| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a construction method of a tunnel easily adjusting an error between a main tunnel and a branch tunnel in a width extended part and a joint part of the tunnel. <P>SOLUTION: In this construction method, a clearance is formed between opposing end faces of a lining segment 6 and a connection segment 9 to make an interval between end parts on an upper side larger than an interval between end parts on a lower side, an adjusting board 73 having end parts being parallel with the end parts of the lining segment 6 and the connection segment 9 is dropped in between both of the segments 6 and 9, and then concrete 20 is placed between both of the segments. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
