公开(公告)号：EP2315915A1

公开(公告)日：2011-05-04

申请号：EP09793729.6

申请日：2009-01-30

申请人： McNally, Michael P.

发明人： McNally, Michael P.

IPC分类号： E21D9/11 ,  E21D11/40 ,  E21D11/18

CPC分类号： E21D9/04 ,  E21D9/112 ,  E21D9/12

摘要： A TBM having a cylindrically shaped member located on said TBM just behind the rotating boring head, said member being of similar diameter as said tunnel and comprising sectionalized components so as to be adjustable in diameter, said member having a plurality of steel angle members welded to the surface of the top-most component so as to extend axially along the length of said cylindrically shaped member, said steel angle members forming axially extending receptacles therein.