Rock mass pre-stressed anchor cable grouting system
By designing a rock mass prestressed anchor grouting system including intervention pipe, branch pipe and multiple valves, the problem of difficult control of grouting pressure and pressure stabilization time in the prior art is solved, and efficient and full injection is achieved Slurry effect.
Patent Information
- Application Number
- CN202421128568.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-22
- Publication Date
- 2025-02-25
- Estimated Expiration
- 2034-05-22
AI Technical Summary
The prior art cannot effectively control the grouting pressure and pressure stabilization time, resulting in insufficient grouting pressure and insufficient slurry, which affects grouting efficiency.
A rock prestressed anchor cable grouting system is designed, including an intervention pipe, a branch pipe and multiple valves. Through the opening and closing operation of the valve, the grouting pressure and pressure stabilization time can be controlled to ensure the quality and fullness of the slurry.
The grouting pressure and pressure stabilization time are achieved, the fullness and efficiency of the grouting slurry are improved, and the device is easy to disassemble and install and clean, and has the possibility of multiple use.
Smart Images
Figure CN222525366U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of prestressed anchor cable grouting operations in caverns, slopes and other parts of water conservancy projects, and in particular to a rock mass prestressed anchor cable grouting system. Background Art
[0002] At present, the common method of anchor cable grouting is to directly connect the grouting pipe of the grouting pump to the grouting pipe of the anchor cable. This device cannot meet the grouting pressure and pressure stabilization control, and cannot effectively control different grouting pressures and pressure stabilization, resulting in insufficient grouting pressure and insufficient slurry in the later stage. Therefore, it is necessary to provide a new rock mass prestressed anchor cable grouting system to solve the above technical problems. Utility Model Content
[0003] In order to solve the above technical problems, the utility model provides a rock mass prestressed anchor cable grouting system.
[0004] To achieve the above object, the present invention provides the following technical solutions:
[0005] A rock mass prestressed anchor cable grouting system comprises an intervention pipe whose two ends are respectively connected to a grouting pump pipeline and a grouting inlet pipe buried in the rock mass, a branch pipe is fixedly installed in the middle of the intervention pipe, and a valve C is installed on the branch pipe, valves A and valves B are respectively installed on the intervention pipes on both sides of the branch pipe, and a pressure gauge is also installed on the intervention pipe.
[0006] Preferably, a plurality of support frames for supporting the interventional tube are arranged at the bottom of the interventional tube.
[0007] Preferably, a V-shaped support plate is fixedly mounted on the support frame, and threaded through holes are provided on both side wall portions of the V-shaped support plate, and a threaded fastening screw is inserted into each threaded through hole.
[0008] Preferably, quick connectors are installed at both ends of the intervention tube.
[0009] Preferably, the system further comprises an exhaust pipe pre-buried in the rock wall for exhausting gas, the exhaust pipe being located above the slurry inlet pipe and arranged in parallel and in the same direction as the slurry inlet pipe, and a valve D being installed on the exhaust pipe.
[0010] Preferably, the ends of the exhaust pipe and the slurry inlet pipe located in the rock mass are connected through a gap inside the rock mass.
[0011] Compared with the related art, the rock mass prestressed anchor cable grouting system provided by the utility model has the following beneficial effects:
[0012] 1) An intervention pipe with valve AC is placed on the existing grouting pipeline. Through the coordinated opening and closing operation of valve AC, the quality and pressure of the grout can be observed and determined before the grout is discharged into the rock mass. Grouting can be carried out according to different grouting pressures and different pressure stabilization times to ensure the quality of the grouting grout. The pressure stabilization time is easy to monitor, which can improve the fullness of the grouting slurry and the grouting efficiency;
[0013] 2) The utility model has quick connectors installed at both ends of the intervention tube for easy disassembly and assembly at any time and place, and the device can be cleaned after the grouting is completed, and can be used repeatedly. It is small in size and light in weight, easy to carry, and can meet the grouting work in different occasions and under different requirements. It is easy to use and saves a certain amount of time in the construction method. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 A structural schematic diagram of a preferred embodiment of the rock mass prestressed anchor cable grouting system provided by the utility model;
[0015] Figure 2 for Figure 1 A schematic diagram of the structure of the interventional tube shown;
[0016] Figure 3 for Figure 1 Schematic diagram of the support frame structure shown.
[0017] Numbers in the figure: 1. intervention pipe; 2. branch pipe; 3. valve A; 4. valve B; 5. valve C; 6. pressure gauge; 7. quick connector; 8. support frame; 9. V-shaped support plate; 10. fastening screw; 11. slurry inlet pipe; 12. exhaust pipe; 13. valve D. DETAILED DESCRIPTION
[0018] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.
[0019] See also Figures 1 to 3 The embodiment of the utility model provides a rock prestressed anchor cable grouting system, and the rock prestressed anchor cable grouting system includes: an intervention pipe 1 and a branch pipe 2.
[0020] In the embodiments of the present invention, please refer to Figure 1 and Figure 3A branch pipe 2 is fixedly installed in the middle of the intervention pipe 1, and a valve C5 is installed on the branch pipe 2. Valves A3 and valve B4 are respectively installed on the intervention pipes 1 on both sides of the branch pipe 2. A pressure gauge 6 is also installed on the intervention pipe 1, and quick connectors 7 are installed at both ends of the intervention pipe 1. One end of the intervention pipe 1 is connected to a slurry inlet pipe 11 inserted in the rock wall, an exhaust pipe 12 for exhaust is installed in the rock wall, and a valve D13 is installed on the exhaust pipe 12.
[0021] The steps are as follows:
[0022] A) Before grouting, connect the intervention pipe 1 to the delivery pipe. When grouting starts, open valve A3 and valve B4 first;
[0023] B) When the slurry flowing out of valve B4 is normal, open valve C5 and close valve B4 at the same time;
[0024] C) During the grouting process, observe the status of the exhaust pipe 12. If concentrated liquid flows out, close valve D13 and continue grouting. When the pressure reaches the specification requirements, close valve A3 and valve C5 to maintain a stable pressure. If the pressure drops, open valve A3 and valve C5 to continue grouting until the pressure remains unchanged.
[0025] D) After grouting, close valve C5, remove it quickly from the slurry inlet pipe 11 of the intervention pipe 1, open valve A3 and valve B4 and inject clean water to flush the intervention pipe 1 and the slurry inlet pipe 11;
[0026] In this embodiment, two quick connectors are installed at the two ends of the intervention tube 1 for easy disassembly and assembly at any time and place; at the same time, it can not only ensure the quality of the grouting slurry, but also the device can be cleaned after the grouting is completed, and can be used repeatedly. It is small in size and light in weight, and is easy to carry. It can meet the grouting work in different occasions and under different requirements, is easy to use, and saves a certain amount of time in the construction method;
[0027] Wherein, the intervention tube 1 is made of a galvanized steel pipe with a diameter of 30 mm.
[0028] In the embodiments of the present invention, please refer to Figure 1 and Figure 3 A plurality of support frames 8 for supporting the interventional tube 1 are arranged at the bottom of the interventional tube 1, and a V-shaped support plate 9 is fixedly installed on the support frame 8, and threaded through holes are opened on the two side wall plates of the V-shaped support plate 9, and a threaded fastening screw 10 is inserted into each threaded through hole.
[0029] It should be noted that: after the intervention tube 1 is mounted on the V-shaped support plate 9 on the support frame 8, the intervention tube 1 can be fixed by rotating the fastening screw 10, so the entire intervention tube 1 is easy to install and disassemble;
[0030] It is worth noting that: the grouting pipe can be used for grouting according to different grouting pressures and different pressure stabilization times. The quick connector can be applied to grouting pipes of different diameters. It can ensure the quality of the grouting slurry, and the pressure stabilization time is easy to monitor. It can improve the fullness of the grouting slurry and the grouting efficiency. The structure is simple to manufacture, stable and reliable, simple to operate, easy to carry and install, can be used multiple times, and has economical construction.
[0031] This embodiment has been applied in secret to the construction of an underground factory building. The construction scenario is as follows:
[0032] The rock wall crane beam is arranged in the main and auxiliary plant installation room and a certain section of the main engine room, and the construction length is 144.83m. After the excavation of the rock wall crane beam is completed, due to the presence of dense joints in a certain section of the upstream pile number and a certain section of the downstream pile number, the rock is relatively broken. As the plant continues to excavate downward, the stress and deformation of the side wall and the arch foot will gradually increase. In order to ensure the safe operation of the rock wall crane beam, it is designed to add two rows of anchor cables in the upstream and downstream parts of the main plant. The anchor cables are designed as non-bonded prestressed anchor cables. The design tension of a single anchor cable is 2000KN. There are 38 anchor cables in total. The grouting machine is commonly used in the grouting technique of the prior art to directly connect the grouting pipe. The pressure control is entirely controlled by the pressure gauge on the grouting machine, and this operation is often restricted by the terrain and the distance is far, so it is inconvenient for operators to communicate with each other, and the grouting construction technology is difficult to control. Therefore, after designing and using the scheme recorded in this embodiment, the difficulty of operation is greatly reduced, and the grouting efficiency and effect are guaranteed at the same time.
[0033] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.
Claims
1. A rock mass prestressed anchor cable grouting system, characterized in that: The invention comprises an intervention pipe (1) whose two ends are respectively connected to a grouting pump pipeline and a grouting inlet pipe (11) buried in the rock mass, a branch pipe (2) is fixedly installed in the middle of the intervention pipe (1), and a valve C (5) is installed on the branch pipe (2), valves A (3) and valves B (4) are respectively installed on the intervention pipes (1) on both sides of the branch pipe (2), and a pressure gauge (6) is also installed on the intervention pipe (1).
2. The rock mass prestressed anchor cable grouting system according to claim 1, characterized in that: A plurality of groups of support frames (8) for supporting the intervention tube (1) are arranged at the bottom of the intervention tube (1).
3. The rock mass prestressed anchor cable grouting system according to claim 2, characterized in that: A V-shaped support plate (9) is fixedly mounted on the support frame (8), and threaded through holes are provided on both side walls of the V-shaped support plate (9), and a threaded fastening screw (10) is inserted into each threaded through hole.
4. The rock mass prestressed anchor cable grouting system according to claim 1, characterized in that: Both ends of the intervention tube (1) are equipped with quick connectors (7).
5. The rock mass prestressed anchor cable grouting system according to claim 1, characterized in that: The system further comprises an exhaust pipe (12) pre-buried in the rock wall for exhaust, the exhaust pipe (12) being located above the slurry inlet pipe (11) and arranged in parallel and in the same direction as the slurry inlet pipe (11), and a valve D (13) being installed on the exhaust pipe (12).
6. The rock mass prestressed anchor cable grouting system according to claim 5, characterized in that: The ends of the exhaust pipe (12) and the slurry inlet pipe (11) located inside the rock mass are connected via a gap inside the rock mass.