Large-section rectangular pipe jacking tunnel portal sealing device and installation method thereof
A technology of rectangular pipe jacking and sealing device, applied in sealing device, mining device, earthwork drilling and other directions, can solve problems such as poor sealing effect, and achieve the effect of good sealing effect, simple structure and convenient handling
Pending Publication Date: 2018-12-18
CHINA RAILWAY TUNNEL GROUP CO LTD
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Problems solved by technology
[0005] The purpose of the present invention is to provide a large-section rectangular pipe-jacking tunnel door sealing device and its installation method to solve the problem of using conventional shield tunnels and large-section rectangular pipe-jacking tunnel doors in water-rich strata. The technical problem of the poor sealing effect of the sealing method of the tunnel door of pipe jacking
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Embodiment
[0032] Embodiment: A sealing device for the portal of a large-section rectangular pipe-jacking tunnel, see Figure 1 to Figure 6 ,in, Figure 5 The double-dotted line in the figure represents the schematic diagram of the state when the present invention is pushed into the pipe joint, including the main structure, the steel ring of the door embedded in the main structure, and the outer layer waterproof parts and the inner layer waterproof parts are sequentially arranged along the door from outside to inside. The door steel ring includes a circumferential steel ring 8 and an outer sealing steel ring 9 and an inner sealing steel ring 7 arranged at intervals along the circumferential steel ring 8. The outer waterproof part includes a curtain rubber plate 2 and a rubber curtain for fixing the curtain. The plate 2 and the pressure plate 1 whose radial position can be adjusted along the door, and the curtain rubber plate 2 are correspondingly arranged on the outer sealing steel ring ...
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The invention discloses a large-section rectangular pipe jacking tunnel portal sealing device and am installation method thereof, and aims to solve the technical problem that when a large-section rectangular pipe jacking tunnel portal adopts sealing ways of a conventional shield tunnel and a pipe jacking tunnel portal, the sealing effect is poor. The sealing device comprises a main body structureand portal steel rings which are embedded into the main body structure, and an outer water-proof piece and an inner water-proof piece are arranged along a portal from outside to inside in sequence; the portal steel rings comprises the circumferential steel rings, the outer sealing steel rings and the inner sealing steel rings, and the outer sealing steel rings and the inner sealing steel rings arearranged along the circumferential steel rings at intervals in sequence; the outer water-proof piece comprises curtain rubber plates and press plates, the press plates are used for fixing the curtainrubber plates, the positions, in the radial direction of the portal, of the press plates can be adjusted, and the curtain rubber plates are correspondingly arranged on the outer sealing steel rings.The sealing form that the press plates and the curtain rubber plates are used by the outer water-proof piece is high in reliability, the positions of the press plates can be adjusted, and processing is easy; an air bag can provide support, the problems that because a folding press plate on the bottom cannot rebound, the portal is sealed and grout is leaked are prevented.
Description
technical field [0001] The invention relates to the technical field of shield tunneling engineering, in particular to a large-section rectangular pipe-jacking tunnel door sealing device and an installation method thereof. Background technique [0002] With the rapid development of social economy, the ground space is becoming increasingly tight, and the development and application of underground space is becoming more and more popular. At present, more and more pedestrian passages at subway entrances and underground pedestrian passages are constructed using shield pipe jacking machines. [0003] The construction of large-section rectangular shield pipe-jacking tunnels in water-rich strata has extremely high requirements on the waterproofing of the portal, especially the sealing of the portal at the originating end, which is completely different from the principle of ordinary shield tunnels (due to the shield tunnel and pipe-jacking The construction principle of the tunnel is ...
Claims
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Login to View More IPC IPC(8): E21F17/12E06B7/16
CPCE21F17/12E06B7/16
Inventor 李向南王俊澎杨红军杜闯东周仲贺王坤张朋晖王义杰
Owner CHINA RAILWAY TUNNEL GROUP CO LTD