Pipe wall seepage water spiral collecting and discharging system for vertical shaft TBM tunneling construction

Abstract

The utility model discloses a pipe wall seepage water spiral collecting and discharging system for vertical shaft TBM tunneling construction, and belongs to the technical field of vertical shaft construction. A pipe wall seepage water spiral collecting and discharging system for vertical shaft TBM tunneling construction comprises water collecting tank sections which are provided with fixing openings and installed on the inner wall of a vertical shaft at the inclination angle of 45 degrees, a water collecting tank is installed on the inner wall of the vertical shaft of the water collecting tank section located at the tail end, a water suction pump is arranged in the water collecting tank, and the water suction pump pumps accumulated water out of the vertical shaft through a drainage pipeline. A T-shaped connector is formed between every two adjacent water collecting tank sections, a first silica gel strip is installed at each connector, the multiple water collecting tank sections are connected to form a spiral shape, water can be concentrated and guided to the bottommost water collecting tank, a water suction pump arranged inside is automatically started, accumulated water is pumped out of a vertical shaft through a drainage pipeline, and the water collecting tank is arranged at the bottom of the vertical shaft. The whole process can be automatically operated, accumulated water is timely drained, and the influence on the construction environment is avoided.

Description

Technical Field

[0001] This utility model relates to the field of vertical shaft construction technology, and in particular to a spiral collection and discharge system for seepage water from the pipe wall during vertical shaft TBM excavation. Background Technology

[0002] In recent years, with the rapid development of cities and the surge in population density, the transportation pressure on public transportation systems has gradually increased, and surface transportation is approaching saturation. Underground transportation has become an important way to alleviate the pressure on public transportation. Subways in major cities have entered a period of large-scale construction. TBM, as an efficient and safe development method, has been widely used in subway tunnel excavation. According to the construction plan, some shafts are often excavated for auxiliary construction. In order to ensure a good working environment for TBM assembly, the long-term stability of the starting shaft sidewall requires not only sufficient support strength but also good anti-seepage performance and protection from groundwater threats. However, due to the long-term exposure of the starting shaft sidewall, repeated loading of dynamic loads due to material transportation, and complex underground geological conditions, especially in areas with abundant groundwater resources and high groundwater levels, it is easy to cause water leakage in the TBM shaft, resulting in excessive humidity inside the shaft, corrosion of metal parts, and affecting the assembly quality of TBM equipment. At the same time, the large amount of seepage water accumulating at the bottom of the shaft will also seriously affect the construction.

[0003] Currently, during the construction and excavation of vertical shafts, water seepage in the shaft wall is discharged by using a high-pressure pump to remove the water accumulated at the bottom. However, this method is not suitable for TBM vertical shaft construction. If the TBM equipment is soaked in water for a long time, it will not only affect the service life of the equipment, but the water will also mix with the cutting powder rock debris at the working face to form mud, which will affect the removal of slag and construction and excavation. Utility Model Content

[0004] The purpose of this invention is to solve the problem that in the existing technology, TBM equipment is often soaked in water for a long time, which not only affects the service life of the equipment, but also causes the water to mix with the cutting powder and rock debris at the working face to form mud, affecting the removal of slag and construction tunneling. Therefore, this invention proposes a spiral collection and discharge system for seepage water from the pipe wall in vertical shaft TBM tunneling construction.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A spiral collection and drainage system for seepage in the pipe wall during vertical shaft TBM excavation includes a water collection trough segment with a fixed opening, installed at a 45° angle on the inner wall of the vertical shaft. A water collection tank is installed on the inner wall of the vertical shaft at the end of the water collection trough segment. The water collection tank is equipped with a water pump, which pumps the accumulated water out of the vertical shaft through a drainage pipe. A "T"-shaped interface is formed between adjacent water collection trough segments, and a first silicone strip is installed at the interface.

[0007] In order to concentrate and guide water to the bottom water collection tank, preferably, the water collection trough is segmented into arc shapes, and multiple water collection troughs are connected in a spiral shape to adapt to the curvature of the inner wall of the shaft.

[0008] To ensure smoother flow of the seeping groundwater as it enters the collection trough section, the edge of the collection trough section that is in contact with the inner wall of the shaft is rounded and transitions gently into the trough, thereby reducing water flow resistance.

[0009] To further enhance the sealing and stability between the water collection tank section and the inner wall of the shaft, preferably, a second silicone strip with mounting holes is also included, which is installed between the water collection tank section and the inner wall of the shaft.

[0010] To ensure a tight fit between the water collection tank sections and the inner wall of the shaft, effectively preventing water leakage, the mounting holes correspond to the fixing openings, and the diameter of the mounting holes is smaller than that of the fixing openings.

[0011] In order to monitor the water level changes in the water collection tank in real time, preferably, an alarm is installed in the water collection tank.

[0012] Compared with the prior art, this utility model provides a spiral collection and discharge system for seepage water from the pipe wall during vertical shaft TBM tunneling construction, which has the following beneficial effects:

[0013] 1. This spiral collection and drainage system for seepage water in vertical shaft TBM excavation construction uses multiple water collection tanks installed at a 45° angle on the inner wall of the shaft. This ensures that the seeping groundwater can flow smoothly to the bottom, reducing the number of water collection tank segments required while ensuring smooth water flow. The arc-shaped water collection tank segments, connected to form a spiral, help concentrate and guide the water to the bottom collection tank. When water flows into the collection tank, the internal pump automatically starts, pumping the accumulated water out of the shaft through the drainage pipe. The entire process is automated, ensuring timely removal of accumulated water and avoiding impact on the construction environment. This segmented structure facilitates on-site installation and subsequent maintenance, simplifying the operation process. Furthermore, through optimized water flow paths and customized design, the system can effectively collect and quickly drain seeping groundwater.

[0014] 2. This spiral collection and drainage system for seepage in the pipe wall during vertical shaft TBM excavation improves the fit between the water collection tank section and the pipe wall by installing a second silicone strip. The diameter of the mounting hole is smaller than the fixing opening, so when fasteners such as bolts or expansion bolts pass through the mounting hole and are tightened to the fixing opening, the silicone strip is compressed, providing additional sealing pressure. This compression enhances the sealing effect of the silicone strip, ensuring a tight fit between the water collection tank section and the inner wall of the vertical shaft, effectively preventing water leakage. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of a spiral collection and discharge system for seepage water from the pipe wall during vertical shaft TBM tunneling construction, as proposed in this utility model.

[0016] Figure 2 This is a schematic diagram of the segmented structure of a spiral collection and discharge system for seepage in the pipe wall during vertical shaft TBM excavation, as proposed in this utility model.

[0017] Figure 3 This utility model provides a schematic diagram of the water collection trough segment and the installation structure of the second silicone strip for a spiral collection and discharge system for seepage in the pipe wall during vertical shaft TBM excavation.

[0018] Figure 4 This is a schematic diagram of the position of the first silicone strip in a spiral collection and discharge system for seepage in the pipe wall during vertical shaft TBM excavation, as proposed in this utility model. Detailed Implementation

[0019] In the diagram: 1. Water collection tank segment; 101. Fixing port; 2. Water collection tank; 3. Water pump; 4. First silicone strip; 5. Second silicone strip; 501. Mounting hole. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] Example:

[0024] Reference Figures 1-4A spiral collection and drainage system for seepage water in the tunnel wall during vertical shaft TBM excavation includes a water collection trough segment 1. The water collection trough segment 1 is customized according to the tunnel dimensions. Based on actual conditions, each segment of the water collection trough segment 1 has an arc length of approximately 4 meters, an arc angle of approximately 48°, a wall height of 10cm, and a trough width of 20cm. It has a fixing port 101. During installation, it is installed at a 45° angle on the inner wall of the vertical shaft, allowing the seeping groundwater to flow smoothly to the bottom. This also reduces the number of water collection troughs required. Preferably, the water collection trough segment 1 is arc-shaped, and multiple segments connected together form a spiral shape to adapt to the curvature of the inner wall of the vertical shaft. The system is located at the end of the spiral. A water collection tank 2 is installed on the inner wall of the vertical shaft of water tank section 1. The water collection tank 2 is equipped with a water pump 3. When water flows into the water collection tank 2, the water pump 3 pumps the accumulated water out of the vertical shaft through the drainage pipe. This process can be carried out automatically to ensure timely removal of accumulated water and avoid impacting the construction environment. A "T"-shaped interface is formed between adjacent water collection tank sections 1. This interface not only increases the contact area but also provides mechanical stability. A first silicone strip 4 is installed at the interface to ensure the sealing and waterproof performance between the two water collection tank sections 1. Even in the case of slight displacement, the "T"-shaped interface can maintain a good sealing effect.

[0025] This spiral collection and drainage system for seepage water in vertical TBM excavation is customized according to the actual dimensions of the tunnel. Each water collection trough segment 1 is equipped with a fixed opening 101 and installed on the inner wall of the vertical shaft at a 45° angle to ensure that the seeping groundwater can flow smoothly to the bottom. This angle helps to reduce the number of water collection trough segments 1 required while ensuring smooth water flow. The seeping groundwater flows along the vertical shaft wall and enters the installed water collection trough segment 1. Since the water collection trough segment 1 is arc-shaped and forms a spiral after being connected, it helps to concentrate the water and guide it to the bottom water collection tank 2. When the water flows into the water collection tank 2, the internal water pump 3 is automatically started and pumps the water out of the vertical shaft through the drainage pipe. The whole process can be automated to ensure timely removal of water and avoid impact on the construction environment. This segmented structure is easy to install on site and maintain later, simplifying the operation process. At the same time, through optimized water flow path and customized design, the system can effectively collect and quickly drain seeping groundwater.

[0026] In order to allow the seeping groundwater to flow more smoothly when entering the water collection tank section 1, the edge of the side of the water collection tank section 1 that is in contact with the inner wall of the shaft is rounded and smoothly transitions into the tank of the water collection tank section 1. This reduces water flow resistance and ensures that the water can be quickly collected and guided to the bottom.

[0027] When the seeping groundwater flows along the wall of the vertical shaft, it will naturally turn and flow into the interior of the water collection tank section 1 after encountering the arc-shaped edge of the water collection tank section 1. This design ensures the continuity and smoothness of the water flow path.

[0028] To further enhance the sealing and stability between the water collection trough section 1 and the inner wall of the shaft, the spiral collection and drainage system for seepage in the pipe wall during vertical shaft TBM excavation also includes a second silicone strip 5 with an installation hole 501. This strip is installed between the water collection trough section 1 and the inner wall of the shaft, improving the fit between the water collection trough section 1 and the pipe wall. Furthermore, the installation hole 501 corresponds to the fixing port 101, allowing fasteners to be inserted through the installation hole 501 and tightened in the fixing port 101 during installation. This maintains the silicone strip in a compressed state, providing better sealing and stability. The diameter of the installation hole 501 is smaller than that of the fixing port 101, so that when fasteners such as bolts or expansion screws pass through the installation hole 501 and are tightened into the fixing port 101, the silicone strip is compressed, providing additional sealing pressure. This compression enhances the sealing effect of the silicone strip, ensuring a tight fit between the water collection trough section 1 and the inner wall of the shaft, effectively preventing water leakage.

[0029] To further improve the safety and reliability of the spiral collection and discharge system for seepage in the pipe wall during vertical shaft TBM excavation, an alarm is installed in the water collection tank 2. The alarm is a liquid level alarm that can monitor the water level changes in the water collection tank 2 in real time. Through sensor technology, it can accurately sense the rise or fall of the water level and transmit the data to the control system. When the water level reaches the preset safety upper limit, the liquid level alarm will automatically trigger an alarm. This can be an audible and visual alarm or a notification sent to the remote monitoring center via wireless communication, ensuring that relevant personnel can receive warning information in a timely manner and take appropriate measures.

[0030] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A spiral collection and discharge system for seepage water from the pipe wall during vertical shaft TBM excavation, characterized in that, The system includes a water collection trough section (1) with a fixed opening (101) installed at a 45° angle on the inner wall of the shaft. A water collection tank (2) is installed on the inner wall of the shaft at the end of the water collection trough section (1). The water collection tank (2) is equipped with a water pump (3), which pumps the accumulated water out of the shaft through a drainage pipe. Among them, a "T"-shaped interface is formed between adjacent water collection tank segments (1), and a first silicone strip (4) is installed at the interface.

2. The spiral collection and discharge system for seepage water from the pipe wall during vertical shaft TBM tunneling construction according to claim 1, characterized in that, The water collection trough segments (1) are arc-shaped, and multiple water collection trough segments (1) connected together form a spiral shape to adapt to the curvature of the inner wall of the vertical shaft.

3. A spiral collection and discharge system for seepage water from the pipe wall during vertical shaft TBM excavation as described in claim 2, characterized in that, The edge of the water collection trough section (1) that is in contact with the inner wall of the vertical shaft is arc-shaped and smoothly transitions into the trough of the water collection trough section (1) to reduce water flow resistance.

4. A spiral collection and discharge system for seepage water from the pipe wall during vertical shaft TBM tunneling construction, as described in claim 1, is characterized in that... It also includes a second silicone strip (5) having a mounting hole (501) installed between the water collection tank section (1) and the inner wall of the shaft.

5. A spiral collection and discharge system for seepage water from the pipe wall during vertical shaft TBM tunneling construction, as described in claim 4, is characterized in that... The mounting hole (501) corresponds to the fixing port (101), and the diameter of the mounting hole (501) is smaller than that of the fixing port (101).

6. A spiral collection and discharge system for seepage water from the pipe wall during vertical shaft TBM tunneling construction, as described in claim 1, is characterized in that... An alarm is installed inside the water collection tank (2).

Images