Construction method of tunnel drainage system with steel-FRP composite corrugated pipe

A technology for tunnel drainage and construction methods, which is applied in the directions of drainage, pipes, and pipe components, and can solve problems such as low strength and brittle failure.

Active Publication Date: 2018-01-05
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But its own strength is not high, and it shows brittle failure, so it should not be used alone as a bearing material

Method used

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  • Construction method of tunnel drainage system with steel-FRP composite corrugated pipe
  • Construction method of tunnel drainage system with steel-FRP composite corrugated pipe
  • Construction method of tunnel drainage system with steel-FRP composite corrugated pipe

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Embodiment Construction

[0020] The invention will be described below in conjunction with examples.

[0021] Such as figure 1 As shown, the tunnel support is spliced ​​by four composite FRP corrugated plates 1 embedded with steel, and the corrugated plates are connected by high-strength bolts 4 . A blind pipe 3 is arranged at the trough of the corrugated pipe, and a waterproof filter plate 5 is fixed, the drain pipe 3 is collected in the central drain pipe 6, and concrete 2 is poured between the corrugated pipe and the surrounding rock.

[0022] Such as figure 2 As shown, the drain pipe 3 is built into the cavity of the corrugated pipe trough and the waterproof filter plate, and the number of the drain pipe 3 can be appropriately increased or decreased according to the hydrological conditions, and the waterproof filter plate 5 is only fixed on the part with the drain pipe.

[0023] Such as image 3 As shown, the composite FRP corrugated plate 1 embedded with steel is formed by pultruding and therm...

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Abstract

The invention discloses a construction method of a tunnel drainage system with a steel-FRP composite corrugated pipe. The drainage system uses part of wave troughs to collect water and drains water toa center drainage pipe by means of drainage pipelines, and the drainage mode improves the water collection capacity and the drainage efficiency. Specifically, the steel-FRP composite corrugated pipeis prefabricated in the backfield, a rigid filter screen is fixed to part of a corrugated pipe sheet, and blind pipes are embedded in the corrugated pipe sheet so as to achieve longitudinal drainage.The steel-FRP composite corrugated pipe is installed in site as a whole to serve as a tunnel primary lining, and a three-way pipe connector is used at the joint of corrugated pipes to achieve annulardrainage. The wave troughs of the composite FRP corrugated pipe with built-in steel are used and matched with waterproof filter plates to form a cavity for collecting underground water; water is discharged to the center drainage pipe through the drainage pipelines, arrangement is flexible, the number of the drainage pipelines can be increased according to specific hydrogeological conditions, watercollection is facilitated, and the material is good in corrosion resistance, can be used in underground structures with poor hydrogeological conditions and is convenient and fast to construct.

Description

technical field [0001] The invention relates to a construction method for tunnel drainage using a steel-FRP composite corrugated pipe. Specifically, the steel-FRP composite corrugated pipe is used as the initial support of the tunnel, and the corrugated pipe itself is used to collect water in the trough, and the structural form of the drainage pipe is used to drain outwards, and the construction method of this structural form is involved. Background technique [0002] During the tunnel construction process, the drainage system and the support structure do not affect each other. In the construction process of mining method, steel grid and shotcrete are often used for primary support of the surrounding rock, the drainage system is constructed independently of the primary support structure, and the waterproof layer is set between the primary lining and the secondary lining , which means that groundwater may infiltrate into the primary lining, which will cause steel corrosion a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21F16/02F16L9/14F16L55/07
Inventor 李鹏飞马国伟王德华李之建杨云轩
Owner BEIJING UNIV OF TECH
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