Portal door sealing device and sealing method used for shield tunneling
A technology for sealing devices and portals, which is applied in the direction of earth drilling, mining equipment, tunnels, etc., to achieve good effects and good sealing effects
Active Publication Date: 2022-02-08
CHINA RAILWAY 11TH BUREAU GRP +1
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Problems solved by technology
[0006] Aiming at the problems existing in the prior art, the present invention provides a portal sealing device and sealing method for shield tunneling in the starting section of the water-rich complex stratum. The sealing device adopts a magnetic steel plate and an improved hinge plate, The combination of curtains and flexible and rigid sealing components are used to seal multiple times to ensure the sealing effect, which can solve the problem of shield tunnel sealing under complex geological conditions with too much water and sand gushing, and improve the safety of shield tunneling
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[0051] The present invention will be further described below in conjunction with drawings and embodiments. attached Figure 1 to Figure 15 The drawings for the embodiments are drawn in a simplified manner and are only used for the purpose of clearly and concisely illustrating the embodiments of the present invention. The following technical solutions shown in the drawings are specific solutions of the embodiments of the present invention, and are not intended to limit the scope of the claimed invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0052] In the description of the present invention, it should be understood that the orientations or positional relationships indicated by the terms "upper", "lower", "inner", "outer", "left", "right" etc. are based on those shown in the accompanying drawings. Orientation...
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The invention provides a portal sealing device and method for shield tunneling. The hole door sealing device includes a pre-embedded hole door ring, an annular rubber cord sealing member and a magnetic sealing member; each hinge plate of the annular rubber cord sealing member includes a circumferential fixing plate, a folding plate and a counter pressure plate, and the magnetic The sealing component includes two ring-shaped elastic telescopic sealing steel plates, a tightening device and a magnetic steel sheet arranged on the inner ring of each elastic telescopic sealing steel plate. During the assembly process of the shield segment, two annular elastic telescopic sealing plates are adsorbed to the shell of the shield machine to form a rigid sealing structure. After the shell of the shield machine is completed, the sealing steel plate and the starting segment are adsorbed to form a permanent sealing structure. The invention has good sealing effect, and solves the problem of water gushing and sand gushing in the process of shield tunneling in complex water-rich strata.
Description
technical field [0001] The invention belongs to the field of shield tunneling, and mainly relates to a portal sealing device and a sealing method for shield tunneling, which are designed for the tunneling section of the shield tunneling machine in the water-rich complex stratum. Background technique [0002] With the rapid development of modern urban construction, it will be an inevitable trend to exploit large areas of underground space to relieve urban volume and traffic pressure. The shield tunneling method has the advantages of fast construction and little impact on the ground, and is evaluated by the industry as the most The best underground space construction method. In the shield tunneling method subway construction, since the tunneling of the cutter head of the shield tunneling machine is involved in the shield tunneling, it is one of the more accident-prone procedures, and most of the accidents during the shield tunneling construction process are caused by the soil ...
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IPC IPC(8): E21D9/06
CPCE21D9/0635
Inventor 龙华东张昆峰杜殿逵杨玉刘振东陈焕志练才园
Owner CHINA RAILWAY 11TH BUREAU GRP