Abstract
To successfully complete a tunnel project a coherent and transparent geotechnical
design procedure is required.
Following general steps have to be followed:
• Definition of a route corridor
• Geological/geotechnical investigation
• Rock and rock mass characterization
• Assignment of parameters to the route corridor
• Determination of ground behaviours along each selected alignment
• Allocation of possible construction methods and costs to behaviour types
• Comparison of different alignment and construction method options in terms of feasi-
bility, risk and costs
To allow an objective and unbiased assessment of the optimal combination of alignment and
construction methods, a consistent procedure has to be followed. The process proposed here
uses a combination of analysis and expert knowledge for the determination of key parameters,
the assessment of ground behaviour types, and the assignment of construction measures to the different ground behaviours. Also the natural scatter of the rock mass parameters can be con sidered in the procedure, using probabilistic methods.
The contribution shows the basic procedure of the design process. The application is demon-
strated using a case history of a 23 km long water conveyance tunnel in Thailand, where dif-
ferent excavation options were analyzed.
design procedure is required.
Following general steps have to be followed:
• Definition of a route corridor
• Geological/geotechnical investigation
• Rock and rock mass characterization
• Assignment of parameters to the route corridor
• Determination of ground behaviours along each selected alignment
• Allocation of possible construction methods and costs to behaviour types
• Comparison of different alignment and construction method options in terms of feasi-
bility, risk and costs
To allow an objective and unbiased assessment of the optimal combination of alignment and
construction methods, a consistent procedure has to be followed. The process proposed here
uses a combination of analysis and expert knowledge for the determination of key parameters,
the assessment of ground behaviour types, and the assignment of construction measures to the different ground behaviours. Also the natural scatter of the rock mass parameters can be con sidered in the procedure, using probabilistic methods.
The contribution shows the basic procedure of the design process. The application is demon-
strated using a case history of a 23 km long water conveyance tunnel in Thailand, where dif-
ferent excavation options were analyzed.
| Original language | English |
|---|---|
| Title of host publication | CD-ROM Proceedings of the ECCOMAS Thematic Conference on Computational Methods in Tunnelling (EURO:TUN 2007) |
| Place of Publication | Wien |
| Publisher | Technische Universität Wien |
| Number of pages | 10 |
| ISBN (Electronic) | 978-3-9501554-7-1 |
| Publication status | Published - 2007 |
| Event | EURO:TUN 2007: EURO:TUN 2007 - Wien, Austria Duration: 27 Aug 2007 → 29 Aug 2007 |
Conference
| Conference | EURO:TUN 2007 |
|---|---|
| Abbreviated title | EURO:TUN 2007 |
| Country/Territory | Austria |
| City | Wien |
| Period | 27/08/07 → 29/08/07 |
Treatment code (Nähere Zuordnung)
- Application