发明授权
- 专利标题: Method and apparatus for use in tunnelling
- 专利标题(中): 用于隧道掘进的方法和装置
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申请号: US3788087D申请日: 1972-04-25
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公开(公告)号: US3788087A公开(公告)日: 1974-01-29
- 发明人: PATIN P
- 申请人: PATIN PIERRE
- 专利权人: Patin Pierre
- 当前专利权人: Patin Pierre
- 优先权: US24736372 1972-04-25
- 主分类号: E21D11/06
- IPC分类号: E21D11/06 ; E21D11/10 ; E21D19/04
摘要:
During tunnelling the terrain is supported by an annular fluid mass under pressure moved either continuously or stepwise. A lining compound is introduced outside the fluid mass and sets to form a tube. The tube may then be internally coated.
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