CN221074290U - Die for reverse filtering layer of drainage blind pipe of tunnel - Google Patents

Abstract

The utility model relates to the technical field of tunnel construction, in particular to a die for a reverse filtering layer of a drainage blind pipe of a tunnel, which comprises an initial support and a waterproof board, wherein a drainage blind pipe which is longitudinally arranged and used for drainage is arranged at the bottom between the initial support and the waterproof board, a limit reinforcing steel bar is fixedly connected to a bottom support part of the drainage blind pipe, and one side of the limit reinforcing steel bar is fixedly connected with the initial support; a plurality of precast slabs which are longitudinally arranged are arranged above the drainage blind pipe, the bottoms of the precast slabs are arranged in an arc surface, and the bottoms of the precast slabs are arranged in close contact with the upper surface of the drainage blind pipe; when the water-draining blind pipe is used for tunnel construction, the longitudinally arranged precast plates which are uniformly distributed are arranged above the water-draining blind pipe, and the precast plates are connected in series through the connecting iron wires so as to be in close contact, and the precast plates are not easy to deform in the long-time use process, so that the phenomena of void and cavity are not easy to exist above the triangular area, and the precast plates are in close contact with the waterproof plates to achieve a certain supporting purpose.

Description

Die for reverse filtering layer of drainage blind pipe of tunnel

Technical Field

The utility model relates to the technical field of tunnel construction, in particular to a die for a reverse filtering layer of a drainage blind pipe of a tunnel.

Background

In tunnel construction, it is generally required to install drainage blind pipes on both sides for smoothly draining water on both sides, and in tunnel construction, blind pipes are buried in the upper geotechnical cloth and the area below the triangular area of the primary support surface, and particles of sand-free concrete are buried in the triangular area above the drainage blind pipes for filling work, but when used for a long time, the particles of sand-free concrete are gradually compacted, and at this time, void and cavity phenomena are easily formed behind the waterproof board above the triangular area, and the construction method has construction difficulty and construction complexity, so a mold for a reverse filtering layer of the tunnel drainage blind pipes is proposed for the above problems.

Disclosure of utility model

The utility model aims to provide a die for a tunnel drainage blind pipe inverted filter layer, so as to solve the problems in the prior art.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

As an alternative to the mold for a tunnel drain blind pipe inverted filter according to the present utility model, wherein: a mould for a reverse filtering layer of a drainage blind pipe of a tunnel comprises an initial support and a waterproof plate,

A drainage blind pipe which is longitudinally arranged and used for drainage is arranged at the bottom between the primary support and the waterproof board, a limit reinforcing steel bar is fixedly connected to the bottom support part of the drainage blind pipe, and one side of the limit reinforcing steel bar is fixedly connected with the primary support;

The top of drainage blind pipe is installed a plurality of and is constituteed the vertical prefabricated plate that sets up to the prefabricated plate bottom is the cambered surface setting, the bottom of prefabricated plate is the close contact setting with drainage blind pipe upper surface.

As an alternative to the mold for a tunnel drain blind pipe inverted filter according to the present utility model, wherein: one end of the bottom of the waterproof board is installed with the primary support surface by adopting rivet pressing strips.

In tunnel construction, it is generally required to install drainage blind pipes on two sides, which are used for smoothly draining water on two sides, and when in tunnel construction, blind pipes are buried in the area below a triangular area formed by geotextile above and an initial support surface, and particles of sand-free concrete are buried in the triangular area above the drainage blind pipes for filling work, but when in long-term use, the particles of sand-free concrete are gradually compacted, at the moment, void and cavity phenomena are easily formed behind a waterproof board above the triangular area, and the construction mode has construction difficulty and construction complexity, while when in use, the device adopts a limit reinforcing steel bar for fixing a bottom support part of a longitudinal blind pipe, the original design of cast-in-place sand-free concrete seepage drainage body on the top of the longitudinal blind pipe is changed into a triangular precast board, the limit reinforcing steel bar is arranged on the arch wall part of a tunnel according to a discharge height hanging line before the installation of the longitudinal blind pipe, the longitudinal blind pipe is combined with the precast board in advance, after the installation of the longitudinal blind pipe combination, the installation of the longitudinal blind pipe combination body is carried out with the limit reinforcing steel bar, and the waterproof board is covered by the initial cloth, and the waterproof board is reversely covered by the waterproof board, and the rivet is not required to be installed, and the construction time is shortened.

As an alternative to the mold for a tunnel drain blind pipe inverted filter according to the present utility model, wherein: the connecting holes are formed in the upper portions of the prefabricated plates, and connecting iron wires used for connecting the prefabricated plates in series are arranged in the connecting holes.

When the prefabricated plate is installed, the prefabricated plates are connected in series through connecting iron wires, and the prefabricated plates are tightly connected, so that stable installation is ensured.

Compared with the prior art, the utility model has the beneficial effects that:

when the tunnel is constructed, the prefabricated plates which are longitudinally arranged and uniformly distributed are arranged above the drainage blind pipe, and the prefabricated plates are connected in series through the connecting iron wires so as to be in close contact, and at the moment, the prefabricated plates are not easy to deform in the long-time use process, so that the phenomena of void and cavity are not easy to exist above a triangular area, and the prefabricated plates and the waterproof plates are in close contact to achieve a certain supporting purpose;

And when constructing, through prefabricated plate in advance, can ensure engineering efficiency of construction this moment to this kind of construction method is very simple, and the drainage blind pipe is installed in advance with the tunnel arch wall department behind the prefabricated plate combination can.

Drawings

Fig. 1 is a schematic diagram of the overall structure of the present utility model.

In the figure: 1. primary support; 2. a waterproof board; 3. a drainage blind pipe; 4. a prefabricated plate; 5. connecting iron wires; 6. and (5) limiting the steel bars.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Example 1

Referring to fig. 1, the present utility model provides a technical solution:

A mould for a reverse filtering layer of a drainage blind pipe of a tunnel comprises an initial support 1 and a waterproof plate 2,

A drainage blind pipe 3 which is longitudinally arranged and used for drainage is arranged at the bottom between the primary support 1 and the waterproof board 2, a limit steel bar 6 is fixedly connected to the bottom support part of the drainage blind pipe 3, and one side of the limit steel bar 6 is fixedly connected with the primary support 1;

A plurality of prefabricated plates 4 which are longitudinally arranged are arranged above the drainage blind pipe 3, the bottoms of the prefabricated plates 4 are arranged in an arc surface mode, and the bottoms of the prefabricated plates 4 are arranged in close contact with the upper surface of the drainage blind pipe 3.

One end of the bottom of the waterproof board 2 is installed on the surface of the primary support 1 by rivet pressing strips.

In tunnel engineering construction, it is generally required to install drainage blind pipes on two sides, it is used for needing to discharge water on two sides smoothly, and in tunnel construction, the blind pipes are buried in the triangle area below the triangle area formed by the geotextile above and the primary support surface, and the particles of sand-free concrete are buried in the triangle area above the drainage blind pipes for filling work, but in long-term use, the particles of sand-free concrete are compacted gradually, at this moment, the triangle area above easily forms void and cavity phenomenon behind the waterproof board, and this construction mode has construction difficulty, construction complexity problem, and the device is in use, the bottom support position of the longitudinal blind pipes 3 adopts spacing reinforcing steel 6 to fix, the original design cast-in-place sand-free concrete seepage drainage body of the top of the longitudinal blind pipes 3 changes to triangular precast boards 4, the spacing reinforcing steel 6 are set up according to the lofting height hanging lines in the tunnel arch wall position before the installation of the longitudinal blind pipes 3, then the combined installation of the longitudinal blind pipes 3 and precast boards 4 is carried out, after the longitudinal blind pipe 3 combined body is installed, and the waterproof board is covered by the geotextile and the waterproof board is covered, but the construction period is not shortened, but the construction period is shortened.

Example 2

In this embodiment, as shown in fig. 1, the prefabricated panels 4 are provided with connecting holes above, and connecting wires 5 for connecting the prefabricated panels 4 in series are provided inside the connecting holes.

When the prefabricated plate 4 is installed, the prefabricated plates are connected in series through the connecting iron wires 5, and the prefabricated plates 4 are tightly connected, so that stable installation is ensured.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (3)

1. A mould for tunnel drainage blind pipe reverse filter layer, its characterized in that:

Comprises an initial support (1) and a waterproof board (2),

A drainage blind pipe (3) which is longitudinally arranged and used for drainage is arranged at the bottom between the primary support (1) and the waterproof board (2), a limit reinforcing steel bar (6) is fixedly connected to the bottom support part of the drainage blind pipe (3), and one side of the limit reinforcing steel bar (6) is fixedly connected with the primary support (1);

The top of drainage blind pipe (3) is installed a plurality of prefabricated plates (4) of constituteing vertical setting to prefabricated plate (4) bottom is the cambered surface setting, the bottom of prefabricated plate (4) is the close contact setting with drainage blind pipe (3) upper surface.

2. A mold for a tunnel drain blind pipe inverted filter according to claim 1, wherein: one end of the bottom of the waterproof board (2) and the surface of the primary support (1) are installed by rivet pressing strips.

3. A mold for a tunnel drain blind pipe inverted filter according to claim 1, wherein: the connecting holes are formed in the upper portions of the prefabricated plates (4), and connecting iron wires (5) used for connecting the prefabricated plates (4) in series are arranged in the connecting holes.