Patent · US Expired

Apparatus for and method of driving tunnels

US4451176A · kind A · utility

3Cited by

6References

11Claims

0Family size

Assignee

Gewerkschaft Eisenhutte Westfalia GmbH · DE

Inventors

Gunter Flocke · Grafenau, DE
Hans Jutte
Klaus Linde · Grafenau, DE
Winfried Klamke · Grafenau, DE
Werner Hampel · Selm, DE

Key dates

Filing date	Jul 15, 1982
Grant date	May 29, 1984
Priority date	—
Expiry date	Jul 15, 2002

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE21D9/06
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

Apparatus for, and a method of, driving a tunnel utilizes a drive shield to support the forward end of the tunnel where debris material is removed. At the rear end of the drive shield, a lining is created to cover the exposed tunnel wall. This lining is produced by simply spraying concrete rearwardly directly between the space between multi-part formwork and the tunnel wall itself. The formwork may overlap with the drive shield. The formwork is advanced to follow the progress of the drive shield by removing part of the formwork from the rear and re-siting this part at the front end.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.