Patent · US Expired

Apparatus and method for tunnel construction with shield drive

US4557627A · kind A · utility

8Cited by

2References

2Claims

0Family size

Assignee

Locher & Cie AGZZ · CH

Inventors

Walter Schmid · Sindelfingen, DE
Hans Bertschinger · Stintenberger Straße, CH

Key dates

Filing date	Feb 12, 1982
Grant date	Dec 10, 1985
Priority date	—
Expiry date	Feb 12, 2002

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE21D9/0607
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

In tunnel construction with shield drive locational concrete is brought in stages directly behind the shield as tunnel lining. In order not to have to interrupt the shield progress during concreting it is proposed to provide a shield tail element consisting of a plurality of lamina movable relative to the shield, in addition to a shield tail element attached rigidly to the shield. This basically stands still during the continuous progress of the shield and is drawn forward into the shield by lamina only during the segment concreting, in order to remain immobile there relative to the earth until the next concreting stage.

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