Small-section double-track tunnel connection channel construction pouring system

Abstract

The utility model discloses a small-section double-track tunnel connection channel construction pouring system, which is vertically arranged between two tunnels, and comprises a concrete pump, a concrete chute, a pouring device and a pouring device, a through hole is formed in the ground downwards in a penetrating mode, and the bottom of the through hole penetrates through the contact channel vault formwork and communicates with the interior of the contact channel. The upper end of the linear pouring pipeline communicates with the concrete chute, and the lower end of the linear pouring pipeline penetrates through the through hole and extends into the connection channel. The arc-shaped pouring pipeline is in an arc shape and is located in the connecting channel, one end of the arc-shaped pouring pipeline is detachably connected to the lower end of the linear pouring pipeline, and the other end of the arc-shaped pouring pipeline extends into a connecting channel vault formwork, so that many defects caused by arrangement of a long-distance concrete conveying pipeline are overcome, and the connecting channel secondary lining concrete pouring effect is greatly improved; manpower and material resources are saved, the construction cost is reduced, and the concrete quality problems such as pipe blocking and segregation of concrete can be prevented.

Description

Technical Field

[0001] The utility model relates to the field of tunnel connection channel construction and pouring, and more specifically, to a small-section double-line tunnel connection channel construction and pouring system. Background Art

[0002] With the continuous improvement of the domestic economic level and the continuous acceleration of the urbanization process, the development of tunnel engineering has been extremely rapid in the past two decades, becoming the preferred target for traffic planning and construction in major cities. The connecting channel is set between the two single-track tunnels for up and down lines, and plays the role of connection, drainage, personnel evacuation and fire prevention. The two tunnels are interconnected, which can effectively reduce the occurrence of accidents. If there is a problem with one tunnel as a whole, pedestrians can transfer to another tunnel through the connecting channel, and the safety of pedestrians is also greatly guaranteed, so it is called an "escape channel". In addition, when a tunnel has a problem, rescuers can reach the connecting channel from another tunnel, and then enter the tunnel where the accident occurred through the connecting channel, so as to quickly rescue the trapped people.

[0003] The specification requires that when the tunnel length is greater than 600m, a communication channel must be set up, usually near the midpoint of the tunnel. In actual construction, the tunnel length is generally greater than 1000m, and the location of the communication channel is often greater than 500m from the tunnel entrance. The conventional pouring method is to place the concrete pouring pump above the tunnel entrance and lay the delivery pipeline along the tunnel to the communication channel. This method requires the layout of the pipeline to be too long, which is easy to cause concrete blockage. Each unblocking requires a lot of manpower, material resources and time. If it is not handled in time, the concrete will segregate or initially set, which will further affect the quality of the secondary lining concrete of the communication channel. Utility Model Content

[0004] In order to achieve these purposes and other advantages according to the utility model, a preferred embodiment of the utility model provides a small-section double-line tunnel communication channel construction casting system, wherein the communication channel is vertically arranged between two tunnels, and the two ends of the communication channel are respectively connected to the two tunnels, and the small-section double-line tunnel communication channel construction system comprises:

[0005] A concrete pump is located on the ground, and the outlet of the concrete pump is tilted downward to connect to the concrete chute; a through hole is opened downward from the ground, and the bottom of the through hole passes through the arch template of the communication channel to connect to the inside of the communication channel;

[0006] A linear pouring pipe, the upper end of which is connected to the concrete chute, and the lower end of which passes through the through hole and extends into the communication channel;

[0007] The arc-shaped casting pipe is in the shape of an arc and is located in the connecting channel. One end of the arc-shaped casting pipe is detachably connected to the lower end of the linear casting pipe, and the other end extends into the arch template of the connecting channel.

[0008] According to a preferred embodiment of the utility model, it also includes:

[0009] The concrete transport vehicle is located on the ground, and the concrete pump is installed on the concrete transport vehicle.

[0010] According to a preferred embodiment of the present invention, the arc-shaped casting pipe is semicircular.

[0011] According to a preferred embodiment of the present invention, the diameter of the through hole is controlled to be 25-35 cm.

[0012] According to a preferred embodiment of the present invention, the upper end of the linear casting pipe exceeds the ground by 30-50 cm.

[0013] According to a preferred embodiment of the utility model, the lower end of the linear casting pipe extends out of the connecting channel arch formwork by 5-10 cm.

[0014] According to a preferred embodiment of the utility model, the connection between the linear casting pipe and the connecting channel arch formwork is filled with expansion foam.

[0015] The utility model at least has the following beneficial effects:

[0016] 1. The tunnel connection channel construction pouring system of the utility model can reduce the hoisting of construction concrete pouring equipment and the transportation process in the tunnel, avoid the potential safety hazards of hoisting and ensure the life safety of operators;

[0017] 2. The tunnel connection channel construction pouring system of the utility model can improve the concrete pouring speed, solve the material feeding problem during the pouring process, and eliminate the quality problems brought about in the later stage from the source;

[0018] 3. The use of the tunnel communication channel construction pouring system of the utility model can greatly improve the construction efficiency of the second lining concrete of the communication channel, prevent the problems of concrete pipe blocking and segregation, and improve the quality of concrete.

[0019] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The utility model is a structural schematic diagram of a pouring system for construction of a connecting channel of a double-track tunnel with a small or medium section. DETAILED DESCRIPTION

[0021] The present invention will be further described in detail below in conjunction with the accompanying drawings so that those skilled in the art can implement the invention with reference to the description.

[0022] The following description is used to disclose the utility model so that those skilled in the art can implement the utility model. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations. The basic principles of the utility model defined in the following description can be applied to other embodiments, variations, improvements, equivalents, and other technical solutions that do not deviate from the spirit and scope of the utility model.

[0023] Those skilled in the art should understand that, in the disclosure of the present invention, the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, which 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, the above terms should not be understood as limiting the present invention.

[0024] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0025] like Figure 1 As shown, a preferred embodiment of the utility model provides a small-section double-line tunnel communication channel construction casting system, wherein the communication channel 2 is vertically arranged between two tunnels 1, and the two ends of the communication channel 2 are respectively connected to the two tunnels 1, and the small-section double-line tunnel communication channel construction system comprises:

[0026] A concrete pump 3 is located on the ground, and the outlet of the concrete pump 3 is tilted downward to connect to the concrete chute 4; a through hole is opened downward through the ground, and the bottom of the through hole passes through the communication channel arch template 7 to communicate with the inside of the communication channel;

[0027] A straight casting pipe 5, the upper end of which is connected to the concrete chute 4, and the lower end of which passes through the through hole and extends into the communication channel 2;

[0028] The arc casting pipe 6 is in the shape of an arc. The arc casting pipe 5 is located in the connecting channel 2. One end of the arc casting pipe 6 is detachably connected to the lower end of the linear casting pipe 5, and the other end extends into the arch template of the connecting channel.

[0029] In the above technical solution, a through hole is drilled in the ground, and the straight casting pipe 5 is extended into the connecting channel 2 through the through hole, and then connected to the arc casting pipe 6. The concrete falls freely along the straight casting pipe 5 and the arc casting pipe 6 to the inside of the arch template of the connecting channel, and the casting can be completed. In the whole process, there is no need to lay a casting pipe of several hundred meters through the tunnel, and the length of the casting pipe can be shortened to less than 20m, which overcomes many disadvantages brought by the arrangement of long-distance concrete delivery pipelines, greatly increases the casting efficiency of the second lining concrete of the connecting channel, not only saves manpower and material resources, reduces construction costs, but also prevents concrete quality problems such as concrete pipe blockage and segregation.

[0030] According to a preferred embodiment of the utility model, it also includes:

[0031] A concrete transport vehicle 8 is located on the ground, and the concrete pump 3 is installed on the concrete transport vehicle 8.

[0032] According to a preferred embodiment of the utility model, the arc casting pipe 6 is semicircular, which can also be understood as a straight casting pipe passing through the connecting channel arch formwork 7, bending upward 180°, and then extending into the connecting channel arch formwork. The arc casting pipe 6 is extended into the connecting channel arch formwork 7 to directly input concrete into the connecting channel arch formwork 7.

[0033] According to a preferred embodiment of the utility model, the diameter of the through hole is controlled to be 25-35 cm. The pouring pipe adapted to the through hole of such a size can quickly realize the free fall of concrete.

[0034] According to a preferred embodiment of the utility model, the upper end of the linear casting pipe 5 protrudes 30-50 cm above the ground, which is convenient for smooth connection with the concrete chute, and the linear casting pipe 5 needs to be extended out of the ground port and firmly welded with materials such as steel bars, steel pipes or steel sections to ensure that the pipe remains stable during the casting process.

[0035] According to a preferred embodiment of the utility model, the lower end of the straight casting pipe 5 extends out of the communication channel arch template by 5-10 cm, so that the arc casting pipe 5 can be directly disassembled for maintenance during later maintenance.

[0036] According to a preferred embodiment of the utility model, the connection between the linear pouring pipe 5 and the communication channel arch formwork is filled with expansion foam to prevent slurry leakage during concrete pouring.

[0037] Although the implementation scheme of the utility model has been disclosed as above, it is not limited to the applications listed in the specification and implementation modes. It can be fully applied to various fields suitable for the utility model. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the utility model is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A construction casting system for a small-section double-line tunnel communication channel, wherein the communication channel is vertically arranged between two tunnels, and the two ends of the communication channel are connected to the two tunnels respectively, characterized in that: The small-section double-line tunnel connection channel construction pouring system comprises: A concrete pump is located on the ground, and the outlet of the concrete pump is tilted downward to connect to the concrete chute; a through hole is opened downward from the ground, and the bottom of the through hole passes through the arch template of the communication channel to connect to the inside of the communication channel; A linear pouring pipe, the upper end of which is connected to the concrete chute, and the lower end of which passes through the through hole and extends into the communication channel; The arc-shaped casting pipe is in the shape of an arc and is located in the connecting channel. One end of the arc-shaped casting pipe is detachably connected to the lower end of the linear casting pipe, and the other end extends into the arch template of the connecting channel.

2. The small-section double-line tunnel connection channel construction pouring system according to claim 1 is characterized in that: Also includes: The concrete transport vehicle is located on the ground, and the concrete pump is installed on the concrete transport vehicle.

3. The small-section double-line tunnel connection channel construction pouring system according to claim 1 is characterized in that: The arc casting pipeline is semicircular.

4. The small-section double-line tunnel connection channel construction pouring system according to claim 1 is characterized in that: The diameter of the through hole is controlled to be 25-35 cm.

5. The small-section double-line tunnel connection channel construction pouring system according to claim 1 is characterized in that: The upper end of the straight casting pipe is 30-50 cm above the ground.

6. The small-section double-line tunnel connection channel construction pouring system according to claim 1 is characterized in that: The lower end of the straight casting pipe extends out of the communication channel arch formwork by 5-10 cm.

7. The small-section double-line tunnel connection channel construction pouring system according to claim 1 is characterized in that: The connection between the straight casting pipe and the connecting channel arch formwork is filled with expansion foam.

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