Construction method for improving grouting effect of tunnel vault with mold
A grouting effect and molded technology, which is applied in tunnels, tunnel linings, shaft linings, etc., can solve problems that affect the operation and driving safety, grouting pipes and flanges are prone to overflow, and lining vaults are difficult to pour and compact.
Active Publication Date: 2021-07-16
ROAD & BRIDGE INT +1
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Problems solved by technology
[0004]
The main purpose of this application is to provide a construction method for improving the effect of molded grouting on the tunnel vault, so as to solve the problem that the grouting liquid is poured from bottom to top between the trolley and the waterproof board in the related art. A certain pressure makes it difficult to pour and compact the upper part of the lining vault, which affects the safety of operation and driving, and the problem of grout overflow between the grouting pipe and the flange is easy to occur
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[0039] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiment of the application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the application. Obviously, the described embodiment is only It is an embodiment of a part of the application, but not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.
[0040] It should be noted that the terms "first" and "second" in the description and claims of the present application and the above drawings are used to distinguish similar objects, but not necessarily used to describe a specific sequence or sequence. It should be understood that the data so used may be interchanged under appropriate circumstances for...
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The invention discloses a construction method for improving the grouting effect of a tunnel vault with a mold. The construction method comprises the steps that holes are formed in the arch part of a lining trolley; a grouting flange plate is installed at the hole of the lining trolley; a grout overflow opening is cut in the first end of the grouting pipe, and a waterproof adhesive tape is wound at the second end; a grouting pipe penetrates through the middle of the grouting flange plate, the first end of the grouting pipe abuts against a waterproof plate, and the second end of the grouting pipe is flush with the lower end face of an opening of the grouting flange plate and tightly attached to the opening of the grouting flange plate; an opening of the grouting flange plate is in threaded connection with a variable-section nut, and the grouting pipe and the waterproof plate are tightly jacked through the variable-section nut; a quick connector is connected to the variable-section nut; the quick connector and a grouting device are used for quickly connecting with the mold for grouting; and after the grouting with the mold is completed, the lining back void is scanned. The problems that in the prior art, the upper part of the lining vault is difficult to pour compactly, operation and driving safety is affected, and grout is prone to overflowing between the grouting pipe and the flange plate are solved.
Description
technical field [0001] The application relates to the technical field of tunnel grouting construction, in particular, to a construction method for improving the effect of tunnel vault grouting with mold. Background technique [0002] With the rapid development of my country's railways, the running speed of railways has steadily increased. During the tunnel lining construction process, whether the lining vault is grouted densely or not, and whether there is water in the void will seriously affect the service life of the vault lining during tunnel operation. Conventional lining injection The grouting process is: trolley in place, pre-embedded grouting pipe, lining pouring, grouting pipe installation and grouting, grouting operation, form removal and quality inspection, grouting pipe aligned with grouting hole in conventional construction method The outlet of the grouting liquid is located at the lower part of the lining vault, and the grouting liquid is poured from bottom to top...
Claims
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Patent Timeline
Login to View More IPC IPC(8): E21D11/10E21D11/38
CPCE21D11/10E21D11/105E21D11/38Y02E10/20
Inventor 薛明英薛海璞张瑞平邱伟超王海翔王玮沈文祝向西
Owner ROAD & BRIDGE INT