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公开(公告)号:US3640076A
公开(公告)日:1972-02-08
申请号:US3640076D
申请日:1970-06-09
申请人: REES LTD WILLIAM F
CPC分类号: E21D11/10
摘要: A method of constructing a lined tunnel comprises the steps of excavating a short length of tunnel of internal diameter greater than the external diameter of the lining, erecting within the said length of tunnel a ring of three 120* lining segments, repeating the steps of excavating a short length of tunnel and erecting a lining ring within the short length, and pressing each successive ring into endwise engagement with the previously erected ring.
摘要翻译: 构造衬砌隧道的方法包括以下步骤:挖掘内径大于衬砌外径的较短长度的隧道,在所述隧道长度内竖立三个120°衬砌段的环,重复挖掘步骤 短长的隧道,并在短长度内竖立一个衬里环,并将每个连续的环按压成与先前架设的环的端接。