An in-situ curing system

Abstract

The application discloses an in-situ solidification system, comprising: a mobile module having a mounting platform, a working module and a control module mounted on the mounting platform; at least one working module, a track being arranged on a working platform of the working module, a powerful stirring device moving along the track, and a spraying and powerful stirring solidification operation being started after the powerful stirring device reaches a predetermined position; and a control module, comprising: a central control system for receiving initial setting data and rating and performing analysis and processing on data returned by a mounting structure of the central control system, and a slurry control unit for controlling a solidifying agent slurry flow rate in the powerful stirring device to realize control on material usage. The application overcomes defects of existing construction devices and methods, and improves operation efficiency of in-situ solidification.

Description

Technical Field

[0001] This application belongs to the field of in-situ curing technology, specifically relating to an in-situ curing system. Background Technology

[0002] In-situ solidification is a foundation reinforcement method that uses a solidifying agent to react with the soil through a physicochemical reaction, directly mixing to form a high-strength reinforced layer in soft soil foundations without excavation or backfilling. This technology is characterized by high efficiency, speed, environmental friendliness, energy saving, strong adaptability, and excellent economic benefits, and is widely used in foundation reinforcement for tidal flat reclamation, roadbeds, port storage yards, industrial parks, and landfills, as well as in the stabilization of contaminated soil. Soft soil foundations to be reinforced typically have characteristics such as high natural water content, large porosity, high compressibility, low shear strength, and low bearing capacity. Conventional wheeled machinery has difficulty accessing the site for construction; currently, tracked excavators are usually replaced with hydraulically driven high-powered mixing equipment for construction. The tracked excavators used in this construction method typically use diesel fuel, emitting large amounts of exhaust gas during construction, causing environmental pollution and poor green benefits. To improve operational efficiency, excavators are generally positioned sideways during in-situ high-powered mixing, which results in different pressures under the tracks on both sides, or even one side being suspended, potentially causing the excavator to sink or even overturn. The positioning accuracy of the solidification points, the verticality of the powerful mixing device, and the amount of grout injected (i.e., the amount of material used) during construction are highly dependent on the technical skills of the excavator operator, resulting in poor construction efficiency and quality reliability. Summary of the Invention

[0003] In view of the shortcomings or deficiencies of the prior art, the technical problem to be solved by this application is an in-situ curing system to overcome the defects of existing construction devices and methods, while improving work efficiency.

[0004] To solve the above-mentioned technical problems, this application provides the following technical solution: This application proposes an in-situ curing system, comprising: A mobile module has a mounting platform on which a working module and a control module are mounted; At least one working module has a track on its working platform. A high-powered mixing device moves along the track. Once the high-powered mixing device reaches a predetermined position, the spraying, high-powered mixing, and curing operation begins. The system also includes a control module, comprising a central control system and a slurry control unit. The central control system receives initial setting data and calibration data and analyzes and processes the data transmitted back by the mounted structural components. The slurry control unit controls the flow rate of the curing agent slurry in the high-intensity mixing equipment to control the material usage.

[0005] Further optionally, each of the working modules is equipped with a hydraulic jack and a spherical support. The lower end of the hydraulic jack is connected to the mounting platform, and its upper end is connected to the spherical support. The hydraulic jack is also connected to the hydraulic control unit in the control module. Under the control of the hydraulic control unit, the working module is leveled and the speed of its vertical movement is controlled.

[0006] Further optionally, the mobile module further includes: a drive wheel, a driven wheel, and a track. The drive wheel is rotatably mounted on the mounting platform and is driven by a motor. The driven wheel is spaced in front of the drive wheel, and the track covers the drive wheel and the driven wheel. Under the driving action of the motor, the force is evenly transmitted to the soft soil foundation.

[0007] Further optionally, the working module also includes: a track, a brake wheel, a follower wheel, a hanging rail, and a traveling trolley disposed on the platform, wherein the track is connected to the upper passage beam and the lower passage beam, and is used to support the movement of the brake wheel and the follower wheel and to transmit the wheel pressure to the upper passage beam and the lower passage beam; The brake wheel and the follower wheel are connected as one unit by a wheel axle; The two ends of the hanging rail are respectively connected to the brake wheel and the follower wheel, and the hanging rail is used to support the traveling trolley; the traveling trolley is also equipped with the powerful stirring device, which, under the drive of the motor, enables the traveling trolley to move and position on the hanging rail.

[0008] Alternatively, the axle may also be provided with buffer pads at both ends.

[0009] Further optionally, it also includes a stop, the stop being disposed on the lower passageway beam.

[0010] Alternatively, the stop is made of steel profiles and is welded to the lower passageway beam.

[0011] Alternatively, the stop may also be equipped with a shock-absorbing pad.

[0012] Alternatively, the platform may be composed of platform beams and platform plates, with the platform plates welded to the top surface of the platform beams and the two ends of the platform beams connected to the upper passageway beams.

[0013] Alternatively, the high-powered mixing equipment is further equipped with a positioning device, a speed sensor, and a spray flow sensor.

[0014] Compared with the prior art, this application has the following technical effects: This application overcomes the technical problems in the prior art where the positioning accuracy of the curing point, the verticality of the powerful mixing device, and the amount of grout (i.e., the amount of material) are highly dependent on the technical skills of the excavator operator, resulting in poor construction efficiency and quality reliability. By adopting the cooperation of the moving module, the working module, and the control module, the efficiency of in-situ curing is effectively improved. Attached Figure Description

[0015] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 : A side view of an embodiment of the in-situ curing system of this application; Figure 2 : A front view of an embodiment of the in-situ curing system of this application; Figure 3 : A top view of an embodiment of the in-situ curing system of this application; Figure 4 : Flowchart of an embodiment of the in-situ curing system of this application; Figure 5 : A schematic diagram of the curing range of a single point in one embodiment of this application.

[0016] Reference numerals: 10-Working module, 11-Mounting platform, 12-Drive wheel, 13-Driven wheel, 14-Crawler, 20-Moving module, 21-Hydraulic jack, 22-Spherical support, 23-Railway, 231-Upper walkway beam, 232-Lower walkway beam, 24-Brake wheel, 25-Follower wheel, 26-Axle, 261-Buffer pad, 262-Stop device, 263-Shock absorber, 27-Hanging rail, 28-Traveling trolley, 29-High-power mixing equipment, 291-Platform, 292-Platform beam, 30-Control module, 31-Hydraulic control unit, 32-Slurry control unit, 33-Power distribution unit, and 34-Central control system. Detailed Implementation

[0017] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0018] In one embodiment of this application, such as Figures 1 to 3 As shown, an in-situ curing system includes: The mobile module 20 has a mounting platform 11 on which the working module 10 and the control module 30 are mounted; At least one working module 10 has a track 23 on its working platform 291. A high-power mixing device 29 moves along the track 23. After the high-power mixing device 29 reaches the predetermined position, the spraying high-power mixing and curing operation begins. The system also includes a control module 30, which comprises a central control system 34 and a slurry control unit 32. The central control system 34 is used to receive initial setting data and calibration and to analyze and process the data transmitted back by the mounted structural components. The slurry control unit 32 is used to control the flow rate of the curing agent slurry in the high-intensity mixing equipment 29 to achieve control over the material usage.

[0019] In this embodiment, the main functions of the mobile module 20 are: first, to achieve mobile positioning and accurately park the device at the target work point; and second, to carry the working module 10 and the control module 30 mentioned above.

[0020] The mobile module 20 further includes: drive wheels 12, driven wheels 13, and tracks 14. The drive wheels 12 are rotatably mounted on the mounting platform 11 and are driven by a motor. The driven wheels 13 are spaced in front of the drive wheels 12. The tracks 14 cover the drive wheels 12 and the driven wheels 13. Under the driving action of the motor, the force is evenly transmitted to the soft soil foundation. The drive wheels 12, a total of four in number (front, rear, left, and right), are powered by built-in motors and move to a predetermined position according to the instructions of the central control system 34 described below. The driven wheels 13 move in coordination and evenly transmit all the force to the tracks 14. The tracks 14 transmit all the force to the soft soil foundation, ensuring the solidification device is supported without sinking into the soft soil. The mounting platform 11 provides the installation position and space for the working module 10 and the control module 30.

[0021] In one embodiment, two independent working modules 10 are configured, each of which is equipped with a hydraulic jack 21 and a spherical support 22. The lower end of the hydraulic jack 21 is connected to the mounting platform 11, and its upper end is connected to the spherical support 22. The hydraulic jack 21 is also connected to the hydraulic control unit 31 in the control module 30. Under the control of the hydraulic control unit 31, the working module 10 is leveled and the speed of its vertical movement is controlled.

[0022] Specifically, each working module 10 is equipped with four hydraulic jacks 21, with their lower ends connected to the mounting platform 11 and their upper ends connected to the spherical support 22. Their function is to level the working module 10 and control its vertical movement speed under the control of the hydraulic control unit 31, so as to achieve the required depth of soft soil solidification. More preferably, the hydraulic jacks 21 are made of steel, and the connection can be made by welding or bolting.

[0023] Furthermore, the bottom surface of the spherical support 22 is connected to the hydraulic jack 21, and its top surface is connected to the lower rail 23. Its function is to support all components on it and release bending moment and horizontal force. After the hydraulic jack 21 levels the working module 10 into its working position, only vertical force is transmitted to the hydraulic jack 21. More preferably, the spherical support 22 is made of steel, and the connection can be made by welding or bolting.

[0024] In one embodiment of this application, the working module 10 further includes: a track 23, a brake wheel 24, a follower wheel 25, a hanging rail 27, and a traveling trolley 28 disposed on the platform 291. The track 23 is connected to the upper aisle beam 231 and the lower aisle beam 232, and is used to support the movement of the brake wheel 24 and the follower wheel 25 and to transmit the wheel pressure to the upper aisle beam 231 and the lower aisle beam 232 after diffusion. More preferably, the track 23 is made of steel and is bolted to the upper aisle beam 231 and the lower aisle beam 232.

[0025] The brake wheel 24 and the follower wheel 25 are connected as one unit by the wheel axle 26; the brake wheel 24 and the follower wheel 25 work together to enable the powerful stirring device 29 to move along the track 23. The brake wheel 24 is driven by a motor to achieve acceleration, deceleration and movement, and is equipped with a positioning caliper. After reaching the predetermined position, the positioning caliper locks. More preferably, both ends of the axle 26 are also provided with buffer pads 261; the buffer pads 261 are made of rubber material and are used to buffer the collision with the axle 26. The two ends of the hanging rail 27 are respectively connected to the brake wheel 24 and the follower wheel 25. The hanging rail 27 is used to support the traveling trolley 28. The traveling trolley 28 is also equipped with the powerful stirring device 29. Under the drive of the motor, the traveling trolley 28 can move and be positioned on the hanging rail 27.

[0026] The hanging rail 27 is made of steel, and its connection can be made by welding or bolting.

[0027] Furthermore, this embodiment also includes a stop 262, which is disposed on the lower passage beam 232. The stop 262 is made of structural steel and is welded to the lower passage beam 232; the stop 262 is used to limit the travel position of the high-pressure mixing device 29. The high-pressure mixing device 29 is mounted on a traveling trolley 28, and after reaching a predetermined position, it begins the high-pressure mixing and curing operation of the sprayed grout, reaching a predetermined curing depth under the control of the hydraulic jack 21. More preferably, the high-pressure mixing device 29 is also equipped with a positioning device, a speed sensor, and a sprayed grout flow controller, which are electrically connected to the central control system 34.

[0028] More preferably, the stopper 262 is further provided with a shock-absorbing pad 263. The shock-absorbing pad 263 is made of rubber material and is used to buffer the impact with the stopper 262.

[0029] The platform 291 consists of a platform beam 292 and a platform plate. The platform plate 291 is welded to the top surface of the platform beam 292, and both ends of the platform beam 292 are connected to the upper passage beam 231. More preferably, the two ends of the platform beam 292 are connected to the upper passage beam 231 by welding or bolting. The platform 291 serves two purposes: firstly, it can carry counterweights to ensure the speed at which the high-powered mixing equipment 29 enters the soft soil; secondly, it provides operating space for the maintenance of the device.

[0030] The following section will describe the specific in-situ curing method in detail. Specific numerical values ​​such as water-cement ratio and depth mentioned below are merely illustrative and do not limit the scope of protection of this application. For details, please refer to [the relevant documentation / reference]. Figure 4 As shown: Step 1: Site preparation, including leveling the site and removing debris and large stones that may affect construction.

[0031] Step 2: Prepare the curing agent slurry according to the mixing ratio determined by the experiment. The water-cement ratio for preparing the curing agent slurry is 1:1, as determined by the experiment before the formal curing construction.

[0032] Step 3: Initial system setup and calibration.

[0033] Specifically, the initial setup method is as follows: (Formula 1) (Formula 2) in: : Curing agent slurry flow rate (L / min); : Time taken (min) for a complete construction operation of the high-powered mixing equipment 29; : Cementitious agent slurry density (t / m³) 3 ); Water-cement ratio of curing agent slurry; Single-point curing agent material supply (kg); Required amount of curing agent material at a single location (kg); : Horizontal projected length (m) of the high-powered mixing equipment 29; : Horizontal projection width (m) of the high-powered mixing equipment 29; : Curing depth (m); Density of soft soil to be solidified (Kg / m³) 3 ); Percentage of curing agent content; Initial calibration =90 L / min; =7%; =1.30 t / m 3 ; =1600 Kg / m 3 ; =1.0; =1.3m; =0.8 m; =2 m, substituting into Formula 1 and Formula 2, take... , have to: =2 (min); If the downward and upward movements of the high-powered mixing equipment 29 are at the same speed, then: ; Adjust the counterweight on the device platform 291 to ensure that the downward speed is not less than [a certain value] when the hydraulic jack 21 is not engaged and the high-power mixing equipment 29 is operating normally. .

[0034] Step 4: The system is positioned and leveled to complete the solidification of one work unit.

[0035] The plan view of the area to be solidified is input into the central control system 34 for unit division, forming the positioning coordinates (X) of each work unit under the global coordinate system. i Y j ), and then based on this, according to The local coordinates (Xn, Yn) of the center of the solidification range of the 29-point high-intensity mixing equipment are formed, and the work unit is as follows: Figure 5 As shown.

[0036] The device is based on coordinates (X) i Y j After the working module 10 is in place and leveled, the curing process for the downlink segment begins. During the downlink operation, the central control system 34 analyzes and judges the downlink speed transmitted back by the sensors in real time. At that time, the hydraulic control unit 31 drives the hydraulic jack 21 according to the instructions of the central control system 34 to maintain the downward speed. ;when At that time, adjust the flow rate of the curing agent slurry according to formula 3.

[0037] (Formula 3) Simultaneously determine the total duration t of the downlink segment, if... This indicates abnormal soil conditions at this location. Stop the soil stabilization work at this location, record and save its coordinates for later separate processing, and proceed to the next location for stabilization work. This indicates that although there was an anomaly at this location, the curing process could still be completed at that single point by adjusting the flow rate of the curing agent slurry while controlling the amount of material added. This is based on the set curing depth. After the downward solidification operation is completed, the work platform returns to the upward operation section. Under the command of the central control system 34, the hydraulic control unit 31 drives the hydraulic jacks 21 according to... The system moves upwards, and after the curing operation at a single point is completed, it moves to the next point. After the two work platforms complete the curing operation in one work unit, the device repositions itself and moves to the next work unit.

[0038] Step 6: Level the previous curing unit.

[0039] Step 7: Maintenance.

[0040] This application overcomes the technical problems in existing technologies where the positioning accuracy of the curing points, the verticality of the powerful mixing device, and the amount of grout (i.e., material usage) are highly dependent on the technical skills of the excavator operator, resulting in poor construction efficiency and quality reliability. By employing the coordinated operation of the moving module 20, the working module 10, and the control module 30, the efficiency of in-situ curing is effectively improved. Therefore, this application has good market application prospects.

[0041] In one embodiment of this application, the control module 30 comprises a central control system 34, a power distribution unit 33, a hydraulic control unit 31, and a slurry control unit 32. The central control system 34 receives initial setting data and calibration, analyzes and processes data transmitted in real time from the positioning device, speed sensor, and slurry flow controller mounted on the equipment, and issues instructions to each unit to adjust the coordinated operation of each component. The power distribution unit 33 provides power to the entire device. The hydraulic control unit 31 levels the working module 10 and controls the curing speed and depth. The slurry control unit 32 controls the flow rate of the curing agent slurry, thereby controlling the amount of material used.

[0042] In the description of this application, unless otherwise expressly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0043] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0044] In the description of this embodiment, the terms "upper," "lower," "left," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0045] The above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. The preferred embodiments have been described in detail. Those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this application without departing from the spirit and scope of the technical solutions of this application, and all such modifications and substitutions should be covered within the scope of the claims of this application.

Claims

1. An in-situ curing system, characterized in that, include: A mobile module having a mounting platform on which a working module and a control module are mounted; At least one working module has a track on its working platform. A high-powered mixing device moves along the track. Once the high-powered mixing device reaches a predetermined position, the spraying, mixing, and curing operation begins. Each working module is equipped with a hydraulic jack and a spherical support. The lower end of the hydraulic jack is connected to the mounting platform, and its upper end is connected to the spherical support. The hydraulic jack is also connected to a hydraulic control unit in the control module. Under the control of the hydraulic control unit, the working module is leveled and its vertical movement speed is controlled. The system also includes a control module, comprising a central control system and a slurry control unit. The high-power mixing equipment is further equipped with a positioning device, a speed sensor, and a slurry flow sensor, which are electrically connected to the central control system. The central control system is used to receive initial setting data and calibration, and to perform real-time analysis and processing of the downward speed of the high-intensity mixing equipment transmitted back by the speed sensor. Under the control of the central control system, the slurry control unit adjusts the flow rate of the curing agent slurry in the high-intensity mixing equipment according to the analysis and processing results of the downward speed, so as to achieve control of material usage.

2. The in-situ curing system according to claim 1, characterized in that, The mobile module further includes a drive wheel, a driven wheel, and a track. The drive wheel is rotatably mounted on the mounting platform and is driven by a motor. The driven wheel is spaced in front of the drive wheel, and the track covers the drive wheel and the driven wheel. Under the driving action of the motor, the force is evenly transmitted to the soft soil foundation.

3. The in-situ curing system according to claim 1, characterized in that, The working module also includes: a track, a brake wheel, a follower wheel, a hanging rail, and a traveling trolley set on the platform. The track is connected to the upper and lower passage beams and is used to support the movement of the brake wheel and the follower wheel and to diffuse and transmit the wheel pressure to the upper and lower passage beams. The brake wheel and the follower wheel are connected as one unit by a wheel axle; The two ends of the hanging rail are respectively connected to the brake wheel and the follower wheel, and the hanging rail is used to support the traveling trolley; the traveling trolley is also equipped with the powerful stirring device, which, under the drive of the motor, enables the traveling trolley to move and position on the hanging rail.

4. The in-situ curing system according to claim 3, characterized in that, Both ends of the axle are also equipped with buffer pads.

5. The in-situ curing system according to claim 3, characterized in that, Also includes: A stopper is provided on the lower passageway beam.

6. The in-situ curing system according to claim 5, characterized in that, The stop is made of steel profiles and is welded to the lower passageway beam.

7. The in-situ curing system according to claim 5, characterized in that, The stop is also equipped with shock-absorbing pads.

8. The in-situ curing system according to any one of claims 3 to 7, characterized in that, The platform consists of platform beams and platform plates. The platform plates are welded to the top surface of the platform beams, and the two ends of the platform beams are connected to the upper passageway beams.

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