CRD construction method tunnel waterproof construction method

A construction method and tunnel technology, which is applied in tunnels, tunnel linings, earthwork drilling, etc., can solve the problems of large support settlement deformation, large investment, and long period of removing temporary supports, so as to reduce construction costs and shorten construction periods Effect

Inactive Publication Date: 2014-03-19
CHINA RAILWAY CONSTR BRIDGE ENG BUREAU GRP
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Problems solved by technology

It takes a long period to remove the temporary support, and the investment is large, and the settlement deformation of the initial support is relatively large during the lining construction process

Method used

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  • CRD construction method tunnel waterproof construction method
  • CRD construction method tunnel waterproof construction method
  • CRD construction method tunnel waterproof construction method

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Embodiment Construction

[0021] Such as figure 1 , 3 , Shown in 5: a kind of CRD construction method tunnel waterproof construction method, comprises the following steps:

[0022] ① After the initial support system is stabilized, deformation monitoring points shall be arranged on the vault and side walls to monitor the settlement deformation during construction;

[0023] ② After the concrete of the middle partition within the scope of the lining floor is broken, the I-beam 1 of the middle partition is removed by removing one by one;

[0024] ③Grind the remaining I-beams that have not been removed, and smooth and harden them with cement mortar within 500mm around the I-beams to form a hardened base surface 18, ensuring that the I-beams and hardened base surfaces are smooth and free of residue, dry and water-free;

[0025] ④Apply rubberized asphalt 15 on the unremoved I-beam 10 and the hardened base surface, lay waterproof board 17 on the asphalt and paste it tightly with rubberized asphalt, and weld...

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Abstract

A CRD construction method tunnel waterproof construction method includes the following steps that after a primary support system is stabilized, deformation monitoring points are arranged on an arch crown and side walls; CRD I-steel is demounted every other within the range of a lining bottom plate and a lining top plate; the residual non-demounted I-steel is ground, and the periphery of the I-steel is floated with cement mortar and hardened; the non-demounted I-steel and the hardened base surface are coated with rubber bitumen and paved with waterproof plates, the surfaces of the waterproof plates on the periphery of the I-steel are coated with a layer of rubber bitumen, and eventually a water stop flange is welded to each I-steel, and grouting systems are arranged on the two sides of the I-steel; bottom plate lining construction and top plate lining construction are conducted, after the top plate lining construction is conducted, all residual temporary supports are demounted; temporary inverted arch concrete and the I-steel within the range of the bottom plate side walls are broken and demounted; bottom plate side wall ECB waterproof plate pavement and lining construction are conducted. The phenomenon of settlement deformation of primary supports in the lining process can be effectively controlled, the construction period is shortened, and construction investment is reduced.

Description

Technical field: [0001] The invention belongs to a building construction method, in particular to a CRD construction method tunnel waterproof construction method. Background technique: [0002] At present, the CRD construction method is often used in the construction of large-section, weak surrounding rock and shallow-buried tunnels at home and abroad. During the tunnel lining construction process of the CRD construction method, the removal of all temporary supports has a high risk, complicated procedures, and slow construction speed. The existing construction method is to remove all temporary supports 11 after the initial support is closed into a ring, and then carry out waterproofing construction 12 and lining construction 13 (such as figure 2 ). It takes a long period to remove the temporary support, and the investment is large, and the settlement deformation of the initial support is relatively large during the lining construction process. Invention content: [0003...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D11/38E21D11/10
Inventor 曲建生申晓明宋战平
Owner CHINA RAILWAY CONSTR BRIDGE ENG BUREAU GRP
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