Global Patent Index - EP 1035300 A1

EP 1035300 A1 2000-09-13 - Drainage System for use in tunnels

Title (en)

Drainage System for use in tunnels

Title (de)

Tunnelentwässerungseinrichtung

Title (fr)

Système de drainage pour tunnels

Publication

EP 1035300 A1 (EN)

Application

EP 99104683 A

Priority

  • EP 99104683 A
  • CA 2265104 A
  • DE 19738488 A

Abstract (en)

During tunnel construction, the water emerging at various locations in the rock wall 2 must be removed through a drainage system 1 so that it does not endanger the shotcrete or other securing coating applied to it. This is achieved with a manufacturing process in which HDPE films of high impact resistance and tear resistance are heated in an appropriate form for a deep drawing process and drawn over a positive form by application of a vacuum, and so moulded that the same surface contouring is produced over the entire length in the arch area with smooth lateral parts. The shaped length 5 consists of an arch-shaped middle section 18 having sine-wave shaped ribs 9, 10, 11 and lateral parts 6, 7 running at an angle to this having no contouring, with single ribs 21 at predetermined intervals, running right across to the edges 19, 20 of the shaped length 5, which permit bending to either side. Shaped lengths 5 of this kind and moulded parts 12, 13, 14 are also not impaired or damaged by application of shotcrete, so that thereafter, the water which would otherwise endanger the shotcrete can be safely and lastingly conducted away. <IMAGE>

IPC 1-7 (main, further and additional classification)

E21F 16/02; E21D 11/38

IPC 8 full level (invention and additional information)

E21D 11/38 (2006.01); E21F 16/02 (2006.01)

CPC (invention and additional information)

E21D 11/383 (2013.01); E21F 16/02 (2013.01)

Citation (applicant)

Citation (search report)

Designated contracting state (EPC)

AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

EP 1035300 A1 20000913; EP 1035300 B1 20030910; AT 249570 T 20030915; CA 2265104 A1 20000909; CH 691697 A5 20010914; DE 19738488 A1 19990311; DE 69911163 D1 20031016

INPADOC legal status


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