Dual-purpose grouting pipe
By designing a piston and rubber sleeve structure for the dual-purpose grouting pipe, the problems of cement grout leakage and structural strength were solved, achieving efficient grouting quality and cost optimization.
Patent Information
- Application Number
- CN202520196115.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-08
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2035-02-08
AI Technical Summary
The existing prestressed anchor cable grouting pipes have the problem that the sealing tape may fall off during the secondary grouting process, allowing cement slurry to enter the grouting pipe. In addition, the two PVC pipes affect the structural strength of the anchor body and increase costs.
A dual-purpose grouting pipe was designed, including a primary grouting check pipe and a secondary grouting check pipe. By utilizing a combination structure of piston and rubber sleeve, the flow and sealing of cement grout are controlled during the primary and secondary grouting processes, respectively, to prevent grout leakage and pipe blockage.
It effectively prevents cement grout leakage during the grouting process, improves grouting quality, simplifies construction techniques, reduces costs, and enhances the structural strength of the anchor body.
Smart Images
Figure CN223838069U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of geotechnical engineering construction, and more specifically, to a dual-purpose grouting pipe. Background Technology
[0002] Currently, prestressed anchor cables are the most commonly used components in the field of geotechnical anchoring, serving as crucial links between retaining structures and the soil / rock mass. Essentially, a prestressed anchor cable is a tension member with one end "embedded" in the soil or rock layer and the other end connected to the engineering structure. Its basic function is to transfer the tensile force generated by earth pressure, water pressure, or unbalanced loads on the structure to the soil or rock layer, thereby maintaining the safety and stability of the structure. Clearly, the two ends of this important tension member are key aspects of anchor cable (rod) construction. Currently, the construction process for "embedding" anchor bars in the rock or soil mostly involves traditional drilling and grouting, and the quality of the grouting is a critical factor in the success or failure of the anchor cable (rod) installation.
[0003] To ensure grouting quality, a common grouting process involves secondary high-pressure grouting (or secondary high-pressure fracturing grouting) following a primary atmospheric pressure grouting. This increases the bond strength and frictional resistance between the anchor body and the soil / rock mass. In prestressed anchor cable construction, secondary high-pressure grouting effectively fractures, compresses, and compacts the cylindrical anchor body formed by atmospheric pressure grouting, and fills fissures in fractured rock layers. This causes the cylindrical anchor body to expand into an irregular shape, thereby improving the mechanical properties of the surrounding soil / rock mass and significantly increasing the anchor cable's bearing capacity.
[0004] Currently, prestressed anchor cable grouting pipes are fabricated and installed together with the anchor cable skeleton. The procedure involves laying the steel strands straight, setting up an isolation frame every 1.5m, placing the steel strands sequentially into the grooves of the positioning brackets, and then securing them to the brackets with binding wire. The primary grouting pipes, made of PVC pipe, pass through the middle hole of the positioning bracket one by one along the anchor cable axis from beginning to end. The ends of the primary grouting pipes are sealed with tape to prevent mud from the anchor cable holes from entering and clogging the pipes during insertion into the anchor cable skeleton, thus affecting the primary grouting process. The secondary grouting pipe is first inserted into the PVC pipe along the anchor cable axis from the middle hole of the positioning bracket, starting from the free section and moving towards the bottom. After insertion, holes with a diameter of Φ5 are drilled in the PVC pipe within one-third of the bottom of the anchor cable using an electric drill. These holes are used as outlet holes for secondary grouting. The holes are then sealed with tape to prevent cement slurry from entering the secondary grouting pipe through the holes during primary grouting. Finally, the secondary grouting pipe is tied together with the steel strand to prevent it from falling off during anchoring.
[0005] The general method for anchor cable grouting is as follows: Ordinary Portland cement with a water-cement ratio of approximately 1:0.5 is used for anchor cable grouting, along with a cement paste of grade 42.5. A certain amount of admixture may be added if necessary. When using a two-stage grouting process, the primary grouting pressure is 0.5 MPa, and the secondary grouting pressure is 1.5 MPa. Secondary pressure grouting is performed after a certain time has elapsed since the primary grouting.
[0006] During secondary grouting, the sealing tape of the secondary grouting hole is first cracked by high pressure, so that the cement grout can penetrate into the original cement grout and soil through the hole of the PVC pipe under high pressure, so as to achieve the effect of compacting the grout. In addition, the floating water formed above the hole during the first grouting will also be discharged from the hole by the high-pressure cement grout, making the original grout more full.
[0007] The above grouting method has the following drawbacks: First, the secondary grouting pipe is sealed with adhesive tape, which may come loose during the installation of the anchor cable skeleton. This could cause some cement grout to enter the secondary grouting pipe through the opening during the primary grouting, solidifying and causing the secondary grouting pipe to fail. Second, the presence of two PVC pipes within the anchor body affects the structural strength of the anchor body; furthermore, the need to install two PVC pipes increases costs. Utility Model Content
[0008] To overcome the above deficiencies, this application provides a dual-purpose grouting pipe, which aims to improve the problem that some cement slurry enters the grouting pipe from the opening of the secondary grouting pipe during primary grouting.
[0009] This application provides a dual-purpose grouting pipe, including a primary grouting check pipe, a grouting pipe, and a secondary grouting check pipe;
[0010] The primary grouting check pipe has a first grout outlet on its surface, a piston is installed inside the primary grouting check pipe, and a spring is provided inside the primary grouting check pipe to push the piston back to its original position; one end of the primary grouting check pipe is detachably and fixedly connected to one end of the grouting pipe.
[0011] The secondary grouting check pipe is connected in series in the pipeline of the grouting pipe. The end of the secondary grouting check pipe is detachably connected to the end of the grouting pipe. A rubber sleeve is fitted on the surface of the secondary grouting check pipe. A second grout outlet is opened on the surface of the secondary grouting check pipe. The rubber sleeve covers the surface of the second grout outlet. A grout discharge port is opened on the surface of the rubber sleeve. The grout discharge port is offset from the second grout outlet.
[0012] In a preferred embodiment of this utility model, a pipe clamp is snapped onto the outer surface of the grouting pipe, and multiple pipe clamps are provided. The multiple pipe clamps are respectively located at the connection between the primary grouting check pipe and the grouting pipe, and at the connection between the grouting pipe and the secondary grouting check pipe.
[0013] In a preferred embodiment of this utility model, in the pipeline of the grouting pipe, there is one primary grouting check pipe and multiple secondary grouting check pipes. The primary grouting check pipe is located at the end of the grouting pipe, and the secondary grouting check pipes are located in the pipeline of the grouting pipe.
[0014] In a preferred embodiment of this invention, the primary grouting check pipe includes a first pipe body and a pipe plug. The first pipe body is a hollow PVC pipe, and the pipe plug is fixed to one end of the first pipe body. A limiting ring is fixed to the inner wall of the primary grouting check pipe. The pipe plug is a cap located at the tail end of the primary grouting check pipe, serving as a support for a spring. The bottom of the spring is fixed to the pipe plug. The spring force pushes the piston to the first grout outlet, sealing it. At this point, the piston stops at the limiting ring and is limited by it. When the piston is subjected to internal slurry pressure, the piston compresses the spring, causing it to contract backward until the first grout outlet is exposed, thus connecting the inside and outside of the first grout outlet. A protruding structure on the inner wall of the limiting ring prevents the piston from moving forward, ensuring that the piston stops precisely at the first grout outlet.
[0015] In a preferred embodiment of this utility model, the spring is disposed inside the first tube, one end of the spring abuts against the piston, the other end of the spring abuts against the tube plug, and one end of the piston abuts against the limiting ring.
[0016] In a preferred embodiment of this invention, the grouting pipe is a hollow flexible tube with elasticity. The grouting pipe is a PVC hollow flexible tube of a certain diameter, capable of withstanding the flow of high-pressure fluid within it. It possesses a certain degree of elasticity, allowing the insertion of a tubular body with an outer diameter slightly larger than or equal to its own diameter. After the grouting pipe and the inserted body are tightened together with a clamp to accommodate the locking force, they are not easily detached under significant axial tensile force.
[0017] In a preferred embodiment of this invention, a cement slurry tank and a clean water tank are further included. The clean water tank is connected to a cement slurry cleaning pipe. The cement slurry tank is connected to a mud pump that supplies material to the grouting pipe. A cement slurry mixing tank is installed on one side of the cement slurry tank. The cement slurry cleaning pipe is a PVC pipe with an outer diameter smaller than the inner diameter of the grouting pipe. Its function is to inject pumped clean water into the grouting pipe to clean the cement slurry inside the grouting pipe, thus preventing the cement slurry from clogging the grouting pipe after hardening.
[0018] In a preferred embodiment of this utility model, the outer diameter of the first pipe is smaller than the inner diameter of the grouting pipe; the outer diameter of the piston is smaller than the inner diameter of the first pipe; the outer diameter of the secondary grouting check pipe is smaller than the inner diameter of the grouting pipe; and the inner diameter of the rubber sleeve is smaller than the outer diameter of the secondary grouting check pipe.
[0019] Beneficial Effects: This application provides a dual-purpose grouting pipe, with a primary grouting check pipe installed at the very front end of the grouting pipe. When the anchor cable skeleton is inserted into the borehole, the primary grouting check pipe is normally closed, preventing mud from entering the grouting pipe from the first outlet. During primary grouting, the pressure of the cement slurry pushes the piston in the primary grouting check pipe back behind the first outlet, allowing the cement slurry to flow out and fill the borehole space, while simultaneously squeezing out the mud from the borehole, ultimately filling the borehole completely with cement slurry. After primary grouting is completed and the pressure of the cement slurry is released, the spring inside the pipe pushes the piston forward to the limit ring, at which point the piston blocks the first outlet, preventing the cement slurry after primary grouting from flowing back through the first outlet.
[0020] The second grout outlet is located at its waist and is normally tightly sealed by a rubber sleeve. During the first grouting, the cement slurry cannot flow out of the second grout outlet due to the tight rubber sleeve. Similarly, because the second grout outlet is wrapped with a rubber sleeve, the cement slurry from the outside of the pipe cannot enter the pipe. Attached Figure Description
[0021] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.
[0022] Figure 1 This is a three-dimensional structural diagram of the dual-purpose grouting pipe provided in the embodiments of this application;
[0023] Figure 2 A cross-sectional structural diagram provided for an embodiment of this application;
[0024] Figure 3 An exploded view of a primary grouting check pipe provided for an embodiment of this application;
[0025] Figure 4 A three-dimensional structural diagram of the secondary grouting check pipe provided for the embodiments of this application.
[0026] In the diagram: 100, primary grouting check pipe; 101, first pipe body; 103, pipe plug; 105, limiting ring; 107, first grout outlet; 110, piston; 130, spring; 200, grouting pipe; 210, pipe clamp; 300, secondary grouting check pipe; 301, second grout outlet; 310, rubber sleeve; 311, grout drain port. Detailed Implementation
[0027] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.
[0028] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0029] The technical solutions in the embodiments of this application will now be described with reference to the accompanying drawings.
[0030] Please see Figures 1-4 This utility model provides a dual-purpose grouting pipe, including a primary grouting check pipe 100, a grouting pipe 200, and a secondary grouting check pipe 300;
[0031] The primary grouting check pipe 100 has a first grout outlet 107 on its surface. A piston 110 is installed inside the primary grouting check pipe 100. A spring 130 is provided inside the primary grouting check pipe 100 to push the piston 110 back to its original position. One end of the primary grouting check pipe 100 is detachably and fixedly connected to one end of the grouting pipe 200.
[0032] The secondary grouting check pipe 300 is connected in series in the pipeline of the grouting pipe 200. The end of the secondary grouting check pipe 300 is detachably connected to the end of the grouting pipe 200. A rubber sleeve 310 is fitted on the surface of the secondary grouting check pipe 300. A second grout outlet 301 is opened on the surface of the secondary grouting check pipe 300. The rubber sleeve 310 covers the surface of the second grout outlet 301. A grout discharge port 311 is opened on the surface of the rubber sleeve 310. The grout discharge port 311 is offset from the second grout outlet 301.
[0033] In a specific embodiment of this utility model, a clamp 210 is snapped onto the outer surface of the grouting pipe 200. Multiple clamps 210 are provided, and the multiple clamps 210 are respectively provided at the joint between the primary grouting check pipe 100 and the grouting pipe 200, and at the joint between the grouting pipe 200 and the secondary grouting check pipe 300.
[0034] In a specific embodiment of this utility model, in the pipeline of the grouting pipe 200, there is one primary grouting check pipe 100 and multiple secondary grouting check pipes 300. The primary grouting check pipe 100 is located at the end of the grouting pipe 200, and the secondary grouting check pipes 300 are located in the pipeline of the grouting pipe 200.
[0035] In a specific embodiment of this utility model, the primary grouting check pipe 100 includes a first pipe body 101 and a pipe plug 103. The first pipe body 101 is a hollow PVC pipe, and the pipe plug 103 is fixed to one end of the first pipe body 101. A limiting ring 105 is fixed to the inner wall of the primary grouting check pipe 100. The pipe plug 103 is a cap located at the tail end of the primary grouting check pipe 100, and its function is to serve as a support for the spring 130. The bottom of the spring 130 is fixed to the pipe plug 103. The elastic force of the spring 130 can push the piston 110 to the first grout outlet 107, closing the first grout outlet 107. At this time, the position of the piston 110 stops at the limiting ring 105 and is limited by the limiting ring 105. When the piston 110 is subjected to internal mud pressure, the piston 110 compresses the spring 130 to retract until the first grout outlet 107 is exposed, so that the first grout outlet 107 is connected to the inside and outside. The limiting ring 105 is a protruding structure on the inner wall of the first tube 101 to block the forward displacement of the piston 110, so that the piston 110 stops at the position that blocks the first slurry outlet 107.
[0036] In a specific embodiment of this utility model, the spring 130 is disposed inside the first tube 101, one end of the spring 130 abuts against the piston 110, the other end of the spring 130 abuts against the tube plug 103, and one end of the piston 110 abuts against the limiting ring 105.
[0037] In a specific embodiment of this utility model, the grouting pipe 200 is a hollow flexible tube with elasticity. The grouting pipe 200 is a PVC hollow flexible tube of a certain diameter, capable of withstanding the flow of high-pressure fluid within it. It possesses a certain degree of elasticity, allowing the insertion of a tubular body with an outer diameter slightly larger than or equal to its own diameter. After the grouting pipe 200 and the inserted body are tightened together with a pipe clamp 210, they are not easily detached under significant axial tensile force.
[0038] In a specific embodiment of this utility model, a cement slurry tank and a clean water tank are also included. The clean water tank is connected to a cement slurry cleaning pipe. The cement slurry tank is connected to a mud pump that supplies material to the grouting pipe 200. A cement slurry mixing tank is installed on one side of the cement slurry tank. The cement slurry cleaning pipe is a PVC pipe with an outer diameter smaller than the inner diameter of the grouting pipe 200. Its function is to inject pumped clean water into the grouting pipe 200 to clean the cement slurry inside the grouting pipe 200, thus preventing the cement slurry from clogging the grouting pipe 200 after hardening.
[0039] In a specific embodiment of this utility model, the outer diameter of the first pipe body 101 is smaller than the inner diameter of the grouting pipe 200; the outer diameter of the piston 110 is smaller than the inner diameter of the first pipe body 101; the outer diameter of the secondary grouting check pipe 300 is smaller than the inner diameter of the grouting pipe 200; and the inner diameter of the rubber sleeve 310 is smaller than the outer diameter of the secondary grouting check pipe 300.
[0040] The outer diameter of the first pipe body 101 is slightly smaller than the inner diameter of the grouting pipe 200. The first grout outlet 107 is located at the waist of the first pipe body 101, and there are two symmetrically arranged first grout outlets 107.
[0041] The piston 110 is a cylindrical solid body with an outer diameter slightly smaller than the inner diameter of the first tube 101. The piston 110 can slide freely and reciprocate within the first tube 101. When it moves to the position of closing the first slurry outlet 107, it can prevent liquid from flowing into or out of the check pipe. When it moves away from the first slurry outlet 107, the first slurry outlet 107 opens, and fluid can flow out of the check pipe through the first slurry outlet 107.
[0042] The secondary grouting check pipe 300 is a pipe with an outer diameter slightly smaller than the inner diameter of the grouting pipe 200. It has two second grout outlets 301 at its waist. The two ends of the secondary grouting check pipe 300 are inserted into the grouting pipe 200. After being tightened with pipe clamps 210 on the outside of the grouting pipe 200, the two are not easy to fall off.
[0043] The rubber sleeve 310 is an elastic rubber sleeve with an inner diameter slightly smaller than the outer diameter of the secondary grouting check pipe 300. It can be tightly fitted onto the outside of the secondary grouting check pipe 300. After the rubber sleeve 310 is fitted onto the secondary grouting check pipe 300, adhesive is applied to the inner walls of both ends of the rubber sleeve 310 at corresponding positions on the outer wall of the secondary grouting check pipe 300 to firmly bond it, making it difficult to fall off or move. Several grout discharge ports 311 are provided at the waist of the rubber sleeve 310, offset from the second grout outlet 301. When secondary grouting is performed, the high-pressure cement grout inside the secondary grouting check pipe 300 pushes open the rubber sleeve 310. After the rubber sleeve 310 is pushed open by the high-pressure cement grout, the cement grout can flow out from the grout discharge ports 311 on the rubber sleeve 310. After the secondary grouting is completed and the pressure inside the pipe is released, the rubber sleeve 310, under its elastic action, seals the second grout outlet 301 on the secondary grouting check pipe 300 again, preventing the clean cement slurry from returning into the pipe.
[0044] Usage steps:
[0045] 1. In the same way as conventional anchor cable construction, after the anchor cable skeleton is tied, a 200mm grouting pipe is passed through the middle hole of the positioning bracket one by one from beginning to end along the anchor cable axis until the end of the anchor cable.
[0046] 2. Insert a primary grouting check pipe 100 into the tail end of the grouting pipe 200, and use pipe clamp 210 to tighten the primary grouting check pipe 100 and the grouting pipe 200 to prevent them from falling off.
[0047] 3. Within one-third of the end of the anchorage section, evenly install at least three secondary grouting check pipes 300. The number is determined based on the length of the anchorage section. Cut off a section of the grouting pipe 200 (slightly shorter than the length of the secondary check pipe 300) at the designated installation point. Insert one end of the secondary grouting check pipe 300 into one side of the grouting pipe 200 and tighten it with a pipe clamp 210. Then, tighten the other end of the grouting pipe 200 with a pipe clamp 210. Repeat this process until several secondary grouting check pipes 300 are in place.
[0048] 4. Insert the anchor cable skeleton, which is equipped with the primary grouting check pipe 100 and the secondary grouting check pipe 300, into the anchor cable hole.
[0049] 5. Connect the head of the grouting pipe 200 tightly to the discharge port of the grouting pump. Start the grouting pump and draw the clean cement slurry mixed in the cement slurry mixing tank from the cement slurry pool into the grouting pipe 200. The grouting pressure and quantity shall be in accordance with the regulations.
[0050] 6. After the first grouting is completed, place the inlet nozzle of the grouting pipe 200 into the clean water tank. Connect the cement slurry cleaning pipe and start the grouting pump to draw clean water into the cement slurry cleaning pipe. Slowly insert the cement slurry cleaning pipe from the head of the grouting pipe 200 to the tail of the grouting pipe 200. After cleaning the cement slurry inside the pipe, pull it out.
[0051] 7. Once the specified time has elapsed after the first grouting is completed, the second grouting can be carried out.
[0052] 8. The secondary grouting method involves tightly connecting the outlet of the grouting pump to the grouting pipe 200. Cement slurry is then injected into the grouting pipe 200 under pressure according to the designed pressure.
[0053] 9. Secondary grouting: Grouting only needs to be done once as required. Alternatively, multiple grouting sessions can be performed as needed. After each grouting session, the cement slurry inside the grouting pipe should be rinsed thoroughly with cement slurry.
[0054] The working principle of this dual-purpose grouting pipe is as follows: During use, the primary grouting check pipe 100 is installed at the front end of the grouting pipe 200. When the anchor cable skeleton is inserted into the borehole, the primary grouting check pipe 100 is normally closed, preventing the mud in the borehole from entering the grouting pipe 200 from the first grout outlet 107. During primary grouting, the pressure of the cement slurry pushes the piston 110 in the primary grouting check pipe 100 back behind the first grout outlet 107, and the cement slurry flows out from the first grout outlet 107 to fill the borehole space, while simultaneously squeezing the mud in the borehole out, finally filling the borehole with cement slurry. After the pressure of the cement slurry is released after the first grouting is completed, the spring 130 inside the pipe pushes the piston 110 forward to the limit ring 105 and stops it. At this time, the piston 110 blocks the first grout outlet 107, preventing the cement slurry after the first grouting from flowing back through the first grout outlet 107. The second grout outlet 301 is located at its waist and is normally tightly sealed by a tightly fitted rubber sleeve 310. During the first grouting, because the rubber sleeve 310 is tightly fitted externally, the cement slurry cannot flow out from the second grout outlet 301. Similarly, because the second grout outlet 301 is wrapped with a rubber sleeve 310, the cement slurry from the mud outside the pipe cannot enter the pipe.
[0055] The above description is merely an embodiment of this application and is not intended to limit the scope of protection of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application. It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
Claims
1. A dual-purpose grouting pipe, characterized in that, include A primary grouting check pipe (100) is provided with a first grout outlet (107) on its surface. A piston (110) is installed inside the primary grouting check pipe (100). A spring (130) is provided inside the primary grouting check pipe (100) to push the piston (110) to reset. Grouting pipe (200), one end of the primary grouting check pipe (100) is detachably and fixedly connected to one end of the grouting pipe (200); A secondary grouting check pipe (300) is connected in series in the pipeline of the grouting pipe (200). The end of the secondary grouting check pipe (300) is detachably connected to the end of the grouting pipe (200). A rubber sleeve (310) is fitted on the surface of the secondary grouting check pipe (300). A second grout outlet (301) is opened on the surface of the secondary grouting check pipe (300). The rubber sleeve (310) covers the surface of the second grout outlet (301). A grout discharge port (311) is opened on the surface of the rubber sleeve (310). The grout discharge port (311) is offset from the second grout outlet (301).
2. The dual-purpose grouting pipe according to claim 1, characterized in that, The outer surface of the grouting pipe (200) is fitted with a pipe clamp (210). Multiple pipe clamps (210) are provided. The multiple pipe clamps (210) are respectively located at the junction of the primary grouting check pipe (100) and the grouting pipe (200), and at the junction of the grouting pipe (200) and the secondary grouting check pipe (300).
3. The dual-purpose grouting pipe according to claim 1, characterized in that, In the pipeline of the grouting pipe (200), there is one primary grouting check pipe (100) and multiple secondary grouting check pipes (300). The primary grouting check pipe (100) is located at the end of the grouting pipe (200), and the secondary grouting check pipes (300) are located in the pipeline of the grouting pipe (200).
4. A dual-purpose grouting pipe according to claim 1, characterized in that, The primary grouting check pipe (100) includes a first pipe body (101) and a pipe plug (103). The first pipe body (101) is a hollow PVC pipe. The pipe plug (103) is fixed at one end of the first pipe body (101). A limit ring (105) is fixed on the inner wall of the primary grouting check pipe (100).
5. A dual-purpose grouting pipe according to claim 4, characterized in that, The spring (130) is disposed inside the first tube (101). One end of the spring (130) abuts against the piston (110), and the other end of the spring (130) abuts against the tube plug (103). One end of the piston (110) abuts against the limiting ring (105).
6. A dual-purpose grouting pipe according to claim 1, characterized in that, The grouting pipe (200) is a hollow flexible hose with elasticity.
7. A dual-purpose grouting pipe according to claim 1, characterized in that, It also includes a cement slurry tank and a clear water tank, the clear water tank being connected to a cement slurry cleaning pipe; the cement slurry tank being connected to a mud pump for supplying material to the grouting pipe (200), and a cement slurry mixing tank being installed on one side of the cement slurry tank.
8. A dual-purpose grouting pipe according to claim 4, characterized in that, The outer diameter of the first pipe body (101) is smaller than the inner diameter of the grouting pipe (200); the outer diameter of the piston (110) is smaller than the inner diameter of the first pipe body (101); the outer diameter of the secondary grouting check pipe (300) is smaller than the inner diameter of the grouting pipe (200); and the inner diameter of the rubber sleeve (310) is smaller than the outer diameter of the secondary grouting check pipe (300).