Water jet trapezoidal special-shaped slide-resistant pile construction device and construction method thereof

Abstract

The invention discloses a water jet trapezoidal special-shaped slide-resistant pile construction device and a construction method thereof, and relates to the technical field of geotechnical engineering pile foundations. A water jet trapezoidal special-shaped slide-resistant pile construction device comprises a shell, a plurality of drill rods are vertically arranged in the shell at intervals, the drill rods rotate through drill rod rotating devices, a vertical high-pressure water pipeline, a horizontal high-pressure water pipeline and a grinding material channel are formed in each drill rod, and the tops of the vertical high-pressure water pipelines communicate with the grinding material channels; the bottom of the vertical high-pressure water pipeline is communicated with the vertical nozzle; the top of the grinding material channel communicates with the vertical high-pressure conveying assembly through a first conveying pipeline. The horizontal high-pressure water pipeline is communicated with the horizontal nozzle; and the horizontal high-pressure water pipeline is communicated with the horizontal high-pressure conveying assembly. The construction cost is effectively controlled, the construction process is simplified, the construction efficiency is improved, and a better machining choice is provided for drilling construction of the trapezoidal special-shaped anti-slide pile.

Description

Technical Field

[0001] The present invention relates to the technical field of geotechnical engineering pile foundations, and in particular to a water jet trapezoidal special-shaped anti-slip pile construction device and a construction method thereof. Background Art

[0002] China is characterized by frequent seismic activity, and the large overlap between mountainous areas in the southwest and strong earthquake zones makes these areas particularly susceptible to earthquake-related landslides, posing a significant threat to infrastructure and even lifeline projects along the route. Furthermore, because the western mountainous areas are prone to slopes, effective slope support measures are essential to mitigate the catastrophic consequences of potential earthquakes.

[0003] In various slope reinforcement projects, anti-slide piles are a common preferred support method due to their excellent anti-slide stability and high cost-effectiveness. Anti-slide piles are a commonly used slope protection and reinforcement structure. They primarily provide anti-slide stability by providing a pile body embedded in the sliding surface to resist soil slip. They are widely used in landslide control, slope stabilization, and mountain road and engineering construction. Anti-slide piles are typically made of reinforced concrete, with portions of the pile body embedded in stable bedrock or harder soil to fully utilize their anti-slide, shear resistance, and load-bearing capacity.

[0004] As a new type of slope reinforcement structure, trapezoidal-shaped piles strike a balance between anti-slip performance and construction economy. Their trapezoidal cross-section not only provides high shear strength and flexural stiffness, but also optimizes the soil contact area, effectively dissipating sliding forces and significantly improving the overall slope stability. Compared to traditional circular and trapezoidal anti-slip piles, trapezoidal-shaped piles are more adaptable when in contact with the soil, making them suitable for slope management in complex geological conditions, mountain highway support, and engineering foundation reinforcement.

[0005] Patent publication number CN221973416U discloses a high-pressure jet rotary cutting device for pile foundation drilling. This device, consisting of a support frame, rotating beam, drive rod, nozzle, and high-pressure water pipe, can rotary cut the outer edge of the pile foundation hole in the construction area, thereby forming a core column that can be completely removed. However, this device has limited adaptability for slope management in complex geological conditions, mountain road support, and engineering foundation reinforcement. Summary of the Invention

[0006] The purpose of the present invention is to provide a water jet trapezoidal special-shaped anti-slip pile construction device and a construction method thereof, so as to solve the problem that the existing jet rotary cutting device has poor adaptability to complex geological conditions.

[0007] The technical solution of the present invention for solving the above technical problems is as follows: a water jet trapezoidal special-shaped anti-slip pile construction device, comprising: a square bored pile hole forming method of an outer shell, a plurality of drill rod square bored pile hole forming methods are vertically spaced inside the square bored pile hole forming method of the outer shell, the drill rod square bored pile hole forming method is driven to rotate by a drill rod rotating device, a vertical high-pressure water pipeline square bored pile hole forming method, a horizontal high-pressure water pipeline square bored pile hole forming method and an abrasive channel square bored pile hole forming method are provided inside each of the drill rod square bored pile hole forming methods, the top of the vertical high-pressure water pipeline square bored pile hole forming method is connected to the abrasive channel square bored pile hole forming method, the bottom of the vertical high-pressure water pipeline square bored pile hole forming method is connected to the vertical nozzle square bored pile hole forming method; the top of the abrasive channel square bored pile hole forming method is connected to the vertical high-pressure conveying assembly square bored pile hole forming method through a first conveying pipeline;

[0008] The end of the horizontal high-pressure water pipeline square bored pile hole forming method is connected to the horizontal nozzle square bored pile hole forming method arranged at the side end of the shell square bored pile hole forming method; the top of the horizontal high-pressure water pipeline square bored pile hole forming method is connected to the horizontal high-pressure delivery assembly square bored pile hole forming method through a second delivery pipeline and a high-pressure water pump.

[0009] Furthermore, the horizontal high-pressure water pipeline square bored pile hole forming method includes a first horizontal pipeline and a second horizontal pipeline, and the horizontal high-pressure delivery assembly square bored pile hole forming method includes a first high-pressure delivery device square bored pile hole forming method and a second high-pressure delivery device square bored pile hole forming method;

[0010] The first high-pressure conveyor square bored pile hole forming method is connected to the first horizontal pipeline, the second high-pressure conveyor square bored pile hole forming method is connected to the second horizontal pipeline, and the horizontal nozzle square bored pile hole forming method is set at the outlet end of the first horizontal pipeline and the second horizontal pipeline.

[0011] Furthermore, a lifting assembly is provided on one side of the shell square bored pile hole forming method, which is used to control the lifting and lowering of the shell square bored pile hole forming method and the drill rod square bored pile hole forming method, and drive the drill bit to move up and down.

[0012] Furthermore, both the vertical high-pressure delivery assembly square bored pile hole forming method and the horizontal high-pressure delivery assembly square bored pile hole forming method include a slurry injector, a pressurized water pump and an abrasive conveyor.

[0013] The present application also provides a method for forming piles using any of the aforementioned trapezoidal anti-slip pile construction devices using a water jet, comprising the following steps:

[0014] S1. Pre-set parameters and confirm equipment status: Determine the cross-sectional dimensions and pile length of the trapezoidal anti-slip piles, as well as the external high-pressure water pressure and the negative pressure of the pumping system. Set the pressure and fluctuation range of the pressurized water pump, abrasive conveyor, and slurry injector based on on-site geological conditions. Check and confirm that the square bored pile drilling method of the lifting assembly and the drill rod rotation device are functioning properly.

[0015] S2. Positioning the shell and adjusting the verticality: Determine the specific dimensions of the shell square bored pile holes and the number of drill rod square bored pile holes required based on the designed pile dimensions; use external mechanical equipment to place the shell square bored pile holes at the predetermined position, and use tools to adjust the verticality of the shell square bored pile holes and the drill rod square bored pile holes;

[0016] S3. Assemble the drill rods and check their coordination: Install all drill rods in parallel and vertically to ensure their relative positions are accurate; thoroughly check the pressure water pump, abrasive conveyor and mud injector;

[0017] S4. Clearing the channels and starting the drilling: Before the drilling operation, clear the internal channels of the drill pipe square bored pile method one by one; adjust the pressure water pump to the set working water pressure, turn on the vertical pressure water pump, and start the vertical nozzle square bored pile method to spray; driven by the drill pipe rotating device, the drill bit of the drill pipe square bored pile method excavates vertically downward to complete the initial drilling;

[0018] S5. Grab the crushed rock and soil and pump out the water to clean it: Use a mechanical grab to grab and remove the cut and crushed rock and soil, and place the rock and soil in the designated location; after the vertical opening is completed, pump out the residual water in the opening;

[0019] S6. Horizontal hole expansion and grouting: When the vertical excavation reaches the specified height, start the horizontal pressure water pump to expand the hole; at the same time, carry out grouting through the vertical channel, and select a horizontal channel for simultaneous grouting according to actual needs; during the grouting process, use the lifting component to slowly lift the drill rod to ensure uniform grouting without bubbles, and form a stable connection between part of the soil and the mud.

[0020] Furthermore, in step S4, when the drilling speed of the drill rod square bored pile method decreases, abrasive is introduced through the abrasive channel square bored pile method to enhance the cutting strength of the vertical nozzle square bored pile method and the horizontal nozzle square bored pile method.

[0021] Furthermore, in step S4, the pressure water pump is adjusted to a suitable horizontal high-pressure water pressure, and the water pressure is gradually reduced as the height of the drill rod square bored pile hole forming method is increased.

[0022] Furthermore, in step S6, after the grouting is completed, the formed trapezoidal special-shaped anti-slip piles are cured.

[0023] The present invention has the following beneficial effects:

[0024] The present invention utilizes a square shell to control the vertical hole shape while also playing a supporting role. A grouting channel, a horizontal high-pressure water channel, and a vertical high-pressure water channel are provided in the drill bit body. An abrasive channel is also provided, the end of which is connected to the horizontal high-pressure water channel and the vertical high-pressure water channel. The vertical high-pressure water channel is utilized in conjunction with the drill bit to drill holes, the horizontal high-pressure water channel is utilized to expand and shape the pile foundation hole, the horizontal water pressure control device is utilized to control the hole shape, and the cement slurry is utilized to pour cement slurry. At the same time, abrasives can be added to the horizontal high-pressure water channel and the vertical high-pressure water channel to enhance the cutting strength of the high-pressure water body, thereby improving the overall cutting strength of the drill bit body and reducing the wear of the drill bit head, so that the drill bit has a longer service life.

[0025] The present invention introduces high-pressure water jet technology. By adjusting the injection pressure of the high-pressure water jet, the size requirements of different trapezoidal and special-shaped anti-slip piles can be met, the wear and aging problems of mechanical drill bits can be reduced, the construction costs can be effectively controlled, the construction process can be simplified, the construction efficiency can be improved, and a better processing option can be provided for the drilling construction of trapezoidal and special-shaped anti-slip piles. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic structural diagram of the water jet trapezoidal anti-slip pile construction device of the present invention;

[0027] Figure 2 A side view of the water jet trapezoidal anti-slip pile of the present invention;

[0028] Figure 3 Schematic diagram of the construction process before drilling of the water jet trapezoidal anti-slip pile of the present invention;

[0029] Figure 4 Schematic diagram of the construction process of the water jet trapezoidal anti-slip pile in the hole of the present invention;

[0030] Figure 5 It is a schematic diagram of the hole expansion, forming and pouring construction process of the water jet trapezoidal special-shaped anti-slip pile of the present invention.

[0031] In the figure: 1. Housing; 2. Drill rod; 3. Vertical high-pressure water pipeline; 31. Vertical nozzle; 4. Horizontal high-pressure water pipeline; 41. Horizontal nozzle; 5. Abrasive channel; 6. Vertical high-pressure conveying assembly; 7. Horizontal high-pressure conveying assembly; 71. First high-pressure conveyor; 72. Second high-pressure conveyor; 8. Lifting assembly. DETAILED DESCRIPTION

[0032] 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.

[0033] Please refer to Figure 1-5 The present invention provides a water jet trapezoidal anti-slip pile construction device and method, aiming to address the existing problems of low efficiency, high cost, and difficulty adapting to complex geological conditions in anti-slip pile construction. The following is a detailed description of specific embodiments of the present invention.

[0034] The present invention's trapezoidal, irregularly shaped water jet anti-slip pile construction device includes a square housing 1 designed to provide support during the drilling process, while also protecting the drill bit and water pipe within. Multiple drill rods 2 are vertically spaced within the housing 1. The number of drill rods 2 can be selected based on the desired excavation depth to accommodate various hole sizes and depths. The drill rods 2 are rotated by a drill rod rotation device to facilitate drilling.

[0035] A vertical high-pressure water pipe 3 and an abrasive channel 5 are provided inside each drill rod 2. The top of the vertical high-pressure water pipe 3 is connected to the abrasive channel 5, and the bottom is connected to the vertical nozzle 31. The vertical high-pressure water pipe 3 is used to transport high-pressure water, and a high-pressure water jet is ejected through the vertical nozzle 31 to cut and crush the rock and soil. The abrasive channel 5 is used to transport abrasives, such as corundum or quartz sand, which are hard and have small particle sizes and are not easy to clog the pipe. When the drilling speed of the drill rod 2 decreases, it indicates that the vertical high-pressure water jet nozzle has encountered a hard soil or rock layer. At this time, the abrasive is introduced through the abrasive channel 5 to enhance the cutting strength of the vertical nozzle 31 for cutting hard rock.

[0036] The top of the abrasive channel 5 is connected to a vertical high-pressure delivery assembly 6 via a first delivery pipe. This assembly, which includes a slurry injector, a pressurized water pump, and an abrasive conveyor, is used to deliver abrasive and high-pressure water to the abrasive channel 5. The slurry injector provides slurry, the pressurized water pump provides high-pressure water, and the abrasive conveyor delivers the abrasive into the abrasive channel 5.

[0037] The interior of the drill pipe 2 is also provided with a horizontal high-pressure water pipe 4, the end of which is connected to a horizontal nozzle 41 provided on the side of the housing 1. The horizontal high-pressure water pipe 4 is used to transport high-pressure water, and a high-pressure water jet is ejected through the horizontal nozzle 41 to perform horizontal hole expansion operations. The top of the horizontal high-pressure water pipe 4 is connected to the horizontal high-pressure delivery assembly 7 via a second delivery pipe and a high-pressure water pump. The horizontal high-pressure delivery assembly 7 also includes a mud injector, a pressurized water pump, and an abrasive conveyor, which are used to deliver mud, high-pressure water, and abrasive to the horizontal high-pressure water pipe 4.

[0038] Furthermore, the horizontal high-pressure water pipeline 4 includes a first horizontal pipeline and a second horizontal pipeline, each of which is separately provided. The first high-pressure conveyor 71 of the horizontal high-pressure conveying assembly 7 is connected to the first horizontal pipeline, and the second high-pressure conveyor 72 is connected to the second horizontal pipeline. This design allows the horizontal high-pressure water jet to be injected from different directions and at different pressures, improving the efficiency and effectiveness of the hole expansion operation and facilitating the formation of a trapezoidal cross-section within the soil. Horizontal nozzles 41 are provided at the outlet ends of both the first and second horizontal pipelines for injecting the high-pressure water jet.

[0039] A lifting assembly 8 is provided on one side of the housing 1. The lifting assembly 8 is used to control the lifting and lowering of the housing 1 and the drill rod 2, thereby driving the drill bit to move up and down. The lifting assembly 8 may include a lifting mechanism such as a hydraulic cylinder and a screw, and the lifting and lowering of the housing 1 and the drill rod 2 are achieved by controlling the extension and retraction of the lifting mechanism.

[0040] The present invention also provides a method for forming piles using the above-mentioned water jet trapezoidal anti-slip pile construction device, which specifically includes the following steps:

[0041] S1. Preset parameters and confirm the equipment status. First, determine the cross-sectional dimensions of the trapezoidal special-shaped anti-slip piles, the pile body length, the working water pressure of the external high-pressure water, and the negative pressure value of the pumping system. These parameters need to be determined according to specific engineering requirements and geological conditions. Then, according to the on-site geological conditions, set the pressure and fluctuation range of the pressurized water pump, abrasive conveyor, and mud injector. The pressure and fluctuation range of these devices need to be determined based on factors such as geological conditions, the diameter and length of the drill rod 2. Finally, check and confirm that the lifting assembly 8 and the drill rod rotating device are functioning normally to ensure that the construction device can work normally.

[0042] S2. Position the casing and adjust its verticality. Based on the designed pile dimensions, determine the specific dimensions of the casing 1 and the number of drill rods 2 required. Then, use external mechanical equipment to position the casing 1 in the desired location, and use tools to adjust the verticality of the casing 1 and drill rods 2. Ensure that the casing 1 and drill rods 2 remain vertical during drilling to avoid deflection or tilt that could compromise drilling quality.

[0043] S3. Assemble the drill rods and check their coordination. Install all drill rods 2 in parallel and vertically, ensuring their relative positioning is accurate. The relative positioning of the drill rods 2 must be consistent to ensure the required borehole diameter and depth. Next, thoroughly inspect the booster pump, abrasive conveyor, and mud injector to ensure they are functioning properly and cooperating properly.

[0044] S4, clear the channel and start drilling. Before the drilling operation, clear the vertical high-pressure water pipe 3, horizontal high-pressure water pipe 4 and abrasive channel 5 inside the drill rod 2 one by one to ensure that these channels are unobstructed. Then, adjust the pressure water pump to the set working water pressure, turn on the vertical pressure water pump, and start the vertical nozzle 31 for spraying. Driven by the drill rod rotating device, the drill bit of the drill rod 2 digs vertically downward to complete the initial drilling. During the drilling process, it is necessary to pay close attention to the changes in drilling speed. When the drilling speed of the drill rod 2 decreases, it indicates that the vertical high-pressure water jet nozzle has encountered a hard soil or rock layer. At this time, abrasive is introduced through the abrasive channel 5 to enhance the cutting strength of the vertical nozzle 31 and the horizontal nozzle 41 to cut hard rock. At the same time, the pressure water pump needs to be adjusted to a suitable horizontal high-pressure water pressure, and as the height of the drill rod 2 increases, the water pressure is gradually reduced to adapt to geological conditions at different depths.

[0045] S5. Grab the crushed rock and soil and pump out the water. Once the vertical drilling is complete, use a mechanical grab to grab and remove the cut and crushed rock and soil and place it in the designated location. Then, pump out any remaining moisture in the drilled hole to ensure it is dry and free of water. This step is crucial for the subsequent grouting operation, as water accumulation can affect the grouting effect and the quality of the anti-slip piles.

[0046] S6, horizontal hole expansion and grouting operations. When the vertical excavation reaches the specified height, start the horizontal pressure water pump to carry out hole expansion operations. The horizontal high-pressure water jet is ejected through the horizontal nozzle 41 to cut and expand the borehole in the horizontal direction. At the same time, grouting operations are carried out through the vertical channel. The grouting material can be cement slurry, cement mortar or other suitable grouting materials. During the grouting process, it is necessary to use the lifting assembly 8 to slowly lift the drill rod 2 to ensure that the grouting is uniform and free of bubbles. Part of the soil and the mud will form a stable connection to enhance the bearing capacity and stability of the anti-slip pile. After the grouting is completed, the trapezoidal special-shaped anti-slip piles formed need to be maintained to ensure that their strength and stability meet the design requirements.

[0047] During implementation, the following points should be noted:

[0048] Before drilling, it is necessary to select a shell 1 of appropriate size according to the drilling requirements. The size of the shell 1 needs to meet the requirements of supporting the drill bit and protecting the internal drill pipe. At the same time, the shape of the shell 1 is designed to be square, which can be more conveniently positioned and adjusted in verticality.

[0049] The number and length of drill rods 2 should be selected based on the desired excavation depth. This ensures that various hole sizes and depths can be achieved without replacing the drill rods 2. Furthermore, the relative positions of the drill rods 2 must be kept consistent to ensure the required hole diameter and depth are achieved.

[0050] Drill pipe 2 is internally connected to various pipes, including a vertical high-pressure water pipe 3, a horizontal high-pressure water pipe 4, and an abrasive channel 5. These pipes must remain unobstructed to ensure smooth delivery of high-pressure water and abrasive to the nozzle for injection. Furthermore, changes in drilling speed must be closely monitored to ensure timely adjustments to water pressure and abrasive delivery.

[0051] During the grouting process, the drill rod 2 needs to be slowly lifted up by the lifting assembly 8 to ensure uniform grouting without bubbles. After the grouting is completed, the formed trapezoidal anti-slip pile needs to be cured, and the curing time can be determined according to the grouting material and design requirements.

[0052] The choice of abrasive significantly impacts cutting strength. Abrasives such as corundum or quartz sand are hard and small in size, making them less likely to clog pipes. Furthermore, the abrasive can be drawn into the drill bit's channel via an external abrasive delivery device or through the Venturi effect of high-pressure water flowing through the drill bit's channel.

[0053] During the construction process, it is necessary to pay close attention to the operating status of the equipment and changes in the drilling quality. Once an abnormality or quality problem is found, it is necessary to stop the machine for inspection and take appropriate measures to deal with it.

[0054] In summary, the water jet trapezoidal anti-slip pile construction device and method of the present invention offer advantages such as high construction efficiency, low cost, and strong adaptability. By rationally designing the housing 1, drill rod 2, vertical high-pressure water conduit 3, horizontal high-pressure water conduit 4, and abrasive channel 5, and employing appropriate construction methods, efficient construction of trapezoidal anti-slip piles can be achieved even in complex geological conditions. Furthermore, the present invention can be adjusted and optimized based on specific project requirements and geological conditions to meet diverse needs.

[0055] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0056] 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. A water jet trapezoidal anti-slip pile construction device, characterized in that: include: A housing (1) is provided with a plurality of drill rods (2) arranged vertically at intervals inside the housing (1), the drill rods (2) being driven to rotate by a drill rod rotating device, a vertical high-pressure water pipe (3), a horizontal high-pressure water pipe (4) and an abrasive channel (5) being provided inside each drill rod (2), the top of the vertical high-pressure water pipe (3) being in communication with the abrasive channel (5), and the bottom of the vertical high-pressure water pipe (3) being in communication with a vertical nozzle (31); the top of the abrasive channel (5) being in communication with a vertical high-pressure delivery assembly (6) via a first delivery pipe; The end of the horizontal high-pressure water pipe (4) is connected to a horizontal nozzle (41) arranged at the side end of the housing (1); the top of the horizontal high-pressure water pipe (4) is connected to a horizontal high-pressure delivery assembly (7) through a second delivery pipe and a high-pressure water pump.

2. The water jet trapezoidal anti-slide pile construction device according to claim 1 is characterized in that: The horizontal high-pressure water pipeline (4) includes a first horizontal pipeline and a second horizontal pipeline, and the horizontal high-pressure delivery assembly (7) includes a first high-pressure delivery device (71) and a second high-pressure delivery device (72); The first high-pressure conveyor (71) is in communication with a first horizontal pipeline, the second high-pressure conveyor (72) is in communication with a second horizontal pipeline, and the horizontal nozzle (41) is provided at the outlet ends of both the first horizontal pipeline and the second horizontal pipeline.

3. The water jet trapezoidal anti-slip pile construction device according to claim 1, characterized in that: A lifting assembly (8) is provided on one side of the housing (1) for controlling the lifting and lowering of the housing (1) and the drill rod (2) and driving the drill bit to move up and down.

4. The water jet trapezoidal anti-slide pile construction device according to claim 1, characterized in that: The vertical high-pressure delivery assembly (6) and the horizontal high-pressure delivery assembly (7) both include a slurry injector, a pressurized water pump, and an abrasive conveyor.

5. A method for forming piles using the water jet trapezoidal anti-slip pile construction device according to any one of claims 1 to 4, characterized in that: The following steps are involved: S1. Pre-set parameters and confirm equipment status: determine the cross-sectional dimensions of the trapezoidal anti-slip pile, the pile length, the working pressure of the external high-pressure water, and the negative pressure value of the pumping system; set the pressure and fluctuation range of the pressurized water pump, abrasive conveyor, and mud injector according to the on-site geological conditions; check and confirm that the lifting assembly (8) and the drill pipe rotating device are functioning normally; S2. Positioning the shell and adjusting the verticality: Determine the specific size of the shell (1) and the number of drill rods (2) required based on the designed pile size; use external mechanical equipment to place the shell (1) at the predetermined position, and use tools to adjust the verticality of the shell (1) and the drill rods (2); S3. Assemble the drill rods and check their coordination: Install all the drill rods (2) in parallel and vertically, ensuring that their relative positions are accurate; thoroughly check the pressure water pump, abrasive conveyor and mud injector; S4. Clearing the channels and starting the drilling: Before the drilling operation, clear the internal channels of the drill rod (2) one by one; adjust the pressure water pump to the set working water pressure, turn on the vertical pressure water pump, and start the vertical nozzle (31) to spray; under the drive of the drill rod rotating device, the drill bit of the drill rod (2) is vertically excavated downward to complete the initial drilling; S5. Grab the crushed rock and soil and pump out the water to clean it: Use a mechanical grab to grab and remove the cut and crushed rock and soil, and place the rock and soil in the designated location; after the vertical opening is completed, pump out the residual water in the opening; S6. Horizontal hole enlargement and grouting operation: When the vertical excavation reaches the specified height, the horizontal pressure water pump is started to perform hole enlargement operation; at the same time, grouting operation is performed through the vertical channel, and a horizontal channel is selected according to actual needs to perform grouting at the same time; during the grouting process, the lifting component (8) is used to slowly lift the drill rod (2) to ensure that the grouting is uniform and free of bubbles, and that part of the soil and the mud form a stable connection.

6. The water jet trapezoidal anti-slide pile construction method according to claim 5, characterized in that: In step S4, when the drilling speed of the drill rod (2) decreases, abrasive is introduced through the abrasive channel (5) to enhance the cutting strength of the vertical nozzle (31) and the horizontal nozzle (41).

7. The water jet trapezoidal anti-slide pile construction method according to claim 5, characterized in that: In step S4, the pressure water pump is adjusted to a suitable horizontal high-pressure water pressure, and the water pressure is gradually reduced as the height of the drill rod (2) is increased.

8. The water jet trapezoidal anti-slide pile construction method according to claim 5, characterized in that: In step S6, after the grouting is completed, the formed trapezoidal special-shaped anti-slip piles are cured.

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