1. Rail tunnel. Proc. XII ECSMGE, Amsterdam, 1999. 1 2 3 4 Bezuijen A. 1997, Plastering and mud spurt during drilling grout pressure (bar) (in Dutch). BTL-report 27.
2. sures in front of the tunnel face are mainly caused by Bezuijen A., Talmon A.M. Kaalberg F.J. and R. Plugge, 2004.