the ground externally of and below said area which is to be sealed; the improvement therewith which includes the steps of: installing working pipes in a region below and externally of said area which is to be sealed; introducing sealing material into earth between adjacent ones of said working pipes, said sealing material hardening for forming said water impermeable barrier; introducing said sealing material in at least one jet, which is movable in a horizontal plane; providing connecting pipes for connecting said work pipes, and introducing the sealing material to form a complete horizontal water-impermeable barrier by breaking through the walls of said connecting pipes with said at least one jet movable in the horizontal plane.