Longitudinal leveling equipment for tunnel

Abstract

The tunnel longitudinal leveling equipment comprises an installation part installed at the bottom end of an arch wall, a fixing part used for fixing a longitudinal blind pipe is arranged at the end, close to the arch wall, of the installation part, the fixing part comprises a pressing piece and an attaching piece, the pressing piece is used for fixing the longitudinal blind pipe to the installation part, and the attaching piece is used for attaching geotechnical cloth to the arch wall. By arranging the mounting part, arranging the mounting part at the bottom end of the arch wall and then fixing the longitudinal blind pipe at the arch bottom through the mounting part, it can be guaranteed that the gradient and linearity of the longitudinal blind pipe reach the standard; and meanwhile, the blind pipe extrudes the attaching piece to approach the arch wall, and the attaching piece leans towards the arch wall and drives the geotechnical cloth to be attached to the arch wall, so that the linearity of the blind pipe can be guaranteed, and meanwhile it can be guaranteed that water flow can smoothly enter the blind pipe.

Description

Technical Field

[0001] This utility model relates to the field of tunnel drainage construction, specifically to tunnel longitudinal leveling equipment. Background Technology

[0002] With the rapid development of my country's high-speed rail, tunnel engineering construction is gradually moving towards a path of high precision and high quality. In the construction of highway tunnels, longitudinal blind pipes are often affected by the buoyancy of concrete and the installation process, resulting in the longitudinal slope of the blind pipes failing to meet design requirements. Therefore, the longitudinal blind pipes need to be wrapped with geotextile or non-woven fabric to prevent impurities such as mud and cement slurry from entering the blind pipes, while also protecting them from the influence of the external environment and ensuring their normal drainage function.

[0003] Furthermore, in existing methods of fixing longitudinal drainage pipes, the positioning of the pipes is affected by the construction quality of the waterproof membrane and the operation of the workers, leading to displacement of the longitudinal drainage pipes. This results in uneven linearity of the longitudinal drainage pipes, which directly affects water flow during use and fails to achieve the expected drainage effect. Based on the above technical problems, the following improvements are proposed. Summary of the Invention

[0004] This utility model aims to provide a tunnel longitudinal leveling device to solve the problem of substandard slope and linearity of longitudinal blind pipes.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a tunnel longitudinal leveling device, including an installation part installed at the bottom of the arch wall, and a fixing part for fixing the longitudinal blind pipe is provided at the end of the installation part near the arch wall. The fixing part includes a pressing part and a bonding part. The pressing part is used to fix the longitudinal blind pipe to the installation part, and the bonding part is used to bond the geotextile to the arch wall.

[0006] The beneficial effects of this solution are as follows: By setting an installation part at the bottom of the arch wall, and then fixing the longitudinal blind pipe to the bottom of the arch through the installation part, the slope and linearity of the longitudinal blind pipe can be guaranteed to meet the standards. Compared with the existing technology, by setting a pressing part and a bonding part, the pressing part presses the blind pipe wrapped with geotextile, and the blind pipe is squeezed and fixed. At the same time, the blind pipe squeezes the bonding part closer to the arch wall, and the bonding part moves closer to the arch wall and drives the geotextile to bond to the arch wall. Therefore, not only can the linearity of the blind pipe be guaranteed, but also the water flow can be smoothly entered into the blind pipe.

[0007] Furthermore, the installation part includes a pad layer disposed at the bottom of the arch, a leveling strip disposed at the top of the pad layer, and a fixing part fixed to one end of the leveling strip near the arch wall.

[0008] The beneficial effects of this scheme are as follows: by setting a bedding layer and installing longitudinal blind pipes in the leveling zone, the scouring of the bedding layer by water flow in the ditch can be effectively reduced, and the leveling zone can be prevented from being contaminated before the secondary lining is poured.

[0009] Furthermore, the mounting section is fixedly equipped with a connecting part.

[0010] Furthermore, the connecting part includes several vertically arranged connecting rods, which are used to reinforce the mounting part.

[0011] Furthermore, the upper part of the longitudinal blind pipe has several water inlet holes for water supply.

[0012] The beneficial effects of this scheme are as follows: because the longitudinal blind pipe is wrapped and positioned on the leveling strip by geotextile, the geotextile separates the arch wall and the secondary lining of the arch wall, which facilitates the geotextile to smoothly guide the water flow of the arch wall into the longitudinal blind pipe. Since the water inlet of the longitudinal blind pipe is opened at the top of the blind pipe, it can effectively prevent water flow from entering between the geotextile and the bottom of the longitudinal blind pipe and affecting the drainage function, thereby ensuring the drainage function of the longitudinal blind pipe.

[0013] Furthermore, both the bonding component and the pressing component are vertically fixed on the leveling belt, and an installation gap is formed between the bonding component and the pressing component for placing the blind tube. A connection gap is opened at the top of the bonding component for the geotextile to pass through.

[0014] The beneficial effects of this solution are as follows: by vertically fixing both the pressing component and the fixing component on the leveling belt, the stability of the longitudinal blind pipe during installation can be guaranteed. At the same time, since the installation gap is set to match the size of the blind pipe to be installed, the blind pipe can squeeze the bonding component by itself when the pressing component is used to fix and press the blind pipe. By setting the connecting part, when the longitudinal blind pipe is installed, the geotextile wraps around the bottom end of the longitudinal blind pipe, and one end of the geotextile passes through the connecting part and is wrapped and fixed with the bonding component. When the bonding component is squeezed, it will drive the geotextile to stick tightly to the arch wall, thereby facilitating the flow of water from the arch wall to the top of the longitudinal blind pipe along the geotextile.

[0015] Furthermore, both the leveling strip and the subbase are cast in place.

[0016] The beneficial effects of this scheme are as follows: the connecting rod is inserted into the leveling strip and the pad layer, so it is fixed inside the installation section when it is poured. As the installation section is poured and formed, the fixing steel bars and joint bars are fixed to the installation section, which can not only firmly install the installation section, but also play a role in connecting and fixing the tunnel secondary lining. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0018] Figure 2 This is an embodiment of the present utility model. Figure 1 A partial structural diagram of the longitudinal blind pipe installation at point A;

[0019] Figure 3 This is an embodiment of the present utility model. Figure 2 A partial structural diagram showing the connection between the pressing component and the geotextile at point B;

[0020] Figure 4 This is a schematic diagram of the longitudinal blind tube in an embodiment of the present invention. Detailed Implementation

[0021] The following detailed description illustrates the specific implementation method:

[0022] The reference numerals in the accompanying drawings include: 1. padding layer; 2. leveling belt; 21. connecting rod; 3. pressing component; 4. bonding component; 5. connection gap; 6. installation gap; 7. longitudinal blind pipe; 71. water inlet hole; 8. geotextile.

[0023] Example

[0024] Tunnel longitudinal leveling equipment, such as Figures 1-4 As shown, the installation part is cast into the bottom of the arch. The installation part includes a bottom layer 1 and a leveling strip 2 cast at the top of the bottom layer 1. During the casting of the bottom layer 1 and the leveling strip 2, a connecting rod 21 is vertically fixed inside them. The connecting rod 21 is a steel bar. During the casting, the connecting rod 21 can make the structure of the installation part more stable. There are several connecting rods 21. Several connecting rods 21 together form a connecting part. At the end of the top of the installation part near the arch wall, a fixing part is fixedly placed during the casting. The fixing part is used to fix the longitudinal blind pipe 7 wrapped by the geotextile 8. The top of the installation part is used to cast the tunnel secondary lining. The connecting part can be connected to the secondary lining to further tighten the secondary lining and ensure the stability of the structure.

[0025] like Figures 1-4As shown, the fixing part includes pressing parts 3 and fitting parts 4, which are vertically fixed on the leveling belt 2. The pressing parts 3 are also made of steel bars. The fitting parts 4 include several vertical steel bars fixed on the leveling belt 2. Each of the several vertically fixed steel bars corresponds to one of the pressing parts 3. The top of each of the several vertical steel bars is connected to a horizontal bar. The horizontal bar is made of steel bar with a connecting gap 5 in the middle. The connecting gap 5 is for the end of the geotextile 8 to pass through and be wrapped. When installing the longitudinal blind pipe 7, the geotextile 8 needs to be wrapped around the bottom of the longitudinal blind pipe 7 first. Then, the short end of the geotextile 8 is passed through the connecting gap 5 and wrapped around the installation part. Then, the longer end of the geotextile 8 is fixed to the arch wall. At the same time, the pressing part 3 is pressed downward by external force. The downward pressing of the longitudinal blind pipe 7 squeezes the bonding part 4. The bonding part 4 is deformed by the compression, which causes the geotextile 8 at the end to press against the arch wall. At this time, the geotextile 8 wrapped around the longitudinal blind pipe 7 is pulled by force on both sides, so that the geotextile 8 and the bottom end of the longitudinal blind pipe 7 are tightly bonded. This allows the water flow from the arch wall to flow into the space between the blind pipe and the geotextile 8 through the gaps between the geotextile 8 on both sides of the blind pipe. Moreover, since the longitudinal blind pipe 7 has a water inlet hole 71 at the top, the water flow will not flow to the bottom end of the longitudinal blind pipe 7 and the geotextile 8, thus improving the drainage performance of the longitudinal blind pipe 7.

[0026] On the other hand, when the secondary lining is poured on the installation part, the weight of the secondary lining itself and the shape design of the pressing part 3 help to increase the contact area between the pressing part 3 and the secondary lining, so that the pressing part 3 will not deform in the opposite direction during long-term use, and the fitting part 4 will also be stably squeezed and will not deform in the opposite direction. Moreover, the pressing part 3 can also support the longitudinal blind tube 7 and prevent the longitudinal blind tube 7 from being deformed by pressure for a long time.

[0027] The above descriptions are merely embodiments of this utility model. Commonly known technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A tunnel longitudinal leveling device, characterized in that: It includes an installation part installed at the bottom of the arch wall. The end of the installation part near the arch wall is provided with a fixing part for fixing the longitudinal blind pipe. The fixing part includes a pressing part and a bonding part. The pressing part is used to fix the longitudinal blind pipe to the installation part, and the bonding part is used to bond the geotextile to the arch wall.

2. The tunnel longitudinal leveling device according to claim 1, characterized in that: The installation part includes a pad layer set at the bottom of the arch, a leveling strip set at the top of the pad layer, and a fixing part fixed to one end of the leveling strip near the arch wall.

3. The tunnel longitudinal leveling device according to claim 2, characterized in that: The mounting section is fixedly equipped with a connecting part.

4. The tunnel longitudinal leveling device according to claim 3, characterized in that: The connecting part includes several vertically arranged connecting rods, which are used to reinforce the mounting part.

5. The tunnel longitudinal leveling device according to claim 4, characterized in that: Several water inlet holes are provided at the top of the longitudinal blind pipe for water supply.

6. The tunnel longitudinal leveling device according to claim 5, characterized in that: Both the bonding component and the pressing component are vertically fixed on the leveling belt. An installation gap is formed between the bonding component and the pressing component for placing blind tubes. A connection gap is opened at the top of the bonding component for geotextile to pass through.

7. The tunnel longitudinal leveling device according to claim 6, characterized in that: The leveling strip and the subbase are both cast in place.

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