Pouring machine for high-pressure jet grouting reinforced cement soil pile anchor deep foundation pit supporting construction

Abstract

The invention relates to the technical field of concrete pouring equipment, and discloses a high-pressure jet grouting reinforced cement soil pile anchor deep foundation pit supporting construction pouring machine which comprises a connecting pipe and a drill bit, a slurry conveying pipe and a water pipe are arranged in a drill rod, a dispersing cavity is formed in the connecting pipe, and the slurry conveying pipe and the water pipe both communicate with the dispersing cavity; an output pipe and a blocking pipe capable of blocking the output pipe are arranged in the dispersing cavity, and the output pipe is communicated with the outflow opening. According to the pouring machine for supporting construction of the high-pressure jet grouting reinforced cement soil pile anchor deep foundation pit, the dispersing cavity is formed between the spray head and the slurry conveying pipe, when cement slurry in the slurry conveying pipe begins to be coagulated and the flowability is reduced, flushing water input by the water pipe can directly disperse the cement slurry to be coagulated in the dispersing cavity, and the cement slurry in the spray head is rapidly cleaned. And secondly, blockage of the spray head can be judged in time through pressure increase in the dispersion cavity, the dispersion cavity and the spray head can be quickly washed, and cement grout in the grout conveying pipe is prevented from being further coagulated and blocked.

Description

Technical Field

[0001] The present application relates to the technical field of concrete pouring equipment, and in particular to a pouring machine for high-pressure rotary jet reinforced cement soil pile anchor deep foundation pit support construction. Background Art

[0002] High-pressure jet-jet piles use high-pressure equipment to spray cement slurry through nozzles in the form of high-pressure jets, impacting and destroying the soil, so that the slurry and soil are mixed to form a consolidated body. The pouring machine structure used in its construction mainly includes drilling equipment, high-pressure pumps, high-pressure machines, injection pipes and cement slurry preparation equipment.

[0003] During construction, cement transportation is a key link that affects the quality of pile formation and construction efficiency. The agglomeration of cement slurry will cause the nozzle to be blocked. When the nozzle is blocked, the flow of cement slurry slows down, which can easily lead to blockage of the injection pipeline. Therefore, when blockage occurs, the pump needs to be stopped immediately and the pipeline needs to be flushed with clean water, which will affect the construction efficiency.

[0004] Secondly, existing equipment usually uses pressure gauges and flow meters to determine whether blockage has occurred, and the judgment is relatively delayed. Generally, the blockage can only be discovered when it becomes more serious. Summary of the invention

[0005] The present application proposes a high-pressure rotary jet reinforced cement-soil pile anchor casting machine for deep foundation pit support construction, in which a dispersion chamber is arranged between the nozzle and the slurry pipe. When the slurry pipe is blocked, the cement slurry that is about to solidify in the dispersion chamber can be directly dispersed, and the cement slurry in the nozzle can be quickly cleaned. At the same time, the nozzle can also be blocked in time by the increase in pressure in the dispersion chamber, so as to avoid further solidification and blockage of the cement slurry in the slurry pipe.

[0006] To achieve the above-mentioned purpose, the present application adopts the following technical scheme: a pouring machine for high-pressure rotary grouting reinforced cement soil pile anchor deep foundation pit support construction, including a drill rod, a connecting pipe and a drill bit are fixedly connected to the bottom of the drill rod, a slurry pipe and a water pipe are arranged inside the drill rod, the slurry pipe and the water pipe are connected to the high-pressure mud pump and the water pump on the ground through a high-pressure rotary joint, the slurry pipe is provided with a pressure gauge capable of detecting the grouting pressure, a dispersion cavity is arranged in the connecting pipe, the slurry pipe and the water pipe are both connected to the dispersion cavity, the dispersion cavity is connected to a nozzle, an output pipe and a blocking pipe capable of blocking the output pipe are arranged in the dispersion cavity, the output pipe is connected to an outflow port, the outflow port is located above the nozzle, the inner diameter of the outflow port is larger than the nozzle, and a sensor capable of sensing the pressure change in the dispersion cavity is arranged in the connecting pipe; When an abnormal increase in grouting pressure is detected, the staff triggers or automatically triggers the output pipe to open and intermittently inputs a set amount of flushing water into the flushing cavity through the water pipe until the cement slurry in the grouting pipe is completely replaced. The interval time is long enough for the cement slurry in the flushing cavity to be completely flushed out; When the sensor senses that the pressure in the flushing chamber increases abnormally, the staff triggers or automatically triggers the output pipe to open and inputs a set amount of flushing water into the flushing chamber through the water pipe. The extension of the telescopic tube and the injection of water into the water pipe are long enough for the cement slurry in the flushing chamber to be completely flushed out.

[0007] Furthermore, a fixed plate and a movable plate are provided in the connecting tube, the fixed plate is fixedly connected to the connecting tube, the movable plate is movably connected to the connecting tube, a spring is provided between the ends of the movable plate and the connecting tube, the spring pressure makes the movable plate close to the limiting structure, a dispersion cavity is formed between the fixed plate and the movable plate, the fixed plate is fixedly connected to the output tube, the movable plate is fixedly connected to the blocking tube, when the movable plate is close to the limiting structure, the blocking tube blocks the lower end of the output tube, a telescopic tube is provided between the fixed plate and the movable plate, the telescopic tube can drive the movable plate to move, and the output tube is opened or closed by controlling the telescopic tube to extend or retract, and the sensor is used to sense the pressure between the movable plate and the limiting structure.

[0008] Furthermore, a telescopic bag is provided between the fixed plate and the movable plate, and the dispersion cavity is located in the telescopic bag.

[0009] Furthermore, the telescopic tube is a hydraulic rod, and the telescopic tube is connected to a water pipe. After the water pump is turned on, the pressure of the flushing water drives the telescopic tube to extend.

[0010] Furthermore, the middle part of the blocking tube is hollow and connected to a water pipe. After the cement slurry condensed in the pipeline is cleaned, the movable plate is gradually reset. After the blocking tube blocks the output pipe, the blocking tube continues to spray water for a period of time to clean the residual cement slurry in the output pipe, thereby preventing the cement slurry from blocking the output pipe and the outflow port.

[0011] Furthermore, the water pipe is connected to the dispersion chamber through a water spray assembly. Since the dispersion chamber is filled with high-pressure cement slurry, in order to prevent the cement slurry from flowing back into the water spray assembly, the water spray assembly includes a water spray pipe connected to the water pipe and an isolation sleeve fixedly connected to the movable plate. The inner diameter of the isolation sleeve is larger than the outer diameter of the water spray pipe. The isolation sleeve is fixedly connected to a conical plug. When the movable plate is close to the limiting structure, the conical plug blocks the end of the water spray pipe. When the water spray pipe and the conical plug are recombined, the water spray pipe maintains a water spraying state. A plurality of groups of relative connecting holes are provided at the bottom of the side wall of the isolation sleeve.

[0012] Furthermore, the water flow sprayed out by the plugging tube is sprayed out in a scattered form, and a sleeve cover capable of covering the plugging tube is provided at the bottom of the output tube. The sleeve cover concentrates the scattered water flow on the inner wall of the output tube, ensuring that when the plugging tube is inserted into the output tube, the mud and sand on the inner wall of the output tube is washed away.

[0013] Furthermore, the outflow outlet is movably connected with a cover plate, which is pressed against the end of the outflow outlet under the action of elastic force, and the cover plate is opened outward, and the cover plate is inclined from top to bottom toward the drill pipe, and the hinge axis of the cover plate is located at the bottom. The force of the return slurry acts on the cover plate tending to cause the cover plate to close the outflow outlet. An intermediate cavity is provided between the outflow outlet and the output pipe, and the water pump supplies water to the sealing pipe at a regular interval to flush the output pipe and the outflow outlet.

[0014] The beneficial effects of the present invention are as follows: The present application provides a high-pressure rotary jet reinforced cement-soil pile anchor casting machine for deep foundation pit support construction, in which a dispersion chamber is arranged between the nozzle and the slurry pipe. When the cement slurry in the slurry pipe begins to solidify and the fluidity decreases, the flushing water input by the water pipe can directly disperse the cement slurry that is about to solidify in the dispersion chamber, quickly clean the cement slurry in the nozzle, and ensure the continuity of construction.

[0015] Secondly, the nozzle blockage can be judged in time by the increase of pressure in the flushing cavity, and the flushing cavity and the nozzle can be quickly flushed to avoid further coagulation and blockage of cement slurry in the slurry pipe, which would interrupt the construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below. Obviously, the drawings in the following description are only embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on the provided drawings without creative work: Figure 1 It is a partial front view of the present invention; Figure 2 It is a three-dimensional structural diagram of the present invention; Figure 3 For the present invention Figure 1 A partial cross-sectional view of Figure 4 It is a schematic diagram of the connection of the water pipe, the telescopic pipe, the plugging pipe and the water spraying assembly in the present invention; Figure 5 is a schematic diagram of a water spray assembly in the present invention; Figure 6 It is a schematic diagram of the blocking tube and the output tube in the present invention; Figure 7 For the present invention Figure 1 A is an enlarged view of the middle image.

[0017] In the figure: 1. drill rod; 2. connecting pipe; 3. drill bit; 4. nozzle; 5. outflow port; 6. slurry delivery pipe; 7. water pipe; 8. fixed plate; 9. movable plate; 10. sensor; 11. output pipe; 12. blocking pipe; 13. telescopic pipe; 14. cover plate; 15. telescopic bag; 16. control valve; 17. water spray assembly; 171. water spray pipe; 172. isolation sleeve; 173. conical plug; 174. connecting hole; 18. sleeve cover; 19. intermediate cavity. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0019] For example, see Figure 1-Figure 3 The high-pressure rotary grouting reinforced cement soil pile anchor deep foundation pit support construction casting machine comprises a drill rod 1, a connecting pipe 2 and a drill bit 3 are fixedly connected to the bottom of the drill rod 1, a slurry delivery pipe 6 and a water pipe 7 are arranged inside the drill rod 1, and the slurry delivery pipe 6 and the water pipe 7 are connected to the high-pressure mud pump and the water pump on the ground through a high-pressure rotary joint, and the high-pressure rotary joint is generally arranged at the top of the drill rod 1. Figure 1-Figure 3A high-pressure rotary joint is not shown in the figure. A fixed plate 8 and a movable plate 9 are arranged in the connecting pipe 2. The fixed plate 8 is fixedly connected to the connecting pipe 2, and the movable plate 9 is movably connected to the connecting pipe 2. A spring is arranged between the movable plate 9 and the end of the connecting pipe 2. The spring is pre-tightened, and the pressure acts on the movable plate 9, so that the movable plate 9 is close to the limiting structure. A dispersion cavity is formed between the fixed plate 8 and the movable plate 9. The spring pressure makes the dispersion cavity tend to become smaller. The slurry delivery pipe 6 and the water pipe 7 are both connected to the dispersion cavity. The dispersion cavity is connected to a nozzle 4 through a hose. The nozzle 4 passes through the side wall of the connecting pipe 2. The hose can adapt to the up and down movement of the movable plate 9. The slurry delivery pipe 6 transports the high-pressure cement slurry to the dispersion cavity, and then disperses it from the dispersion cavity. The cavity flows to the nozzle 4 and is sprayed out from the nozzle 4. An output pipe 11 is provided in the dispersed cavity. The output pipe 11 passes through the fixed plate 8 and is fixedly connected to the fixed plate 8. A blocking pipe 12 is provided at the position of the movable plate 9 corresponding to the output pipe 11. When the movable plate 9 is close to the limiting structure, the blocking pipe 12 blocks the lower end of the output pipe 11. The output pipe 11 is connected with the outflow port 5. The outflow port 5 is located above the nozzle 4. The inner diameter of the outflow port 5 is larger than the nozzle 4. The outflow port 5 can make the cement slurry flow out quickly. A telescopic pipe 13 is provided between the fixed plate 8 and the movable plate 9. The telescopic pipe 13 can drive the movable plate 9 to move. When the cement slurry in the pipeline begins to solidify, the fluidity decreases and the grouting pressure increases. , when the grouting pressure becomes abnormally large, the abnormal increase means that the grouting pressure is greater than the set value or the instantaneous change of pressure is greater than the set value, the staff triggers or automatically triggers the telescopic tube 13 and starts the water pump to inject water into the dispersing cavity through the water pipe 7, the telescopic tube 13 extends to drive the movable plate 9 to move, the blocking tube 12 and the output pipe 11 are separated, and the cement that begins to solidify in the dispersing cavity flows along the output pipe 11 to the outflow port 5 and is sprayed out from the outflow port 5. The sprayed mud returns to the ground and replaces the cement that begins to solidify in the pipeline, avoiding pipeline blockage and not interfering with construction. A sensor 10 is provided between the movable plate 9 and the limiting structure. When the nozzle 4 is blocked, the pressure in the dispersing cavity increases abnormally. When the pressure When the spring pressure can be overcome, the movable plate 9 will move under the pressure, and the blocking tube 12 and the output tube 11 will be separated. After the sensor 10 detects the movement of the movable plate 9, it will trigger the telescopic tube 13 to move and trigger the water pump to start. In other embodiments, the sensor 10 can directly detect the pressure in the dispersion chamber, and the high-pressure water flows into the dispersion chamber through the water pipe 7. At the same time, the blocking tube 12 and the output tube 11 are separated, and the cement slurry in the dispersion chamber is flushed into the output tube 11 and sprayed out from the outflow port 5. At the same time, the water can also clean the mud blocks that block the nozzle 4. The pressure in the water pipe 7 is greater than the pressure in the slurry delivery pipe 6. When the water pipe 7 injects water into the dispersion chamber, the flushing water in the water pipe flows into the dispersion chamber first.

[0020] A telescopic bag 15 is provided between the fixed plate 8 and the movable plate 9 . The flushing cavity is located in the telescopic bag 15 . The cement slurry is enclosed in the telescopic bag 15 , which will not pollute the inner wall of the connecting pipe 2 and will not affect the up and down movement of the movable plate 9 . The sensor 10 is located outside the telescopic bag 15 .

[0021] See also Figure 2-Figure 4 The telescopic tube 13 is a hydraulic rod. The telescopic tube 13 is connected to the water pipe 7. A control valve 16 is provided between the water pipe 7 and the telescopic tube 13. When the staff triggers the telescopic tube 13, the control valve 16 opens. After the water pump is turned on, the pressure of the flushing water drives the telescopic tube 13 to extend. The control valve 16 is located at the top of the fixed plate 8.

[0022] The middle part of the blocking tube 12 is hollow, and the blocking tube 12 is connected to the water pipe 7. The water pipe 7 passes through the telescopic bag 15 and the flushing cavity and is connected to the blocking tube 12. After the cement slurry condensed in the pipeline is cleaned up, the water pump is turned off, and the movable plate 9 is gradually reset. After the blocking tube 12 blocks the output pipe 11, the blocking tube 12 continues to spray water for a period of time to clean up the residual cement slurry in the output pipe 11, so as to prevent the cement slurry from blocking the output pipe 11 and the outflow port 5.

[0023] See also Figure 2 and Figure 5 The water pipe 7 is connected to the dispersing cavity through the water spray assembly 17. Since the dispersing cavity is filled with high-pressure cement slurry, in order to prevent the cement slurry from flowing back into the water spray assembly 17, the water spray assembly 17 includes a water spray pipe 171 connected to the water pipe 7 and an isolation sleeve 172 fixedly connected to the movable plate 9. The inner diameter of the isolation sleeve 172 is larger than the outer diameter of the water spray pipe 171. The isolation sleeve 172 is fixedly connected to the conical plug 173. When the movable plate 9 is close to the limiting structure, the conical plug 173 blocks the end of the water spray pipe 171, and when the water spray pipe 1 When the water pipe 171 and the conical plug 173 are recombined, the water spray pipe 171 keeps spraying water to clean the conical plug 173. When the water spray pipe 171 is first inserted into the isolation sleeve 172, the isolation sleeve 172 concentrates the water flow to make the conical plug 173 more clean and avoid debris being stuck between the water spray pipe 171 and the conical plug 173. A plurality of groups of relative connecting holes 174 are provided at the bottom of the side wall of the isolation sleeve 172 to keep the cement slurry in the isolation sleeve 172 in flow and avoid the cement slurry from condensing in the isolation sleeve 172.

[0024] In order to ensure that the plugging pipe 12 and the output pipe 11 are not stuck by the sand and gravel in the cement slurry when they are combined, please refer to Figure 2 and Figure 6 The water flow sprayed from the plugging pipe 12 is sprayed in a scattered form, and the scattered cement washes the inner wall of the output pipe 11. In order to increase the pressure of the water flow, a sleeve cover 18 that can cover the plugging pipe 12 is provided at the bottom of the output pipe 11. The sleeve cover 18 makes the scattered water flow concentrate on the inner wall of the output pipe 11, ensuring that when the plugging pipe 12 is inserted into the output pipe 11, the mud and sand on the inner wall of the output pipe 11 are washed away.

[0025] See also Figure 4 and Figure 7The outflow port 5 is movably connected with a cover plate 14, and the cover plate 14 is pressed against the end of the outflow port 5 under the action of elastic force, and the cover plate 14 is opened outward, and the cover plate 14 is inclined from top to bottom toward the drill pipe 1, and the hinge axis of the cover plate 14 is located at the bottom. The force of the return slurry acts on the cover plate 14, tending to make the cover plate 14 close the outflow port 5, so as to prevent the return slurry flowing along the guide hole from flowing into the outflow port 5. An intermediate cavity 19 is provided between the outflow port 5 and the output pipe 11, and a small amount of return slurry flowing into the outflow port 5 is dispersed in the intermediate cavity 19 and will not condense. In order to ensure that the intermediate cavity 19 and the outflow port 5 are not blocked by the return slurry, the blocking pipe 12 sprays water regularly. In this embodiment, a control valve 16 is provided between the water spraying assembly 17, the telescopic pipe 13 and the water pipe 7, and the water pump supplies water to the blocking pipe 12 regularly to flush the output pipe 11 and the outflow port 5.

[0026] During pouring, the drill rod 1 rises and rotates at the same time, and cement slurry is sprayed out from the nozzle 4. When the cement slurry is about to solidify, the fluidity decreases and the grouting pressure increases. When the grouting pressure is higher than the set value or the staff determines that the grouting pressure is abnormal, the water pump and the control valve 16 are triggered to open, and the telescopic tube 13 extends under the water pressure, driving the movable plate 9 to move, the blocking tube 12 and the output tube 11 are separated, the water spray pipe 171 and the conical plug 173 are separated, and the water flows into the flushing cavity to flush the cement slurry in the flushing cavity and the cement blocks on the nozzle 4, so that the cement slurry quickly flows out of the nozzle 4 and the outlet. 5, the cement slurry sprayed from the outflow port 5 flows back to the ground along the guide hole. When the flushing reaches the set time, the water pump is turned off and waits for the set time. After the dispersing cavity is filled with cement slurry again, the water pump is turned on again. The set number of times is repeated until the cement slurry that is about to solidify in the slurry delivery pipe 6 is replaced. Finally, the water pump output power is reduced, the water flow pressure is reduced, and the movable plate 9 is gradually reset. At the same time, the isolation sleeve 172 and the blocking pipe 12 maintain the water spraying state to flush away the nearby mud and sand. After ensuring that the water spraying pipe 171 and the output pipe 11 are completely blocked, the water pump and the control valve 16 are turned off. When the cement slurry is partially condensed to form a cement block that blocks the nozzle 4, the pressure in the dispersing cavity increases. When the sensor 10 senses the movement of the movable plate 9, the water pump and the control valve 16 are triggered to open. After flushing the dispersing cavity and the nozzle 4, the water pump output power is reduced, the output pressure is reduced, and the water pump and the control valve 16 are turned off after the movable plate 9 is reset.

[0027] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A high-pressure rotary grouting reinforced cement soil pile anchor deep foundation pit support construction pouring machine, comprising a drill rod (1), a connecting pipe (2) and a drill bit (3) are fixedly connected to the bottom of the drill rod (1), a grouting pipe (6) and a water pipe (7) are provided inside the drill rod (1), the grouting pipe (6) and the water pipe (7) are connected to a high-pressure mud pump and a water pump on the ground through a high-pressure rotary joint, and a pressure gauge capable of detecting grouting pressure is provided on the grouting pipe (6), characterized in that: The connecting pipe (2) is provided with a dispersing cavity, the slurry delivery pipe (6) and the water pipe (7) are both in communication with the dispersing cavity, the dispersing cavity is in communication with a nozzle (4), an output pipe (11) and a blocking pipe (12) capable of blocking the output pipe (11) are provided in the dispersing cavity, the output pipe (11) is in communication with an outflow port (5), the outflow port (5) is located above the nozzle (4), the inner diameter of the outflow port (5) is larger than the inner diameter of the nozzle (4), and a sensor (10) capable of sensing pressure changes in the dispersing cavity is provided in the connecting pipe (2); When an abnormal increase in grouting pressure is detected, the staff triggers or automatically triggers the output pipe (11) to open and intermittently inputs a set amount of flushing water into the flushing cavity through the water pipe (7) until the cement slurry in the slurry delivery pipe (6) is completely replaced. The intermittent time and water consumption are sufficient to completely flush out the cement slurry in the flushing cavity; When the sensor (10) senses that the pressure in the flushing chamber increases abnormally, the staff triggers or automatically triggers the output pipe (11) to open and input flushing water into the flushing chamber through the water pipe (7). The extension of the telescopic pipe (13) and the injection of water into the water pipe (7) are long enough for the cement slurry in the flushing chamber to be completely flushed out.

2. The high-pressure rotary grouting reinforced cement soil pile anchor deep foundation pit support construction casting machine according to claim 1 is characterized in that: A fixed plate (8) and a movable plate (9) are provided in the connecting tube (2). The fixed plate (8) is fixedly connected to the connecting tube (2), and the movable plate (9) is movably connected to the connecting tube (2). A spring is provided between the movable plate (9) and the end of the connecting tube (2). The spring pressure causes the movable plate (9) to be pressed against the limiting structure. A dispersion cavity is formed between the fixed plate (8) and the movable plate (9). The fixed plate (8) is fixedly connected to the output tube (11). The movable plate (9) is fixedly connected to the blocking tube (12). When the movable plate (9) is pressed against the limiting structure, the blocking tube (12) blocks the lower end of the output tube (11). A telescopic tube (13) is provided between the fixed plate (8) and the movable plate (9). The telescopic tube (13) can drive the movable plate (9) to move. The output tube (11) is opened or closed by controlling the telescopic tube (13). The sensor (10) is used to sense the pressure between the movable plate (9) and the limiting structure.

3. The high-pressure rotary grouting reinforced cement soil pile anchor deep foundation pit support construction casting machine according to claim 2 is characterized in that: A telescopic bag (15) is provided between the fixed plate (8) and the movable plate (9), and the dispersion cavity is located inside the telescopic bag (15).

4. The high-pressure rotary grouting reinforced cement soil pile anchor deep foundation pit support construction casting machine according to claim 2, characterized in that: The telescopic tube (13) is a hydraulic rod. The telescopic tube (13) is connected to the water pipe (7). After the water pump is turned on, the pressure of the flushing water drives the telescopic tube (13) to extend.

5. The high-pressure rotary grouting reinforced cement soil pile anchor deep foundation pit support construction casting machine according to claim 4, characterized in that: The middle of the blocking pipe (12) is hollow and connected to the water pipe (7). After the cement slurry solidified in the pipeline is cleaned, the movable plate (9) is gradually reset, and after the blocking pipe (12) blocks the output pipe (11), the blocking pipe (12) continues to spray water for a period of time.

6. The high-pressure rotary grouting reinforced cement soil pile anchor deep foundation pit support construction casting machine according to claim 5, characterized in that: The water pipe (7) is connected to the dispersing chamber via a water spray assembly (17). The water spray assembly (17) comprises a water spray pipe (171) connected to the water pipe (7) and an isolation sleeve (172) fixedly connected to the movable plate (9). The inner diameter of the isolation sleeve (172) is larger than the outer diameter of the water spray pipe (171). The isolation sleeve (172) is fixedly connected to a conical plug (173). When the movable plate (9) is close to the limiting structure, the conical plug (173) blocks the end of the water spray pipe (171). When the water spray pipe (171) and the conical plug (173) are reconnected, the water spray pipe (171) maintains a water spraying state. The bottom of the side wall of the isolation sleeve (172) is provided with a plurality of groups of relative communication holes (174).

7. The high-pressure rotary grouting reinforced cement soil pile anchor deep foundation pit support construction casting machine according to claim 6, characterized in that: The water flow sprayed out by the blocking pipe (12) is sprayed out in a scattered manner, and the bottom of the output pipe (11) is provided with a sleeve cover (18) capable of sleeve-covering the blocking pipe (12).

8. The high-pressure rotary grouting reinforced cement soil pile anchor deep foundation pit support construction casting machine according to claim 5, characterized in that: The outflow port (5) is movably connected to a cover plate (14), the cover plate (14) being in close contact with the end of the outflow port (5) under the action of elastic force, the cover plate (14) opening outwards, the cover plate (14) tilting from top to bottom towards the drill pipe (1), the hinge axis of the cover plate (14) being located at the bottom, an intermediate cavity (19) being provided between the outflow port (5) and the output pipe (11), the water pump supplying water to the blocking pipe (12) at a fixed time to flush the output pipe (11) and the outflow port (5).

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