Multi-section combined type hole water stop device

Abstract

The utility model relates to a multi-section combined type hole water stop device which is used for being arranged on the outer side of a jacking pipe in a sleeving mode and installed in a reserved hole of a working well and comprises a plurality of guide spacing board modules and flange rings arranged between the guide spacing board modules respectively. The flange rings and the guide spacing plate modules are sequentially connected to form a sleeve-shaped structure with a plurality of connecting nodes, and the inner side ends of the guide spacing plate modules are attached to the jacking pipe; the guide spacing plate module comprises a longitudinal plate and a guide plate which are arranged from outside to inside, an inclined guide-in angle is formed between the guide plate and the guide plate, and the guide plate is inclined towards the direction of the hole; the side end face of the flange ring is tightly attached to and fixedly connected with the longitudinal plate, a concave cavity is formed between the guide plates on the two sides and the bottom face of the flange ring, and a pouring cavity is formed between the concave cavity and the top pipe. The device is easy to install, water and sand are effectively stopped, and construction safety is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of trenchless pipe laying engineering construction, and in particular to a multi-section combined opening water-stopping device. Background Technology

[0002] During the launching and receiving phases of shield tunneling and pipe jacking projects, the reserved opening of the working shaft is slightly larger than the outer diameter of the pipe section. Effective measures must be taken during the jacking process to seal this gap to prevent groundwater and sediment from flowing into the working shaft, causing ground and surrounding building settlement and posing serious safety hazards. Currently, there are two main methods for sealing the tunnel entrance: one is to install a water-stopping device at the entrance, using rubber curtain water-stopping rings and pressure plates. This method has poor water-stopping effect and is prone to piping. The second method is to use a steel casing device, but the construction process is more complex, requiring the reaction frame to be installed by the unit and repeatedly disassembled and reassembled.

[0003] Based on the above situation, there is an urgent need to provide a water-stopping device for openings that is effective and easy to construct, so as to ensure the water-stopping and sand-stopping effect of the device at the opening. Summary of the Invention

[0004] To overcome at least one of the problems mentioned above, this utility model provides an easy-to-install multi-section combined opening water-stopping device that effectively stops water and sand, ensuring construction safety.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a multi-section combined opening water-stopping device, which is used to be sleeved on the outside of the jacking pipe and installed in the reserved opening of the working well. It includes multiple guide spacer modules and flange rings respectively arranged between the guide spacer modules. The flange rings and the guide spacer modules are connected in sequence to form a sleeve-shaped structure with multiple connection nodes. The inner end of the guide spacer module is in contact with the jacking pipe.

[0006] The guide spacer module includes a longitudinal plate and a guide plate arranged from the outside to the inside. The guide plate is inclined at an angle to the fixed part and is inclined towards the opening. The side end face of the flange ring is tightly attached to and fixedly connected to the longitudinal plate. A concave cavity is formed between the guide plates on both sides and the bottom surface of the flange ring. A grouting cavity is formed between the concave cavity and the jacking pipe.

[0007] As a preferred option, a steel brush is installed in the infusion chamber.

[0008] Preferably, the side end face of the flange ring is locked to the longitudinal plate by multiple bolts to form the connection node. The bolts located in the middle pass through the flange ring, the longitudinal plate and the flange ring respectively to fix the connection node that locks the three components.

[0009] Preferably, the longitudinal plate of the guide spacer module located at the opening end is in close contact with the opening end face, the guide plate extends into the opening, and the bolt is pre-embedded in the opening wall.

[0010] Preferably, the sidewall of the flange ring is provided with a grease hole for injecting grease, so that the injection chamber forms a sealing layer.

[0011] Preferably, a pressure monitoring gauge is also provided on the outer wall of the flange ring to monitor the pressure value of the sealing layer in the grease-filled space in real time according to the operating status of the pipe jacking machine, thereby ensuring the water-stopping effect.

[0012] Preferably, the guide spacer module includes a hinged steel pressure plate and a rubber ring, with the rubber ring located on the front side so that the contact surface between the opening end and the guide spacer module is the rubber ring.

[0013] Preferably, a pin sleeve is provided in the middle of the hinge steel pressure plate to form a pin shaft rotation connection, so that the hinge steel pressure plate forms a fixed plate and a flip plate, and the fixed plate, the flip plate and the longitudinal plate and the guide plate are respectively attached to each other.

[0014] The beneficial effects of this utility model are: a multi-section combined opening water-stopping device, which has a simple structure and is easy to install. According to the water and soil conditions, multiple water-stopping rings can be set. When the pipe jacking operation is carried out, the multi-section flange rings, rubber plates and hinged steel pressure plates set at the pipe jacking opening form a sealed space with the jacking machine casing. By injecting grease into the sealed space and setting a water-stopping device with steel brushes, and at the same time setting a pressure gauge to monitor the water pressure at any time, the pressure can be adjusted in a timely manner according to the operating status of the pipe jacking machine. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] Figure 1 This is a structural schematic diagram of the multi-section combined opening water-stopping device of this utility model;

[0017] Figure 2 yes Figure 1 Cross-sectional view of AA in the middle;

[0018] Figure 3 This is a schematic diagram of the overall implementation structure of the multi-section combined opening water-stopping device of this utility model.

[0019] 1. Bolt, 2. Hinged steel pressure plate, 21. Fixing plate, 22. Pin sleeve, 23. Flip plate, 3. Rubber ring, 4. Flange ring, 5. Injection chamber, 6. Pressure monitoring gauge, 7. Grease hole, 8. Steel brush, 9. Jacking pipe. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0021] like Figure 1 The multi-section combined opening water-stopping device shown is used to fit around the outside of the jacking pipe 9 and is installed at the reserved opening of the working well. It is used to seal the gap between the jacking pipe 9 and the reserved opening to prevent groundwater and mud from flowing into the working well through the gap, causing ground and surrounding buildings to settle and bringing serious safety hazards.

[0022] It consists of multiple guide spacer modules and flange ring 4, with flange ring 4 positioned between the guide spacer modules to connect all the guide spacer modules.

[0023] In this embodiment, the guide spacer module consists of a hinged steel pressure plate 2 and a rubber ring 3. The rubber ring 3 is located on the front side so that the contact surface between the opening end and the guide spacer module is the rubber ring 3.

[0024] The flange ring 4 and the guide spacer module are connected in sequence to form a sleeve-shaped structure with multiple connection nodes. The inner end of the guide spacer module is in contact with the jacking pipe 9.

[0025] The guide spacer module includes a longitudinal plate and a guide plate arranged from the outside to the inside. The guide plate is inclined at an angle to the fixed part. The guide plate is inclined towards the opening. The side end face of the flange ring 4 is tightly attached to the longitudinal plate and fixedly connected. A concave cavity is formed between the guide plates on both sides and the bottom surface of the flange ring 4. A grouting chamber 5 is formed between the concave cavity and the jacking pipe 9.

[0026] The injection chamber 5 is equipped with a steel brush 8 to ensure that the grease is evenly distributed within the injection chamber 5.

[0027] The side end face of the flange ring 4 is locked to the longitudinal plate by multiple bolts 1, forming a connection node; the bolts 1 located in the middle pass through the flange ring 4, the longitudinal plate, and the flange ring 4 respectively for fixing, locking the three components. The connection node in the middle connects the three components, while the connection nodes at both ends connect the flange ring 4 and the longitudinal plate, so that the ends can be connected to the wall.

[0028] See Figure 3 The longitudinal plate of the guide partition module located at the opening end is in close contact with the opening end face, the guide plate extends into the opening, and the bolt 1 is pre-embedded in the opening wall.

[0029] The side wall of the flange ring 4 is provided with a grease hole 7 for injecting grease, so that the injection chamber 5 forms a sealing layer.

[0030] A pressure monitoring gauge 6 is also installed on the outer wall of the flange ring 4 to monitor the pressure value of the sealing layer in the grease-filled space in real time according to the operating status of the pipe jacking machine 9, thereby ensuring the water-stopping effect.

[0031] In one embodiment, multiple hinged steel pressure plates 2 are evenly arranged around the perimeter. A pin sleeve 22 is provided in the center of each hinged steel pressure plate 2, forming a pin-shaft rotatable connection. This allows the hinged steel pressure plate 2 to form a fixed plate 21 and a flap 23, with the fixed plate 21 and flap 23 respectively fitting into position with the longitudinal plate and guide plate. This provides better deformation capability, allowing for better fit to the surface of the jacking pipe 9 and adapting to the operation of the jacking pipe 9.

[0032] During the pipe jacking process, when the top surface of the pipe jacking machine casing forms a sealed cavity sequentially with the steel pressure plate, rubber ring, flange ring, steel pressure plate, and rubber ring, an initial pressure value should be set on the pressure monitoring gauge before injecting grease, ensuring that this pressure value is lower than the grease's sealing pressure threshold. For example... Figure 2 The diagram on the left is as follows: Figure 1 Cross-sectional view AA; When grease is injected into the sealed cavity through the grease hole, a steel brush is used to ensure that the grease is evenly distributed in the required sealing space, while the pressure gauge changes are continuously observed and recorded.

[0033] like Figure 2 The diagram on the right illustrates the process. After grease injection, allow a period of time for the grease to fully diffuse and form a sealing layer. Simultaneously, monitor the pressure gauge readings to assess the effectiveness of the seal. If the pressure remains stable and does not rise significantly, it indicates an effective seal and good water-stopping effect. If the pressure continues to rise, it may indicate poor grease sealing and a risk of leakage, requiring further inspection and grease replenishment.

[0034] In practice, the number of flange rings can be selected based on the on-site soil and water conditions. If only one flange ring is used, and the pressure reading on the pressure gauge is unstable and continuously rising, it indicates that the grease sealing effect may be poor, posing a risk of leakage. Further inspection and grease replenishment are necessary. This pipe jacking process wastes time and money. However, using multiple flange rings avoids this situation, further ensuring the water-stopping effect and improving construction efficiency.

[0035] The embodiments of this utility model can be used for circular pipes, rectangular pipes, and irregularly shaped pipes.

[0036] The above descriptions are merely embodiments of this utility model, and common knowledge such as specific structures 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 structure of this utility model, and these should also be considered within the scope of protection of this utility model. These modifications 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 shall 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 multi-section combined opening water-stopping device, used to be fitted over the outside of the jacking pipe and installed at a reserved opening in the working well, characterized in that: It includes multiple guide spacer modules and flange rings respectively disposed between the guide spacer modules. The flange rings and guide spacer modules are connected in sequence to form a sleeve-shaped structure with multiple connection nodes. The inner end of the guide spacer module is in contact with the jacking pipe. The guide spacer module includes a longitudinal plate and a guide plate arranged from the outside to the inside. The guide plate is inclined at an angle to the fixed part and is inclined towards the opening. The side end face of the flange ring is tightly attached to and fixedly connected to the longitudinal plate. A concave cavity is formed between the guide plates on both sides and the bottom surface of the flange ring. A grouting cavity is formed between the concave cavity and the jacking pipe.

2. The multi-section combined opening water-stopping device according to claim 1, characterized in that: The side end face of the flange ring is locked to the longitudinal plate by multiple bolts to form the connection node. The bolts located in the middle pass through the flange ring, the longitudinal plate and the flange ring respectively to fix the connection node that locks the three components.

3. The multi-section combined opening water-stopping device according to claim 2, characterized in that: The longitudinal plate of the guide spacer module located at the opening end is in close contact with the opening end face, the guide plate extends into the opening, and the bolt is pre-embedded in the opening wall.

4. The multi-section combined opening water-stopping device according to claim 1, characterized in that: The flange ring has grease holes on its sidewalls for injecting grease to form a sealing layer in the injection chamber.

5. A multi-section combined opening water-stopping device according to claim 4, characterized in that: The outer wall of the flange ring is also equipped with a pressure monitoring gauge to monitor the pressure value of the sealing layer in the grease-filled space in real time according to the operating status of the pipe jacking machine.

6. A multi-section combined opening water-stopping device according to claim 1, characterized in that: The guide spacer module includes a hinged steel pressure plate and a rubber ring. The rubber ring is located on the front side so that the contact surface between the opening end and the guide spacer module is the rubber ring.

7. A multi-section combined opening water-stopping device according to claim 6, characterized in that: A pin sleeve is provided in the middle of the hinge steel pressure plate to form a pin shaft rotation connection, so that the hinge steel pressure plate forms a fixed plate and a flip plate. The fixed plate, the flip plate and the longitudinal plate and the guide plate are respectively attached to each other.

8. A multi-section combined opening water-stopping device according to claim 7, characterized in that: A steel brush is installed in the infusion chamber.

Images