Anti-floating anchor rod grouting pressure intelligent regulation and control grouting machine

Abstract

The invention relates to the technical field of building construction, and discloses an anti-floating anchor rod grouting pressure intelligent regulation and control grouting machine which comprises a waterproof integrated assembly, a multi-pipe segmented grouting assembly and an intelligent pressure regulation and control assembly, the waterproof integrated assembly comprises a cup-shaped groove, micro-expansion concrete and a multi-layer waterproof layer assembly, the cup-shaped groove is formed in a base layer, and the multi-layer waterproof layer assembly is arranged in the multi-pipe segmented grouting assembly. The multi-pipe segmented grouting assembly comprises three anchor rod bodies, a grouting pipe A, a grouting pipe B and a grouting pipe C, the grouting pipe A, the grouting pipe B and the grouting pipe C are bound to the anchor rod bodies, and the intelligent pressure regulation and control assembly comprises an intelligent control unit and a grouting assembly; a steel sleeve follow-up hole forming process is fused, the problem that hole forming of the anti-floating anchor rod is difficult is solved, the sequence from the longest grouting pipe to the shortest grouting pipe is adopted, a graded and intermittent grouting mode is carried out, the anchor rod and anchor head node waterproof construction scheme is optimized, an original waterproof node method is changed, and limitation of coiled material type waterproof materials is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of building construction, in particular to a grouting machine for intelligently regulating grouting pressure of an anti-floating anchor rod. Background Art

[0002] During the construction of underground structures on high-water, water-rich bases, the structure's own weight is insufficient to counteract the buoyancy generated by groundwater. Anti-floating anchors are a common technical solution to address the lack of anti-floating properties in the baseplate. However, due to the characteristics of the baseplate, traditional anti-floating anchor construction faces multiple technical bottlenecks. First, due to the high water level and weak base, anchor bolts are prone to collapse during drilling, making it difficult to extract the anchor bolts, affecting the hole. Alternatively, after the anchor bolts are extracted, the collapsed hole blocks the hole, preventing the anchor bolts from being fully lowered and affecting their length. Second, due to their location in high-water, water-rich areas, the groundwater is abundant and under high pressure, making piping a common occurrence. During anchor grouting, the cement slurry can be washed away by piping, making it difficult to ensure the quality of the anchor grouting and affecting the anchor bolt's anti-floating properties. Third, after the anchor bolts are constructed, groundwater can seep up through the anchor bolt grouting or surrounding cracks, seriously compromising the baseplate's waterproofing and posing a risk of leakage.

[0003] To this end, we have launched a grouting machine with intelligent control of anti-floating anchor grouting pressure. Summary of the Invention

[0004] The purpose of the present invention is to provide a grouting machine with intelligent control of anti-floating anchor grouting pressure to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A grouting machine for intelligently regulating grouting pressure of an anti-floating anchor rod, comprising:

[0007] A waterproof integrated component, comprising a cup-shaped groove, micro-expansive concrete and a multi-layer waterproof layer component, wherein the cup-shaped groove is arranged on the base layer;

[0008] A multi-tube segmented grouting assembly, comprising three anchor rod bodies, grouting pipes A, B, and C, which are tied to the anchor rod body;

[0009] An intelligent pressure regulating component comprises an intelligent control unit and a grouting component.

[0010] Preferably, a cushion layer of concrete is provided on the cup-shaped groove, and the micro-expansive concrete is arranged on the cushion layer of concrete.

[0011] Preferably, the multi-layer waterproof layer assembly includes a cement-based waterproof coating layer, an SBS modified asphalt waterproof membrane layer and a polyurethane waterproof coating layer, the cement-based waterproof coating layer is arranged between the micro-expansive concrete and the cushion concrete, the SBS modified asphalt waterproof membrane layer is arranged on the micro-expansive concrete, and the polyurethane waterproof coating layer is arranged between the SBS modified asphalt waterproof membrane layer and the micro-expansive concrete.

[0012] Preferably, the anchor rod body is composed of a plurality of steel bars and a plurality of straight threaded sleeves, both ends of the plurality of steel bars are provided with threaded portions, and the threaded portions on adjacent steel bars are threadedly connected to both ends of the straight threaded sleeves.

[0013] Preferably, the base layer is provided with an anchor hole, a steel casing is provided in the anchor hole, and the three anchor rod bodies, grouting pipe A, grouting pipe B and grouting pipe C are placed in the steel casing.

[0014] Preferably, the A grouting pipe is the full length of the anchor rod, the B grouting pipe is 2 / 3 of the length of the anchor rod, and the C grouting pipe is 1 / 3 of the length of the anchor rod.

[0015] Preferably, an expansion waterstop strip is provided on the cement-based waterproof coating layer, and a waterstop steel plate is provided on the steel bar.

[0016] Preferably, the grouting assembly includes a grouting pump, a connecting pipe, three branch pipes and a control valve. The grouting pump is connected to one end of the connecting pipe, and the other end of the connecting pipe is connected to the three branch pipes through a four-way joint. The control valves are respectively installed on the three branch pipes.

[0017] Preferably, the intelligent control unit includes a PLC controller, three pressure sensors, several liquid level sensors, an inclination sensor, a temperature sensor and a flow sensor. The PLC controller is installed on the grouting pump, the three pressure sensors are installed on the grouting pipe, and several liquid level sensors are respectively installed on the SBS modified asphalt waterproof membrane layer, one end of the steel casing and the expansion water stop strip. The inclination sensor is installed at one end of the steel pipe, and the temperature sensor and flow sensor are installed on the connecting pipe. The PLC controller is electrically connected to the grouting pump, the control valve, the three pressure sensors, the several liquid level sensors, the inclination sensor, the temperature sensor and the flow sensor, respectively.

[0018] A process flow of an intelligent grouting machine for controlling grouting pressure of an anti-floating anchor bolt includes:

[0019] S1, construction preparation stage;

[0020] Material preparation: concrete, anchor body, concrete strength testing and anchor body mechanical property re-inspection;

[0021] Technical preparation: Surveyors establish construction plane and elevation control network based on control points;

[0022] Labor preparation: Experienced workers who have worked on similar civil engineering projects will be selected to join the project, and the project department will have full-time labor management personnel;

[0023] Equipment preparation: Select anchor drilling machines, grouting machines and other equipment according to construction requirements;

[0024] S2, Positioning and Drilling Stage: Use CAD to export coordinates and accurately measure and place anchor hole locations using a theodolite or total station. Use wooden beams to stabilize the drilling rig and calibrate the drill pipe verticality to ≤1% using a compass or hanging line method. First, drill a 50-100mm positioning hole, then use a steel casing one size larger than the designed hole diameter to follow up the hole. Once the rock is penetrated, use an appropriate drill pipe to drill to the designed depth.

[0025] S3, Rod production and lowering stage: Cut materials according to the design, weld three C32 precision-rolled threaded steel bars into a bundle, tie grouting pipe A (full length), grouting pipe B (2 / 3 length), and grouting pipe C (1 / 3 length), and seal the ends; lower the rod body by crane or tower crane, and weld the horizontal anchor body to the hole before lowering to control the length of the anchor into the base plate;

[0026] S4, Anchor grouting stage: Prepare cement slurry and water glass mixture strictly according to the ratio, stir evenly and then pump; immediately after pulling out the steel casing, grouting is carried out in batches and intermittently in the order of A→B→C pipes, with increasing pressure in sequence, and stop grouting each time until the cement slurry emerges from the ground. In the first grouting, add accelerator to block water, and in subsequent grouting, fill grout and expand the head;

[0027] S5, Anchor bending and cleaning stage: After grouting is completed, the mud around the hole is cleaned, and the anchor body is bent using a small electric hydraulic bending machine. The bending position is accurately controlled according to the calculated elevation and the on-site control point, and the error is adjusted by padding the short anchor body.

[0028] S6, cushion construction stage: clean the earth around the anchor rod, install the cup-shaped formwork, pour the cushion concrete and vibrate it to make it dense, make a 5% slope before the initial setting, remove the formwork and level it after the initial setting;

[0029] S7, Waterproofing Construction Phase: First, clean the base layer and apply a 1.5mm thick cement-based waterproof coating to the groove and the surrounding 100mm area. After drying, fill the cup mouth with C20 micro-expansive concrete and finish it. Then, apply a 1.5mm thick layer of polyurethane waterproof coating and lay a 4mm thick SBS modified asphalt waterproof membrane. The membranes are overlapped in accordance with the regulations, and waterproof asphalt caulking paste is poured at the joints. Finally, a 350mm×250mm waterstop steel plate is welded 600mm above the anchor rod to construct a multi-layer waterproof system.

[0030] S8, protective layer construction stage: After the waterproof joint caulking paste is poured, immediately pour 40-50mm thick C20 fine stone concrete as a protective layer.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] 1. The present invention integrates the steel casing to follow the drilling process, effectively solving the problem of difficulty in drilling holes for anti-floating anchor rods under weak base conditions. It reduces the occurrence of hole collapse during the anchor rod drilling process, greatly improving the efficiency of anchor rod drilling construction and ensuring smooth construction. By optimizing the cup-shaped groove structure, the present invention ensures that the waterproof coating is fully and densely applied, greatly enhancing the waterproof effect of the top of the anchor rod, effectively preventing groundwater leakage, and ensuring the waterproof performance of the underground structure.

[0033] 2. The present invention employs three grouting pipes of different lengths (A, B, and C), with grouting performed in stages and intermittently, starting from the longest to the shortest. In high-water-rich areas with abundant groundwater and high pressure, this unique grouting method ensures that the grouting slurry fully fills the pores, ensuring grouting density and effectively improving grouting quality, thereby enhancing the anchor's anti-buoyancy.

[0034] 3. This invention optimizes the waterproofing construction scheme for anchor bolt and anchor head joints, changing existing waterproofing practices and eliminating the limitations of roll-type waterproofing materials. This new solution offers strong operability and reliable waterproofing performance, improving the waterproofing qualification rate for joints and reducing rework costs due to waterproofing issues. It also shortens the construction period and improves overall construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic diagram of the cross-sectional structure of the present invention;

[0036] Figure 2 This is a schematic diagram of the steel casing structure of the present invention;

[0037] Figure 3 Schematic diagram of the steel bar structure of the present invention;

[0038] Figure 4 This is a schematic diagram of the cross-sectional structure of the grouting pipe of the present invention;

[0039] Figure 5 for Figure 4 Enlarged view of point A in the middle;

[0040] Figure 6 It is a schematic diagram of the process structure of the present invention.

[0041] In the figure: 1. Cup-shaped groove; 2. Micro-expansive concrete; 3. Base layer; 4. Grouting pipe A; 5. Grouting pipe B; 6. Grouting pipe C; 7. Cushion concrete; 8. Cement-based waterproof coating layer; 9. SBS modified asphalt waterproof membrane layer; 10. Polyurethane waterproof coating layer; 11. Rebar; 12. Straight thread sleeve; 13. Threaded part; 14. Anchor hole; 15. Steel casing; 16. Expansion waterstop strip; 17. Waterstop steel plate; 18. Grouting pump; 19. Connecting pipe; 20. Branch pipe; 21. Control valve; 22. PLC controller; 23. Pressure sensor; 24. Liquid level sensor; 25. Tilt sensor; 26. Temperature sensor; 27. Flow sensor. DETAILED DESCRIPTION

[0042] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0043] Example 1:

[0044] See also Figure 1-5 , the present invention provides a technical solution:

[0045] A grouting machine for intelligently regulating grouting pressure of an anti-floating anchor rod, comprising:

[0046] A waterproof integrated component includes a cup-shaped groove 1, a micro-expansive concrete 2, and a multi-layer waterproof layer component. The cup-shaped groove 1 is arranged on a base layer 3, a cushion concrete 7 is provided on the cup-shaped groove 1, and the micro-expansive concrete 2 is provided on the cushion concrete 7. The multi-layer waterproof layer component includes a cement-based waterproof coating layer 8, an SBS modified asphalt waterproof membrane layer 9, and a polyurethane waterproof coating layer 10. The cement-based waterproof coating layer 8 is arranged between the micro-expansive concrete 2 and the cushion concrete 7, the SBS modified asphalt waterproof membrane layer 9 is arranged on the micro-expansive concrete 2, and the polyurethane waterproof coating layer 10 is arranged between the SBS modified asphalt waterproof membrane layer 9 and the micro-expansive concrete 2. An expansion waterstop strip 16 is provided on the cement-based waterproof coating layer 8, and a waterstop steel plate 17 is provided on the steel bar 11.

[0047] A cup-shaped groove 1 is excavated in the base layer 3, ensuring its size and depth meet design requirements to prepare for the subsequent installation of waterproof components. A cushion layer of concrete 7 is poured into the cup-shaped groove 1. Once the cushion layer 7 reaches a certain strength, a layer of cement-based waterproof coating 8 is applied to it, forming the first waterproof barrier. The cement-based waterproof coating 8 penetrates the surface of the base layer 3, forming a dense waterproof membrane that prevents water from penetrating.

[0048] An expansion water stop strip 16 is installed on the cement-based waterproof coating layer 8 to further enhance the waterproof effect and prevent groundwater leakage. The micro-expansion concrete 2 is poured to fill the gaps with its micro-expansion properties, thereby improving the density and waterproof performance of the structure.

[0049] An SBS modified asphalt waterproof membrane layer 9 is laid on the slightly expansive concrete 2. The SBS modified asphalt waterproof membrane layer forms a continuous waterproof barrier on the surface of the slightly expansive concrete 2 due to its good flexibility and puncture resistance. A polyurethane waterproof coating layer 10 is then applied between the membrane layer and the slightly expansive concrete 2. The waterstop steel plate 17 changes the seepage path and extends the seepage distance, thereby jointly realizing the waterproof function of the waterproof integrated component and protecting the grouting structure from groundwater erosion. The construction of the multi-layer waterproof layer assembly is now completed, achieving all-round waterproofing.

[0050] Multi-tube segmented grouting assembly, the multi-tube segmented grouting assembly includes three anchor rod bodies, A grouting pipe 4, B grouting pipe 5 and C grouting pipe 6, A grouting pipe 4, B grouting pipe 5 and C grouting pipe 6 are tied to the anchor rod body, the anchor rod body is composed of a number of steel bars 11 and a number of straight threaded sleeves 12, a number of steel bars 11 are provided with threaded portions 13 at both ends, the threaded portions 13 on adjacent steel bars 11 are threadedly connected to the two ends of the straight threaded sleeve 12, the base layer 3 is provided with an anchor hole 14, the anchor hole 14 is provided with a steel casing 15, the three anchor rod bodies, A grouting pipe 4, B grouting pipe 5 and C grouting pipe 6 are placed in the steel casing 15, A grouting pipe 4 is the full length of the anchor rod, B grouting pipe 5 is 2 / 3 of the length of the anchor rod, and C grouting pipe 6 is 1 / 3 of the length of the anchor rod;

[0051] The steel bar 11 is threadedly connected through a straight threaded sleeve 12 to form an anchor rod body, and grouting pipes A, B and C are tied to the anchor rod body, wherein grouting pipe A runs through the entire length of the anchor rod, grouting pipe B is 2 / 3 of the length of the anchor rod, and grouting pipe C is 1 / 3 of the length of the anchor rod. The multi-tube segmented grouting assembly uses grouting pipes of different lengths to achieve differentiated grouting of different parts of the anchor rod. Grouting pipe A grouts the entire length of the anchor rod to ensure that the entire anchor rod has a certain adhesion with the surrounding soil; grouting pipes B and C focus on grouting the middle and bottom of the anchor rod. Since the bottom of the anchor rod bears a large load, segmented grouting can make the slurry more fully fill the gap between the anchor rod and the soil, thereby improving the anchoring force and pull-out resistance of the anchor rod.

[0052] Anchor holes 14 are drilled into the base layer 3, and steel casings 15 are placed inside them. The three assembled anchor rods, along with grouting pipes A, B, and C, are then placed inside the steel casings 15 to complete the installation. Grouting begins with initial grouting along the entire length of the anchor rod using grouting pipe A to fill the majority of the space. Next, secondary grouting is performed using grouting pipe B, covering two-thirds of the length of the anchor rod to further reinforce the middle section. Finally, grouting pipe C is used to focus grouting along the bottom one-third of the length of the anchor rod to ensure a secure anchoring at the base.

[0053] Intelligent pressure control component, intelligent pressure control component includes intelligent control unit and grouting component, grouting component includes grouting pump 18, connecting pipe 19, three branch pipes 20 and control valve 21, grouting pump 18 is connected to one end of connecting pipe 19, the other end of connecting pipe 19 is connected to three branch pipes 20 through a four-way, control valve 21 is installed on the three branch pipes 20 respectively, intelligent control unit includes PLC controller 22, three pressure sensors 23, several liquid level sensors 24, inclination sensor 25, temperature sensor 26 and flow sensor 27, PLC controller 22 is installed on the grouting pump 18, three pressure sensors 23 are installed on the grouting pipe, several liquid level sensors 24 are respectively installed on the SBS modified asphalt waterproof membrane layer 9, one end of the steel casing 15 and the expansion water stop strip 16, the inclination sensor 25 is installed at one end of the steel pipe, the temperature sensor 26 and the flow sensor 27 are installed on the connecting pipe 19, and the PLC controller 22 is electrically connected to the grouting pump 18, the control valve 21, the three pressure sensors 23, the several liquid level sensors 24, the inclination sensor 25, the temperature sensor 26 and the flow sensor 27.

[0054] Start the grouting pump 18, and the slurry enters each grouting pipe through the connecting pipe 19, the four-way pipe and the branch pipe 20. The pressure sensor 23 installed on the grouting pipe monitors the grouting pressure in real time. When the pressure sensor 23 detects that the grouting pressure is too high, the PLC controller controls the grouting pump 18 to reduce the output pressure, or closes part of the control valve 21 to reduce the grouting flow; if the pressure is too low, the grouting pump 18 is controlled to increase the pressure or open the control valve 21 to increase the grouting flow; the liquid level sensor 24 monitors the liquid level of the coiled material layer, one end of the steel casing 15 and the expansion water stop 16. The liquid level sensor 24 is used to monitor whether there is leakage. If an abnormal increase in the liquid level is detected, it indicates that there may be leakage. The PLC controller can issue an alarm and take corresponding measures; the tilt sensor 25 monitors the inclination angle of one end of the steel casing 15. The tilt sensor 25 Monitor the inclination angle of the steel casing 15 to prevent the anchor rod from shifting during the grouting process; the temperature sensor 26 and the flow sensor 27 monitor the temperature and flow of the slurry in the connecting pipe 19, and the temperature sensor 26 and the flow sensor 27 are used to monitor the state of the slurry to ensure that the grouting work is carried out under appropriate conditions, thereby realizing intelligent and precise control of the grouting process; and transmit these data to the PLC controller in real time. The PLC controller analyzes and processes the received data, and judges whether the grouting pressure is appropriate, whether the liquid level is abnormal, whether the steel casing 15 is tilted, etc. according to the preset parameters and algorithms, and controls the working state of the grouting pump 18 and the opening and closing of the control valve 21 accordingly, realizing intelligent regulation of the grouting pressure.

[0055] Example 2:

[0056] In this embodiment, Figure 6 As shown:

[0057] A process flow of an intelligent grouting machine for controlling grouting pressure of an anti-floating anchor bolt includes:

[0058] S1, construction preparation stage;

[0059] Material preparation: Purchase commercial concrete, steel bars and other materials strictly according to design requirements to ensure that the concrete strength meets the standards and the specifications and quantity of steel bars are accurate;

[0060] Technical preparation: Surveyors establish the construction plane and elevation control network based on the control points; organize personnel to thoroughly familiarize themselves with the drawings, formulate technical and quality assurance measures, prepare detailed technical instructions and work instructions, and pass them on step by step to ensure that the key construction points are fully communicated;

[0061] Labor preparation: Experienced workers who have worked on similar civil engineering projects will be selected to join the project. The project department will have dedicated labor management personnel responsible for supervising and managing the entry and exit registration, salary payment, and other aspects of each subcontracted labor force;

[0062] Equipment preparation: Select anchor drilling machines, grouting machines and other equipment according to construction requirements, ensuring that the equipment has advanced performance and reasonable configuration. Provide qualification certificates and quality certification documents and report them when the machinery enters the site;

[0063] S2, Positioning and Drilling Stage: Use CAD to export coordinates, and accurately measure and place anchor hole positions using a theodolite or total station, with deviations controlled to ≤50mm. Use wooden beams to stabilize the drilling rig, and use a compass or hanging line method to calibrate the verticality of the drill rod to ≤1%. First, drill a 50-100mm positioning hole, then use a steel casing 15mm larger than the designed hole diameter to follow up the hole. After reaching the rock penetration position, use an appropriate drill rod to drill to the designed depth.

[0064] S3, Rod production and lowering stage: Cut materials according to the design, weld three C32 precision-rolled threaded steel bars into a bundle, tie grouting pipe A 4 (full length), grouting pipe B 5 (2 / 3 length), and grouting pipe C (1 / 3 length), and seal the ends; lower the rod using a crane or tower crane. Before lowering, weld the horizontal anchor rod body to the hole to control the anchor length into the base plate and prevent the rod from twisting or loosening;

[0065] S4, Anchor grouting stage: Prepare cement slurry and water glass mixture in strict accordance with the ratio, stir evenly and then pump; immediately after pulling out the steel casing 15, grouting is carried out, and grouting is carried out in batches and intermittently in the order of A→B→C pipes, with the pressure increasing in sequence. Grouting is stopped each time until the cement slurry emerges from the ground. The first grouting is mixed with an accelerator to block water, and the subsequent grouting is used to fill the grout and expand the head to ensure that the grouting is dense and improve the anchor pull-out resistance;

[0066] S5, Anchor bending and cleaning stage: After grouting is completed, the mud around the hole is cleaned, and the anchor body is bent using a small electric hydraulic bending machine. The bending position is accurately controlled according to the calculated elevation and the on-site control point. The error is adjusted by tying the anchor body with a short pad, etc., to ensure that the anchor length in the base plate meets the design and the temporary support horizontal elevation is controlled within ±±5mm;

[0067] S6, cushion construction stage: clean the earth around the anchor rod, install the cup-shaped template, pour the cushion concrete 7 and vibrate it to make it dense, make a 5% slope before the initial setting, remove the formwork and level it after the initial setting to form a cup-shaped groove 1, creating conditions for waterproofing construction;

[0068] S7, Waterproofing Construction Phase: First, clean the base layer 3, apply a 1.5mm thick cement-based waterproof coating to the groove and the surrounding 100mm area; after drying, fill the cup mouth with C20 micro-expansive concrete 2 and finish it; then apply a 1.5mm thick layer of polyurethane waterproof coating 10, lay a 4mm thick SBS modified asphalt waterproof membrane, overlap the membrane in accordance with the regulations, and inject waterproof asphalt caulking paste at the joints. Finally, weld a 350mm×250mm waterstop steel plate 17 600mm above the anchor rod to construct a multi-layer waterproof system;

[0069] S8, protective layer construction stage: After the waterproof joint caulking paste is poured, immediately pour 40-50mm thick C20 fine stone concrete as a protective layer to enhance waterproof durability.

[0070] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An anti-floating anchor grouting pressure intelligent control grouting machine, characterized in that: include: A waterproof integrated component, comprising a cup-shaped groove (1), micro-expansive concrete (2) and a multi-layer waterproof layer component, wherein the cup-shaped groove (1) is arranged on a base layer (3); A multi-tube segmented grouting assembly, comprising three anchor rod bodies, an A grouting pipe (4), a B grouting pipe (5), and a C grouting pipe (6), wherein the A grouting pipe (4), the B grouting pipe (5), and the C grouting pipe (6) are tied to the anchor rod body; An intelligent pressure regulating component comprises an intelligent control unit and a grouting component.

2. The anti-floating anchor grouting pressure intelligent control grouting machine according to claim 1, characterized in that: A cushion layer of concrete (7) is provided on the cup-shaped groove (1), and the micro-expansive concrete (2) is arranged on the cushion layer of concrete (7).

3. The anti-floating anchor grouting pressure intelligent control grouting machine according to claim 2, characterized in that: The multi-layer waterproof layer assembly comprises a cement-based waterproof coating layer (8), an SBS modified asphalt waterproof coiled material layer (9), and a polyurethane waterproof coating layer (10); the cement-based waterproof coating layer (8) is arranged between the micro-expansion concrete (2) and the cushion concrete (7); the SBS modified asphalt waterproof coiled material layer (9) is arranged on the micro-expansion concrete (2); and the polyurethane waterproof coating layer (10) is arranged between the SBS modified asphalt waterproof coiled material layer (9) and the micro-expansion concrete (2).

4. The anti-floating anchor grouting pressure intelligent control grouting machine according to claim 3, characterized in that: The anchor rod body is composed of a plurality of steel bars (11) and a plurality of straight threaded sleeves (12). Both ends of the plurality of steel bars (11) are provided with threaded portions (13), and the threaded portions (13) on adjacent steel bars (11) are threadedly connected to both ends of the straight threaded sleeves (12).

5. The grouting machine for intelligently controlling grouting pressure of anti-floating anchor rods according to claim 4 is characterized in that: The base layer (3) is provided with an anchor hole (14), a steel casing (15) is provided in the anchor hole (14), and the three anchor rod bodies, the A grouting pipe (4), the B grouting pipe (5) and the C grouting pipe (6) are placed in the steel casing (15).

6. The anti-floating anchor grouting pressure intelligent control grouting machine according to claim 1, characterized in that: The A grouting pipe (4) is the full length of the anchor rod, the B grouting pipe (5) is 2 / 3 of the length of the anchor rod, and the C grouting pipe (6) is 1 / 3 of the length of the anchor rod.

7. The grouting machine for intelligently controlling grouting pressure of anti-floating anchor rods according to claim 5, characterized in that: An expansion waterstop strip (16) is provided on the cement-based waterproof coating layer (8), and a waterstop steel plate (17) is provided on the steel bar (11).

8. The grouting machine for intelligently controlling grouting pressure of anti-floating anchor rods according to claim 7, characterized in that: The grouting assembly comprises a grouting pump (18), a connecting pipe (19), three branch pipes (20) and a control valve (21); the grouting pump (18) is connected to one end of the connecting pipe (19); the other end of the connecting pipe (19) is connected to the three branch pipes (20) via a four-way connection; and the control valve (21) is respectively installed on the three branch pipes (20).

9. The anti-floating anchor grouting pressure intelligent control grouting machine according to claim 8, characterized in that: The intelligent control unit comprises a PLC controller (22), three pressure sensors (23), a plurality of liquid level sensors (24), an inclination sensor (25), a temperature sensor (26) and a flow sensor (27); the PLC controller (22) is installed on a grouting pump (18); the three pressure sensors (23) are installed on a grouting pipe; the plurality of liquid level sensors (24) are respectively installed on an SBS modified asphalt waterproofing membrane layer (9), one end of a steel casing (15) and an expansion water stop strip (16); the inclination sensor (25) is installed on one end of the steel pipe; the temperature sensor (26) and the flow sensor (27) are installed on a connecting pipe (19); and the PLC controller (22) is electrically connected to the grouting pump (18), the control valve (21), the three pressure sensors (23), the plurality of liquid level sensors (24), the inclination sensor (25), the temperature sensor (26) and the flow sensor (27).

10. A process flow of an intelligent grouting machine for controlling grouting pressure of an anti-floating anchor bolt, characterized in that: include: S1, construction preparation stage; Material preparation: concrete, anchor body, concrete strength testing and anchor body mechanical property re-inspection; Technical preparation: Surveyors establish construction plane and elevation control network based on control points; Labor preparation: Experienced workers who have worked on similar civil engineering projects will be selected to join the project, and the project department will have full-time labor management personnel; Equipment preparation: Select anchor drilling machines, grouting machines and other equipment according to construction requirements; S2, positioning and drilling stage: Use CAD to export coordinates, and accurately measure and place anchor hole positions using a theodolite or total station; stabilize the drilling rig with wooden beams, and calibrate the verticality of the drill rod to ≤1% using a compass or hanging line method; first drill a 50-100mm positioning hole, and then use a steel casing (15) one size larger than the designed hole diameter to follow up the hole, and after reaching the rock penetration position, use an appropriate drill rod to drill to the designed depth; S3, rod body production and lowering stage: according to the design, three C32 fine-rolled threaded steel bars are welded into a bundle, and grouting pipe A (4) (full length), grouting pipe B (5) (2 / 3 length), and grouting pipe C (1 / 3 length) are tied together, and the ends are sealed; the rod body is lowered by a crane or a tower crane, and before lowering, the horizontal anchor body is welded at the hole to control the length of the anchor into the base plate; S4, anchor grouting stage: prepare cement slurry and water glass mixed slurry strictly according to the ratio, stir evenly and then pump; immediately after pulling out the steel casing (15), grouting is carried out in batches and intermittently in the order of A→B→C pipes, with the pressure increasing in sequence, and grouting is stopped each time until the cement slurry emerges from the ground. The first grouting is mixed with an accelerator to block water, and the subsequent grouting is used to fill the grout and expand the head; S5, Anchor bending and cleaning stage: After grouting is completed, the mud around the hole is cleaned, and the anchor body is bent using a small electric hydraulic bending machine. The bending position is accurately controlled according to the calculated elevation and the on-site control point, and the error is adjusted by padding the short anchor body. S6, cushion construction stage: clean the earth around the anchor rod, install the cup-shaped template, pour the cushion concrete (7) and vibrate it to make it dense, make a 5% slope before the initial setting, remove the template and level it after the initial setting; S7, waterproof construction stage: first clean the base layer (3), apply 1.5mm thick cement-based waterproof coating to the groove and the surrounding 100mm range; after drying, fill the cup mouth with C20 micro-expansive concrete (2) and finish it; then apply 1.5mm thick polyurethane waterproof coating layer (10), lay 4mm thick SBS modified asphalt waterproof membrane, overlap the membrane in accordance with the regulations, and inject waterproof asphalt caulking paste at the nodes, and finally weld 350mm××250mm waterstop steel plate (17) 600mm above the anchor rod to build a multi-layer waterproof system; S8, protective layer construction stage: After the waterproof joint caulking paste is poured, immediately pour 40-50mm thick C20 fine stone concrete as a protective layer.

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