A processing device for water seepage of water-rich layer tunnel

Abstract

The utility model provides a kind of processing device for water-rich layer tunnel water seepage, it is related to tunnel surrounding rock water discharge technology, specifically discloses that the inside wall of tunnel is provided with several grouting holes, the inner wall of grouting hole is all through grouting pipe injection concrete protection layer;First drain pipe is installed in grouting hole, and the side wall of first drain pipe is provided with several first drain holes communicated with water storage chamber;Annular drain pipe is installed on the inside wall of tunnel, and first drain pipe is communicated with annular drain pipe, and annular drain pipe is communicated with tunnel central water ditch;The organic combination of grouting water plugging and radial drainage not only can effectively prevent the penetration of groundwater, avoid blockage and backflow, ensure the smooth progress of tunnel construction and dry environment inside tunnel.

Description

Technical Field

[0001] This utility model relates to the field of tunnel surrounding rock water drainage technology, and more specifically, to a treatment device for seepage in water-rich tunnels. Background Technology

[0002] Tunnels, as a crucial component of transportation networks, especially long tunnels in mountainous areas, are of paramount importance for enabling major transportation routes to traverse mountains and valleys. With the rapid development of my country's transportation industry, the areas where tunnels are being built are expanding, and the environments in these areas are becoming increasingly harsh. Tunnels traverse vast geological formations with complex groundwater conditions and significant variations in groundwater exposure across different sections. This exposes tunnels to the risk of leakage, often causing water seepage in the tunnel lining, which seriously affects tunnel operation, reduces its quality and lifespan. Therefore, the quality of drainage and waterproofing projects directly impacts the successful completion and safe operation of tunnel projects; hence, it is necessary to pre-emptively drain or reduce water levels during construction.

[0003] In existing technologies, drainage pipes are often laid between the initial support and the secondary lining, and drainage ditches are set up at the bottom of the tunnel to discharge seepage water behind the secondary lining and waterproofing membrane, thereby eliminating water pressure and preventing water pressure accumulation or lining cracking and seepage, which could affect the stability of the support structure and the safe operation of the tunnel. However, during tunnel operation, drainage pipes are often blocked due to physical or chemical deposition. Physical deposition mainly involves small particles such as gravel and silt formed by groundwater seepage eroding the surrounding rock. These small particles enter the drainage pipe with the groundwater and deposit there, causing poor drainage or blockage. Chemical deposition occurs when groundwater, under certain temperature and carbon dioxide conditions, forms magnesium and calcium ion-containing crystals, which gradually form magnesium and calcium crystals. These crystals deposit in the drainage pipe, causing blockage. Furthermore, during rainy weather or when the surrounding rock has a well-developed water system, the groundwater drainage rate is slow, and a large amount of groundwater can still accumulate in the tunnel surrounding rock, posing a certain safety hazard to the normal operation of the tunnel. Therefore, existing drainage structures generally suffer from water seepage and leakage problems, and their drainage efficiency is low, making it difficult to effectively prevent tunnel seepage. Utility Model Content

[0004] The purpose of this invention is to provide a device for treating seepage in water-rich tunnels, which addresses the shortcomings of existing technologies and solves the problems mentioned in the background.

[0005] The technical solution of this utility model is implemented as follows:

[0006] The utility model provides a device for treating seepage in water-rich tunnels. Several grouting holes are opened on the inner wall of the tunnel, and a concrete protective layer is sprayed onto the inner wall of each grouting hole through a grouting pipe. A first drainage pipe is installed in each grouting hole, and several first drainage holes communicating with a water storage chamber are opened on the side wall of the first drainage pipe. A circumferential drainage pipe is installed on the inner wall of the tunnel, and the first drainage pipe is connected to the circumferential drainage pipe. The circumferential drainage pipe is connected to the central ditch of the tunnel.

[0007] In some technical solutions of this utility model, a first plug is installed on the side of the first drainage pipe opposite to the bottom of the grouting hole.

[0008] In some technical solutions of this utility model, a filter layer is sleeved on the outer wall of the first drain pipe.

[0009] In some technical solutions of this utility model, non-woven fabric is filled between the outer wall of the first drain pipe and the filter layer.

[0010] In some technical solutions of this utility model, a drain hose is installed at the output end of the first drain pipe, and the drain hose is connected to the circumferential drain pipe.

[0011] In some technical solutions of this utility model, a fixing structure installed on the tunnel support structure is also included, and the fixing structure is detachably connected to the first drainage pipe.

[0012] In some technical solutions of this utility model, the fixing structure includes two clamps arranged in pairs, which are rotatably connected by a pin, and the free ends of the two clamps are detachably connected by bolts. The first drainage pipe is installed in the installation area enclosed by the two clamps, and a connecting rod that is detachably connected to the tunnel support structure is installed on the pin.

[0013] In some technical solutions of this utility model, the filter layer is a mesh filter.

[0014] Compared with the prior art, the present invention has at least the following advantages or beneficial effects: by using grouting technology to form a waterproof layer around the surrounding rock, groundwater infiltration is prevented, and at the same time, combined with a radial drainage structure, seepage water can be discharged in time, keeping the inside of the tunnel dry.

[0015] The designed multi-layer drainage structure (first drainage pipe, circumferential drainage pipe, etc.) can sequentially guide the water trapped in the grouting hole into the circumferential drainage pipe, and finally into the central ditch, thereby improving drainage efficiency.

[0016] The outer side of the first drain pipe is equipped with a filter layer to prevent large solid particles from entering the drain hole and avoid clogging; the first sealing structure prevents backflow of seepage water and ensures drainage effect.

[0017] The first drainage pipe is connected to the circumferential drainage pipe via a drainage hose, which facilitates docking and installation by operators; the design of the fixed structure ensures that the drainage pipe can be firmly installed on the tunnel support structure to prevent it from falling off.

[0018] This device is suitable for water-rich, highly permeable strata and can effectively solve the seepage problem during tunnel construction, improving the safety and stability of tunnel construction. Through the organic combination of grouting for water plugging and radial drainage, the device not only effectively prevents groundwater infiltration but also efficiently drains seepage water, avoiding blockages and backflow, ensuring the smooth progress of tunnel construction and a dry environment inside the tunnel. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the installation structure of this utility model.

[0020] Figure 2 This is a cross-sectional view of the first drainage pipe in this utility model.

[0021] Figure 3 This is a front view of the fixing structure in this utility model.

[0022] Figure 4 This is a schematic diagram of the connection structure between the fixed structure and the tunnel support structure in this utility model.

[0023] Figure 5 This is a schematic diagram of the installation structure of the sealing block and the first drainage pipe in this utility model.

[0024] Figure label:

[0025] 1. Surrounding rock; 2. First sealing; 3. Circumferential drainage pipe; 4. Drainage hose; 5. Grouting pipe; 7. First drainage pipe; 9. Non-woven fabric; 10. Grouting hole; 11. Clamp; 12. Filter layer; 13. First drainage hole; 14. Tunnel support structure; 16. Connecting rod; 17. Limiting spring; 18. Adjusting ring; 19. Top rod; 20. Edge sealing; 21. Sealing block. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0027] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without inventive effort are within the scope of protection of this invention.

[0028] Example

[0029] This utility model provides a device for treating seepage in tunnels with aquifers, such as... Figures 1-5 As shown, in the actual construction process, after the tunnel excavation section is completed, several grouting holes 10 need to be opened on the inner wall of the tunnel. The inner wall of each grouting hole 10 is sprayed with a concrete protective layer through a grouting pipe 5 to grout and block water. The grouting technology is used to form a waterproof layer around the surrounding rock 1 to prevent the infiltration of groundwater.

[0030] Each grouting hole 10 is equipped with a first drainage pipe 7. Several first drainage holes 13, communicating with the water storage chamber, are formed on the sidewall of the first drainage pipe 7. A circumferential drainage pipe 3 is installed on the inner wall of the tunnel. The first drainage pipe 7 communicates with the circumferential drainage pipe, which in turn communicates with the central drainage ditch of the tunnel. This drainage structure allows water trapped in the grouting holes 10 to be directed into the water storage chamber through the first drainage holes 13, then into the first drainage pipe 7. Seepage flows from the first drainage pipe 7 to the circumferential drainage pipe 3, and finally into the central drainage ditch before being discharged. The combination of the grouting water-blocking layer and radial drainage effectively prevents most water infiltration while promptly draining seepage, improving drainage efficiency and maintaining the dryness of the tunnel interior.

[0031] Preferably, different grouting materials can be used, such as water glass grout, acrylamide and polyurethane grout, cement grout, etc. The grouting pipe 5 can be made of different materials, such as steel pipe, plastic pipe, glass fiber reinforced plastic, etc.

[0032] In some technical solutions of this utility model, a first plug 2 is installed on the side of the first drainage pipe 7 opposite to the bottom of the grouting hole 10, and the first drainage pipe 7 is connected to the first plug 2. The first plug 2 seals the opening of the first drainage pipe 7 at the bottom of the grouting hole 10, so as to prevent water seepage from flowing back and remaining in the grouting hole 10, which would cause water to seep into the tunnel from other areas and result in poor drainage effect of this structure.

[0033] In some technical solutions of this utility model, a filter layer is sleeved on the outer wall of the first drain pipe 7. The filter layer has a metal mesh structure, which can act as a skeleton support and prevent large solid particles from entering the first drain hole 13 and causing the first drain pipe 7 to be blocked.

[0034] In some technical solutions of this utility model, the filter layer 12 is a metal filter with a mesh structure.

[0035] Preferably, the filter layer 12 is positioned between the sidewalls of the first drain pipe 7 and the grouting hole 10. The filter layer 12 has a mesh structure.

[0036] In some technical solutions of this utility model, a non-woven fabric 9 is filled between the filter layer 12 and the first drain pipe 7. The non-woven fabric 9 has good water permeability and can also block fine sand particles mixed in the seepage water, thus preventing the above-mentioned substances from clogging the first drain hole 13 and affecting the drainage effect of this structure.

[0037] Preferably, the nonwoven fabric 9 has a tubular structure.

[0038] In some technical solutions of this utility model, a drain hose 4 is installed at the output end of the first drain pipe 7, and the drain hose 4 is connected to the circumferential drain pipe. The drain hose 4 is connected to the first drain pipe 7 through a pipe joint, and the drain hose 4 is a rubber hose or a telescopic corrugated pipe. This improves the connection between the first drain pipe 7 and the circumferential drain pipe in this structure, making it easier for operators to connect the two and facilitating subsequent installation.

[0039] In some technical solutions of this utility model, a fixing structure is also included, which is installed on the tunnel support structure 14 and is detachably connected to the first drainage pipe 7.

[0040] In some technical solutions of this utility model, the fixing structure includes two clamps 11 arranged in pairs. The two clamps 11 are rotatably connected by a pin, and the free ends of the two clamps 11 are detachably connected by bolts. The first drainage pipe 7 is installed in the installation area enclosed by the two clamps 11. A connecting rod 16, which is detachably connected to the tunnel support structure 14, is installed on the pin. This structure facilitates the fixing of the first drainage pipe 7 to the tunnel support structure 14, preventing the first drainage pipe 7 from falling out of the grouting hole 10 and causing poor drainage performance. The tunnel support structure 14 consists of a steel frame, an initial support, and shotcrete.

[0041] A sealing structure for sealing the grouting hole 10 is installed on the outer wall of the first drain pipe 7. The sealing structure includes a sealing block 21 sleeved on the outer wall of the first drain pipe 7. The sealing block 21 is sleeve-shaped and made of rubber. The sealing block and the first drain pipe 7 are sealed and connected by sealant. The sealing block 21 is partially embedded in the grouting hole 10, which can seal the area of ​​the first drain pipe 7 at the inlet and outlet of the grouting hole 10, preventing water from seeping out from the open end of the grouting hole 10. A limiting spring 17 is sleeved on the outer wall of the first drain pipe 7 and abuts against the sealing block 21. An adjusting ring 18 is installed between the limiting spring 17 and the sealing block. At least three push rods 19 are installed on the side wall of the adjusting ring 18. The sealing block 21 is placed outside the grouting hole 10 and has an annular sealing edge 20. The sealing edge 20 is integrally formed with the sealing block 21. A pressure ring connected to the push rods 19 is installed on the sealing edge 20. As the operator inserts the first drain pipe 7 into the grouting hole 10, the sealing block 21 enters the grouting hole 10 along with the first drain pipe 7. The sealing end of the sealing block 21 gradually enters the gap between the first drain pipe 7 and the main machine hole 10, thereby sealing the area at the inlet and outlet of the grouting hole 10 and preventing water from seeping out from the open end of the grouting hole 10. The limiting spring on the first drain pipe 7 pushes the top rod 19 to apply a thrust to the sealing edge 20, thereby pressing the sealing edge 20 around the grouting hole 10 and improving the sealing effect of the sealing block 21 on the first drain pipe 7 at the inlet and outlet of the grouting hole 10.

[0042] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A device for treating seepage in tunnels with aquifers, characterized in that, The tunnel has several grouting holes (10) on its inner sidewall. The inner wall of each grouting hole (10) is sprayed with a concrete protective layer through a grouting pipe (5). Each grouting hole (10) is equipped with a first drainage pipe (7). The sidewall of the first drainage pipe (7) has several first drainage holes (13) that communicate with the water storage chamber. The inner sidewall of the tunnel is equipped with a circumferential drainage pipe (3). The first drainage pipe (7) communicates with the circumferential drainage pipe. The circumferential drainage pipe communicates with the central water ditch of the tunnel. The outer sidewall of the first drainage pipe (7) is equipped with a sealing structure for sealing the grouting holes (10).

2. The device for treating seepage in aquifer tunnels according to claim 1, characterized in that, A first plug (2) is installed on the side of the first drain pipe (7) opposite to the bottom of the grouting hole (10).

3. A device for treating seepage in aquifer tunnels according to claim 1 or 2, characterized in that, A filter layer is fitted on the outer wall of the first drain pipe (7).

4. The device for treating seepage in aquifer tunnels according to claim 3, characterized in that, The filter layer and the first drain pipe (7) are filled with non-woven fabric (9).

5. The device for treating seepage in aquifer tunnels according to claim 1, characterized in that, A drain hose (4) is installed at the output end of the first drain pipe (7), and the drain hose (4) is connected to the circumferential drain pipe.

6. The device for treating seepage in aquifer tunnels according to claim 1, characterized in that, It also includes a fixing structure installed on the tunnel support structure, the fixing structure being detachably connected to the first drainage pipe (7).

7. The device for treating seepage in aquifer tunnels according to claim 6, characterized in that, The fixing structure includes two clamps (11) arranged in pairs. The two clamps (11) are rotatably connected by a pin. The free ends of the two clamps (11) are detachably connected by bolts. The first drainage pipe (7) is installed in the installation area enclosed by the two clamps (11). A connecting rod (16) that is detachably connected to the tunnel support structure (14) is installed on the pin.

8. The device for treating seepage in aquifer tunnels according to claim 3, characterized in that, The filter layer is a mesh filter.

9. A device for treating seepage in aquifer tunnels according to claim 1, characterized in that, The sealing structure includes a sealing block (21) sleeved on the outer wall of the first drain pipe (7), a portion of which is embedded in the grouting hole (10), and a limiting spring (17) that abuts against the sealing block (21) is sleeved on the outer wall of the first drain pipe (7).

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