Method of producing a subterranean structure
US4648743A · kind A · utility
Inventor
Key dates
| Filing date | Oct 23, 1985 |
| Grant date | Mar 10, 1987 |
| Priority date | — |
| Expiry date | Oct 23, 2005 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE02D29/055
- WIPO fieldCivil engineering
- WIPO sectorOther fields
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.