Document ID (ISN) | 37019 |
CIS number |
82-249 |
ISSN - Serial title |
0010-244X - Cahiers des Comités de prévention du bâtiment et des travaux publics |
Year |
1981 |
Convention or series no. |
|
Author(s) |
De Gélis B. |
Title |
A machine for spraying concrete in tunnels |
Original title |
Une machine à projeter le béton en galerie [in French] |
Bibliographic information |
Mar.-Apr. 1981, No.2, p.51-53. Illus. |
Abstract |
Review of the hazards and working conditions during wall consolidation in a newly driven tunnel, and description of a new technical development to deal with the problems of spraying wet concrete (a gun shooting ready-mixed concrete). The machine comprises 3 sub-units: 1. a vehicle on which are mounted the pumps, tanks and hoses; 2. the jib on which is mounted the cabin fitted with a telescopic boom carrying the concrete gun; 3. the concrete gun itself. Only the boom carrying the concrete gun is actually in the danger zone; the control cab is located in the section of the tunnel where the walls have already been consolidated, i.e. are safe from any falling rock. |
Descriptors (primary) |
tunnelling; shotcreting; concrete work; support of mineworkings |
Descriptors (secondary) |
protection against falls of rock; booths; description of equipment |
Document type |
D - Periodical articles |
Subject(s) |
Construction industry
|
Broad subject area(s) |
|
Browse category(ies) |
Surface treatment
|