This text describes topics discussed at the conference, including: tunnelling and construction in soft ground and rocks; geological investigations; tunnelling machines; planning for underground infrastructure; safety issues and environmental and social aspects of underground development.3.3 Access Adi\ Due to space constraints in the 4.8m diameter shaft the breakout of the tunnel eye was done manually. ... sufficient room to permit the use of a 1.5- T mini-excavator for excavation using a hydraulic breaker and by changing to a ... The round length was 1000mm and the sequence of construction for one 1000mm round was top heading, bench, top heading, bench, and then a double invert.
|Title||:||Tunnels and Underground Structures: Proceedings Tunnels & Underground Structures, Singapore 2000|
|Author||:||J. Zhao, J.N. Shirlaw, Krishnan R.|
|Publisher||:||CRC Press - 2000-01-01|