THE SWEDISH APPROACH TO ROCK SUPPORT

Swedish experience shows that a proper understanding of the process of tunnel support using a thin layer of shotcrete, coupled with modern methods of application should lead to a wider application of the system. The author evaluates the design approach to shotcrete support based on measurements, rock classification and experience. The important advantages of shotcreting, either as a temporary or permanent support are given. These include economy, adaptability, no need for shuttering or complicated equipment. Recent developments in Swedish remote-controlled shotcreting equipment are described. The operation of the robot system is outlined; its major advantage is in its capacity to tackle and pass a cave-in quickly and efficiently. A reliable combined transporting and batching system, the trixer, has been developed. The use of liquid accelerators and proportioning pumps are described. Research into the use of steel-fibre reinforcements is outlined. (TRRL)

• Authors:
  • Kramers, M
• Publication Date: 1978-9

Media Info

• Features: Figures; References;
• Pagination: p. 31-35
• Serial:
  • Water Power
  • Publisher: IPC Electrical Electronic Press Limited

Subject/Index Terms

• TRT Terms: Classification; Construction management; Equipment; Fiber reinforced concrete; Measurement; Methodology; Remote control; Rocks; Shotcrete; Steel wire fabrics; Tunnel supports; Tunnels
• Uncontrolled Terms: Support (Tunnel)
• Geographic Terms: Sweden
• ITRD Terms: 8513: Classification; 3674: Equipment; 6136: Measurement; 9102: Method; 3893: Remote control; 4154: Rock; 4730: Shotcrete; 8109: Sweden; 3605: Timbering; 3374: Tunnel
• Subject Areas: Bridges and other structures; Construction; Geotechnology; Highways; I54: Construction of Tunnels;

Filing Info

• Accession Number: 00316947
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Files: ITRD, TRIS
• Created Date: Feb 6 1981 12:00AM