A device for collecting parameters of jet grouting process

Abstract

The utility model discloses a parameter acquisition device for a rotary jet pile grouting process, which is used for acquiring the real-time resistivity of slurry in a borehole, and solves the technical problem in the prior art that it is difficult to judge whether the grouting in the borehole is uniform or qualified during the rotary jet pile grouting construction. The utility model comprises a casing, which is sleeved on the outer periphery of a grouting pipe close to one end of a nozzle; the outer wall of the grouting pipe is fixedly connected to the inner wall of the casing, and at the same time, it is ensured that the nozzle is exposed outside the casing; the parameter acquisition device for the rotary jet pile grouting process also comprises a first resistivity sensor, which is fixed to the inner wall of the casing, the sensing end of the first resistivity sensor faces the bottom of the borehole and can contact the slurry in the borehole; the signal transmission end of the first resistivity sensor can transmit the detection signal to a resistivity parameter display device, and the resistivity parameter display device can receive the detection signal from the first resistivity sensor and can display the resistivity value measured by the first resistivity sensor in real time.

Description

Technical Field

[0001] The utility model relates to the field of monitoring of a rotary jet pile grouting process, in particular to a rotary jet pile grouting process parameter acquisition device. Background Art

[0002] Jet grouting is a foundation reinforcement technology, which is mainly used to improve the bearing capacity and stability of soft foundations. When performing rotary jet grouting construction, first determine the location of the rotary jet pile according to the design data, lay out the lines, and mark the pile position; then use a drilling rig to drill a hole at the predetermined location to the designed depth; further, install the rotary jet drilling rig and grouting pipe in place, and the grouting pipe is equipped with a nozzle for spraying slurry; at the same time, on the ground, use a mixing system to mix cement, water and other additives in proportion to prepare slurry; start the high-pressure pump to transport the slurry from the slurry storage barrel to the grouting pipe, and the rotating head of the rotary jet drilling rig drives the grouting pipe to rotate. As the grouting pipe rotates, the slurry generated by the high-pressure pump is sprayed onto the borehole wall at high speed through the nozzle. While spraying the slurry, the grouting pipe is controlled by the lifting mechanism and gradually lifted upward. The high-speed sprayed slurry is mixed with the surrounding soil to form a rotary jet pile body. During the rotation and lifting process, the grouting pipe continuously presses the slurry into the pile body until the designed depth is reached. After the grouting is completed, the slurry sprayed into the soil gradually solidifies to form a rotary jet pile body with a certain strength.

[0003] Then, as an important method of reinforcement and management, rotary jet grouting is often affected by multiple factors in practice, such as changes in geological conditions. The unevenness of geological conditions may lead to inconsistent diffusion rates of grouting in different areas, which in turn affects the judgment and control of grouting uniformity and quality. For example, the fluidity of the grouting material will also affect its flow rate and diffusion range in the pipeline, thereby increasing the difficulty of controlling the uniformity and quality of grouting. In addition, there is the adjustment of grouting pressure, etc. Affected by these factors, it is often difficult to judge and control the uniformity and quality of grouting.

[0004] Therefore, during the jet grouting process, effective measures and technical means need to be taken to solve this problem and provide assistance and technical guidance support to ensure the effect of foundation treatment and project quality. Utility Model Content

[0005] The utility model aims to provide a device for collecting parameters of a rotary jet pile grouting process, so as to solve the technical problem in the prior art that when performing rotary jet pile grouting construction, construction personnel do not have sufficient technical reference information, which makes it difficult for construction technicians to judge whether the grouting in the borehole is uniform or of qualified quality.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] The utility model discloses a parameter acquisition device for a rotary jet pile grouting process, which is used for acquiring the real-time resistivity of slurry in a borehole. A grouting pipe is inserted into the borehole, and a nozzle is arranged on the grouting pipe. The grouting pipe can spray concrete slurry to the inner wall of the borehole through the nozzle. The grouting pipe can be driven by a rotary lifting device and continuously rotate and rise from the bottom of the borehole in the borehole.

[0008] The rotary jet pile grouting process parameter collection device comprises a sleeve, which is sleeved on the outer periphery of the grouting pipe near one end of the nozzle;

[0009] The outer wall of the grouting pipe is fixedly connected to the inner wall of the casing, and at the same time ensures that the nozzle is exposed outside the casing;

[0010] The jet grouting process parameter acquisition device further includes a first resistivity sensor, which is fixed to the inner wall of the casing, and a sensing end of the first resistivity sensor faces the bottom of the borehole and can contact the slurry in the borehole;

[0011] The signal transmission end of the first resistivity sensor can transmit the detection signal to the resistivity parameter display device, and the resistivity parameter display device can receive the detection signal from the first resistivity sensor and can display the resistivity value measured by the first resistivity sensor in real time.

[0012] The working principle of the utility model is as follows: the slurry refers to various types of slurry in the borehole. During the construction process in the borehole, there are many types of slurry, including mud formed by mixing the soil of the borehole itself with water, concrete slurry injected from a grouting pipe, and a mixture of mud and concrete slurry, etc. The resistivity of each type of slurry is different. First, the standard reference resistivity value of qualified slurry is determined. When grouting into the borehole, the first resistivity sensor detects the resistivity of the slurry in the borehole in real time from the starting position of the grouting design until the highest position of the grouting design. During the construction process, the construction personnel compare the resistivity value detected in real time with the standard reference resistivity value of the qualified slurry, so that more technical information can be used to assist in judging whether the quality of the slurry in the borehole is qualified. At the same time, according to the change amplitude of the resistivity value measured at different times at the same position, the technical personnel can be assisted in judging whether the slurry at that location is uniform.

[0013] During the grouting process, as the grouting pipe is rotated and pulled up, the first resistivity sensor is rotated and pulled up at the same time, so that the full technical information basis can be obtained to assist in judging whether the slurry in the borehole is uniform or the quality is qualified.

[0014] Preferably, a mounting bracket is fixed to the inner wall of the casing, and the first resistivity sensor is fixedly connected to the mounting bracket. The mounting bracket extends radially inward from the inner wall of the casing, so that a gap is provided between the first resistivity sensor and the inner wall of the casing after the first resistivity sensor is fixed, thereby avoiding interference of the casing with the resistivity measurement.

[0015] Preferably, the outer periphery of the first resistivity sensor is also covered with a first insulating sleeve, and the first insulating sleeve is fixedly connected to the mounting frame, so that only the sensing end of the first resistivity sensor can contact the slurry, thereby improving the detection accuracy.

[0016] Preferably, a sunken mud and water recovery pool is additionally provided around the top of the borehole, the bottom of the mud and water recovery pool is connected to the top of the borehole, a plurality of probes are inserted into the bottom of the mud and water recovery pool, each probe is evenly arranged in the mud and water recovery pool, the detection end of each probe is inserted into the bottom of the mud and water recovery pool, and the other end of each probe is connected to the sensing end of the second resistivity sensor through a wire, and the signal transmission end of the second resistivity sensor can transmit the detection signal to the resistivity parameter display device, and the resistivity parameter display device can receive the detection signal from the second resistivity sensor and can display the resistivity value measured by the second resistivity sensor in real time. In this way, the construction personnel on site can clearly and easily obtain the real-time resistivity value of the mud and water mixture in the mud and water recovery pool. When the construction personnel observe that the resistivity value in the mud and water recovery pool is close to or even the same as the standard reference resistivity value of the qualified slurry, it can be explained that the slurry in the borehole has reached the designed height, and the grouting can be stopped manually at this time.

[0017] Preferably, the probes are arranged in an n×m array, where n is the number of rows and m is the number of columns. This enables a more comprehensive and objective resistivity measurement, which helps assist construction personnel in determining whether the grouting height has reached the set position.

[0018] Preferably, the outer wall of the casing is fixed with a plurality of brackets extending radially outward along the casing, the brackets are evenly distributed, and rollers are fixed at the end of each bracket, each roller can abut against the inner wall of the borehole, and when the grouting pipe rotates and rises, each bracket and roller can maintain the grouting pipe at the center of the borehole, thereby ensuring that when the grouting pipe rotates, the slurry sprayed from the nozzle exerts the same pressure on the inner wall of the borehole.

[0019] Preferably, each of the rollers is a universal wheel, which can increase flexibility during rolling.

[0020] Preferably, the rotary jet pile grouting process parameter acquisition device also includes a third resistivity sensor, the sensing end of the third resistivity sensor extends into a slurry storage barrel, the slurry storage barrel is used to provide slurry for the grouting pipe, the signal transmission end of the third resistivity sensor is connected to a resistivity parameter display device through a wire, the resistivity parameter display device can receive a detection signal from the third resistivity sensor and can display the resistivity value measured by the third resistivity sensor in real time, the resistivity value measured by the third resistivity sensor is the standard reference resistivity value of qualified slurry, which can be more conducive to construction personnel to judge whether the resistivity value measured by the first resistivity sensor is qualified.

[0021] The technical solution of the utility model has the following beneficial effects: the rotary jet pile grouting process parameter acquisition device disclosed by the utility model utilizes the characteristics of the resistivity method to realize non-destructive, simple and rapid detection of the grouting process parameters, reduces the interference and damage of the construction to the on-site environment, is conducive to construction personnel to timely judge the grouting effect through the detection data of the process parameters, reduces the difficulty for construction personnel to judge whether the grouting in the borehole is uniform or whether the quality is qualified, enables construction personnel to timely discover problems such as uneven grouting or leakage, and take corresponding measures to adjust them, thereby improving the quality and efficiency of construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail below with reference to the accompanying drawings, in which:

[0023] Figure 1 The utility model is a schematic diagram of the parameter collection device and installation position of the rotary jet pile grouting process.

[0024] Figure 2 It is a schematic structural diagram of a preferred solution of the parameter collection device for the jet jet pile grouting process of the utility model.

[0025] Figure 3 It is a schematic structural diagram of a preferred solution of the parameter collection device for the jet jet pile grouting process of the utility model.

[0026] Explanation of the reference numerals: 1. first resistivity sensor; 2. mounting frame; 3. clamp; 4. grouting pipe; 5. nozzle; 6. casing; 7. resistivity parameter display device; 8. second resistivity sensor; 9. probe; 11. concrete slurry; 10. mud and water recovery pool; 12. grouting design starting position; 13. grouting design highest position; 14. drilling hole; 15. support frame; 16. roller; 17. third resistivity sensor; 18. slurry storage barrel. DETAILED DESCRIPTION

[0027] In order to better understand the purpose, structure and function of the utility model, the following is a further detailed description of a parameter collection device for a rotary jet pile grouting process of the utility model in conjunction with the accompanying drawings.

[0028] The utility model can be applied in the construction process of rotary jet pile grouting, and solves the technical problem in the prior art that during the rotary jet pile grouting construction, the construction personnel do not have sufficient technical reference information, which makes it difficult for the construction technicians to judge whether the grouting in the borehole is uniform or of qualified quality.

[0029] See also Figure 1 Based on the technical problems solved above, the utility model discloses a parameter acquisition device for a rotary jet pile grouting process, which is used to monitor the real-time resistivity of the slurry in a borehole 14, wherein a grouting pipe 4 is inserted into the borehole 14, and a nozzle 5 is arranged on the grouting pipe 4, and the grouting pipe 4 can spray concrete slurry 11 toward the inner wall of the borehole 14 through the nozzle 5, and the grouting pipe 4 can be driven by a rotary lifting device and continuously rotate and rise from the bottom of the borehole 14 in the borehole 14;

[0030] The rotary jet pile grouting process parameter collection device comprises a sleeve 6, and the sleeve 6 is sleeved on the outer periphery of the grouting pipe 4 near one end of the nozzle 5;

[0031] The outer wall of the grouting pipe 4 is fixedly connected to the inner wall of the casing 6, and at the same time ensures that the nozzle 5 is exposed outside the casing 6;

[0032] The jet grouting process parameter acquisition device further includes a first resistivity sensor 1, which is fixed to the inner wall of the casing 6, and the sensing end of the first resistivity sensor 1 faces the bottom of the borehole 14 and can contact the slurry in the borehole 14;

[0033] The signal transmission end of the first resistivity sensor 1 can transmit the detection signal to the resistivity parameter display device 7, and the resistivity parameter display device 7 can receive the detection signal from the first resistivity sensor 1 and can display the resistivity value measured by the first resistivity sensor 1 in real time.

[0034] The working principle of the utility model is as follows: the slurry refers to various types of slurry in the borehole. During the construction process in the borehole, there are many types of slurry, including mud formed by mixing the soil of the borehole itself with water, concrete slurry 11 injected from the grouting pipe 4, and a mixture of mud and concrete slurry 11, etc. The resistivity of each type of slurry is different; firstly, the standard reference resistivity value of qualified slurry is determined. When grouting is injected into the borehole 14, the first resistivity sensor 1 detects the resistivity of the slurry in the borehole 14 in real time from the grouting design starting position 12 until the grouting design highest position 13. During the construction process, the construction personnel compare the resistivity value detected in real time with the standard reference resistivity value of qualified slurry, so that more technical information can be used to assist in judging whether the quality of the slurry in the borehole 14 is qualified; at the same time, according to the change amplitude of the resistivity value measured at different times at the same position, the technical personnel can be assisted in judging whether the slurry at that location is uniform.

[0035] During the grouting process, as the grouting pipe 4 is rotated and pulled up, the first resistivity sensor 1 is rotated and pulled up at the same time, so that the full technical information basis can be obtained to assist in judging whether the slurry in the borehole 14 is uniform or of qualified quality.

[0036] Specifically, the outer wall of the grouting pipe 4 is fixedly connected to the inner wall of the casing 6 via a clamp 3 , and the clamp 3 is fixed to the inner wall of the casing 6 .

[0037] Specifically, the signal transmission end of the first resistivity sensor 1 transmits the detection signal to the resistivity parameter display device 7 by wired transmission or wireless transmission.

[0038] As a preference, see Figure 1 A mounting bracket 2 is fixed to the inner wall of the casing 6, and the first resistivity sensor 1 is fixedly connected to the mounting bracket 2. The mounting bracket 2 extends radially inward from the inner wall of the casing 6, so that there is a gap between the first resistivity sensor 1 and the inner wall of the casing 6 after being fixed, thereby avoiding interference of the casing 6 on the resistivity measurement.

[0039] Preferably, the outer periphery of the first resistivity sensor 1 is also covered with a first insulating sleeve 6, and the first insulating sleeve 6 is fixedly connected to the mounting frame 2, so that only the sensing end of the first resistivity sensor 1 can contact the slurry, thereby improving the detection accuracy.

[0040] In the conventional jet grouting process, the grouting height is generally indirectly judged by the flow rate and time of the injected slurry to determine whether it has reached the designed height. However, due to changes in geological conditions, the fluidity of the grouting material, the adjustment of the grouting pressure and other factors, it may also be difficult to judge and accurately control the grouting height. Therefore, in order to judge and more accurately control the grouting height, it is preferred to refer to Figure 2 A sunken mud and water recovery pool 10 is additionally provided around the top of the borehole 14. The bottom of the mud and water recovery pool 10 is connected to the top of the borehole 14. A plurality of probes 9 are inserted at the bottom of the mud and water recovery pool 10. Each probe 9 is evenly arranged in the mud and water recovery pool 10. The detection end of each probe 9 is inserted into the bottom of the mud and water recovery pool 10. The other end of each probe 9 is connected to the sensing end of the second resistivity sensor 8 through a wire. The signal transmission end of the second resistivity sensor 8 can transmit the detection signal to the resistivity parameter display device 7. The resistivity parameter display device 7 can receive the detection signal from the second resistivity sensor 8 and can display the resistivity value measured by the second resistivity sensor 8 in real time. In this way, the construction personnel on site can clearly and easily obtain the real-time resistivity value of the mud and water mixture in the mud and water recovery pool 10. When the construction personnel observe that the resistivity value in the mud and water recovery pool 10 is close to or even the same as the standard reference resistivity value of the qualified slurry, it can be explained that the slurry in the borehole 14 has reached the design height, and the grouting can be stopped manually at this time.

[0041] Specifically, the signal transmission end of the second resistivity sensor 8 transmits the detection signal to the resistivity parameter display device 7 by wired transmission or wireless transmission.

[0042] Preferably, the probes 9 are arranged in an n×m array, where n is the number of rows and m is the number of columns. This enables a more comprehensive and objective resistivity measurement, which helps assist construction personnel in determining whether the grouting height has reached the set position.

[0043] As one embodiment of the n×m array, the distance between two adjacent probes 9 is 20 cm, the vertical distance between each row of probes 9 and the pile body is 50 cm, and each row of probes 9 is gathered in a signal transmission line. The two signal transmission lines are connected to the second resistivity sensor 8, and the real-time data is transmitted to the resistivity parameter display device 7 through the second resistivity sensor 8.

[0044] Since the casing 6 is installed on the grouting pipe 4, the grouting pipe 4 may deviate from the center of the borehole 14 due to unbalanced force. Therefore, the above solution is optimized as a preferred solution. Figure 3The outer wall of the casing 6 is fixed with a plurality of brackets extending radially outward along the casing 6, and the brackets are evenly distributed. A roller 16 is fixed to the end of each bracket, and each roller 16 can abut against the inner wall of the borehole 14. When the grouting pipe 4 rotates and rises, each bracket and roller 16 can maintain the grouting pipe 4 at the center of the borehole 14, thereby ensuring that when the grouting pipe 4 rotates, the slurry sprayed from the nozzle 5 has the same pressure on the inner wall of the borehole 14.

[0045] Since the real-time measurement value of the resistivity sensor is often affected by the temperature or humidity of the measurement environment, in order to more accurately determine whether the resistivity value measured by the first resistivity sensor 1 is qualified, it is preferred to refer to Figure 1 The rotary jet pile grouting process parameter acquisition device also includes a third resistivity sensor 17. The sensing end of the third resistivity sensor 17 extends into a slurry storage barrel 18. The slurry storage barrel 18 is used to provide slurry for the grouting pipe 4. The signal transmission end of the third resistivity sensor is connected to the resistivity parameter display device 7 through a wire. The resistivity parameter display device 7 can receive the detection signal from the third resistivity sensor 17 and can display the resistivity value measured by the third resistivity sensor 17 in real time. The resistivity value measured by the third resistivity sensor 17 is the standard reference resistivity value of qualified slurry, which can be more conducive to the construction personnel to judge whether the resistivity value measured by the first resistivity sensor is qualified.

[0046] The application process of the utility model in construction is: when the first resistivity sensor 1 is located at the bottom position of the rotary jet pile grouting and the starting position 12 of the grouting design, the resistivity is measured in real time and displayed on the resistivity parameter display device 7, and the construction personnel analyze the data to analyze and judge the grouting quality. As the grouting continues, the position of the first resistivity sensor 1 in the casing 6 gradually rises until the first resistivity sensor 1 rises to the highest position 13 of the grouting design. During this period, the resistivity parameter display device 7 can display the resistivity in the borehole measured by the first resistivity sensor 1 during the whole process.

[0047] The construction personnel judge the quality of the slurry in the borehole in the following way: during the grouting process, the concrete slurry 11 will be accumulated and grouted through the grouting pipe 4 from the grouting design starting position 12, and the concrete slurry 11 will gradually discharge the residual mud in the borehole 14 upward. In the process of discharging the residual mud, the mud and the concrete slurry 11 will be mixed. At this time, the grouting quality does not meet the actual requirements. Therefore, the resistivity monitored by the first resistivity sensor 1 in the casing 6 will fluctuate. When the bottom mud and the mud mixture are discharged, the data monitored by the first resistivity sensor 1 tends to be stable and approximately equal to the standard reference resistivity value of qualified slurry.

[0048] After meeting the grouting quality requirements, the construction personnel operate the rotary jet grouting device to start rotary jet grouting, and the positions of the casing 6 and the first resistivity sensor 1 gradually rise. During this process, the construction personnel always observe the real-time resistivity data monitored by the first resistivity sensor 1 and the second resistivity sensor 8; if the construction personnel find that the resistivity value measured by the first resistivity sensor 1 does not meet the standard reference resistivity value of qualified slurry, then the grouting should be stopped to adjust the slurry mix ratio until the slurry quality is qualified and continue grouting. If the construction personnel find that the resistivity value measured by the second resistivity sensor 8 is gradually approaching the standard reference resistivity value of qualified slurry, and the approach speed is accelerating, it means that the grouting height requirement is about to be reached. At this time, the construction personnel should prepare to stop grouting in advance. If the resistivity value measured by the second resistivity sensor 8 is the same as the standard reference resistivity value of qualified slurry, it means that the grouting height requirement has been reached, and the construction personnel should immediately stop the grouting operation.

[0049] The use of the device for collecting parameters during the grouting process of a jet grouting pile disclosed by the utility model has the following technical effects:

[0050] The rotary jet pile grouting process parameter acquisition device disclosed by the utility model utilizes the characteristics of the resistivity method to realize non-destructive, simple and rapid detection of the grouting process parameters, reduces the interference and damage of the construction to the on-site environment, is conducive to the construction personnel to judge the grouting effect in time through the detection data of the process parameters, reduces the difficulty for the construction personnel to judge whether the grouting in the borehole is uniform or the quality is qualified, enables the construction personnel to discover the problems such as uneven grouting or leakage in time, and take corresponding measures to adjust them, thereby improving the quality and efficiency of the construction.

[0051] The resistivity method uses the resistivity characteristics of underground soil or rock to infer the situation of underground structures by measuring the speed and path of electric current propagation underground. It is a non-invasive monitoring method that does not require large-scale excavation or drilling on the surface or underground. It can be monitored by laying electrodes on the ground. The jet jet pile grouting process parameter acquisition device disclosed in the utility model has the advantages of high accuracy, real-time feedback, high reliability and stability, which assists construction personnel to promote the grouting effect to achieve the expected goal, which is conducive to ensuring the smooth progress of the project.

[0052] It can be understood that the present invention is described by some specific embodiments / embodiments, and those skilled in the art are aware that various changes or equivalent substitutions can be made to these features and specific embodiments / embodiments without departing from the spirit and scope of the present invention. Under the guidance of the present invention, these features and specific embodiments / embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of the present invention. The specific embodiments / embodiments described in the present invention are part of the specific embodiments / embodiments of the present invention, rather than all of the specific embodiments / embodiments. The components of the specific embodiments / embodiments of the present invention generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the specific embodiments / embodiments of the present invention provided in the drawings is not intended to limit the scope of the utility model claimed for protection, but only represents the selected specific embodiments / embodiments of the present invention. Therefore, the present invention is not limited by the specific embodiments / embodiments disclosed herein, and all other specific embodiments / embodiments obtained by ordinary technicians in the field without creative work based on the specific embodiments / embodiments in the present invention belong to the scope of protection of the present invention.

Claims

1. A parameter collection device for a jet grouting process, used for collecting the real-time resistivity of slurry in a borehole, wherein a grouting pipe is inserted into the borehole, and a nozzle is arranged on the grouting pipe. The grouting pipe can spray concrete slurry toward the inner wall of the borehole through the nozzle, and the grouting pipe can be driven by a rotary lifting device and continuously rotate and rise from the bottom of the borehole in the borehole; It is characterized in that The rotary jet pile grouting process parameter collection device comprises a sleeve, which is sleeved on the outer periphery of the grouting pipe near one end of the nozzle; the outer wall of the grouting pipe is fixedly connected to the inner wall of the sleeve, and at the same time ensures that the nozzle is exposed outside the sleeve; The rotary jet pile grouting process parameter acquisition device also includes a first resistivity sensor, which is fixed to the inner wall of the casing, and the sensing end of the first resistivity sensor faces the bottom of the borehole and can contact the slurry in the borehole; the signal transmission end of the first resistivity sensor can transmit the detection signal to the resistivity parameter display device, and the resistivity parameter display device can receive the detection signal from the first resistivity sensor and can display the resistivity value measured by the first resistivity sensor in real time.

2. The device for collecting parameters of the jet grouting process according to claim 1, characterized in that: A mounting frame is fixed to the inner wall of the casing, the first resistivity sensor is fixedly connected to the mounting frame, and the mounting frame extends radially inward from the inner wall of the casing, so that a gap exists between the first resistivity sensor and the inner wall of the casing after being fixed.

3. The device for collecting parameters of the jet grouting process according to claim 2, characterized in that: The outer periphery of the first resistivity sensor is also covered with a first insulating sleeve, and the first insulating sleeve is fixedly connected to the mounting frame.

4. The device for collecting parameters of the jet grouting process according to claim 1, characterized in that: A recessed mud and water recovery pool is additionally provided around the top of the borehole, the bottom of the mud and water recovery pool is connected to the top of the borehole, a plurality of probes are inserted into the bottom of the mud and water recovery pool, the probes are evenly arranged in the mud and water recovery pool, the detection end of each probe is inserted into the bottom of the mud and water recovery pool, the other end of each probe is respectively connected to the sensing end of the second resistivity sensor through a wire, the signal transmission end of the second resistivity sensor can transmit the detection signal to the resistivity parameter display device, the resistivity parameter display device can receive the detection signal from the second resistivity sensor and can display the resistivity value measured by the second resistivity sensor in real time.

5. The device for collecting parameters of the jet grouting process according to claim 4 is characterized in that: The probes are arranged in an n×m array, where n is the number of rows and m is the number of columns.

6. The device for collecting parameters of the jet grouting process according to claim 1 or 4, characterized in that: The outer wall of the casing is fixed with multiple brackets extending radially outward along the casing, and the brackets are evenly distributed. Rollers are fixed to the ends of each bracket, and each roller can abut against the inner wall of the borehole. When the grouting pipe rotates and rises, each bracket and roller can maintain the grouting pipe at the center of the borehole.

7. The device for collecting parameters of the jet grouting process according to claim 6, characterized in that: Each of the rollers is a universal wheel.

8. The device for collecting parameters of the jet grouting process according to any one of claims 1 or 4, characterized in that: The rotary jet pile grouting process parameter collection device also includes a third resistivity sensor, the sensing end of the third resistivity sensor extends into a slurry storage barrel, the slurry storage barrel is used to provide slurry for the grouting pipe, the signal transmission end of the third resistivity sensor is connected to a resistivity parameter display device through a wire, the resistivity parameter display device can receive a detection signal from the third resistivity sensor and can display the resistivity value measured by the third resistivity sensor in real time, the resistivity value measured by the third resistivity sensor is the standard reference resistivity value of qualified slurry.

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