Isomer high-pressure jet grouting reinforcement equipment and method

Abstract

The application discloses a special-shaped high-pressure rotary jet reinforcement equipment, which comprises a supporting table, an expansion support, a threaded rotating shaft, a fixed connecting piece, a supporting arm, an outer threaded special-shaped shell, a spiral rotating machine and a high-pressure rotary jet drill bit. The expansion support is installed on the supporting table, the supporting table is located on the two sides or the same side of the upper river channel, the left and right ends of the threaded rotating shaft are rotationally connected with the expansion support, one end of the fixed connecting piece is boltedly connected with the threaded rotating shaft, the other end of the fixed connecting piece is connected with the supporting arm, the supporting arm is fixedly connected with the outer threaded special-shaped shell, the spiral rotating machine is locally boltedly connected with the outer threaded special-shaped shell, a grouting pipe, a slurry conveying pipe and a water injection pipe are internally arranged in the outer threaded special-shaped shell along the same direction, and the high-pressure rotary jet drill bit is rotationally connected with the end of the outer threaded special-shaped shell. A reinforcement method is also provided. The application can not only realize the isolation of the lower tunnel and the upper river water seepage path, reduce the double influence of the soil deformation on the tunnel and the riverbed, but also has the advantages of convenient operation, low cost and short construction period.

Description

Technical Field

[0001] The present invention belongs to the field of geotechnical engineering technology, and relates to a special-shaped body high-pressure rotary grouting reinforcement equipment and method, which is mainly suitable for special-shaped body high-pressure rotary grouting reinforcement of soil between an underpass tunnel and an upper river channel. Background Art

[0002] The presence of a river channel above a tunnel is a common engineering phenomenon. Due to changes in soil permeability between the tunnel and the riverbed, soil moisture content often increases and soil strength decreases, leading to water seepage accidents within the tunnel, threatening the safe operation of the tunnel below. In severe cases, this can cause huge economic losses and negative social impacts. To prevent construction disturbances from causing riverbed collapse or water gushing, most projects use soil grouting reinforcement methods to isolate the hydraulic connection between the river and the tunnel. Conventional jet grouting reinforcement equipment has the following shortcomings: 1) Existing reinforcement equipment can only adopt linear reinforcement in horizontal, vertical, and diagonal directions, and cannot form special-shaped reinforcement structures compatible with the shape of the river channel above the subway tunnel; 2) Horizontal soil reinforcement must be carried out in the excavation pit, which is complex, costly, and time-consuming; 3) Linear reinforcement cannot form an effective water barrier, and water seepage is easily caused at the joints, resulting in poor reinforcement results. Summary of the Invention

[0003] In order to overcome the shortcomings of existing reinforcement equipment and methods that are unable to achieve special-shaped reinforcement of the soil between the lower tunnel and the upper river channel, and unable to completely isolate the seepage channel between the upper river water and the lower tunnel, the present invention provides a special-shaped high-pressure rotary grouting reinforcement equipment and method, which can effectively overcome the shortcomings of conventional reinforcement equipment. The present invention can not only achieve the isolation of the seepage path between the lower tunnel and the upper river water, reduce the dual impact of soil deformation on the tunnel and the riverbed, but also is easy to operate, low in cost and short in construction period.

[0004] The technical solution adopted by the present invention to solve its technical problem is:

[0005] A high-pressure rotary grouting reinforcement equipment for a special-shaped body, the high-pressure rotary grouting reinforcement equipment for a special-shaped body comprising a support platform, an expansion bracket, a threaded shaft, a fixed connection, a support arm, an externally threaded special-shaped shell, a spiral turning machine and a high-pressure rotary grouting drill bit, the expansion bracket being installed on the support platform, the support platform being located on both sides or on the same side of the upper river channel, the left and right ends of the threaded shaft being rotatably connected to the expansion bracket, one end of the fixed connection piece being bolted to the threaded shaft, the other end of the fixed connection piece being connected to the support arm, the support arm being fixedly connected to the externally threaded special-shaped shell, the spiral turning machine being partially bolted to the externally threaded special-shaped shell, the grouting pipe, the mud delivery pipe and the water injection pipe being built into the externally threaded special-shaped shell along the same direction, the high-pressure rotary grouting drill bit being rotatably connected to the end head of the externally threaded special-shaped shell.

[0006] Furthermore, the spiral turning machine is installed on a movable walker, and the walker is installed on a walking track. The walking track is parallel to the direction of water flow in the upper river channel, and the walker is connected to a walking control component for controlling the movement of the spiral turning machine on the walking track.

[0007] The threaded shaft is connected to a threaded shaft rotation control assembly for controlling the threaded shaft rotation. The threaded shaft rotation causes the support arm to move along the threaded shaft.

[0008] The spiral rotating machine is connected to an inner spiral rotation control assembly for controlling the self-rotation of the spiral rotating machine. The self-rotation of the spiral rotating machine causes the drilling of the external threaded special-shaped shell to advance.

[0009] The end of the high-pressure rotary jet drill bit is provided with a connecting hole for connecting the grouting pipe and the water injection pipe. The side of the high-pressure rotary jet drill bit is provided with a hole outlet groove. Grouting nozzles and water injection nozzles are distributed on the hole outlet groove. The grouting nozzle is connected to the grouting pipe, the water injection nozzle is connected to the water injection pipe, and the hole outlet groove is connected to the end of the mud conveying pipe.

[0010] Two support platforms are provided on both sides of the river channel or on the same side.

[0011] In the externally threaded special-shaped shell, the mud conveying pipe is located in the middle, and the grouting pipe and the water injection pipe are respectively located on both sides of the mud conveying pipe.

[0012] A high-pressure rotary grouting reinforcement method for a special-shaped body, the rotary grouting reinforcement method comprising the following steps:

[0013] Step 1: Place support platforms on both sides of the upper river channel or on the same side and level them. Determine the placement of the walking track based on the projected position of the reinforced soil on the ground, and place it parallel to the direction of the river flow.

[0014] Step 2: Place the threaded shaft vertically on the ground, then connect one end of the fixed connector to the threaded shaft through the internal thread, and connect the other end of the fixed connector to the support arm;

[0015] Step 3: Connect the grouting pipe, mud delivery pipe and water injection pipe into the outer spiral special-shaped shell, then screw them into the spiral turning machine through a spiral manner, and install the high-pressure jet drilling bit at the end of the outer spiral special-shaped shell;

[0016] Step 4: Place the interconnected expansion brackets on the support platform, connect the two ends of the spiral shaft to the expansion brackets respectively, connect the outer spiral shaped shell to the fixed connector through the support arm, and make the outer spiral shaped shell and the support arm in the same vertical plane;

[0017] Step 5: Install the installed spiral turning machine on the walking track through the walking device;

[0018] Step 6: Install the detection and control system consisting of a detection module and a control module. The detection module's position sensor is installed at the end of the high-pressure jet grouting drill bit. Together with the fixed sensor on the ground, it forms the detection module, which can obtain the specific position of the jet grouting drill bit in real time. The control module's controller is installed at the two bolted connections between the threaded shaft and the support arm, and the screw turning machine and the externally threaded special-shaped shell. The detection module and control module are connected to the computer terminal via circuit threads.

[0019] Step 7: Turn on the control module, control the rotation of the threaded shaft to move the fixed connector to the starting position of the reinforcement structure, and control the screw rotating machine to move synchronously on the walking track while the fixed connector moves. Turn on the detection module and record the starting position of the high-pressure jet grouting drill head reinforcement structure.

[0020] Step 8: Construct the first special-shaped reinforcement body, open the water injection pipe, and simultaneously start the spiral rotating machine and the high-pressure rotary jet drill bit. The external threaded special-shaped shell is driven by the self-rotation in the spiral rotating machine to drill into the ground. The mixture of slag and clean water after drilling is transported to the mud delivery pipe through the hole outlet groove and then discharged from the equipment. When the detection module shows that the high-pressure rotary jet drill bit has drilled to the designed position, close the water injection pipe and the mud delivery pipe, open the grouting pipe, and simultaneously start the reverse rotation of the inner ring of the spiral rotating machine. Slowly pull out the external threaded special-shaped shell, and at the same time spray a mixture of high-pressure air and slurry through the grouting pipe to form the first grouting special-shaped body of the reinforced structure.

[0021] Step 9: Control the threaded shaft to rotate to move the fixed connector, and at the same time drive the thread to rotate and move synchronously on the walking track until it reaches the designed position of the second reinforcement body, and then repeat step 7 to complete the construction of the second reinforcement body;

[0022] Step 10: The construction of the entire special-shaped reinforcement body is completed through steps 7 and 8, and different special-shaped reinforcement strips are required to have mutual interlocking areas.

[0023] Furthermore, in step 4, the interconnected expansion brackets are placed on the support table, the parts assembled in step 2 are connected to the expansion brackets through the spiral shaft, the parts connected in step 3 are connected to the fixed connecting parts through the support arm, and the outer spiral special-shaped shell and the support arm are in the same vertical plane, thereby realizing the installation of the special-shaped high-pressure rotary spraying equipment.

[0024] Furthermore, in step 5, the detection module is a position sensor installed at the end of the rotary jet drill bit, which together with the sensor fixed on the ground constitutes a detection module, which can obtain the specific position of the rotary jet drill bit in real time; the control module can control the thread rotation; the controller controls the rotation of the thread shaft so that the support arm can move along the thread shaft, and controls the rotation of the internal thread of the spiral turning machine so that the external threaded special-shaped shell can be drilled forward; the detection module and the control module are connected to the computer terminal through the circuit thread, and the construction conditions of the special-shaped high-pressure rotary jet reinforcement equipment are obtained in real time through the detection module. After meeting the engineering design requirements, the bolt working process is terminated according to the control module.

[0025] The beneficial effects of the present invention are mainly manifested in: (1) a special-shaped reinforcement structure compatible with the shape of the upper river channel can be realized; (2) there is no need to construct a foundation pit working well separately, and no underground construction space is occupied. The construction process is simple, the operation is convenient, the cost is low, and the construction period is short; (3) the special-shaped reinforcement body can form an effective water barrier with good anti-seepage effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the high-pressure rotary jet reinforcement equipment for special-shaped bodies.

[0027] Figure 2 It is the connection arrangement diagram of the external threaded special-shaped shell and the internal pipe.

[0028] Figure 3 This is a connection diagram between the high-pressure jet jet drill bit and the internal pipeline.

[0029] Figure 4 This is a diagram of the connection between the screw turning machine and the external threaded special-shaped shell.

[0030] Among them, 1. Support platform; 2. Expansion bracket; 3. Threaded shaft; 4. Fixed connector; 5. Support arm; 6. Externally threaded special-shaped shell; 7. Screw turning machine; 8. Special-shaped reinforcement body; 9. Lower tunnel; 10. Upper river channel; 11. Grouting pipe; 12. Mud conveying pipe; 13. Water injection pipe; 14. Exit groove; 15. High-pressure rotary jet drill bit; 16. Walker; 17. Water injection nozzle; 18. Grouting nozzle, 19. Walking track. DETAILED DESCRIPTION

[0031] The present invention will be further described below with reference to the accompanying drawings.

[0032] Reference Figures 1 to 4, a special-shaped high-pressure rotary grouting reinforcement equipment, including a support platform 1, an expansion bracket 2, a threaded shaft 3, a fixed connector 4, a support arm 5, an externally threaded special-shaped shell 6, a spiral rotating machine 7, a special-shaped reinforcement body 8, a lower tunnel 9, an upper river channel 10, a grouting pipe 11, a mud delivery pipe 12, a water injection pipe 13, an outlet groove 14, a high-pressure rotary grouting drill bit 15, a walker 16, a water injection nozzle 17, a grouting nozzle 18, and a walking track 19. The expansion bracket 2 is installed on the support platform 1, and both ends of the threaded shaft 3 are rotatably connected to the expansion bracket 2. The fixed connector 4 and the threaded shaft 3 are bolted. The support arm 5 is fixedly connected to the externally threaded special-shaped shell 6. The spiral rotating machine 7 and the externally threaded special-shaped shell 6 are partially bolted. The grouting pipe 11, the mud delivery pipe 12 and the water injection pipe 13 are connected to the externally threaded special-shaped shell 6 along the same direction, and the high-pressure rotary grouting drill bit 15 is rotatably connected to the end of the externally threaded special-shaped shell 6.

[0033] Each of the special-shaped reinforcement bodies 8 is interlocked, the tunnel 9 below is consistent with the direction of the special-shaped reinforcement body 8, and the special-shaped reinforcement body 8 and the river channel 10 above are in a vertical spatial relationship.

[0034] Furthermore, the spiral turning machine 7 is installed on a movable walker 16, and the movable walker 16 is installed on a walking track 19. The walking track 19 is parallel to the direction of water flow in the river above. The walker 16 is connected to a walking control component for controlling the movement of the spiral turning machine on the walking track.

[0035] The threaded shaft 3 is connected to a threaded shaft rotation control assembly for controlling the rotation of the threaded shaft 3 . The threaded shaft 3 rotates so that the support arm 5 moves along the threaded shaft.

[0036] The spiral rotating machine 7 is connected to an internal spiral rotation control component for controlling the self-rotation of the spiral rotating machine 7. The self-rotation of the spiral rotating machine 7 causes the external threaded special-shaped shell 6 to drill and advance.

[0037] The end of the high-pressure rotary jet drill bit 15 is provided with a connecting hole for connecting the grouting pipe 11 and the water injection pipe 13. The side of the rotary jet drill bit 15 is provided with a hole outlet groove 14, and a grouting nozzle 18 and a water injection nozzle 17 are distributed on the hole outlet groove 14. The grouting nozzle 18 is connected to the grouting pipe 11, the water injection nozzle 17 is connected to the water injection pipe 13, and the hole outlet groove 14 is connected to the end of the mud conveying pipe 12.

[0038] Two support platforms 1 are provided on both sides or on the same side of the upper river channel.

[0039] In the externally threaded special-shaped shell 6 , the mud conveying pipe 12 is located in the middle, and the grouting pipe 11 and the water injection pipe 13 are respectively located on both sides of the mud conveying pipe 12 .

[0040] A high-pressure rotary grouting reinforcement method for a special-shaped body, the rotary grouting reinforcement method comprising the following steps:

[0041] Step 1: Place support platforms on both sides of the upper river channel or on the same side and level them. Determine the placement of the walking track based on the projected position of the reinforced soil on the ground, and place it parallel to the direction of the river flow.

[0042] Step 2: Place the threaded shaft vertically on the ground, then connect one end of the fixed connector to the threaded shaft through the internal thread, and connect the other end of the fixed connector to the support arm;

[0043] Step 3: Connect the grouting pipe, mud delivery pipe and water injection pipe into the outer spiral special-shaped shell, then screw them into the spiral turning machine through a spiral manner, and install the high-pressure jet drilling bit at the end of the outer spiral special-shaped shell;

[0044] Step 4: Place the interconnected expansion brackets on the support platform, connect the two ends of the spiral shaft to the expansion brackets respectively, connect the outer spiral shaped shell to the fixed connector through the support arm, and make the outer spiral shaped shell and the support arm in the same vertical plane;

[0045] Step 5: Install the installed spiral turning machine on the walking track through the walking device;

[0046] Step 6: Install the detection and control system consisting of a detection module and a control module. The detection module's position sensor is installed at the end of the high-pressure jet grouting drill bit. Together with the ground-mounted sensor, it forms the detection module, which can obtain the specific position of the jet grouting drill bit in real time. The control module's controller is installed at the bolted connection points between the threaded shaft 3 and the support arm 5, and between the screw turning machine 7 and the externally threaded profiled shell 6. The detection module and control module are connected to the computer terminal via circuit threads.

[0047] Step 7: Turn on the control module, control the rotation of the threaded shaft to move the fixed connector to the starting position of the reinforcement structure, and control the screw rotating machine to move synchronously on the walking track while the fixed connector moves. Turn on the detection module and record the starting position of the high-pressure jet grouting drill head reinforcement structure.

[0048] Step 8: Construct the first special-shaped reinforcement body, open the water injection pipe, and simultaneously start the spiral rotating machine and the high-pressure rotary jet drill bit. The external threaded special-shaped shell is driven by the self-rotation in the spiral rotating machine to drill into the ground. The mixture of slag and clean water after drilling is transported to the mud delivery pipe through the hole outlet groove and then discharged from the equipment. When the detection module shows that the high-pressure rotary jet drill bit has drilled to the designed position, close the water injection pipe and the mud delivery pipe, open the grouting pipe, and simultaneously start the reverse rotation of the inner ring of the spiral rotating machine. Slowly pull out the external threaded special-shaped shell, and at the same time spray a mixture of high-pressure air and slurry through the grouting pipe to form the first grouting special-shaped body of the reinforced structure.

[0049] Step 9: Control the threaded shaft to rotate to move the fixed connector, and at the same time drive the screw rotating machine to move synchronously on the walking track until it reaches the designed position of the second reinforcement body, and then repeat step 7 to complete the construction of the second reinforcement body;

[0050] Step 10: The construction of the entire special-shaped reinforcement body is completed through steps 7 and 8, and different special-shaped reinforcement strips are required to have mutual interlocking areas.

[0051] A subway project in a certain city plans to use an underground shield tunneling method to vertically penetrate a river channel. The tunnel top is buried at a depth of approximately 20 meters, and the deepest part of the river channel is approximately 8 meters from the surface. To prevent the adverse effects of river water seepage into the tunnel after the shield tunneling and normal subway operation, the special-shaped high-pressure jet grouting reinforcement equipment and method provided by the present invention are being used to reinforce the soil between the tunnel below and the riverbed above.

[0052] In this embodiment, the minimum distance between the tunnel top and the riverbed is 12 meters. The tunnel has an outer diameter of 6.2 meters, an inner diameter of 5.5 meters, and a ring width of 1.2 meters. According to the geological survey report, the soil layers beneath the riverbed are silty clay, clay, and sandy silt, with thicknesses of 6 meters, 5 meters, and 10 meters, respectively. To achieve the best reinforcement effect, the special-shaped reinforcement body is required to be perpendicular to the riverbed above and the tunnel below.

[0053] The embodiments of the present invention are:

[0054] (1) Place the support platform and level it. Clean and level the ground on both sides of the river channel, lay the roadbed subgrade, and place two symmetrical support platforms 1 on each side of the river channel. Adjust the heights of the four support platforms 1 so that they are at the same level.

[0055] (2) Assemble the fixed connector 4 and connected parts. Place the threaded shaft 3 vertically on the ground, then connect the fixed connector 4 to the threaded shaft 3 through the internal thread, and connect the other hole of the fixed connector 4 to the support arm 5.

[0056] (3) The grouting pipe 11, the slurry delivery pipe 12 and the water injection pipe 13 are connected to the outer spiral profiled shell 6, and then screwed into the spiral turning machine 7 by means of a spiral. The jet grouting drill bit 15 is installed at the end of the outer spiral profiled shell 6.

[0057] (4) Place the interconnected expansion brackets 2 on the support platform 1, connect the parts assembled in step (2) to the expansion bracket 2 through the spiral shaft 3, connect the parts connected in step (3) to the fixed connector 4 through the support arm 5, and make the outer spiral special-shaped shell and the support arm 5 in the same vertical plane, thereby realizing the installation of the special-shaped high-pressure rotary spraying equipment.

[0058] (5) Install the installed screw rotating machine 7 on the walking track 19 through the walking device 16;

[0059] (6) Embedded detection and control system. The detection and control system is divided into a detection module and a control module. The detection module is a position sensor installed at the end of the jet grouting drill bit. Together with the sensor fixed on the ground, it forms a detection module that can obtain the specific position of the jet grouting drill bit in real time. The control module is a controller for the two bolt connection parts of the threaded shaft 3-support arm 5 and the spiral turning machine 7-external threaded special-shaped shell 6, which can control the thread rotation. The controller controls the self-rotation of the threaded shaft 3 to enable the support arm 5 to move along the threaded shaft 3, and controls the self-rotation of the internal thread of the spiral turning machine 7 to enable the external threaded special-shaped shell 6 to drill forward. The detection module and the control module are connected to the computer terminal through a circuit thread. The construction conditions of the special-shaped high-pressure jet grouting reinforcement equipment are obtained in real time through the detection module. After meeting the engineering design requirements, the bolt working process is terminated according to the control module.

[0060] (7) The special-shaped high-pressure jet grouting reinforcement equipment is in place. The control module is turned on to control the rotation of the threaded shaft 3 to move the fixed connector 4 to the starting position. While the fixed connector 4 moves, the spiral turning machine 7 is controlled to move synchronously on the running track 19. The detection module is turned on and the starting position of the jet grouting drill head 15 is recorded.

[0061] (8) Construction of the first special-shaped reinforcement body. Open the water injection pipe 13, and at the same time start the spiral rotating machine 7 and the rotary jet drill 15. The external threaded special-shaped shell 6 moves underground under the drive of the self-rotation in the spiral rotating machine 7. The mixture of slag and clean water after drilling is transported to the mud conveying pipe 12 through the hole outlet groove 14, and then discharged from the equipment. When the detection module shows that the rotary jet drill 15 has drilled to the designed position, close the water injection pipe 13 and the mud conveying pipe 12, open the grouting pipe 11, and at the same time start the inner spiral of the spiral rotating machine 7 to rotate in the opposite direction, slowly pull out the external threaded special-shaped shell 6, and at the same time, spray a mixture of high-pressure air and slurry through the grouting pipe 11 to form the first grouting special-shaped body of the reinforced structure.

[0062] (9) Move the position of the special-shaped high-pressure rotary grouting equipment and repeat step (7) to complete the construction of the second special-shaped grouting reinforcement body. Control the rotation of the threaded shaft 3 to move the fixed connection member 4, and at the same time drive the threaded rotation 7 to move synchronously on the walking track 19 until it reaches the construction position of the second reinforcement body, and then repeat step (7) to complete the construction of the second reinforcement body.

[0063] (10) The construction of the entire special-shaped reinforcement body can be achieved through steps (7) and (8), and different special-shaped reinforcement strips are required to have areas that interlock with each other.

[0064] The embodiments of this specification are merely examples of implementations of the invention and are provided for illustrative purposes only. The scope of protection of the present invention should not be considered limited to the specific embodiments described in these embodiments. The scope of protection of the present invention also extends to equivalent technical means that can be conceived by a person of ordinary skill in the art based on the invention.

Claims

1. A reinforcement method for special-shaped high-pressure rotary grouting reinforcement equipment, characterized in that: The special-shaped high-pressure rotary grouting reinforcement equipment includes a support platform, an expansion bracket, a threaded shaft, a fixed connection, a support arm, an externally threaded special-shaped shell, a spiral rotating machine and a high-pressure rotary grouting drill bit. The expansion bracket is installed on the support platform. The support platform is located on both sides or on the same side of the upper river channel. The left and right ends of the threaded shaft are rotatably connected to the expansion bracket. One end of the fixed connection piece is bolted to the threaded shaft, and the other end of the fixed connection piece is connected to the support arm. The support arm is fixedly connected to the externally threaded special-shaped shell, and the spiral rotating machine is partially bolted to the externally threaded special-shaped shell. The grouting pipe, mud delivery pipe and water injection pipe are built into the externally threaded special-shaped shell along the same direction. The high-pressure rotary grouting drill bit is rotatably connected to the end head of the externally threaded special-shaped shell. The reinforcement method comprises the following steps: Step 1: Place support platforms on both sides of the upper river channel or on the same side and level them. Determine the placement of the walking track based on the projected position of the reinforced soil on the ground, and place it parallel to the direction of the river flow. Step 2: Place the threaded shaft vertically on the ground, then connect one end of the fixed connector to the threaded shaft through the internal thread, and connect the other end of the fixed connector to the support arm; Step 3: Connect the grouting pipe, mud delivery pipe and water injection pipe into the external threaded special-shaped shell, then screw them into the spiral turning machine by spiral means, and install the high-pressure jet drilling bit at the end of the external threaded special-shaped shell; Step 4: Place the interconnected expansion brackets on the support platform, connect the two ends of the threaded shaft to the expansion brackets respectively, connect the external threaded special-shaped shell to the fixed connector through the support arm, and make the external threaded special-shaped shell and the support arm in the same vertical plane; Step 5: Install the installed spiral turning machine on the walking track through the walking device; Step 6: Install a detection and control system consisting of a detection module and a control module. Install the position sensor of the detection module at the end of the high-pressure jet grouting drill bit. Together with the fixed sensor on the ground, the detection module can obtain the specific position of the jet grouting drill bit in real time. Install the controller of the control module at the two bolt connection parts between the threaded shaft and the support arm and the screw turning machine and the external threaded special-shaped shell respectively. The detection module and the control module are connected to the computer terminal through circuit threads. Step 7: Turn on the control module, control the rotation of the threaded shaft to move the fixed connector to the starting position of the reinforcement structure, and control the screw rotating machine to move synchronously on the walking track while the fixed connector moves. Turn on the detection module and record the starting position of the high-pressure jet grouting drill head reinforcement structure. Step 8: Construct the first special-shaped reinforcement body, open the water injection pipe, and simultaneously start the spiral rotating machine and the high-pressure rotary jet drill bit. The external threaded special-shaped shell is driven by the self-rotation in the spiral rotating machine to drill into the ground. The mixture of slag and clean water after drilling is transported to the mud delivery pipe through the hole outlet groove and then discharged from the equipment. When the detection module shows that the high-pressure rotary jet drill bit has drilled to the designed position, close the water injection pipe and the mud delivery pipe, open the grouting pipe, and simultaneously start the reverse rotation of the inner ring of the spiral rotating machine. Slowly pull out the external threaded special-shaped shell, and at the same time spray a mixture of high-pressure air and slurry through the grouting pipe to form the first grouting special-shaped body of the reinforced structure. Step 9: Control the threaded shaft to rotate to move the fixed connector, and at the same time drive the screw rotating machine to move synchronously on the walking track until it reaches the designed position of the second reinforcement body, and then repeat step 7 to complete the construction of the second reinforcement body; Step 10: The construction of the entire special-shaped reinforcement body is completed through steps 7 and 8, and different special-shaped reinforcement strips are required to have mutual interlocking areas.

2. The reinforcement method of the special-shaped body high-pressure rotary grouting reinforcement equipment according to claim 1, characterized in that: The spiral turning machine is installed on a walker, and the walker is movably installed on a walking track. The walking track is parallel to the flow direction of the river channel above. The walker is connected to a walking control component for controlling the movement of the spiral turning machine on the walking track.

3. The reinforcement method of the special-shaped body high-pressure rotary grouting reinforcement equipment according to claim 1 or 2, characterized in that: The threaded shaft is connected to a threaded shaft rotation control assembly for controlling the threaded shaft rotation. The threaded shaft rotation causes the support arm to move along the threaded shaft.

4. The reinforcement method of the special-shaped body high-pressure rotary grouting reinforcement equipment according to claim 1 or 2, characterized in that: The spiral turning machine is connected to a spiral turning control assembly for controlling the internal thread self-rotation of the spiral turning machine. The spiral turning machine self-rotates to advance the drilling of the external thread special-shaped shell.

5. The reinforcement method of the special-shaped body high-pressure rotary grouting reinforcement equipment according to claim 1 or 2, characterized in that: The end of the rotary jet drill bit is provided with a connecting hole for connecting the grouting pipe and the water injection pipe. The side of the rotary jet drill bit is provided with a hole outlet groove. Grouting nozzles and water injection nozzles are distributed on the hole outlet groove. The grouting nozzle is connected to the grouting pipe, the water injection nozzle is connected to the water injection pipe, and the hole outlet groove is connected to the end of the mud conveying pipe.

6. The reinforcement method of the special-shaped body high-pressure rotary grouting reinforcement equipment according to claim 1 or 2, characterized in that: Two support platforms are arranged on both sides or on the same side of the upper river channel.

7. The reinforcement method of the special-shaped body high-pressure rotary grouting reinforcement equipment according to claim 1 or 2, characterized in that: In the externally threaded special-shaped shell, the mud conveying pipe is located in the middle, and the grouting pipe and the water injection pipe are respectively located on both sides of the mud conveying pipe.

8. The reinforcement method of special-shaped body high-pressure rotary grouting reinforcement equipment according to claim 1, characterized in that: In step 4, the interconnected expansion brackets are placed on the support table, the parts assembled in step 2 are connected to the expansion brackets through the threaded shaft, the parts connected in step 3 are connected to the fixed connector through the support arm, and the external threaded special-shaped shell and the support arm are in the same vertical plane, thereby realizing the installation of the special-shaped high-pressure rotary spraying equipment.

9. The reinforcement method of special-shaped body high-pressure rotary grouting reinforcement equipment according to claim 1, characterized in that: In step 5, the detection module is a position sensor installed at the end of the rotary jet drill bit, which together with the sensor fixed on the ground constitutes a detection module, which can obtain the specific position of the rotary jet drill bit in real time; the control module can control the thread rotation; the controller controls the rotation of the thread shaft so that the support arm can move along the thread shaft, and controls the rotation of the internal thread of the spiral turning machine so that the external threaded special-shaped shell can be drilled forward; the detection module and the control module are connected to the computer terminal through the circuit thread, and the construction conditions of the special-shaped high-pressure rotary jet reinforcement equipment are obtained in real time through the detection module. After meeting the engineering design requirements, the bolt working process is terminated according to the control module.

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