Dual-purpose grouting pipe and grouting head for anchor cable grouting

Abstract

The utility model provides a dual-purpose grouting pipe and a grouting head for anchor cable grouting, and belongs to the technical field of pre-stressed anchor cable grouting. The dual-purpose grouting pipe and grouting head for anchor cable grouting comprise a grouting pipe body and a grouting device. The grouting device comprises a grouting pipe body and a grouting device, a grout overflow hole is formed in the surface of the grouting pipe body, an adhesive tape adheres to the surface of the grouting pipe body, the grouting device comprises a grouting pipe set and a plug, a first grout outlet hole is formed in the surface of the grouting pipe set, the plug is in threaded connection with the inner wall of one end of the grouting pipe set, and sealing rings are connected to the two ends of the grouting pipe set. The grouting pipe set and the grouting pipe body are matched, so that grout breaks through the plugging cap and flows into the hole, primary grouting is completed, during secondary grouting, the plug is installed, and the grout breaks through an adhesive tape from the first grout outlet and the grout overflow hole through the matching of the grouting pipe set and the grouting pipe body, so that grouting is completed. And the grouting pile body outside the pipeline and in the hole channel is subjected to high-pressure filling and compacting again.

Description

Technical Field

[0001] This utility model relates to the field of prestressed anchor cable grouting, and more specifically, to a dual-purpose grouting pipe and grouting head for anchor cable grouting. Background Technology

[0002] Prestressed anchor cable (rod) engineering is a common form of support in the field of slope and foundation pit support in geotechnical engineering. Its main mechanism is as follows: prestress is applied to and locked to the free section of the rod (cable) embedded in the rock and soil through the retaining structure. The prestress borne by the rod (cable) is transferred to the anchored pile through the bonded section that is bonded with the grout in the duct. The prestress is then borne by the friction between the anchored section and each rock and soil layer, thus forming a set of retaining structure system.

[0003] Currently, existing grouting methods typically involve binding the primary grouting pipe and the secondary high-pressure grouting pipe to the rod body using positioning rings. The pipe walls are not perforated, and grout exits from the bottom of the hole. During grout exit, the pipe end must not leave the grout surface. The secondary grouting pipe is a high-pressure pipe with its end sealed. Grout exit holes are set every 0.5-0.8m along the axis of the anchoring section at the end of the anchor rod and sealed with tape. This results in incomplete sealing between the end of the secondary grouting pipe and the grout exit holes. After the primary grouting is completed, cement grout enters the secondary grouting pipe, blocking it and preventing the completion of secondary high-pressure grouting. Utility Model Content

[0004] To overcome the above deficiencies, this utility model provides a dual-purpose grouting pipe and grouting head for anchor cable grouting, aiming to improve the problem that the end of the secondary grouting pipe and the grout outlet are not sealed tightly, and that after the primary grouting is completed, cement slurry enters into the secondary grouting pipe and blocks the secondary grouting pipe, thus making it impossible to complete the secondary high-pressure grouting.

[0005] This utility model is implemented as follows:

[0006] This utility model provides a dual-purpose grouting pipe and grouting head for anchor cable grouting, including a grouting pipe body and a grouting device.

[0007] A sealing cap is fitted onto one end of the grouting pipe body, and an overflow hole is formed on the surface of the grouting pipe body. Adhesive tape is adhered to the surface of the grouting pipe body, and the adhesive tape is located on the surface of the overflow hole. The grouting device includes a grouting pipe assembly and a plug. The grouting pipe assembly is slidably disposed within the grouting pipe body, and a first grout outlet hole is formed on the surface of the grouting pipe assembly. The plug is threadedly connected to the inner wall of one end of the grouting pipe assembly. Sealing rings are connected to both ends of the grouting pipe assembly, and the sealing rings are fitted against the inner wall of the grouting pipe body. A grouting hose is connected to the other end of the grouting pipe assembly.

[0008] In one embodiment of this utility model, a one-way valve is provided inside the grouting pipe body, and the one-way valve is located between the sealing cap and the grouting pipe assembly.

[0009] In one embodiment of this utility model, a plurality of overflow holes are provided along the surface of the grouting pipe body, and the adhesive tape is provided in a corresponding manner according to the number of overflow holes.

[0010] In one embodiment of this utility model, the grouting pipe assembly includes a grouting head and two connecting pipes. The two ends of the grouting head are respectively connected to the corresponding connecting pipes, and the surface of the grouting head is provided with a first grout outlet hole. A plurality of first grout outlet holes are provided. The sealing ring is sleeved on the surface of the connecting pipe. One end of one of the connecting pipes is connected to the grouting hose, and one end of the other connecting pipe is threadedly connected to the plug.

[0011] In one embodiment of this utility model, the surface of the grouting head is fitted with a leather sleeve by a first sealing clamp, and the surface of the leather sleeve is provided with a second grout outlet hole. There are a plurality of second grout outlet holes, and the second grout outlet holes are staggered from the first grout outlet holes.

[0012] In one embodiment of this utility model, one end of the connecting pipe is connected to a pipe body, and the grouting hose is sleeved on the surface of the pipe body by a second sealing clamp.

[0013] In one embodiment of this utility model, a grout washing pipe assembly is provided inside the grouting pipe body, and the grout washing pipe assembly is located on one side of the pipe body.

[0014] In one embodiment of this utility model, the washing pipe assembly includes a water supply pipe and a canopy. The water supply pipe is connected to the canopy, and the surface of the canopy is provided with water outlet holes, and a plurality of water outlet holes are provided.

[0015] The beneficial effects of this utility model are as follows: This utility model provides a dual-purpose grouting pipe and grouting head for anchor cable grouting. During the first grouting, the plug is removed, and the grout pump, under normal pressure, uses the cooperation of the grouting pipe assembly and the grouting pipe body to allow the grout to break through the sealing cap and flow into the hole. The grout then returns from outside the pipe to the hole opening. After the liquid level stabilizes and grout is replenished, the first grouting is completed. During the second grouting, the plug is installed. Because both ends are sealed with sealing rings, the grout forms a high-pressure chamber between the grouting pipe body and the grouting pipe assembly. Through the cooperation of the grouting pipe assembly and the grouting pipe body, the grout, under pressure, breaks through the tape from the first grout outlet and overflow hole, and then re-fills and compacts the grouting pile body outside the pipe and inside the hole under high pressure. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, 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 utility model 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.

[0017] Figure 1 This is a schematic diagram of the structure of the dual-purpose grouting pipe and grouting head for anchor cable grouting provided in this embodiment of the utility model;

[0018] Figure 2 A partial cross-sectional view of the front structure of the dual-purpose grouting pipe and grouting head for anchor cable grouting provided in this embodiment of the utility model;

[0019] Figure 3 A schematic diagram of the grouting device provided for an embodiment of this utility model;

[0020] Figure 4 A partial cross-sectional view of the connection between the grouting pipe assembly and the sheath provided for an embodiment of this utility model;

[0021] Figure 5 A schematic diagram of the connection between the grouting hose and the grout washing pipe assembly provided for an embodiment of this utility model.

[0022] In the diagram: 100 - Grouting pipe body; 110 - Sealing cap; 120 - Overflow hole; 130 - Adhesive tape; 140 - One-way valve; 150 - Grout washing pipe assembly; 151 - Water supply pipe; 152 - Umbrella cover; 160 - Water outlet; 200 - Grouting device; 210 - Grouting pipe assembly; 211 - Grouting head; 212 - Connecting pipe; 220 - Plug; 230 - First grout outlet; 240 - Sealing ring; 250 - Grouting hose; 251 - Second sealing clamp; 260 - First sealing clamp; 270 - Sheath; 271 - Second grout outlet; 280 - Pipe body. Detailed Implementation

[0023] 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, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0024] Example

[0025] Please see Figures 1-5This utility model provides a dual-purpose grouting pipe and grouting head for anchor cable grouting, including a grouting pipe body 100 and a grouting device 200.

[0026] The grouting device 200 is installed inside the grouting pipe body 100. The grouting device 200 is used to fill and compact the grouting pile body outside the pipe and inside the duct under high pressure, reducing the possibility that the end of the secondary grouting pipe and the grout outlet hole are not sealed properly. After the primary grouting is completed, the cement slurry enters the secondary grouting pipe and blocks the secondary grouting pipe, thus making it impossible to complete the secondary high-pressure grouting.

[0027] Please see Figures 1-2 One end of the grouting pipe body 100 is fitted with a sealing cap 110, and an overflow hole 120 is opened on the surface of the grouting pipe body 100. Adhesive tape 130 is adhered to the surface of the grouting pipe body 100 and is located on the surface of the overflow hole 120. In specific implementation, the sealing cap 110 is used to prevent the drilling mud from entering the grouting pipe body 100 from the port. The overflow hole 120 is sealed with adhesive tape 130, which can reduce the possibility that the grout will flow out from the overflow hole 120 during a single grouting.

[0028] In this embodiment, a one-way valve 140 is provided inside the grouting pipe body 100. The one-way valve 140 is located between the sealing cap 110 and the grouting pipe assembly 210. In this embodiment, the one-way valve 140 is provided inside the grouting pipe body 100 so that the grout can flow out of the hole from the one-way valve 140 during one normal pressure grouting. After one grouting is completed, it can prevent the cement grout from flowing back into the hole of the grouting pipe body 100. Several overflow holes 120 are provided along the surface of the grouting pipe body 100, and the tape 130 is provided one by one according to the number of overflow holes 120.

[0029] Please see Figures 1-5The grouting device 200 includes a grouting pipe assembly 210 and a plug 220. The grouting pipe assembly 210 is slidably disposed within the grouting pipe body 100, and a first grout outlet hole 230 is opened on the surface of the grouting pipe assembly 210. The plug 220 is threadedly connected to the inner wall of one end of the grouting pipe assembly 210. Both ends of the grouting pipe assembly 210 are connected to sealing rings 240, which fit against the inner wall of the grouting pipe body 100. The other end of the grouting pipe assembly 210 is connected to a grouting hose 250. In specific implementation, one end of the grouting hose 250 is connected to an external grouting pump, and the grout is transported by the grouting pump to the grouting pipe assembly 210 through the grouting hose 250. The plug 220 is threadedly connected to the grouting pipe assembly 210. This design facilitates the removal of the plug 220 by the staff. During the first grouting, the plug 220 can be removed. During the second grouting, the two sets of sealing rings 240 and the grouting pipe assembly 210 form a sealed high-pressure grout chamber. Under pressure, the grout in the pipe is forced out from the first grout outlet 230, and then the tape 130 on the overflow hole 120 is opened. This allows for a second high-pressure filling and compaction of the grouting pile body outside the pipe and inside the duct. At the same time, it reduces the possibility that the end of the secondary grouting pipe and the grout outlet are not properly sealed. After the first grouting is completed, cement grout enters the secondary grouting pipe and blocks the secondary grouting pipe, thus preventing the completion of the second high-pressure grouting. It should be noted that the sealing ring 240 is made of rubber.

[0030] In this embodiment, the grouting pipe assembly 210 includes a grouting head 211 and two connecting pipes 212. Both ends of the grouting head 211 are connected to the corresponding connecting pipes 212. A first grout outlet hole 230 is provided on the surface of the grouting head 211, and several first grout outlet holes 230 are provided. A sealing ring 240 is sleeved on the surface of the connecting pipe 212. One end of one connecting pipe 212 is connected to a grouting hose 250, and one end of the other connecting pipe 212 is threadedly connected to a plug 220. A sleeve 270 is fitted onto the surface of the grouting head 211 through a first sealing clamp 260. A first sealing ring 240 is provided on the surface of the sleeve 270. There are several second grout outlet holes 271, and the second grout outlet holes 271 are staggered from the first grout outlet hole 230. In specific implementation, the sleeve 270 is fitted onto the grouting head 211 through the first sealing clamp 260, which helps to increase the firmness between the sleeve 270 and the grouting head 211. The second grout outlet hole 271 on the sleeve 270 is staggered from the first grout outlet hole 230 on the grouting head 211 tube body, which can reduce the possibility that external grout will seep into the grouting head 211 if the two holes overlap. It should be noted that the sleeve 270 is made of rubber.

[0031] One end of the connecting pipe 212 is connected to the pipe body 280, and the grouting hose 250 is sleeved on the surface of the pipe body 280 through the second sealing clamp 251; a grout washing pipe assembly 150 is provided inside the grouting pipe body 100. The grout washing pipe assembly 150 is located on one side of the pipe body 280. In specific implementation, the input end of the grout washing pipe assembly 150 is connected to the external water supply equipment. After grouting, the grout washing pipe assembly 150 is slowly extended into the grouting pipe body 100 so that it can transport clean water into the grouting pipe body 100, thereby cleaning the grout inside the grouting pipe body 100 and on the grouting pipe assembly 210.

[0032] The slurry washing pipe assembly 150 includes a water supply pipe 151 and an umbrella cover 152. The water supply pipe 151 is connected to the umbrella cover 152. The surface of the umbrella cover 152 is provided with water outlet holes 160, and there are several water outlet holes 160.

[0033] Specifically, the working principle of the dual-purpose grouting pipe and grouting head for anchor cable grouting is as follows: During the first grouting operation, the plug 220 of the grouting head 211 is removed. Under normal pressure, the grout pump pumps the grout from the grouting head 211 through the one-way valve 140, then breaks through the sealing cap 110 at one end of the grouting pipe body 100, flows into the hole, and returns the grout from outside the pipe to the hole opening. After the liquid level stabilizes and grout is replenished, the first grouting operation is completed. During the second grouting operation, the plug 220 on the connecting pipe 212 is installed, and the grouting head 211 is placed between the first end of the anchoring section and the first row of overflow holes 120. Under the action of the grout pump, the grout is pressurized and delivered into the grouting head 211. Under pressure, the grout in the pipe will burst open the grouting head 211 from the first grout outlet hole 230. The outer sheath 270 is then punched through the overflow hole 120 and the tape 130 is broken through. The grouting pile body outside the pipe and inside the duct is then filled and compacted again under high pressure. At the same time, the possibility of the secondary grouting pipe end and the grout outlet not being sealed properly after the first grouting is completed is reduced. The cement grout enters the secondary grouting pipe and blocks the secondary grouting pipe, thus making it impossible to complete the secondary high pressure grouting. Since the two ends are sealed with sealing rings 240, the grout forms a high pressure chamber between the grouting pipe body 100 and the grouting head 211. The grout overflows from the overflow hole 120 of the pipe body and splits and squeezes the pile body formed by the first grouting around it to achieve the purpose of splitting grouting. After grouting, the water pipe 151 is slowly inserted into the grouting pipe body 100 to clean the grout inside the pipe.

[0034] The above description is merely a preferred embodiment of this utility model and is not intended to limit the 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 dual-purpose grouting pipe and grouting head for anchor cable grouting, characterized in that, include The grouting pipe body (100) has a sealing cap (110) fitted at one end, and an overflow hole (120) is opened on the surface of the grouting pipe body (100). Adhesive tape (130) is adhered to the surface of the grouting pipe body (100), and the adhesive tape (130) is located on the surface of the overflow hole (120). Grouting device (200), the grouting device (200) includes grouting pipe assembly (210) and plug (220), the grouting pipe assembly (210) is slidably disposed in the grouting pipe body (100), and the surface of the grouting pipe assembly (210) is provided with a first grout outlet hole (230), the plug (220) is threadedly connected to the inner wall of one end of the grouting pipe assembly (210), both ends of the grouting pipe assembly (210) are connected with sealing rings (240), the sealing rings (240) are in contact with the inner wall of the grouting pipe body (100), and the other end of the grouting pipe assembly (210) is connected to a grouting hose (250).

2. The dual-purpose grouting pipe and grouting head for anchor cable grouting according to claim 1, characterized in that, A one-way valve (140) is provided inside the grouting pipe body (100), and the one-way valve (140) is located between the sealing cap (110) and the grouting pipe assembly (210).

3. The dual-purpose grouting pipe and grouting head for anchor cable grouting according to claim 1, characterized in that, Several overflow holes (120) are provided along the surface of the grouting pipe body (100), and the tape (130) is provided one by one according to the number of overflow holes (120).

4. The dual-purpose grouting pipe and grouting head for anchor cable grouting according to claim 1, characterized in that, The grouting pipe assembly (210) includes a grouting head (211) and two connecting pipes (212). The two ends of the grouting head (211) are respectively connected to the corresponding connecting pipes (212). The surface of the grouting head (211) is provided with the first grout outlet hole (230). There are several first grout outlet holes (230). The sealing ring (240) is sleeved on the surface of the connecting pipe (212). One end of one of the connecting pipes (212) is connected to the grouting hose (250), and the other end of the connecting pipe (212) is threadedly connected to the plug (220).

5. The dual-purpose grouting pipe and grouting head for anchor cable grouting according to claim 4, characterized in that, The surface of the grouting head (211) is fitted with a leather sleeve (270) through a first sealing clamp (260). The surface of the leather sleeve (270) is provided with a second grout outlet hole (271). There are several second grout outlet holes (271), and the second grout outlet holes (271) are staggered from the first grout outlet hole (230).

6. The dual-purpose grouting pipe and grouting head for anchor cable grouting according to claim 5, characterized in that, One end of one of the connecting pipes (212) is connected to the pipe body (280), and the grouting hose (250) is sleeved on the surface of the pipe body (280) by a second sealing clamp (251).

7. The dual-purpose grouting pipe and grouting head for anchor cable grouting according to claim 6, characterized in that, The grouting pipe body (100) is provided with a grout washing pipe assembly (150), which is located on one side of the pipe body (280).

8. The dual-purpose grouting pipe and grouting head for anchor cable grouting according to claim 7, characterized in that, The washing pipe assembly (150) includes a water supply pipe (151) and a canopy (152). The water supply pipe (151) is connected to the canopy (152). The surface of the canopy (152) is provided with water outlet holes (160), and there are several water outlet holes (160).

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