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TBM gripper shoe concrete precast block device and gripper shoe tight-holding method

A technology of concrete and prefabricated blocks, which is applied in earthwork drilling, shaft equipment, shaft lining, etc. It can solve the problems that the full-section tunnel boring machine support shoes cannot be tightened, and achieve the effect of stable recovery of excavation construction

Active Publication Date: 2016-12-14
辽宁北铁建工有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the problem that the full-section tunnel boring machine shoe cannot be tightened in the prior art, the present invention provides a concrete prefabricated block device for the TBM shoe, which is characterized in that it is made of steel bars and concrete, and the concrete is made of The raw materials are high-quality Portland cement with a strength grade of 52.5, quartz sand, fly ash, polycarboxylate superplasticizer, steel fiber, and water. The mass ratio is: 1:1:0.5:0.09:0.18: 0.18; The raw material used for the steel bar is the finished rolled threaded steel bar for prestressed concrete, of which: the carbon content is 0.15%-0.3%, the silicon content is 1.7%-1.9%, the manganese content is 1.0%-1.2%, the phosphorus content is less than 0.014%, and the sulfur content is less than 0.014%. The content is less than 0.02%; the shape of the TBM brace shoe concrete prefabricated block device matches the shape of the brace shoe, and it also includes a fixed steel bar. When the rock is unstable or collapses, the TBM stretcher concrete prefabricated block device is fixed to the stretcher by fixing the other end of the steel bar, and the stretcher cylinder fixes the stretcher on the tunnel wall through the TBM stretcher concrete prefabricated block device

Method used

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  • TBM gripper shoe concrete precast block device and gripper shoe tight-holding method

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Embodiment Construction

[0020] In the following, the technical solutions of the present invention will be further described in detail through embodiments and in conjunction with the drawings.

[0021] As shown in the figure, the present invention provides a TBM support shoe concrete precast block device, which is characterized in that it is made of steel and concrete, and the raw material used in the concrete is high-quality silicate with a strength grade of 52.5. The mass ratio of cement, quartz sand, fly ash, polycarboxylic acid water reducer, steel fiber, and water is: 1:1:0.5:0.09:0.18:0.18; the raw material used for the steel bar is the prestressed concrete screw thread Steel bars, of which: carbon content is 0.15%-0.3%, silicon content is 1.7%-1.9%, manganese content is 1.0%-1.2%, phosphorus content is less than 0.014%, sulfur content is less than 0.02%; the shape of TBM shoe concrete precast block 1 Matching with the shape of the support shoe 3, it also includes a fixed reinforcement member 2. On...

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Abstract

The invention relates to a TBM gripper shoe concrete precast block device and a gripper shoe tight-holding method using the device. A precast block is formed by rebar and concrete, the shape of the precast block is matched with the shape of a gripper shoe, the precast block further comprises a fixing rebar part, one end of the fixing rebar part is embedded into the TBM gripper shoe concrete precast block device, when a TBM comes across the conditions that the rock is instable or collapse occurs in excavation construction, the other end of the TBM gripper shoe concrete precast block device is fixed on the gripper shoe by the aid of the fixing rebar part, a gripper cylinder can fix the gripper shoe on the tunnel wall by the TBM gripper shoe concrete precast block device, the excavation construction can be recovered rapidly, efficiently, safely and stably, the construction production efficiency of a construction enterprise is improved, and the construction cost is saved.

Description

Technical field [0001] The invention relates to the field of underground and tunnel construction equipment, in particular to a TBM shoe-supporting concrete prefabricated block device of a full-section tunnel boring machine and a method for holding up the shoe. Background technique [0002] At present, the way to deal with the rock collapse of the cave wall where the support shoe is tightly supported during the TBM construction is to use wooden blocks and sandbags at the cave-in. During the tunneling construction, the rock at the support shoe support is unstable and the support shoe cannot be tightly supported when it collapses locally. This causes the equipment to slide backwards during tunneling, which affects the construction effect and construction schedule. [0003] In order to improve the above shortcomings, the present invention provides a new type of shoe-supporting concrete prefabricated block device, which solves the problem of rock instability at the shoe-supporting locat...

Claims

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Application Information

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IPC IPC(8): C04B28/04E21D11/08C22C38/02C22C38/04
CPCC04B28/04C04B2111/00724C22C38/02C22C38/04E21D11/08C04B14/06C04B18/08C04B14/48C04B2103/302
Inventor 刘双仲赵小庆罗中勇王飞
Owner 辽宁北铁建工有限责任公司
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