专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

11. 发明专利

JPH02210189A SHIELD MACHINE 失效
公开(公告)号：JPH02210189A
公开(公告)日：1990-08-21
申请号：JP2924889
申请日：1989-02-08
申请人： SHIMIZU CONSTRUCTION CO LTD
发明人： HAGIWARA HIDEKI , GOTO TORU , OKAZAKI MASAYOSHI , YOSHIKAWA AKIRA , GOTO SHIGERU , AZUMA YOJI
IPC分类号： E21D9/06 , E21D9/08 , E21D9/087
摘要： PURPOSE:To reduce term of works and construction cost by a method wherein in a construction work in which a tunnel the size of which is partially increased is continuously excavated, a slave shield machine capable of being mounted and demounted to and from the interior of a parent shield machine and movable forward and backward along an axis is used in common. CONSTITUTION:During a construction work for a tunnel for a subway in which a large station part P and a small railroad track part R are continuously excavated, two parent and slave shield machines 12 and 13 are moved forward in an integrally formed state from a starting vertical shaft 21 as a ground is excavated by means of cutters 16 and 17. The large station part P is then formed, and consecutively the parent and slave shield machines 12 and 13 are released from coupling and only the slave shield machine 13 is moved forward to continuously form the small railroad track part R. This method eliminates the need to excavate a starting vertical shaft again at a change spot of an excavation size being a boundary between the station part P and the railroad track part R, and enables reduction of a term of works and a construction cost resulting from shortening of a process.

IPRDB

热门服务

关于我们

友情链接

联系方式