Simplified parameter identification for circular tunnels

A fundamental component of the observational method in tunneling is the use of monitoring data to assess the adequacy of the employed design. Monitoring data can also be used to calibrate numerical or analytical models. In this paper a simplified back-analysis procedure to calibrate models based on a statistical framework is examined. The method can be quickly used as a first degree approximation of the actual problem using simple spreadsheet calculations. (A) This paper was presented at Safety in the underground space - Proceedings of the ITA-AITES 2006 World Tunnel Congress and the 32nd ITA General Assembly, Seoul, Korea, 22-27 April 2006. For the covering abstract see ITRD E129148. "Reprinted with permission from Elsevier".