Evolution des techniques de monitoring temps reel sur les chantiers de percement de tunnels urbains

摘要

The rapid development of real-time soil and structure instrumentation techniques makes it possible to put in place rapid feedback loops when digging new urban tunnels. These feedback loops include the monitoring system, and they may involve retrospective validation of the calculation assumptions, additional calculations, a change in tunnel construction methods, preventive consolidation work, or compensation grouting. This article describes various technological stages covered over the past ten years on major urban tunnel drilling projects (Amsterdam, London, Puerto Rico, Madrid, Hong Kong, Toulon).