Abstract
This paper presents results obtained from chain inclinometer measurement campaigns during tunnel construction. The applied system allows monitoring of settlements ahead of the face at the depth of the tunnel. These data supplement state-of-the-art 3D geodetic monitoring data to better understand the ground - support interaction. The evaluation of the data enables the optimization of the used support system, maintaining project relevant limitations as well as determining changes in the rock mass quality ahead of the face. Furthermore, the presented observations highlight relevant results for the design of pipe roof supported tunnels. (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.
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