摘要 |
<P>PROBLEM TO BE SOLVED: To provide a tunnel boring machine that enables a simple means to prevent a consolidated material such as concrete and backfill grout, running round to a cutter head side, from being consolidated on a cutter head or a hood of a boring machine body. <P>SOLUTION: A tunnel boring machine performs excavation while rotating a cutter head 18 provided in a front section of a boring machine body 11. An extensible cleaning rod 55 is disposed on at least either of a back portion of the cutter head 18 and the inside of a hood 12a of the boring machine body 11. The cleaning rod 55 approaches and makes an entry into a gap C between a back surface of the cutter head 18 and a leading end of the hood 12a during the extension of the cleaning rod 55, so as to be capable of removing a consolidated material such as concrete adhering to the back surface of the cutter head 18 and the leading end of the hood 12a under the rotational state of the cutter head 18. <P>COPYRIGHT: (C)2012,JPO&INPIT |