Method and apparatus for forming tunnels for transport routes
US10337326B2 · kind B2 · utility
0Cited by
3References
14Claims
0Family size
Inventor
Key dates
| Filing date | Dec 22, 2015 |
| Grant date | Jul 2, 2019 |
| Priority date | — |
| Expiry date | Dec 22, 2035 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE02D29/045
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method and apparatus for forming a tunnel structure at a relatively shallow depth from the surface, which tunnel can be used as a replacement or additional transport route to an existing transport route (2) which is already formed on the surface. The method comprises the steps of forming two spaced apart access tunnels (hatched portion) to expose the tracks, introducing units (22) comprising side walls portions (26, 28) and a roof section (30) by moving the units along the tracks while excavating the soil in which the tunnel is to be formed is in advance of the leading edge of the units.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.