Akutagawa, S. / 1998 / A consideration on tunnel pressure derived from the Terzaghi’s formula based on an equilibrium assumption in a limit state / Proceedings of Tunnel Engineering :95~100 Barla, G. / 2000 / Analysis and design methods of tunnels in squeezing rock conditions / Rivista Italiana Di Geotecnica, 1/2000 :22~29 Boidy, E. / 2002 / Back analysis of time-dependent behaviour of a test gallery in claystone / Tunnelling and Underground Space Technology 17(4):415~424 BTS/ICE / 2004 / Tunnel lining design guide / Thomas Telford Ltd. Carde, C. / 1997 / Effect of the leaching of calcium hydroxide from cement paste on mechanical and physical properties / Cement Concrete Research 27(4):539~550