Method of producing a subterranean structure
OwnerGerhard Sauerinventor
Life of this patent
Estimating the term…
Abstract
In a method of producing a subterranean structure comprises the steps of excavating a ditch or hole in the ground to a desired subterranean level, placing the ceiling directly on the excavated ground at this level, filling the hole in the ground, and driving an arched tunnel into the ground below the ceiling, the ceiling is fixed in position and the ground is stabilized before the hole is filled and the arched tunnel is driven into the ground, by anchoring the ceiling with retaining elements projecting downwardly from the ceiling into the ground below, and arranging the retaining elements to form piles protecting the tunnel arch at respective sides thereof and preventing earth from crashing through the tunnel arch.
Claims6
A method of producing a subterranean structure with a ceiling in the ground, which comprises the sequential steps of
- (a) excavating a ditch in the ground to a desired subterranean level, the ditch having a bottom with respective longitudinal edges at said level,
- (b) placing the ceiling directly on the bottom of the excavated ditch, the ceiling having two opposite ends and respective longitudinal edges substantially coinciding with the longitudinal edges of the ditch bottom,
- (c) fixing the ceiling in position on the ditch bottom and stabilizing the ground below said level by anchoring the ceiling with retaining elements projecting along the longitudinal edges of the ceiling downwardly from the ceiling into the ground below said level,
- (d) filling the ditch, and
- (e) driving an arched tunnel into the ground below and along the anchored ceiling between the retaining elements, the retaining elements forming piles protecting the arched tunnel at respective sides thereof and preventing earth from crashing through the arched tunnel, the ceiling resting with its two opposite ends respective on the arched tunnel and on the existing ground, and the ceiling with the retaining elements forming a protective cap over the arched tunnel.
Dependencies are inferred from the claim text.