2I.S. Frolov, I. E. Krouk. A new concept of building subway shallow lines [ J ]. Pmcee, cling of the world tun- nel congress 98 oil tunnels and metropolises,volume 1 : 145-148.
3Hiroyuki Kamata, Yoshio Matsumoto. Connectional de- sign and feasibility study of a new tunneled station with multi-circular face shield ( MF shield) [J]. Quarterly Report of RTRL, 1992.
4Hiroyuki K,Yoshio M. Connectional design and feasibility study of a new tunneled station with multi-circular face shield(MF shield) [ R]. [ S. l. ]: [ s. n. ]. 1992.
5Gao D Z, Wei D D, Hu Z X. Geoteehnical properties of Shanghai soils and engineering applications, ASTM, STP 923, 1986, pp: 161-178.
