The Ingenieur Vol 57 January-March 2014 The Ingenieur Vol 57 January-March 2014 | Seite 19

Conclusion Mapping work was carried out documenting the experiences and problems encountered during the tunnel excavation. Figure 19 shows some of the mapping work that was done along the tunnel route. Finally, the excavation of this unusually long and deep tunnel presented a number of interesting technical challenges that have or are being overcome. Excavation is currently 91.8% complete and is scheduled to be completed in 2014. We believe this project will be a useful benchmark for future tunnel projects in Malaysia and elsewhere in the world. Figure 19 – Mapping of Tunnel Information Appendix 1     17