Method and apparatus for installation of an underground seal beneath a garbage dump
First Claim
1. A method for installing an underground seal beneath a garbage dump in a strip-like manner, comprising progressively working the earth in strips under the garbage dump at the front end of a driving shield, transporting the earth to the rear end of the driving shield, compressing the earth at said rear end, inserting a strip-like layer of a waterproof material under the protection of a cover of the driving shield, constructing and subsequently dismantling a supply tunnel pipe comprised of individual tunnel pipe sections under the protection of said cover while the driving shield is moved forward, and using the dismantled tunnel pipe sections of the one tunnel pipe to erect an additional tunnel pipe which is laterally displaced in direction toward the next strip-like layer opposite said one tunnel pipe behind the driving shield.
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Abstract
A method and apparatus for installing an underground seal beneath a garbage dump in a strip-like manner. The earth is worked in strips under the garbage dump by the front end of a driving shield. The earth is transported to the rear end of the driving shield, and is compressed at the rear end. A strip-like layer of a waterproof material is inserted, under the protection of a cover of the driving shield. A supply tunnel pipe is constructed and subsequently dismantled, comprised of individual tunnel pipe sections, under the protection of the cover while the driving shield is moved forward. The dismantled tunnel pipe sections of the tunnel pipe are used to erect an additional tunnel pipe which is laterally displaced in a direction toward the next strip-like layer opposite the first one tunnel pipe behind the driving shield. By stabilizing the dismantled pipe sections they need not be dragged along or transported out of the remaining tunnel pipe.
5 Citations
19 Claims
- 1. A method for installing an underground seal beneath a garbage dump in a strip-like manner, comprising progressively working the earth in strips under the garbage dump at the front end of a driving shield, transporting the earth to the rear end of the driving shield, compressing the earth at said rear end, inserting a strip-like layer of a waterproof material under the protection of a cover of the driving shield, constructing and subsequently dismantling a supply tunnel pipe comprised of individual tunnel pipe sections under the protection of said cover while the driving shield is moved forward, and using the dismantled tunnel pipe sections of the one tunnel pipe to erect an additional tunnel pipe which is laterally displaced in direction toward the next strip-like layer opposite said one tunnel pipe behind the driving shield.
- 8. Apparatus for installing an underground seal beneath a garbage dump comprising a driving shield for progressively working the earth under the garbage dump in adjacent strips including means for transporting the worked earth to the rear end of the driving shield, means for compressing the transported earth at said rear end, a cover for the driving shield, means for laying a strip-like layer of a waterproof material under the protection of the cover prior to disposing worked earth takeover, and a first tunnel pipe comprised of individual pipe sections located beside the driving shield, and means for dismantling the pipe sections progressively and constructing an additional pipe, using the dismantled pipe, laterally displaced from the first tunnel pipe behind the first tunnel pipe.
Specification