Tunnel side wall drainage blind pipe positioning device

Abstract

The utility model relates to a positioning device for a drainage blind pipe of a tunnel side wall. An existing side wall drainage blind pipe construction method has the problem that the installation quality is difficult to guarantee. The device comprises a blind pipe positioning clamp and an orifice sealing pipe, the blind pipe positioning clamp is of a tubular structure and located at the preset position of the side wall drainage blind pipe within the side wall lining pouring range, and the side wall drainage blind pipe is inserted into the blind pipe positioning clamp and extends into the outer side of the side wall lining pouring range. And the orifice sealing pipe is inserted into the side wall drainage blind pipe from the inner end of the blind pipe positioning clamp. The blind pipe positioning clamp is used for positioning the side wall drainage blind pipe, a traditional simple positioning mode is replaced, so that the installation quality such as slope and orifice elevation control of the side wall drainage blind pipe is guaranteed, welding operation of site positioning steel bars and damage to a side wall arc-shaped formwork are reduced, electric welding sparks are reduced in gas tunnel construction, and the construction efficiency is improved. The safety risk is reduced, meanwhile, the time of the blind pipe positioning procedure is shortened, and the operation cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel side wall drainage blind pipe construction, in particular to a tunnel side wall drainage blind pipe positioning device. Background Art

[0002] Tunnel drainage construction is an important part of tunnel construction, including tunnel longitudinal drainage blind pipes, tunnel side wall drainage blind pipes, etc., which are extremely important in drainage measures. Among them, tunnel side wall drainage blind pipes are generally located on the tunnel side walls. They are concealed engineering drainage measures and irreversible construction structures. Once deviation occurs, it will be extremely difficult to deal with them later. If the side wall drainage blind pipes are not accurately positioned at the beginning of construction, the angle deviation of the water outlet is large, which will not only affect the drainage effect, but also cause more water accumulation behind the secondary lining, and even damage the tunnel lining. Therefore, the project needs to ensure that the side wall drainage blind pipes are not offset during the installation and fixing stage.

[0003] In order to accurately locate and install the tunnel side wall drainage blind pipe, the current operation method is to use positioning steel bars or drill holes in the arc template to fix the drainage blind pipe. The installation is rather random, the installation quality is difficult to guarantee, and it is labor-intensive and time-consuming.

[0004] Therefore, it is necessary to propose new measures to overcome the above-mentioned defects. Summary of the invention

[0005] The utility model aims to provide a tunnel side wall drainage blind pipe positioning device to solve the problem that the installation quality is difficult to ensure in the existing operation method.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A tunnel side wall drainage blind pipe positioning device, the device comprising a blind pipe positioning fixture and an orifice sealing pipe;

[0008] The blind pipe positioning fixture is a tubular structure, located at a preset position of the side wall drainage blind pipe within the side wall lining casting range, and the side wall drainage blind pipe is inserted into the blind pipe positioning fixture and penetrates into the outside of the side wall lining casting range;

[0009] The orifice closing pipe is inserted into the side wall drainage blind pipe from the inner end of the blind pipe positioning fixture.

[0010] Furthermore, the blind pipe positioning fixture includes guide ribs and a plurality of drainage pipe limiting rings;

[0011] A plurality of the drainage pipe limiting rings are arranged in parallel and fixed on the guide ribs in sequence to form the tubular structure. The guide ribs are located on the side of the tubular structure.

[0012] Furthermore, the orifice sealing tube includes an oblique tube and a cover plate, and the cover plate is fixed to one end of the oblique tube.

[0013] Furthermore, the cover plate is provided with a central hole for taking out the orifice closing pipe from the side wall drainage blind pipe.

[0014] Furthermore, the inner end of the side wall drainage blind pipe is located at the inner wall of the side wall lining.

[0015] Furthermore, the cover plate is flush with the inner wall of the side wall lining.

[0016] Furthermore, the area of ​​the cover plate is larger than the area of ​​the inner end opening of the oblique tube.

[0017] Furthermore, the device also includes a longitudinal supporting steel bar, and the guide rib is fixed to the top of the longitudinal supporting steel bar.

[0018] Furthermore, the longitudinal supporting steel bars are structural steel bars in the side wall lining.

[0019] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0020] The utility model provides a blind pipe positioning device for drainage on the side wall of a tunnel. The blind pipe positioning fixture is used to position the blind pipe of drainage on the side wall, replacing the traditional simple positioning method, so that the installation quality of the blind pipe of drainage on the side wall, such as the slope and the elevation control of the orifice, is guaranteed. In addition, the welding operation of the steel bars for positioning on site and the damage to the arc-shaped template of the side wall are reduced. In the construction of the gas tunnel, the electric welding sparks are reduced, the safety risks are reduced, and the blind pipe positioning process time is shortened, and the operation cost is reduced. The precise positioning of the blind pipe of drainage on the side wall not only ensures that the drainage pipe is not deformed, does not warp upside down, and the drainage is smooth, but also realizes the standardization of the construction of the low side wall of the tunnel invert. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, drawings of other embodiments can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is a structural diagram of a blind tube positioning fixture of the utility model.

[0023] Figure 2 It is a structural diagram of the orifice sealing tube of the utility model.

[0024] Figure 3 It is a structural diagram of a cover plate of the present utility model.

[0025] Figure 4 It is a structural diagram of the utility model.

[0026] The symbols in the figure are:

[0027] 1- blind pipe positioning fixture, 11- drainage pipe limiting ring, 12- guide rib;

[0028] 2-hole closing tube, 21-oblique tube, 22-cover plate, 23-center hole;

[0029] 3-Side wall drainage blind pipe;

[0030] 4-Side wall lining;

[0031] 5-Longitudinal support reinforcement. DETAILED DESCRIPTION

[0032] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively with reference to the relevant drawings. The drawings provide preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thoroughly and comprehensively understood.

[0033] In the description of the present invention, it should be understood that the terms "center", "top", "bottom", "inside", "outside", "longitudinal", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present invention.

[0034] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection", "setting" and the like should be understood in a broad sense, for example, they can be fixedly connected or set, or detachably connected or set, or integrally connected or set. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] It should also be noted that although the order of steps is mentioned in the method description, in some cases, they may be performed in an order different from that shown here, and this should not be construed as a limitation on the order of the steps.

[0036] In a specific implementation manner, the tunnel length direction is defined as the longitudinal direction, the direction perpendicular thereto is defined as the transverse direction, the direction close to the tunnel is defined as "inside", and the direction close to the surrounding rock is defined as "outside".

[0037] The utility model provides a tunnel side wall drainage blind pipe positioning device, which is pre-installed before the side wall lining 4 is poured, and can effectively avoid the defects of reverse slope, uneven hole elevation, and uneven hole blockage that are easy to occur in the construction of the side wall drainage blind pipe.

[0038] like Figure 1-4 The device mainly includes two structures, including a blind tube positioning fixture 1 and an orifice sealing tube 2, which are plugged into each other.

[0039] The blind pipe positioning fixture 1 is a tubular structure, which is located at a preset position of the side wall drainage blind pipe 3 within the casting range of the side wall lining 4. The side wall drainage blind pipe 3 is inserted into the blind pipe positioning fixture 1 and penetrates into the outside of the casting range of the side wall lining 4. The blind pipe positioning fixture 1 includes a guide rib 12 and a plurality of drainage pipe limiting rings 11, which are all steel structures. The plurality of drainage pipe limiting rings 11 are arranged in parallel and are welded and fixed on the guide rib 12 in sequence to form a tubular structure. The guide rib 12 is located on the side of the tubular structure.

[0040] The orifice closing tube 2 is inserted into the side wall drainage blind tube 3 from the inner end of the blind tube positioning fixture 1. The orifice closing tube 2 includes an inclined tube 21 and a cover plate 22, and the cover plate 22 is fixed to one end of the inclined tube 21. The cover plate 22 is provided with a center hole 23 for taking the orifice closing tube 2 out of the side wall drainage blind tube 3. The inner end of the side wall drainage blind tube 3 is located at the inner wall of the side wall lining 4. The cover plate 22 is flush with the inner wall of the side wall lining 4. The area of ​​the cover plate 22 is larger than the inner end pipe opening area of ​​the inclined tube 21. The inclined tube 21 and the cover plate 22 are both steel structures, which are welded to each other to form the orifice closing tube 2, and its structural shape matches the inner diameter of the side wall drainage blind tube 3. On the one hand, the cover plate 22 is in close contact with the lining formwork to prevent the poured concrete from entering the side wall drainage blind pipe 3 and causing blockage; on the other hand, the oblique pipe 21 penetrates into the side wall drainage blind pipe 3. The rigidity of the oblique pipe 21 can enhance the side wall drainage blind pipe 3 to resist the extrusion of concrete during the pouring process and prevent the side wall drainage blind pipe 3 from deforming. Of course, the orifice sealing pipe 2 can also be made of other supporting materials.

[0041] The device further comprises a longitudinal support steel bar 5, and a guide bar 12 is fixed to the top of the longitudinal support steel bar 5. The longitudinal support steel bar 5 is a structural steel bar in the side wall lining 4. The guide bar 12 and the structural steel bar in the side wall lining 4 are welded and connected to each other, so that the side wall drainage blind pipe 3 is limited to the designed position during the concrete pouring process, ensuring the straightness, orifice elevation and drainage slope of the side wall drainage blind pipe 3.

[0042] The factory prefabrication process of the utility model is:

[0043] S1: Prefabricate the blind pipe positioning fixture 1, weld the guide rib 12 (Ф12) and the drainage pipe limiting ring 11 (Ф6) in the steel structure factory, the guide rib 12 is 50 cm long, and is mass-produced.

[0044] S2: Prefabricate the hole-sealing pipe 2, select a 5mm steel plate, and shape it according to the curvature of the side wall and the diameter of the blind pipe. At the same time, select a 30cm long Ф60 steel pipe and weld it to the steel plate. Open a hole in the center of the steel plate with a diameter of 2mm.

[0045] The on-site construction process is:

[0046] S1: Measure and lay out, mark the elevation line of the longitudinal blind pipe and the horizontal lead-out position of the side wall drainage blind pipe 3;

[0047] S2: Install the blind pipe positioning fixture 1 according to the designed slope of the side wall drainage blind pipe 3;

[0048] S3: insert the side wall drainage blind pipe 3 into the blind pipe positioning fixture 1 and connect it to the longitudinal blind pipe;

[0049] S4: Insert the orifice closing pipe 2 into the side wall drainage blind pipe 3 to prevent the blind pipe from twisting and deforming when pouring concrete.

[0050] The cover plate 22 of the hole-closing pipe 2 is in close contact with the arc-shaped template of the side wall lining 4. After the short side wall is demoulded, the hole-closing pipe 2 is taken out through the central hole 23 reserved on the cover plate 22 for recycling.

[0051] The blind pipe positioning fixture 1 and the orifice closing tube 2 of the utility model can be processed in one step in the factory. Since the orifice closing tube 2 can be taken out from the overall structure, it can be recycled. The installation and operation are simple, which can improve the work efficiency, save labor and reduce costs. It eliminates the quality defects of the traditional side wall drainage hole construction, realizes the standardized construction of accurate positioning and installation of the side wall drainage hole, avoids the blind drainage pipe from warping and clogging, and ensures that the blind pipe diameter does not deform and the drainage is unobstructed. In the construction of the gas section of the tunnel, the welding of the blind pipe positioning steel bars is reduced, reducing the construction safety risk. In the implementation of the fine project, it can achieve the effect of process priority, solid inside and beautiful outside.

[0052] The above specific examples are used to illustrate the present invention, which are only used to help understand the present invention and are not intended to limit the present invention. For those skilled in the art of the present invention, some simple deductions, deformations or substitutions can be made based on the idea of ​​the present invention.

Claims

1. A tunnel side wall drainage blind pipe positioning device, characterized in that: The device comprises a blind pipe positioning fixture (1) and an orifice sealing tube (2); The blind pipe positioning fixture (1) is a tubular structure, and is located at a preset position of the side wall drainage blind pipe (3) within the casting range of the side wall lining (4). The side wall drainage blind pipe (3) is inserted into the blind pipe positioning fixture (1) and penetrates into the outside of the casting range of the side wall lining (4); The orifice sealing tube (2) is inserted into the side wall drainage blind tube (3) from the inner end of the blind tube positioning fixture (1).

2. A tunnel side wall drainage blind pipe positioning device according to claim 1, characterized in that: The blind pipe positioning fixture (1) comprises a guide rib (12) and a plurality of drainage pipe limiting rings (11); A plurality of the drainage pipe limiting rings (11) are arranged in parallel and fixed on the guide ribs (12) in sequence to form the tubular structure; the guide ribs (12) are located on the side of the tubular structure.

3. A tunnel side wall drainage blind pipe positioning device according to claim 2, characterized in that: The orifice-sealing tube (2) comprises an oblique tube (21) and a cover plate (22), wherein the cover plate (22) is fixed to one end of the oblique tube (21).

4. A tunnel side wall drainage blind pipe positioning device according to claim 3, characterized in that: The cover plate (22) is provided with a central hole (23) for removing the orifice sealing tube (2) from the side wall drainage blind tube (3).

5. A tunnel side wall drainage blind pipe positioning device according to claim 4, characterized in that: The inner end of the side wall drainage blind pipe (3) is located on the inner wall of the side wall lining (4).

6. A tunnel side wall drainage blind pipe positioning device according to claim 5, characterized in that: The cover plate (22) is flush with the inner wall of the side wall lining (4).

7. A tunnel side wall drainage blind pipe positioning device according to claim 6, characterized in that: The area of ​​the cover plate (22) is larger than the area of ​​the inner end of the oblique tube (21).

8. A tunnel side wall drainage blind pipe positioning device according to claim 7, characterized in that: The device also includes a longitudinal supporting steel bar (5), and the guide bar (12) is fixed to the top of the longitudinal supporting steel bar (5).

9. A tunnel side wall drainage blind pipe positioning device according to claim 8, characterized in that: The longitudinal supporting steel bars (5) are structural steel bars within the side wall lining (4).

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