Grouting, reinforcing, leaking stoppage and water stopping device for extra-large section

Abstract

The utility model discloses an extra-large section grouting reinforcement leaking stoppage water stop device, which is used for leaking stoppage grouting fluid during extra-large section grouting reinforcement of newly built underground engineering, and comprises a mold and an anchor rod, the mold is arranged at a hole formed in the underground engineering, the anchor rod is locked at the hole by using the mold, the mold is provided with an opening, and the opening is communicated with the mold. An elastic material is laid at the opening of the mold, one end of the anchor rod penetrates through the opening, and a cementing material is laid between the mold and the hole. The position of the anchor rod is fixed through the mold, one end of the anchor rod penetrates through the opening in the mold, the elastic material is laid between the mold and the anchor rod, and meanwhile in the grouting process, the cementing material is added to the shallow position of the anchor rod hole to conduct the gelling effect of grout, internal fluid is blocked, and overflowing is prevented. The problem that a grouting material is prone to leaking from the position of an anchor rod hole during grouting reinforcement is solved, so that the grouting material is more tightly and evenly attached to surrounding rock mass, the effect of anchor rod grouting reinforcement is guaranteed, and meanwhile waste of the grouting material is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel engineering, and more specifically to a large-section grouting reinforcement, leak-stopping and water-stopping device. Background Art

[0002] Anchor grouting reinforcement technology is an advanced technique widely used in underground engineering, providing a solid foundation for the structural stability of various underground projects. This technology leverages the mechanical support of anchors and the chemical curing properties of grouting materials. By combining these two, the technology securely anchors underground structures within stable rock or soil formations, significantly improving the overall stability and load-bearing capacity of underground projects.

[0003] An anchor rod, the core component of this technology, is a long, strip-shaped structure typically made of high-strength steel bars or steel pipes. One end is fixed to the excavated wall or the rock or soil layer exposed after blasting through a specific process, while the other end is connected via a pre-buried grouting pipe. The grouting pipe plays a crucial role in the grouting process. It is not only a channel for the slurry to flow, but also the key to ensuring that the slurry can evenly and fully fill the gaps around the anchor rod. After being injected through the grouting pipe, the grouting material can quickly penetrate into the tiny cracks around the anchor rod and form a high-strength, high-cohesion solid structure after solidification. This process not only effectively seals the cracks in the rock and soil, but also significantly enhances the integrity and bearing capacity of the rock and soil.

[0004] Traditional anchor grouting reinforcement technology, due to the complexity of the geological conditions around the grouting holes and the fluctuation of grouting pressure, is prone to slurry leakage from the anchor hole during the anchor construction process and when the underground is rich in water, resulting in unsatisfactory anchor grouting reinforcement effect. Utility Model Content

[0005] In order to overcome the problem of existing anchor grouting reinforcement that slurry easily leaks from the anchor hole during the anchor construction process and when the underground is rich in water, resulting in unsatisfactory anchor grouting reinforcement effect, the utility model provides a large-section grouting reinforcement leakage-stopping device.

[0006] The technical solution of this utility model is as follows:

[0007] A large-section grouting reinforcement and leak-proof water-stopping device is used to stop leakage of grouting fluid during large-section grouting reinforcement of newly built underground projects. The device includes a mold and an anchor rod. The mold is arranged at a hole opened in the underground project. The mold is used to lock the anchor rod at the hole. The mold has an opening, and an elastic material is laid at the opening of the mold. One end of the anchor rod passes through the opening, and a cementitious material is laid between the mold and the hole.

[0008] According to the above solution of the present invention, the opening is circular, and the diameter of the circular opening on the mold is larger than the diameter of the cross section of the anchor rod.

[0009] According to the above-mentioned solution of the present invention, one end of the mold extends into the hole, and the other end of the mold abuts against the edge of the hole.

[0010] According to the above solution of the utility model, the mold is provided with metal sheets in the depth direction of the hole, at least two of the metal sheets are enclosed in a circle and provided on the surface of the mold, and the surface of each metal sheet is paved with rubber.

[0011] According to the above solution of the utility model, the elastic material is elastic rubber.

[0012] According to the above-mentioned solution of the utility model, the anchor rod is connected to the slurry storage box through a connecting rod.

[0013] According to the above-mentioned solution of the present invention, a valve is provided at the connection between the slurry storage box and the connecting rod.

[0014] The beneficial effect of the utility model according to the above scheme is that the utility model uses a mold to fix the anchor rod position at the hole opened in the underground project, one end of the anchor rod passes through the opening on the mold, and an elastic material is laid between the mold and the anchor rod. At the same time, during the grouting process, a cementitious material is added to the shallow part of the anchor rod hole to perform the gelling effect of the slurry, blocking the internal fluid to prevent overflow, solving the problem that the grouting material is easy to leak from the anchor rod hole position during tunnel grouting reinforcement, thereby achieving a tighter and more uniform fit between the grouting material and the surrounding rock mass, ensuring the effect of tunnel anchor grouting reinforcement, and reducing the waste of grouting material. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural diagram of the present utility model.

[0016] In the drawings, the reference numerals are as follows: 1. slurry storage box; 2. valve; 3. connecting rod; 4. elastic material; 5. mold; 6. gelling material; 7. metal sheet; 8. anchor rod; 9. rubber. DETAILED DESCRIPTION

[0017] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments.

[0018] It should be noted that the terms "including" and "having," as well as any variations thereof, in the specification and claims of the present invention are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units that are not listed, or may optionally include other steps or units that are inherent to the process, method, product, or device. Terms such as "disposed" should be interpreted broadly, for example, and may refer to fixed connections, detachable connections, or integration; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, internal connections between two elements, or interactions between two elements, unless otherwise expressly defined. Terms such as "upper," "lower," "left," "right," "front," "back," and "bottom" indicate directions or positions based on those shown in the accompanying drawings. These are for ease of description only and should not be construed as limitations on the present invention.

[0019] It should be noted that traditional anchor grouting reinforcement technology, due to the complexity of the geological conditions surrounding the grouting holes and the fluctuation of grouting pressure, is prone to grouting from the anchor holes during the anchoring process and when the ground is rich in water, resulting in unsatisfactory anchor grouting reinforcement results. The properties of the grouting material may change, affecting the injection and adhesion of the grouting material, thereby reducing the stability and bearing capacity of the reinforcement. The stress generated by the grouting may also be unevenly transmitted to the structure, which may cause local stress concentration and increase the risk of structural damage. The grouting material may not fully penetrate the pores, resulting in poor curing effect. It also results in waste of grouting fluid.

[0020] like Figure 1 As shown, this embodiment provides a large-section grouting reinforcement and leak-stopping device, in which a mold 5 is used to fix the anchor rod 8 at the hole opened in the underground project, one end of the anchor rod 8 passes through the opening of the mold 5, and an elastic material 4 is laid between the mold 5 and the anchor rod 8. At the same time, during the grouting process, a cementitious material 6 is added to the shallow part of the anchor rod 8 hole to perform the gelling effect of the slurry, blocking the internal fluid to prevent overflow, thereby solving the problem that the grouting material is easy to leak from the hole position of the anchor rod 8 during the tunnel grouting reinforcement, thereby achieving a tighter and more uniform fit between the grouting material and the surrounding rock mass, ensuring the effect of the tunnel anchor rod 8 grouting reinforcement, and reducing the waste of grouting material.

[0021] Specifically, the large-section grouting reinforcement and leak-proof water-stopping device is used for plugging the leak of grouting fluid during the large-section grouting reinforcement of a newly built underground project. It includes a mold 5 and an anchor rod 8. The mold 5 is set at the hole opened in the underground project. The mold 5 is used to lock the anchor rod 8 at the hole. The mold 5 has an opening. One end of the anchor rod 8 passes through the opening to extend into the interior of the underground project. The opening of the mold 5 is paved with an elastic material 4. The elastic material 4 has good compressibility and resilience, and can effectively fill the small gap between the anchor rod 8 and the mold 5, and can prevent the grouting fluid from overflowing from between the mold 5 and the anchor rod 8. A cementing material 6 is laid between the mold 5 and the hole. The cementing material 6 can quickly form a solid or semi-solid state after mixing with water, playing the role of initial solidification and rapid sealing of the hole. The use of the cementing material 6 can not only effectively prevent the leakage of the slurry from the hole of the anchor rod 8 in the early stage of grouting, but also create a good sealing environment for subsequent grouting operations, ensuring that the grouting material can be evenly and tightly filled into every gap in the rock mass.

[0022] In one embodiment, the opening is circular, and the diameter of the circular opening on the mold 5 is larger than the diameter of the cross section of the anchor rod 8, so that the anchor rod 8 can pass through the mold 5 smoothly. The diameter of the circular opening is controlled to be slightly larger than the diameter of the cross section of the anchor rod 8, which effectively reduces the friction resistance of the anchor rod 8 when passing through, thereby improving construction efficiency. Elastic rubber is laid at the circular opening of the mold 5, and the anchor rod 8 fits the elastic rubber laid at the opening of the mold 5. This can effectively prevent the grouting fluid from overflowing from the tiny gap between the mold 5 and the anchor rod 8 under high pressure. It can also compensate for the tiny displacement that may occur during the insertion or grouting of the anchor rod 8 through its good elasticity and adaptability, thereby ensuring the smooth progress of the grouting operation. This design significantly improves the success rate of the grouting operation and the quality of the grouting structure.

[0023] In one embodiment, one end of the mold 5 extends into the hole, which helps to ensure that the grouting fluid can be fully filled to the depth of the hole and improve the coverage of the grouting; the other end of the mold 5 abuts the edge of the hole, and the mold 5 can be firmly installed at the hole opened in the underground project to ensure the smooth progress of the grouting process.

[0024] The mold 5 is provided with a metal sheet 7 in the depth direction of the hole. At least two of the metal sheets 7 are enclosed in a circle and are provided on the surface of the mold 5, and rubber 9 is laid on the surface of each metal sheet 7. In the deeper direction of the hole, the metal sheet 7 is sandwiched between the rubber 9, which further improves the waterproof sealing performance. The rigidity and stability of the metal sheet 7 provide additional support for the mold 5, while the rubber 9 layer uses its excellent elasticity and sealing properties to effectively prevent groundwater or external moisture from penetrating into the grouting area through the tiny gap between the mold 5 and the hole wall. At the same time, the form of the metal sheet 7 sandwiched between the rubber 9 further enhances the installation stability of the mold 5. With the cooperation of the metal sheet 7 and the rubber 9 layer, the mold 5 can be stably installed at the hole, ensuring the long-term stability and durability of the grouting structure.

[0025] In one embodiment, the anchor rod 8 is connected to the grouting tank 1 via a connecting rod 3, enabling continuous and efficient grouting operations. The connecting rod 3 not only transfers the grouting fluid to the anchor rod 8 but also ensures stability and safety during the grouting process through its structural strength. The valve 2 provided at the junction of the grouting tank 1 and the connecting rod 3 allows operators to precisely control the grouting flow and grouting time as needed, enabling refined and intelligent management of the grouting operation. This design not only improves the flexibility of the grouting operation, but also reduces the waste of grouting materials and lowers construction costs.

[0026] The utility model is used for grouting and plugging of large-section anchor bolts in shallow buried and dark excavation methods. The following steps are performed:

[0027] Step 1: Pretreatment: Before grouting the anchor bolts 8, pretreatment is performed, including cleaning the work area, such as removing loose soil, dirt on the concrete surface, paint and rust residues, etc. This ensures that the grouting area is clean and tidy, laying a good foundation for subsequent drilling and grouting operations.

[0028] Step 2: Drilling: Drilling is a crucial step in grouting anchor bolts 8. Use specialized drilling equipment to precisely drill holes at the desired locations. The depth, diameter, and angle of the holes must be strictly in accordance with the construction drawings to ensure that the anchor bolts 8 are accurately and securely installed within the holes and that the grouting fluid evenly and fully fills the surrounding spaces.

[0029] Step 3: Clean the drill hole: After drilling, flush the hole with compressed air or water to remove drill cuttings, dust, and other impurities to ensure good adhesion to the hole wall. The cleaned hole should be dry and free of impurities, ready for subsequent anchor bolt installation and grouting operations.

[0030] Step 4: Install anchor rod 8: Insert the prefabricated anchor rod 8 into the drilled hole. The length, diameter, and material of anchor rod 8 should be selected based on the actual project conditions to ensure it can withstand the expected load and has good durability. During installation, ensure that anchor rod 8 fits tightly against the drilled hole wall to avoid excessive gaps that could affect the grouting effect.

[0031] Step 5: Install the grouting reinforcement and leak-proofing device: Use a mold 5 to fix the anchor rod 8 around the hole. The diameter of the circular opening on the mold 5 is slightly larger than the cross-sectional diameter of the anchor rod 8 to ensure that the anchor rod 8 can pass through smoothly. Elastic rubber is laid between the mold 5 and the anchor rod 8. In the depth direction, it is formed by metal sheets 7 sandwiching rubber 9 to achieve a good waterproof seal. At the same time, during the grouting process, gelling material 6 is added to the shallow part of the anchor rod 8 hole. The gelling material 6 can react with the grouting fluid to form a gel, thereby blocking the internal fluid and preventing it from overflowing.

[0032] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all such improvements and changes should fall within the scope of protection of the claims attached to this utility model.

[0033] The above is an exemplary description of the present utility model patent in conjunction with the accompanying drawings. It is obvious that the implementation of the present utility model patent is not limited to the above-mentioned method. As long as various improvements are made using the method concept and technical solution of the present utility model patent, or the concept and technical solution of the present utility model patent are directly applied to other occasions without improvement, they are all within the scope of protection of the present utility model.

Claims

1. A large-section grouting reinforcement and leak-proof water-stopping device, characterized in that: The invention relates to a grouting fluid for plugging leaks during grouting reinforcement of extra-large sections of newly built underground projects, and comprises a mould and an anchor rod. The mould is arranged at a hole opened in the underground project, and the anchor rod is locked by the mould at the hole. The mould has an opening, and an elastic material is laid at the opening of the mould. One end of the anchor rod passes through the opening, and a cementitious material is laid between the mould and the hole.

2. The large-section grouting reinforcement and leak-proof water-stopping device according to claim 1 is characterized in that: The opening is circular, and the diameter of the circular opening on the mold is larger than the diameter of the cross section of the anchor rod.

3. A large-section grouting reinforcement and leak-proofing device according to claim 1 or 2, characterized in that: One end of the mold extends into the hole, and the other end of the mold abuts against the edge of the hole.

4. The large-section grouting reinforcement and leak-proofing device according to claim 3 is characterized in that: The mold is provided with metal sheets in the depth direction of the hole, at least two of the metal sheets are arranged in a circle and are arranged on the surface of the mold, and the surface of each metal sheet is paved with rubber.

5. A large-section grouting reinforcement and leak-proofing device according to claim 1, 2 or 4, characterized in that: The elastic material is elastic rubber.

6. The large-section grouting reinforcement and leak-proof water-stopping device according to claim 1, characterized in that: The anchor rod is connected to the slurry storage box through a connecting rod.

7. The large-section grouting reinforcement and leak-proofing device according to claim 6, characterized in that: A valve is provided at the connection between the slurry storage box and the connecting rod.

Images