Rock pipe jacking self-suction type pipe bottom sediment cleaning device and cleaning method

Abstract

The application discloses a rock pipe-jacking self-suction pipe bottom sediment cleaning device and a cleaning method, which comprises a total sediment cleaning pipe, a pump station and a sediment deposition tank which are sequentially connected, and a controller. At least one pipe joint is arranged on the total sediment cleaning pipe, and the pipe joint is connected with a sediment cleaning branch pipe, so that the total sediment cleaning pipe and the sediment cleaning branch pipe are communicated. A valve and a first solid flowmeter are arranged on the sediment cleaning branch pipe, the valve is used for controlling opening and closing of the sediment cleaning branch pipe, and the first solid flowmeter is used for monitoring sediment flow in the sediment cleaning branch pipe. The pump station comprises a self-suction pump and a second solid flowmeter, is used for sucking the pipe bottom sediment of the sediment cleaning branch pipe into the sediment cleaning branch pipe and recycling the pipe bottom sediment through the sediment deposition tank, and the second solid flowmeter is used for monitoring the sediment flow in the pump station. The controller is electrically connected with the valve, the first solid flowmeter and the second solid flowmeter. The application monitors the whole sediment cleaning process through the controller, adjusts the valve opening degree according to real-time data of the first solid flowmeter and the second solid flowmeter, improves the sediment cleaning efficiency, reduces the personnel demand on the construction site, and improves the construction safety and efficiency.

Description

Technical Field

[0001] This invention relates to the field of pipe jacking construction technology, and in particular to a self-priming pipe bottom sediment cleaning device and cleaning method for rock pipe jacking. Background Technology

[0002] Rock jacking technology, as a highly efficient trenchless construction method, is widely used due to its minimal environmental impact and high construction efficiency. In long-distance rock jacking construction, this technology often needs to traverse complex geological layers, such as moderately weathered sandy mudstone and strongly weathered argillaceous sandstone. Rock debris in these strata can easily enter the pipe wall during excavation, forming slag buildup. Slag buildup formation is influenced by various factors, including over-excavation, improper management of excavated materials, and inadequate slurry injection. For example, over-excavation can cause excavated materials to enter the pipe wall through gaps, while insufficient slurry injection pressure or quantity can affect the formation of the slurry jacket, further increasing the risk of slag buildup.

[0003] Traditional methods for handling slag buildup have significant shortcomings. These methods often require downtime, are inefficient, and not only severely impact construction progress but also increase construction costs and risks. Particularly in rock jacking construction, if slag buildup is not cleaned promptly, it can cause pipe sections to jam, preventing normal pipe jacking and resulting in significant delays and economic losses for the entire project.

[0004] Therefore, there is an urgent need to provide a solution for a self-priming pipe bottom sediment cleaning device and cleaning method for rock jacking pipes. Summary of the Invention

[0005] To address the above problems, the present invention provides a self-priming pipe bottom sediment cleaning device and method for rock jacking pipes. By remotely controlling and precisely controlling the sediment cleaning process, it solves the problems of low efficiency, impact on construction progress and cost of traditional sediment treatment methods.

[0006] According to a first aspect of the technical solution of the present invention, a self-priming bottom sludge cleaning device for rock jacking is provided, comprising: a sludge cleaning main pipe, a pump station and a sludge sedimentation tank connected in sequence, and a controller;

[0007] The main slag removal pipe is provided with at least one pipe section, which is connected to the slag removal branch pipe, so that the main slag removal pipe and the slag removal branch pipe are connected.

[0008] The slag removal branch pipe is equipped with a valve and a first solid flow meter. The valve is used to control the opening and closing of the slag removal branch pipe, and the first solid flow meter is used to monitor the flow rate of slag in the slag removal branch pipe.

[0009] The pumping station includes a self-priming pump and a second solid flow meter, used to draw the slag accumulated at the bottom of the slag removal pipe through the slag removal pipe and recover it through the slag sedimentation tank; the second solid flow meter is used to monitor the slag flow rate in the pumping station.

[0010] The controller is electrically connected to the valve, the first solid flow meter, and the second solid flow meter.

[0011] In the above scheme, the pump station is also equipped with a pressure sensor;

[0012] The controller is electrically connected to the pressure sensor and the self-priming pump.

[0013] In the above scheme, the bottom of the slag cleaning branch pipe is provided with a reserved slag cleaning port, and the slag cleaning branch pipe and the reserved slag cleaning port are connected by a first flange.

[0014] In the above scheme, the slag removal branch pipe is a detachable structure, and the slag removal branch pipe is connected to the slag removal main pipe through a second flange.

[0015] In the above scheme, multiple pipe sections are evenly distributed on the slag removal main pipe.

[0016] In the above scheme, the valve is an electric valve.

[0017] In the above scheme, the sludge sedimentation tank includes a sludge grinder, a conveyor belt, and a storage tank;

[0018] The slag grinding mill is connected to the pump station;

[0019] The conveyor belt connects the slag grinder and the storage tank.

[0020] According to a second aspect of the present invention, a cleaning method for a rock jacking self-priming pipe bottom sediment cleaning device as described in any of the above-described solutions is provided, comprising:

[0021] S1. Start the device and initialize the controller;

[0022] S2. Open the valve and the self-priming pump to suck the bottom sludge into the sludge cleaning branch pipe, and then into the sludge sedimentation tank through the sludge cleaning main pipe and the pump station.

[0023] S3. The sludge sedimentation tank grinds and stores the sludge.

[0024] In the above scheme, step S2 includes:

[0025] The controller receives flow signals from the first solid flow meter and the second solid flow meter; if the sludge flow of the first solid flow meter or the second solid flow meter is less than the flow threshold, the opening of the valve is increased; if the sludge flow of the first solid flow meter or the second solid flow meter is greater than the flow threshold, the opening of the valve is decreased until it is closed; if the sludge flow of the first solid flow meter or the second solid flow meter is equal to the flow threshold, the opening of the valve remains unchanged.

[0026] The self-priming pump is equipped with a pressure sensor. The controller is electrically connected to the pressure sensor and the self-priming pump. The controller receives the pressure signal from the pressure sensor. If the pressure of the pressure sensor is greater than the pressure threshold, the self-priming pump reduces its suction force. If the pressure of the pressure sensor is less than the pressure threshold, the self-priming pump increases its suction force. If the pressure of the pressure sensor is equal to the pressure threshold, the suction force of the self-priming pump remains unchanged.

[0027] In the above scheme, in step S3, the sludge sedimentation tank grinds the sludge and conveys it to the storage tank via a conveyor belt.

[0028] The beneficial effects of this invention are:

[0029] This invention discloses a self-priming pipe bottom sediment cleaning device and method for rock jacking construction. The entire cleaning process is monitored by a controller, and the valve opening is adjusted based on real-time data from the first and second solid flow meters, improving cleaning efficiency, reducing on-site personnel requirements, and enhancing construction safety and efficiency. Through the coordinated operation of the self-priming pump and pressure sensor in the pump station, the suction force can be precisely controlled based on real-time data during the cleaning process, effectively avoiding unnecessary energy waste and equipment wear. Furthermore, the suction force within the pipe can be increased after the valve is closed, further enhancing cleaning efficiency. The cleaning branch pipes feature a detachable design, avoiding the limitations of traditional cleaning methods that struggle to adapt to varying geological conditions and construction needs. The location and number of cleaning ports can be flexibly adjusted according to actual conditions, ensuring a smooth cleaning process and making it suitable for rock jacking construction under various complex geological conditions. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0031] Figure 1This is a schematic diagram of the overall structure of the self-priming pipe bottom sediment cleaning device for rock jacking disclosed in an embodiment of the present invention;

[0032] Figure 2 This is a schematic diagram of the pump station structure of the self-priming pipe bottom sediment cleaning device for rock jacking disclosed in an embodiment of the present invention;

[0033] Figure 3 This is a schematic diagram of the sludge sedimentation tank of the self-priming pipe bottom sludge cleaning device for rock jacking disclosed in an embodiment of the present invention;

[0034] Figure 4 This is a schematic diagram of the flange structure of the self-priming pipe bottom sediment cleaning device for rock jacking disclosed in an embodiment of the present invention;

[0035] Figure 5 This is a schematic diagram of the valve structure of the self-priming bottom sediment cleaning device for rock jacking disclosed in an embodiment of the present invention.

[0036] Among them, 1-controller; 2-pump station; 3-slag grinding mill; 4-pipe jacking head; 5-slag cleaning main pipe; 6-slag cleaning branch pipe; 7-valve; 8-first solid flow meter; 9-slag accumulation at the bottom of the pipe; 10-control cable; 11-connection port; 12-conveyor belt; 13-storage tank; 14-reserved slag cleaning port; 201-pressure sensor; 202-second solid flow meter; 203-driven screw; 204-driving screw; 205-motor; 301-variable speed vibrator; 302 303-Small bevel gear; 304-Large bevel gear; 305-Fixed cone; 306-Crushing chamber; 307-Spherical bearing; 308-Eccentric sleeve; 309-Main shaft; 701-Electromagnetic coil; 702-Moving iron core; 703-Signal receiver; 704-Spring; 705-Valve cover; 706-Valve body; 1101-Connecting flange; 1102-Bolt; 1103-Nut; 1104-Compensating pad; 1105-Positioning groove; 1106-Flange hole.

[0037] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0038] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this disclosure as detailed in the appended claims.

[0039] The terms "first," "second," etc., used in this disclosure are for distinguishing similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that the embodiments of this disclosure described herein can be implemented, for example, in orders other than those illustrated or described herein.

[0040] Furthermore, the terms “comprising” and “having”, and any variations thereof, are intended to cover non-exclusive inclusion, such that a process, method, system, product, or apparatus that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or apparatus.

[0041] Multiple, including two or more.

[0042] And / or, it should be understood that, for the purposes of this disclosure, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone.

[0043] like Figures 1-5 As shown, one embodiment of the technical solution of the present invention provides a self-priming bottom sludge cleaning device for rock jacking pipes, comprising: a sludge cleaning main pipe 5, a pump station 2 and a sludge sedimentation tank connected in sequence, and a controller 1.

[0044] The main slag removal pipe 5 is equipped with at least one pipe section, which is connected to the slag removal branch pipe 6, thus connecting the main slag removal pipe 5 and the slag removal branch pipe 6. The slag removal branch pipe 6 is equipped with a valve 7 and a first solid flow meter 8. The valve 7 is used to control the opening and closing of the slag removal branch pipe 6, and the first solid flow meter 8 is used to monitor the flow rate of slag in the slag removal branch pipe 6. The pump station 2 includes a self-priming pump and a second solid flow meter 202, which is used to suck the slag 9 at the bottom of the slag removal branch pipe 6 through the slag removal branch pipe 6 and recover it through the slag sedimentation tank. The second solid flow meter 202 is used to monitor the flow rate of slag in the pump station 2. The controller 1 is electrically connected to the valve 7, the first solid flow meter 8, and the second solid flow meter 202.

[0045] Specifically, controller 1 receives flow signals from the first solid flow meter 8 and the second solid flow meter 202. If the sludge flow rate of the first solid flow meter 8 or the second solid flow meter 202 is less than the flow threshold, the opening of valve 7 is increased; if the sludge flow rate of the first solid flow meter 8 or the second solid flow meter 202 is greater than the flow threshold, the opening of valve 7 is decreased until it is closed. Adjusting the opening of valve 7 based on real-time data from the first solid flow meter 8 and the second solid flow meter 202 improves sludge removal efficiency, reduces the need for personnel on the construction site, and improves construction safety and efficiency.

[0046] In this preferred embodiment, pump station 2 is also equipped with a pressure sensor 201; controller 1 is electrically connected to pressure sensor 201 and self-priming pump. Pressure sensor 201 is used to monitor the pressure value of the slag suction pipe of pump station 2. If the pressure in the slag suction pipe is greater than a set threshold, controller 1 controls the self-priming pump to reduce suction; if the pressure in the slag suction pipe is less than the set threshold, controller 1 controls the self-priming pump to increase suction. Through the coordinated work of self-priming pump and pressure sensor 201 in pump station 2, the suction force can be precisely controlled based on real-time data during the slag removal process, effectively avoiding unnecessary energy waste and equipment wear. Furthermore, the suction force in the pipe can be increased after valve 7 is closed, further improving slag removal efficiency. The total amount of slag and the slag suction speed can also be measured by the first solid flow meter 8 and the second solid flow meter 202, providing a reference for setting the self-priming pump.

[0047] Specifically, the self-priming pump includes a motor 205, a driven screw 203, and a driving screw 204. Throughout the slag suction process, the suction direction follows... Figure 2 As shown by the middle arrow, the rotation speed of motor 205 can control the suction force of slag suction, while pressure sensor 201 is used to monitor the pressure of slag suction pipe. When the pressure of slag suction pipe exceeds the set value, an alarm is triggered to prevent pipe rupture. If the pipe pressure is too high, the rotation speed of motor 205 can be reduced or stopped. If the pipe pressure is too low, the rotation speed of motor 205 can be increased.

[0048] The bottom of the slag removal pipe 6 is provided with a reserved slag removal port 14, and there is a connection port 11 between the slag removal pipe 6 and the reserved slag removal port 14, which is connected by a first flange. The accumulated slag is sucked in through the reserved slag removal port 14.

[0049] In this preferred embodiment, the slag removal branch pipe 6 is a detachable structure, and it is connected to the slag removal main pipe 5 via a second flange. Multiple pipe sections are evenly distributed on the slag removal main pipe 5, thus allowing for the installation of one or more slag removal branch pipes 6. This avoids the difficulty of adapting to different geological conditions and construction requirements using traditional cleaning methods. The location and number of slag removal branch pipes 6 can be flexibly adjusted according to actual conditions, enabling targeted slag removal by area, ensuring the smooth progress of the slag removal process, and making it suitable for rock jacking construction under various complex geological conditions.

[0050] Specifically, the first and second flanges include a connecting flange 1101, bolts 1102, nuts 1103, and a compensating gasket 1104. One end of the slag removal branch pipe 6, the reserved slag removal port 14, and the slag removal main pipe 5 is equipped with a connecting flange 1101. The connecting flange 1101 also has at least eight flange holes 1106 for connection. A circular compensating gasket 1104 is installed outside the flange holes 1106. The compensating gasket 1104 has a through hole in its center, and its circumference has a number of positioning grooves 1105 equal to the number of flange holes 1106 on the connecting flange 1101. The diameter of these positioning grooves 1105 is slightly larger than the diameter of the bolts 1102 so that the bolts 1102 can pass through smoothly. During connection, the bolts 1102 pass sequentially through the flange holes 1106 of the connecting flange 1101 and the positioning grooves 1105 of the compensating gasket 1104, and finally connect with the nuts 1103, thus tightly connecting all parts together.

[0051] In this preferred embodiment, valve 7 is an electric valve, comprising an electromagnetic coil 701, a moving iron core 702, a signal receiver 703, a spring 704, a valve cover 705, and a valve body 706. The signal receiver 703 receives control commands from the controller 1. Subsequently, the electromagnetic coil 701 controls the opening and closing of valve 7 according to the commands to regulate the flow and pressure of sludge. Specifically, when the electromagnetic coil 701 is energized, it generates a magnetic field that attracts the moving iron core 702 to overcome resistance such as the spring 704, thus opening valve 7. When the power is off, the magnetic field disappears, the moving iron core 702 resets under the action of the spring 704, and valve 7 closes. Valve cover 705 and valve body 706 are fastened together by bolts 1102, forming a tight sealing structure to ensure the sealing performance of valve 7 when closed.

[0052] The slag settling tank includes a slag grinder 3, a conveyor belt 12, and a storage tank 13; the slag grinder 3 is connected to the pump station 2; the conveyor belt 12 connects the slag grinder 3 and the storage tank 13. Specifically, the slag first enters the crushing chamber 306 of the slag grinder 3. By starting the variable speed vibrator 301, the small bevel gear 302 and the large bevel gear 303 are driven to rotate, which in turn causes the moving cone 305 to vibrate, thus achieving effective grinding of the slag in the crushing chamber 306. The fixed cone 304 works in conjunction with the moving cone 305, together forming part of the crushing chamber 306. During the grinding process, the vibration of the moving cone 305 causes the gap between it and the fixed cone 304 to change continuously, thereby effectively grinding the slag entering the crushing chamber 306 into particles of the required particle size. The spherical bearing 307 connects the moving cone 305 and the main shaft 309, can withstand large radial and axial loads, and has a certain self-aligning capability. The mill maintains stable operation even under complex and variable loads, ensuring the overall performance and grinding effect of the slag grinder 3. An eccentric sleeve 308 is mounted on the main shaft 309 and connected to the variable-speed vibrator 301. When the variable-speed vibrator 301 starts, it drives the eccentric sleeve 308 to generate periodic vibrations, which in turn drive the moving cone 305 to vibrate. The design of the eccentric sleeve 308 allows for precise control of the vibration trajectory and frequency of the moving cone 305, thereby achieving precise adjustment of the slag grinding effect. The main shaft 309 transmits the power of the variable-speed vibrator 301 to the moving cone 305 and supports the weight of the entire crushing chamber 306 and the moving cone 305. By adjusting the frequency and vibration duration of the variable-speed vibrator 301, the particle size of the ground slag can be precisely controlled to meet the needs of subsequent reuse. The ground slag is then conveyed to the storage tank 13 via the conveyor belt 12 for storage.

[0053] In this embodiment, the end of the slag removal main pipe 5 is also provided with a pipe jacking head 4, which is used to advance the pipe during rock pipe jacking construction. The pipe section and the slag removal branch pipe are located behind the pipe jacking head 4, forming a pipe jacking construction pipeline.

[0054] In this embodiment, controller 1 is located in the data control console. The data control console mainly includes a central processing unit, a data processing terminal, controller 1, a display system, and an alarm system. The central processing unit plays a core role in the data control console, responsible for parameter setting, process monitoring, and flexible control of valve 7 to adapt to different construction needs. It also supports switching between automatic and manual slag removal modes, processes sensor data to adjust strategies in real time, and issues alarms to ensure efficient and stable operation of slag removal. The data processing terminal monitors the progress of the entire slag removal process and related data changes in real time. The remote control console can comprehensively control the entire slag removal process. The display system is used by staff to set parameters, valve 7 opening and closing, and slag removal mode during the slag removal process, and monitors the entire slag removal process and data changes. The equipment control program controls the entire slag removal process. According to actual needs, the valve 7 opening and closing can be flexibly adjusted to regulate the position and quantity of slag removal, adapting to different geological conditions and construction needs. Slag removal is divided into automatic and manual slag removal functions. Automatic slag removal mode is selected for general geological conditions, while manual grouting is required when crossing fractured strata or water-rich strata, depending on construction needs, for selective slag removal in a single area.

[0055] In this embodiment, controller 1 and pump station 2, and controller 1 and valve 7 are electrically connected via control cable 10.

[0056] According to a second aspect of the technical solution of the present invention, a cleaning method for the rock jacking self-priming pipe bottom sediment cleaning device of the above embodiments is provided, comprising:

[0057] S1. Start the device and initialize controller 1;

[0058] S2. Open valve 7 and self-priming pump to suck the bottom sludge 9 into the sludge cleaning branch pipe 6, and then into the sludge sedimentation tank through the sludge cleaning main pipe 5 and pump station 2.

[0059] S3, the sludge sedimentation tank grinds and stores the sludge.

[0060] Step S1 includes: ensuring the normal operation of controller 1 and pump station 2, and controller 1 starting to monitor the initial status of valve 7, first solid flow meter 8, second solid flow meter 202, pressure sensor 201 and self-priming pump.

[0061] Step S2 includes:

[0062] The controller 1 receives flow signals from the first solid flow meter 8 and the second solid flow meter 202; if the sludge flow of the first solid flow meter 8 or the second solid flow meter 202 is less than the flow threshold, the opening of the valve 7 is increased; if the sludge flow of the first solid flow meter 8 or the second solid flow meter 202 is greater than the flow threshold, the opening of the valve 7 is decreased until it is closed; if the sludge flow of the first solid flow meter 8 or the second solid flow meter 202 is equal to the flow threshold, the opening of the valve 7 remains unchanged.

[0063] The self-priming pump is equipped with a pressure sensor 201. The controller 1 is electrically connected to the pressure sensor 201 and the self-priming pump. The controller 1 receives the pressure signal from the pressure sensor 201. If the pressure of the pressure sensor 201 is greater than the pressure threshold, the suction force of the self-priming pump decreases; if the pressure of the pressure sensor 201 is less than the pressure threshold, the suction force of the self-priming pump increases; if the pressure of the pressure sensor 201 is equal to the pressure threshold, the suction force of the self-priming pump remains unchanged. Preferably, the suction force of the self-priming pump is adjusted by adjusting the rotational speed of the motor 205.

[0064] In step S3, the sludge in the sedimentation tank is ground and conveyed to the storage tank 13 via conveyor belt 12.

[0065] The method further includes: when the sludge flow rate of both the first solid flow meter 8 and the second solid flow meter 202 is less than the flow threshold, the sludge removal is completed, valve 7 is closed, and the sludge suction operation is stopped. At the same time, the suction force in the pipeline can be increased after valve 7 is closed. After all the sludge has been transferred to the storage tank 13, the pump station 2 and controller 1 are shut down, and all components are maintained and cleaned.

[0066] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0067] The sequence numbers of the above embodiments of the present invention are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0068] Through the above description of the embodiments, those skilled in the art can clearly understand that the above implementation methods can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal (which may be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in the various embodiments of the present invention.

[0069] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention without departing from the spirit and scope of the claims. All of these forms are within the protection scope of the present invention.

Claims

1. A rock pipe jacking self-suction type pipe bottom sediment cleaning method, characterized in that, The method comprises the following steps: S1, starting the device to initialize the controller; S2, opening the valve and the self-priming pump to suck the pipe bottom slag into the slag removal branch pipe, then through the slag removal main pipe and the pump station into the slag deposition tank; S3, the slag deposition tank grinds and stores the slag; Step S2 comprises: The controller receives the flow signals of the first and second solid flow meters; if the slag flow of the first or second solid flow meter is less than the flow threshold, the opening of the valve is increased; if the slag flow of the first or second solid flow meter is greater than the flow threshold, the opening of the valve is reduced until it is closed; if the slag flow of the first or second solid flow meter is equal to the flow threshold, the opening of the valve remains unchanged; The self-priming pump is provided with a pressure sensor, and the controller is electrically connected with the pressure sensor and the self-priming pump; the controller receives the pressure signal of the pressure sensor; if the pressure of the pressure sensor is greater than the pressure threshold, the self-priming pump reduces the suction force; if the pressure of the pressure sensor is less than the pressure threshold, the self-priming pump increases the suction force; if the pressure of the pressure sensor is equal to the pressure threshold, the suction force of the self-priming pump remains unchanged; The cleaning device for realizing the self-priming pipe bottom slag cleaning method of rock pipe comprises a controller, a slag removal main pipe, a pump station and a slag deposition tank which are sequentially connected; The slag removal main pipe is provided with at least one pipe joint, and the pipe joint is connected with a slag removal branch pipe to connect the slag removal main pipe and the slag removal branch pipe; The slag removal branch pipe is provided with a valve and a first solid flow meter; the valve is used to control the opening and closing of the slag removal branch pipe; and the first solid flow meter is used to monitor the slag flow in the slag removal branch pipe; The pump station comprises a self-priming pump and a second solid flow meter, which are used to suck the pipe bottom slag of the slag removal branch pipe through the slag removal branch pipe and recycle the pipe bottom slag through the slag deposition tank; and the second solid flow meter is used to monitor the slag flow in the pump station; The controller is electrically connected with the valve, the first solid flow meter and the second solid flow meter.

2. The rock jacking pipe self-suction type pipe bottom sediment cleaning method according to claim 1, characterized by, The bottom of the slag removal branch pipe is provided with a reserved slag removal port, and the slag removal branch pipe and the reserved slag removal port are connected through a first flange.

3. The rock jacking pipe self-suction type pipe bottom sediment cleaning method according to claim 1, characterized by, The slag removal branch pipe is of a detachable structure, and the slag removal branch pipe is connected with the slag removal main pipe through a second flange.

4. The rock jacking pipe self-suction type pipe bottom sediment cleaning method according to claim 1, characterized by, The slag removal main pipe is uniformly provided with a plurality of pipe joints.

5. The rock jacking pipe self-suction type pipe bottom sediment cleaning method according to claim 1, characterized by, The valve is an electric valve.

6. The rock jacking pipe self-suction type pipe bottom sediment cleaning method according to claim 1, characterized by, The slag deposition tank comprises a slag grinding machine, a conveying belt and a storage tank; The slag grinding machine is connected with the pump station; The conveying belt connects the slag grinding machine and the storage tank.

7. The rock jacking pipe self-suction type pipe bottom sediment cleaning method according to claim 1, characterized by, In step S3, the slag deposition tank grinds the slag and conveys the slag to the storage tank through the conveying belt.

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