Subway tunnel connection channel construction device

Abstract

The utility model relates to the technical field of subway tunnel construction equipment, and discloses a subway tunnel connection channel construction device which comprises a supporting plate, an operation hole is formed in the supporting plate in a penetrating mode, a supporting circular ring is arranged on the inner wall of the operation hole, and a plurality of installation holes are formed in the supporting circular ring in the circumferential direction of the supporting circular ring. A grouting pipeline is inserted into each mounting hole; a horizontal positioning plate is arranged at the bottom of the supporting plate, and a positioning rod is arranged on the positioning plate; according to the pre-supporting device, the construction stratum can be pre-supported, the stability of the stratum is improved, and the construction safety is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of subway tunnel construction equipment, in particular to a subway tunnel communication channel construction device. Background Art

[0002] The subway tunnel connecting passage is a fire evacuation project located between the up and down lines of the subway section. Specifically, the two main tunnels of the up and down lines are connected to play the role of safe evacuation of passengers, tunnel drainage, fire prevention, and fire fighting. During the specific construction, steel-concrete composite segments are usually set on the opposite end faces of the up and down main tunnels corresponding to the designated construction point, and cuttable glass fiber reinforcements are set at the construction position in the middle of the steel-concrete composite segments, so that they can be cut as the splicing construction position of the connecting passage during subsequent construction. In the prior art, after the glass fiber reinforcements are cut, there is a lack of pre-support for the construction stratum, and the stratum at the construction site is unstable during construction excavation, posing a safety hazard. Utility Model Content

[0003] The utility model aims to provide a subway tunnel communication channel construction device, which can pre-support the construction stratum, increase the stability of the stratum and ensure the safety of construction.

[0004] The utility model adopts the following technical solutions:

[0005] A subway tunnel communication channel construction device comprises a support plate, an operation hole is formed through the support plate, a support ring is provided on the inner wall of the operation hole, a plurality of mounting holes are formed on the support ring along its circumferential direction, a grouting pipe is inserted into each of the mounting holes; a horizontal positioning plate is provided at the bottom of the support plate, and a positioning rod is provided on the positioning plate.

[0006] Preferably, a reinforcing diagonal brace is hinged between the positioning plate and the top end of the support plate.

[0007] Preferably, two reinforcing diagonal braces are provided, respectively located on both sides of the length direction of the positioning plate.

[0008] Preferably, the reinforcing diagonal brace includes screws located at both ends, and the thread directions of the two screws are opposite. The ends of the two screws that are away from each other are respectively hinged to the corresponding positioning plate and the support plate, and the ends of the two screws that are close to each other are threadedly arranged in the adjusting screw sleeve.

[0009] Preferably, the adjusting screw sleeve is provided with a socket.

[0010] Preferably, the support plate is an arc-shaped structure.

[0011] Preferably, the support plate is composed of a plurality of split plates, wherein two adjacent plates are detachably connected by bolts.

[0012] Preferably, a protective sleeve extending backwards is arranged inside the operating hole, and the supporting ring is arranged on the inner wall of the protective sleeve.

[0013] Preferably, the front end surface of the support plate is provided with reinforcing ribs.

[0014] Preferably, a rubber gasket is provided on the back of the support plate.

[0015] Compared with the prior art, the utility model has the following beneficial effects: the utility model can provide stable support for the installation of the grouting pipe through the setting of the support plate, and at the same time effectively protect the starting point of the internal construction of the main tunnel to avoid damage to the main tunnel during the construction process; the grouting pipe is inserted into the soil layer to be constructed, and the support and reinforcement of the surrounding strata can be achieved through the grouting operation, thereby ensuring the stability of the strata and improving the safety of construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of an embodiment of the present application;

[0017] Figure 2 It is a side view of an embodiment of the present application. DETAILED DESCRIPTION

[0018] The following is a clear and complete description of the present invention in conjunction with the accompanying drawings and embodiments:

[0019] like Figure 1 to Figure 2 As shown, a subway tunnel communication channel construction device described in the utility model includes a support plate 1, an operation hole 2 is opened through the support plate 1, a support ring 3 is arranged on the inner wall of the operation hole 2, a plurality of mounting holes 4 are opened on the support ring 3 along its circumferential direction, and the spacing of the mounting holes 4 is matched and arranged according to the geological requirements of the construction site, a grouting pipe 5 is inserted in each mounting hole 4, a tip is arranged at the end of the grouting pipe 5, and an overflow hole is arranged on the outer side wall, and the external insertion angle of the grouting pipe 5 is usually 10 degrees to 15 degrees, which is adjusted according to the conditions of the construction stratum; a horizontal positioning plate 6 is arranged at the bottom of the support plate 1, and a positioning rod 11 is arranged on the positioning plate 6, and the positioning rod 11 is used to position and support the support plate 1.

[0020] Specifically, when in use, the support plate 1 is placed inside the main tunnel on one side. After the fiberglass reinforcement on the main tunnel is removed, the stratum of the communication channel is exposed, which becomes the starting point of construction. At this time, the support plate 1 is placed in the main tunnel so that the operation hole 2 corresponds to the circular through hole formed after the fiberglass reinforcement on the main tunnel is removed. At this time, the positioning plate 6 is located on the horizontal platform at the bottom of the main tunnel. A hole can be drilled on the horizontal platform, and the positioning rod 11 is inserted into the drilled hole to fix the support plate 1. After the subsequent construction is completed, the drilled hole is sealed with cement; after the support plate 1 is installed, the support ring is located in the circular hole on the main tunnel, and the grouting pipe 5 is driven into the stratum according to the design requirements for grouting operation. After the grouting is completed, excavation construction is carried out, and the support plate 1 is removed after the construction is completed; the setting of the support plate 1 can not only provide stable support for the installation of the grouting pipe 5, but also effectively protect the starting point of the construction inside the main tunnel, thereby ensuring the safety of the construction.

[0021] Furthermore, in the present embodiment, the support plate 1 is an arc-shaped structure so as to better fit with the inner wall of the main tunnel; in addition, in the present embodiment, the positioning plate 6 and the support ring 3 are also split structures; wherein the front end face of the support plate 1 is provided with reinforcing ribs 7 to enhance its structural strength, and the back side of the support plate 1 is provided with a rubber gasket 8 to enhance the tightness of the support plate 1 with the inner wall of the main tunnel. In addition, in the present embodiment, the support plate 1 is preferably composed of a plurality of split plates, wherein two adjacent plates are detachably connected by bolts, so as to enhance the convenience of installation, disassembly, storage and transportation of the support plate 1. Specifically, two adjacent plates are both provided with connecting holes 9 in the horizontal and vertical directions, and the bolt rod is passed through the connecting hole 9 and then fastened by a nut.

[0022] Furthermore, in this embodiment, a reinforcing diagonal brace is hinged between the positioning plate 6 and the top of the support plate 1. Two reinforcing diagonal braces are provided, which are respectively located on both sides of the length direction of the positioning plate 6, so as to enhance the tightness of the support plate 1 and the inner wall of the main tunnel, and at the same time provide stable support for the support plate 1, and enhance the force bearing capacity of the support plate 1. Specifically, the reinforcing diagonal brace includes screws 10 located at both ends, and the thread directions of the two screws 10 are opposite. The ends of the two screws 10 that are far away are respectively hinged to the corresponding positioning plate 6 and the support plate 1, wherein the hinge rods at the hinge are detachable so as to remove the screws 10; the ends of the two screws 10 that are close to each other are threadedly arranged in the adjusting screw sleeve 12, and the two ends of the adjusting screw sleeve 12 are respectively provided with internal threads matching the corresponding screws 10. After the installation is completed, the screw 10 can be pushed out by rotating the adjusting screw sleeve 12, and then the support plate 1 can be abutted against the inner wall of the main tunnel; preferably, a plug hole 13 is provided on the adjusting screw sleeve to facilitate the insertion of a rod-shaped tool, and the torque increased by the rod-shaped tool can be used to improve the convenience of rotating the adjusting screw sleeve 12.

[0023] In addition, in this embodiment, a protective sleeve 16 extending backward is also provided inside the operating hole 2, and the supporting ring 3 is arranged on the inner wall of the protective sleeve 16; the setting of the protective sleeve 16 can protect the circular through hole opened in the main tunnel, avoid collision damage to the inner wall of the circular hole opened in the main tunnel during subsequent excavation, and realize comprehensive protection of the main tunnel.

[0024] When the utility model is in use, the support plate 1 is first assembled, and then the support plate 1 is installed at the specified position, and finally the grouting pipe 5 is driven into the stratum according to the design requirements to perform grouting operation, and excavation construction is carried out after the grouting is completed, and the support plate 1 is removed after the construction is completed; the advanced grouting pre-support greatly ensures the stability of the stratum during subsequent excavation and ensures the safety of construction; at the same time, the setting of the support plate 1 can not only provide stable support for the installation of the grouting pipe 5, but also effectively protect the starting point of the construction inside the main tunnel, with a simple structure and strong practicality.

Claims

1. A subway tunnel communication channel construction device, characterized in that: It comprises a support plate, an operation hole is formed through the support plate, a support ring is formed on the inner wall of the operation hole, a plurality of mounting holes are formed on the support ring along its circumferential direction, a grouting pipe is inserted in each of the mounting holes; a horizontal positioning plate is formed at the bottom of the support plate, and a positioning rod is formed on the positioning plate.

2. The subway tunnel communication channel construction device according to claim 1 is characterized in that: A reinforcing diagonal brace is hinged between the positioning plate and the top end of the supporting plate.

3. The subway tunnel communication channel construction device according to claim 2 is characterized in that: The reinforcing diagonal braces are provided with two, which are respectively located on both sides of the length direction of the positioning plate.

4. The subway tunnel communication channel construction device according to claim 3 is characterized in that: The reinforcing diagonal brace includes screw rods at both ends, and the thread directions of the two screw rods are opposite. The ends of the two screw rods that are far away are respectively hinged to the corresponding positioning plate and the support plate, and the ends of the two screw rods that are close to each other are threadedly arranged in the adjusting screw sleeve.

5. The subway tunnel communication channel construction device according to claim 4 is characterized in that: The adjusting screw sleeve is provided with a plug hole.

6. The subway tunnel communication channel construction device according to claim 1, characterized in that: The support plate is an arc-shaped structure.

7. The subway tunnel communication channel construction device according to claim 6, characterized in that: The support plate is composed of a plurality of split plates, wherein two adjacent plates are detachably connected by bolts.

8. The subway tunnel communication channel construction device according to claim 1, characterized in that: A protective sleeve extending backward is arranged inside the operating hole, and the supporting ring is arranged on the inner wall of the protective sleeve.

9. The subway tunnel communication channel construction device according to claim 1, characterized in that: The front end surface of the support plate is provided with reinforcing ribs.

10. The subway tunnel communication channel construction device according to claim 1, characterized in that: A rubber gasket is arranged on the back of the support plate.

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