CONSTRUCTION OF THE CUAJONE TUNNELS, PERU
The construction is discussed of five rock tunnels in a 27 km long tunnel system in Peru. The cross-section of the tunnels inside the clearance line was 38 sq M to accommodate a single line of standard gauge railway track. Although geological studies predicted competent granodiorite with almost no support or rockbolting requirements, the application of shotcrete over almost the total length of the tunnels was required to prevent loosening of the rock joints. Another corrective action found necessary was to change the tunnel section and the shape of the steel sets from an "inverted U" to a "horse-shoe" section with curved walls to resist ground pressure. The article also considers the choice of drilling equipment, and ground support systems with particular emphasis on shotcrete application and control. The effect of changing geological conditions on equipment used and contractors' claims are considered. /TRRL/
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/issn/0041414X
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Corporate Authors:
Morgan-Grampian Limited
30 Calderwood Street
London SE18 6QH, England -
Authors:
- Peyfuss, K F
- Publication Date: 1977-1-2
Language
- English
Media Info
- Features: Figures; Photos;
- Pagination: p. 31-35
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Serial:
- Tunnels & Tunnelling International
- Volume: 9
- Issue Number: 1
- Publisher: Progressive Media Markets, Ltd
- ISSN: 0041-414X
Subject/Index Terms
- TRT Terms: Construction management; Design; Drilling; Drilling machines; Earth pressure; Equipment; Excavation and tunneling; Geological events; Geology; Ground handling; Mines; Railroad transportation; Railroads; Rocks; Shotcrete; Steel; Structural design; Timbering; Transverse joints; Tunnel lining; Tunnels
- Uncontrolled Terms: Tunnel design
- Geographic Terms: Peru
- Old TRIS Terms: Drilling equipment; Geological conditions; Ground support; Railway
- ITRD Terms: 3666: Construction method; 9011: Design (overall design); 3871: Drilling; 3674: Equipment; 5117: Mine; 8087: Peru; 4154: Rock; 4730: Shotcrete; 4542: Steel; 3605: Timbering; 3374: Tunnel; 3385: Tunnel lining
- Subject Areas: Aviation; Bridges and other structures; Construction; Design; Geotechnology; Highways; Railroads; I25: Design of Tunnels; I54: Construction of Tunnels;
Filing Info
- Accession Number: 00163874
- Record Type: Publication
- Source Agency: Transport and Road Research Laboratory (TRRL)
- Report/Paper Numbers: Analytic
- Files: ITRD, TRIS
- Created Date: Feb 16 1978 12:00AM