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1. 发明专利

JP2001012181A SHAFT CONSTRUCTION METHOD OF SHIELD PRECEDING ARRIVAL PART 失效
公开(公告)号：JP2001012181A
公开(公告)日：2001-01-16
申请号：JP18360099
申请日：1999-06-29
申请人： KUMAGAI GUMI CO LTD
发明人： MATSUMOTO KUNIO , NISHIZAWA HISAO , IWASAKI MORIHIKO , KAWAMURA YOSHIYUKI , NISHINOMIYA KOYO , KOBAYASHI HIROKI
IPC分类号： E21D5/00 , E21D9/06
摘要： PROBLEM TO BE SOLVED: To early and securely stop water of earth retaining and shield machine when the shield machine arrives a shaft scheduled land previously and then a shaft is excavated. SOLUTION: In this shaft construction method of a shield preceding arrival shaft in which a shield machine 4 arrives a scheduled land for a shaft 2a prior to the construction of the shaft 2a, segments 7, 7 having a predetermined height are assembled along an outside diameter for digging of the shaft 2a when excavating the shaft 2a reaches the vicinity of an upper part of the shield machine 4, an opening segment 12 in which axial direction of the shaft 2a has an inside diameter along an outside diameter of the shield machine 4 and which has a predetermined height by matching with an outside diameter of the shaft 2a is arranged in an opening part H of the shaft 2a in which the outside diameter of the shield machine 4 crosses the outside diameter of the shaft 2a with respect to a plane, and the opening segment 12 and outer periphery of the shield machine 4 are fixed firmly. Furthermore, a lower part of the shaft 2a is digged by matching it with a predetermined height of next opening segments 11, 13, the opening segments 11, 13 are arranged and are firmly fixed with outer periphery of the shield machine 4, and this process is repeated to construct the opening part H of the shaft 2a.

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