Intelligent slurry supply system for deep stirring and milling cement soil diaphragm wall construction and control method of intelligent slurry supply system

Abstract

The invention provides an intelligent slurry supply system for deep stirring and milling cement soil diaphragm wall construction and a control method thereof, the slurry supply system comprises at least one slurry supply pump, the slurry supply pump is provided with a slurry supply port, the slurry supply port is connected with a slurry supply pipeline, and the end, away from the slurry supply port, of the slurry supply pipeline is communicated with a slurry spraying port of a milling wheel; the acquisition module is configured to be used for acquiring preset construction parameters and acquiring the real-time tunneling speed of a milling wheel in real time every first preset duration; the preset construction parameters at least comprise the effective groove length, the wall thickness, the stratum density, the theoretical cement mixing ratio, the cement density and the water cement ratio; and the control module is electrically connected with the acquisition module and the slurry supply pump, and is configured to calculate the corresponding target slurry supply flow according to the construction preset parameters and the real-time tunneling speed so as to control the slurry supply pump to supply slurry to the slurry spraying opening according to the target slurry supply flow. According to the scheme, it is guaranteed that the actual cement mixing ratio is consistent with the theoretical cement mixing ratio, the wall quality is guaranteed, and meanwhile cement grout waste caused by the inaccurate actual cement mixing ratio is avoided.

Description

Technical Field

[0001] The present application relates to the technical field of double-wheel milling deep-mixing cement soil underground continuous wall construction, and specifically to an intelligent slurry supply system for deep-mixing cement soil anti-seepage wall construction and a control method thereof. Background Art

[0002] The double-wheel milling deep mixing cement soil diaphragm wall method (CSM) is a deep mixing construction method widely used in hydraulic engineering and other fields. In this method, the most important factor affecting the quality of the final wall, such as uniformity, anti-seepage performance, and strength, is the proportion of cement ash mixed into the in-situ soil at the construction site, i.e., the "cement ash ratio."

[0003] In the existing technology, the theoretical value of the lime-mixing ratio is mainly determined through site exploration and experimental data. During the actual construction process, in order to ensure that the actual "lime-mixing ratio" value is as consistent as possible with the theoretical lime-mixing ratio, it is necessary to change the slurry supply, that is, the mortar pump operator manually performs a gear shift operation. When shifting gears, in order to ensure that the wall quality meets the requirements, the operator will usually increase the slurry supply to achieve the actual "lime-mixing ratio" value as much as possible. This will cause the actual lime-mixing ratio to be much greater than the theoretical value, thereby resulting in a large amount of cement slurry waste. Summary of the Invention

[0004] In view of the above-mentioned defects or deficiencies in the prior art, the present application aims to provide an intelligent slurry supply system and a control method for the construction of deep mixing and milling cement soil anti-seepage wall to reduce the waste of cement slurry.

[0005] In a first aspect, the present application proposes an intelligent slurry supply system for deep milling cement soil anti-seepage wall construction, which is used to supply slurry to a double-wheel milling device having a milling wheel; the slurry supply system includes: A slurry supply assembly, the slurry supply assembly comprising at least one slurry supply pump, the slurry supply pump having a slurry supply port, the slurry supply port being connected to a slurry supply pipe, the slurry supply pipe being connected to the slurry spraying port of the milling wheel at an end away from the slurry supply port; a collection module configured to obtain preset construction parameters and collect the real-time excavation speed of the milling wheel at intervals of a first preset time; the preset construction parameters include at least effective groove length, wall thickness, stratum density, theoretical cement ratio, cement density, and water-cement ratio; A control module is electrically connected to the acquisition module and the slurry supply pump respectively. The control module is configured to calculate the corresponding target slurry supply flow rate based on the preset construction parameters and the real-time excavation speed, so as to control the slurry supply pump to supply slurry to the grouting port according to the target slurry supply flow rate.

[0006] According to the technical solution provided in the embodiment of the present application, the slurry supply assembly includes two slurry supply pumps. When the operating status of the two slurry supply pumps is normal, the control module controls the two slurry supply pumps to supply slurry to the spray port at half of the target slurry supply flow rate.

[0007] According to the technical solution provided in the embodiment of the present application, when there is only one slurry supply pump in normal operation, the control module controls the slurry supply pump in normal operation to supply slurry to the spray port at the target slurry supply flow rate.

[0008] According to the technical solution provided in the embodiment of the present application, it also includes an air supply component, which includes an air compressor and an air supply pipe connected to the high-pressure gas output port of the air compressor, and the end of the air supply pipe away from the high-pressure gas output port is connected to the spraying port.

[0009] According to the technical solution provided in the embodiment of the present application, the slurry supply pump also has a first slurry inlet, which is connected to a slurry storage barrel through a first slurry inlet pipe, and the slurry storage barrel is connected to an upstream slurry making station through a second slurry inlet pipe.

[0010] According to the technical solution provided in the embodiment of the present application, the slurry storage barrel has a storage space for storing cement slurry, a cover plate is provided on the top of the slurry storage barrel, a drive motor is installed on the cover plate, the output shaft of the drive motor is connected to a stirring blade, and the stirring blade is used to stir the cement slurry in the storage space.

[0011] According to the technical solution provided in the embodiment of the present application, a flow meter and a pressure sensor are provided in the slurry supply pipeline.

[0012] According to the technical solution provided in the embodiment of the present application, an upper liquid level gauge, a middle liquid level gauge and a lower liquid level gauge are sequentially provided on the slurry storage barrel along its height direction.

[0013] In a second aspect, the present application proposes a control method for an intelligent slurry supply system for deep mixing and milling cement soil anti-seepage wall construction, which is based on the intelligent slurry supply system for deep mixing and milling cement soil anti-seepage wall construction as described above and includes the following steps: When the double-wheel milling device is in a tunneling state, the preset construction parameters are obtained, and the real-time tunneling speed of the milling wheel is collected in real time at intervals of a first preset time length; Calculate the corresponding target slurry flow rate based on the preset construction parameters and the real-time excavation speed, and record the target slurry flow rate in a project record table, wherein the project record table includes multiple excavation states and multiple elevation positions corresponding to each excavation state, and each elevation position also corresponds to the real-time excavation speed and the target slurry flow rate; According to the target slurry supply flow rate, controlling the slurry supply pump to supply slurry to the grouting port at the target slurry supply flow rate when the double-wheel milling device is in the excavation state; After the excavation is completed, the double-wheel milling device switches to the lifting state, and calls the engineering record table to obtain multiple elevation positions corresponding to the excavation state corresponding to the current lifting state, and the target slurry flow rate corresponding to each elevation position; According to the target slurry supply flow rate corresponding to each elevation position, the upper slurry supply flow rate corresponding to each elevation position is obtained; The slurry supply pump is controlled to provide slurry flow corresponding to the upper position at different elevations, and to supply slurry to the grouting port when the double-wheel milling equipment is in an upward state.

[0014] According to the technical solution provided in the embodiment of the present application, the slurry supply pump is controlled to supply slurry to the spraying port at the target slurry supply flow rate according to the target slurry supply flow rate. The control method specifically includes the following steps: According to the target slurry supply flow rate corresponding to the current slurry supply cycle, the slurry supply pump is controlled to supply slurry to the spray port at the target slurry supply flow rate during the current slurry supply cycle; the duration of the current slurry supply cycle is the first preset duration; After controlling the slurry supply pump to supply slurry to the spray port at the target slurry supply flow rate corresponding to the current slurry supply cycle according to the target slurry supply flow rate, the method further includes the following steps: Determining whether the two slurry supply pumps supply slurry simultaneously during the current slurry supply cycle; If yes, two actual slurry supply flow rates are obtained based on the flowmeters in the two slurry supply pipes; the two actual slurry supply flow rates are respectively the cement slurry flow rates actually flowing through each of the slurry supply pipes when the slurry supply pump supplies slurry to the spraying port via the slurry supply pipes; If the deviations of the two actual slurry supply flow rates from half of the target slurry supply flow rate are greater than a first preset threshold, determining whether the two actual slurry supply flow rates are the same; If yes, a first warning signal is issued, the first warning signal is used to indicate that the output power of the slurry supply pump is incorrect; if no, a target slurry supply pump is determined, the target slurry supply pump being the slurry supply pump corresponding to the slurry supply pipeline whose actual slurry supply flow rate is closer to half of the target slurry supply flow rate; The target slurry supply pump is controlled to supply slurry to the spray port at a target slurry supply flow rate corresponding to a next slurry supply cycle in the next slurry supply cycle; the next slurry supply cycle is a slurry supply cycle after the current slurry supply cycle and adjacent to the current slurry supply cycle.

[0015] Compared with the existing technology, the beneficial effect of this application is that the acquisition module collects the real-time excavation speed of the milling wheel in real time, and combined with the preset construction parameters, the control module calculates the corresponding target slurry flow rate, thereby controlling the slurry supply of the slurry pump. This ensures that the actual "ash ratio" is consistent with the theoretical ash ratio, while ensuring the quality of the wall and avoiding the waste of cement slurry due to inaccurate actual ash ratio. At the same time, this solution breaks away from the limitations of traditional manual shifting operations and can automatically adjust the slurry flow rate according to the real-time changes in the milling wheel excavation speed, thereby improving the intelligence level and efficiency of construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the structure of an intelligent slurry supply system for deep mixing and milling cement soil anti-seepage wall construction provided in an embodiment of the present application; Figure 2 Provided in the embodiments of this application Figure 1 Schematic diagram of the structure of the middle A part (intelligent pulp supply system); Figure 3 A schematic diagram of the structure of the slurry storage barrel provided in an embodiment of the present application; Figure 4 This is a working principle diagram of the intelligent slurry supply system for deep mixing and milling cement soil anti-seepage wall construction provided in an embodiment of the present application; Figure 5 This is a signal transmission diagram of the intelligent slurry supply system for deep mixing and milling cement soil anti-seepage wall construction provided in an embodiment of the present application.

[0017] The text annotations in the figure represent: 1. Double-wheel milling equipment; 11. Spraying port; 2. Slurry supply pipeline; 3. Air supply pipeline; 4. Slurry storage barrel; 41. Drive motor; 42. Cover plate; 43. Stirring blade; 44. Upper liquid level gauge; 45. Middle liquid level gauge; 46. Lower liquid level gauge; 5. Flow meter; 6. Slurry supply pump; 7. Pressure sensor; 8. Industrial control cabinet; 9. Air compressor; 10. Power distribution cabinet. DETAILED DESCRIPTION

[0018] The present application will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely for the purpose of explaining the relevant invention and are not intended to limit the invention. It should also be noted that, for ease of description, only portions relevant to the invention are shown in the accompanying drawings.

[0019] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0020] Example 1 As mentioned in the background technology, in response to the problems in the prior art, this application proposes an intelligent slurry supply system for deep mixing and milling cement soil anti-seepage wall construction, which is used to supply slurry to a double-wheel milling device 1, wherein the double-wheel milling device 1 has a milling wheel; Figure 1 and Figure 2 As shown, the slurry supply system includes: A slurry supply assembly, comprising at least one slurry supply pump 6, wherein the slurry supply pump 6 has a slurry supply port, the slurry supply port is connected to a slurry supply pipe 2, and the end of the slurry supply pipe 2 away from the slurry supply port is in communication with the spraying port 11 of the milling wheel; a collection module configured to obtain preset construction parameters and collect the real-time excavation speed of the milling wheel at intervals of a first preset time; the preset construction parameters include at least effective groove length, wall thickness, stratum density, theoretical cement ratio, cement density, and water-cement ratio; A control module is electrically connected to the acquisition module and the slurry supply pump 6 respectively. The control module is configured to calculate the corresponding target slurry supply flow rate according to the preset construction parameters and the real-time excavation speed, so as to control the slurry supply pump 6 to supply slurry to the grouting port 11 according to the target slurry supply flow rate.

[0021] Specifically, during the actual construction process, the construction parameters that affect the actual ash ratio and their relationships are as follows: The excavated mass per unit time corresponding to the milling wheel excavation speed of the double-wheel milling equipment 1 is: M=v(milling wheel excavation speed)×L(effective groove length)×t(wall thickness)× (current ground density); the mass of cement ash that should be added is: m (the mass of cement ash required for the corresponding excavated earthwork) = M × N (the quantity per unit time); the corresponding real-time cement slurry flow rate is: V (slurry flow rate) = m / (cement density) + water-cement ratio × m; Among the above parameters, usually "L, t, 、N、 ", water-cement ratio" are known parameters and change little during the construction process. V (slurry flow rate) and v (milling wheel excavation speed) are real-time changes, and v (milling wheel excavation speed) cannot be controlled manually. When the stratum is hard, the milling wheel excavation speed is slow, and when the stratum is soft, the excavation speed is fast.

[0022] Therefore, in determining “L, t, 、N、 After adjusting the parameters of "water-cement ratio", the slurry flow rate and the real-time excavation speed "v (milling wheel excavation speed)" of the double-wheel milling equipment 1 are always kept in the corresponding relationship shown in the following formula. This can ensure that the actual "cement ratio" value during the CSM construction process is consistent with the theoretical "cement ratio", thereby reducing the cement consumption while ensuring the wall quality; the corresponding relationship is: V (slurry flow rate) = [v (milling wheel excavation speed) × L (effective groove length) × t (wall thickness) × ]×N / + [v(milling wheel excavation speed) × L(effective groove length) × t(wall thickness) × ] × N × water-cement ratio; Based on the above principles, an intelligent slurry supply system for the double-wheel milling equipment 1 of the present application is proposed.

[0023] Specifically, the control module and the acquisition module are integrated into the industrial control cabinet 8. The industrial control cabinet 8 contains an Advantech 610L industrial computer, which is used to collect all sensor data on site and automatically control the slurry flow rate of at least one slurry supply pump 6 according to the software program settings installed in the control module. The hard disk built into the industrial computer can save data during the construction process. The industrial control cabinet 8 is equipped with a small DC power supply to provide 24V DC power to the two flow meters 5, the pressure sensor 7 and the upper liquid level gauge 44, the middle liquid level gauge 45 and the lower liquid level gauge 46 in the slurry storage barrel 4. A printer in the industrial control cabinet 8 can be used to automatically print on-site construction reports, or manually print reports by selecting reports independently through software. The industrial computer is equipped with a 4G wireless network card, which can connect the existing industrial computer to the network.

[0024] Specifically, the effective trench length is determined based on engineering design requirements. For example, when constructing a water-stop curtain for a foundation pit in a water conservancy project, the design drawings will clearly specify the length of the underground diaphragm wall along the perimeter of the foundation pit; this length is the effective trench length. Wall thickness is a pre-designed parameter that depends on the function of the underground diaphragm wall and the engineering requirements. For example, if the wall is used as a retaining wall, the appropriate wall thickness is determined during the design phase based on factors such as the required lateral earth pressure. Ground density is primarily determined through surveying. The current ground density corresponds to ground depth, for example, ρ3 for depths 0-30 meters, ρ4 for depths 30-40 meters, and so on. A ground density table corresponding to each depth can be manually entered before trench construction begins. The table includes multiple ground depths and the ground density corresponding to each depth. During slurry supply, the intelligent slurry supply system's data acquisition module reads the ground density corresponding to the current excavation depth (ground depth) from the table based on the current excavation depth. The theoretical cement ratio is determined through site exploration and experimental data. For different geological conditions, the appropriate cement ratio is determined through laboratory test analysis, combined with information on soil composition and properties obtained from geological exploration. Cement density is an inherent physical property. Once the type and type of cement are determined, the corresponding cement density is obtained. This can be determined before construction by consulting the technical data of the cement product or conducting simple tests. The water-cement ratio is determined before construction based on project requirements and experience. It is a key parameter in cement slurry preparation, used to control the performance of the cement slurry. This parameter is set before construction to guide the cement slurry preparation process.

[0025] It should be noted that when the target excavation distance (small) in a certain scenario and the stratum density remains unchanged, the operator only needs to input the obtained construction preset parameters into the acquisition module before supplying slurry. However, when the target excavation distance (large) in a certain scenario and the stratum density changes, the stratum density cannot be input in advance. At this time, the acquisition module is configured to obtain the effective groove length, wall thickness, theoretical ash ratio, cement density and water-cement ratio, and collect the real-time excavation speed and real-time excavation depth of the milling wheel in real time at every first preset time interval.

[0026] Specifically, the current dual-wheel milling equipment 1 is equipped with a cloud monitoring platform. After logging in to the industrial computer using a designated account, the platform allows users to view real-time information such as the milling wheel's real-time excavation speed and current excavation depth. This information is then captured in real time by the intelligent slurry supply system's acquisition module, allowing the real-time excavation speed of the milling wheel to be collected. Furthermore, the formation density is also determined by reading the current excavation depth. Figure 4 and Figure 5 2 is a signal transmission diagram, in which the deep mixing and milling equipment is a double-wheel milling equipment 1, and the variable frequency mortar pump 1 and the variable frequency mortar pump 2 are two slurry supply pumps 6.

[0027] It should be noted that during the construction of double-wheel milling, grouting is required not only when the milling wheel is excavating (excavating downward in the direction of soil depth), but also when the milling wheel is lifted (lifted upward) after the excavation is completed, an appropriate amount of grouting is required to ensure that the milling wheel can be smoothly withdrawn from the grouted slot. Generally, the amount of grouting when the milling wheel is lifted is about half of the amount of grouting during excavation, and there is also sufficient slurry on the upper part of the wall to ensure the quality of the wall.

[0028] Therefore, this embodiment mainly focuses on the situation when the milling wheel is in the excavation state. When the milling wheel is in the lifting state, different control methods are adopted. Specifically: The acquisition module is configured to acquire preset construction parameters when the milling wheel is in the excavation state, and to acquire the real-time excavation speed of the milling wheel in real time at intervals of a first preset time; the preset construction parameters include at least effective groove length, wall thickness, stratum density, theoretical cement ratio, cement density, and water-cement ratio; The control module is configured to calculate the corresponding target slurry flow rate according to the preset construction parameters and the real-time excavation speed when the milling wheel is in the excavation state, so as to control the slurry supply pump 6 to supply slurry to the grouting port 11 according to the target slurry supply flow rate.

[0029] The acquisition module is further configured to obtain the upper slurry flow rate at each elevation position according to the target slurry flow rate corresponding to the tunneling at the same elevation position when the milling wheel is in the lifted state; The control module is further configured to control the slurry supply pump 6 to supply slurry to the grouting port 11 according to the upper slurry flow rate at each elevation position when the milling wheel is in the lifted state.

[0030] Optionally, the amount of grouting during excavation at the same elevation is twice that during lifting. For example, at a depth of 5 meters from the ground, the amount of cement slurry sprayed during the excavation of the milling wheel should be twice the amount of slurry sprayed when the milling wheel is lifted through this position. Therefore, the slurry flow rate provided at the top is half of the target slurry flow rate corresponding to the excavation at the same elevation.

[0031] Furthermore, the slurry supply assembly includes two slurry supply pumps 6. When the operating states of the two slurry supply pumps 6 are both normal, the control module controls the two slurry supply pumps 6 to supply slurry to the spraying port 11 at half of the target slurry supply flow rate.

[0032] Furthermore, when there is only one slurry supply pump 6 in a normal operating state, the control module controls the slurry supply pump 6 in a normal operating state to supply slurry to the spraying port 11 at the target slurry supply flow rate.

[0033] Specifically, the slurry supply assembly includes two variable-frequency pumps 6 (equipped with a frequency converter cabinet), which can continuously adjust the slurry flow rate according to control signals. The two slurry pumps 6 are deployed on-site primarily to provide sufficient cement slurry for the twin-wheel milling equipment 1. When both pumps are operating simultaneously, each pump provides half the target slurry flow rate. If one pump stops or fails, the other pump can continue spraying at the target slurry flow rate. Furthermore, it also includes an air supply component, which includes an air compressor 9 and an air supply pipe 3 connected to the high-pressure gas output port of the air compressor 9, and the end of the air supply pipe 3 away from the high-pressure gas output port is connected to the spraying port 11.

[0034] Furthermore, the slurry supply pump 6 also has a first slurry inlet, which is connected to a slurry storage barrel 4 through a first slurry inlet pipe, and the slurry storage barrel 4 is connected to an upstream slurry making station through a second slurry inlet pipe.

[0035] Specifically, it also includes a power distribution cabinet 10, which is used to supply power to the air compressor 9, the frequency conversion cabinet of the slurry supply pump 6, the drive motor 41 of the slurry storage barrel 4, and the industrial control cabinet 8.

[0036] In a preferred embodiment, if Figure 3 As shown, the slurry storage barrel 4 has a storage space for storing cement slurry, and a cover plate 42 is provided on the top of the slurry storage barrel 4. A drive motor 41 is installed on the cover plate 42. The output shaft of the drive motor 41 is connected to a stirring blade, and the stirring blade 43 is used to stir the cement slurry in the storage space.

[0037] Furthermore, the slurry storage barrel 4 is provided with an upper liquid level gauge 44 , a middle liquid level gauge 45 and a lower liquid level gauge 46 in sequence along its height direction.

[0038] Specifically, the slurry storage barrel 4 is equipped with a drive motor 41 and a stirring blade for preventing the cement slurry from settling. In order to prevent the slurry from overflowing or the box from being empty, an upper liquid level gauge 44, a middle liquid level gauge 45 and a lower liquid level gauge 46 are respectively installed at the upper, middle and lower parts of the slurry storage barrel 4. Among them, the upper liquid level gauge 44 is turned on to indicate a high liquid level, the middle liquid level gauge 45 signal is disconnected to prompt that the slurry should be replenished, and the lower liquid level gauge 46 signal is disconnected to indicate an empty box, and abnormal processing should be performed.

[0039] In a preferred embodiment, a flow meter 5 and a pressure sensor 7 are provided in the slurry supply pipeline 2 .

[0040] Specifically, each slurry supply pipeline 2 is provided with a flow meter 5 and a pressure sensor 7. The flow meter 5 monitors the actual slurry supply flow flowing through the slurry supply pipeline 2, and the pressure sensor 7 is used to collect the pressure in the slurry supply pipeline 2. The collection module is also configured to receive the readings of the flow meter 5 and the pressure sensor 7.

[0041] Example 2 Based on Example 1, this embodiment proposes a control method for the intelligent slurry supply system of a double-wheel milling device 1. Based on the intelligent slurry supply system of the double-wheel milling device 1 as described in Example 1, the control method includes the following steps: When the double-wheel milling device 1 is in the excavation state, the preset construction parameters are obtained, and the real-time excavation speed of the milling wheel is collected in real time at intervals of a first preset time length; Calculate the corresponding target slurry flow rate based on the preset construction parameters and the real-time excavation speed, and record the target slurry flow rate in a project record table, wherein the project record table includes multiple excavation states and multiple elevation positions corresponding to each excavation state, and each elevation position also corresponds to the real-time excavation speed and the target slurry flow rate; According to the target slurry supply flow rate, the slurry supply pump 6 is controlled to supply slurry to the grouting port 11 at the target slurry supply flow rate when the double-wheel milling device 1 is in the excavation state; After the excavation is completed, the double-wheel milling device 1 switches to the lifting state, and calls the engineering record table to obtain multiple elevation positions corresponding to the excavation state corresponding to the current lifting state, and the target slurry flow rate corresponding to each elevation position; Specifically, the elevation position is the depth from the ground. After each excavation state, the double-wheel milling device 1 needs to be pulled out, so the excavation and the corresponding lifting are completed, which is considered a complete process.

[0042] According to the target slurry supply flow rate corresponding to each elevation position, the upper slurry supply flow rate corresponding to each elevation position is obtained; The slurry supply pump 6 is controlled to provide slurry flow corresponding to different elevation positions, and to supply slurry to the spraying port 11 when the double-wheel milling device 1 is in an upward state.

[0043] In a preferred embodiment, the method of controlling the slurry supply pump 6 to supply slurry to the spraying port 11 at the target slurry supply flow rate according to the target slurry supply flow rate specifically includes the following steps: According to the target slurry supply flow rate corresponding to the current slurry supply cycle, the slurry supply pump 6 is controlled to supply slurry to the spraying port 11 at the target slurry supply flow rate during the current slurry supply cycle; the duration of the current slurry supply cycle is the first preset duration; Specifically, by setting fixed-duration slurry supply cycles, the slurry supply process can be managed in stages. Within each cycle, slurry supply is controlled according to the target slurry flow rate, enabling more precise adjustment of slurry supply to accommodate real-time changes in construction parameters such as milling wheel speed.

[0044] After controlling the slurry supply pump 6 to supply slurry to the spray port 11 at the target slurry supply flow rate corresponding to the current slurry supply cycle according to the target slurry supply flow rate, the method further includes the following steps: Determine whether the two slurry supply pumps 6 supply slurry simultaneously during the current slurry supply cycle; If yes, two actual slurry supply flow rates are obtained based on the flowmeters 5 in the two slurry supply pipes 2; the two actual slurry supply flow rates are respectively the cement slurry flow rates actually flowing through each of the slurry supply pipes 2 when the slurry supply pump 6 supplies slurry to the spraying port 11 via the slurry supply pipe 2; If the deviations of the two actual slurry supply flow rates from half of the target slurry supply flow rate are greater than a first preset threshold, determining whether the two actual slurry supply flow rates are the same; If yes, a first warning signal is issued, the first warning signal is used to indicate that the output power of the slurry supply pump 6 is incorrect; if no, a target slurry supply pump 6 is determined, the target slurry supply pump 6 being the slurry supply pump 6 corresponding to the slurry supply pipeline 2 whose actual slurry supply flow rate is closer to half of the target slurry supply flow rate; Specifically, when two slurry supply pumps 6 are operating simultaneously, each pump should theoretically provide half of the target slurry flow rate. Monitoring the actual slurry flow rate with the flow meter 5 allows for timely detection of deviations between the actual slurry supply and the theoretical value. Excessive deviations indicate a potential problem with the slurry supply system, potentially indicating a problem with the overall output power of the slurry supply pumps 6. This generates an early warning for prompt inspection and adjustment.

[0045] The target slurry supply pump 6 is controlled to supply slurry to the spray port 11 at the target slurry supply flow corresponding to the next slurry supply cycle in the next slurry supply cycle; the next slurry supply cycle is a slurry supply cycle after the current slurry supply cycle and adjacent to the current slurry supply cycle.

[0046] Specifically, if the two actual slurry supply flow rates are different, it may indicate that during long-term use, one slurry supply pipeline 2 is blocked due to sediment. At this time, for the sake of operation continuity and accuracy, the slurry supply pump 6 with an actual slurry supply flow rate closer to half of the target slurry supply flow rate (indicating that the slurry supply pipeline 2 is unobstructed) is selected as the target slurry supply pump 6, and the slurry supply is focused on in the next slurry supply cycle. At the same time, the slurry supply pump 6 corresponding to the other slurry supply pipeline 2 can be closed, and the other slurry supply pipeline 2 can be cleaned. In this way, the slurry supply system can be gradually adjusted to make it closer to the ideal slurry supply state.

[0047] Specifically, the actual slurry supply flow rate is less than the target slurry supply flow rate: a control signal is sent to the two variable frequency slurry supply pumps 6 to accelerate the variable frequency motors of the slurry supply pumps 6 until the slurry supply flow rate and the target slurry supply flow rate are less than 0.5 L / min; The actual slurry supply flow rate is greater than the target slurry supply flow rate: a control signal is sent to the two variable frequency slurry supply pumps 6 to decelerate the variable frequency motors until the slurry supply flow rate and the target slurry supply flow rate are less than 0.5 L / min; Real-time statistics are collected for the target slurry flow rate, with construction data saved to a designated folder every five minutes. A construction report and a log are generated. After each trench section is completed (as the milling wheel's excavation depth changes from 0 meters to a certain depth and then returns to 0 meters), the printer in the industrial control cabinet 8 automatically prints the report. If the pressure and flow rates of the two slurry supply pipelines 2 are inconsistent, this may indicate a connection problem. The industrial control system will display a pop-up warning, prompting the on-duty personnel to conduct an inspection as soon as possible.

[0048] This article uses specific examples to illustrate the principles and implementation methods of this application. The description of the above embodiments is only used to help understand the method and core ideas of this application. The above is only the preferred implementation method of this application. It should be pointed out that due to the limitations of textual expression, there are objectively infinite specific structures. For ordinary technicians in this technical field, without departing from the principles of the present invention, they can also make several improvements, modifications or changes, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be regarded as the scope of protection of this application.

Claims

1. An intelligent slurry supply system for deep milling cement soil anti-seepage wall construction, used for supplying slurry to a double-wheel milling device (1), wherein the double-wheel milling device (1) has a milling wheel; characterized in that: The slurry supply system includes: A slurry supply assembly, the slurry supply assembly comprising at least one slurry supply pump (6), the slurry supply pump (6) having a slurry supply port, the slurry supply port being connected to a slurry supply pipeline (2), the slurry supply pipeline (2) being connected to a slurry spraying port (11) of the milling wheel at an end away from the slurry supply port; A collection module, the collection module is configured to obtain the preset construction parameters and collect the real-time excavation speed of the milling wheel in real time at every first preset time interval; the preset construction parameters at least include effective groove length, wall thickness, stratum density, theoretical cement ratio, cement density and water-cement ratio; A control module, the control module being electrically connected to the acquisition module and the slurry supply pump (6) respectively, the control module being configured to calculate a corresponding target slurry supply flow rate according to the preset construction parameters and the real-time excavation speed, so as to control the slurry supply pump (6) to supply slurry to the grouting port (11) according to the target slurry supply flow rate.

2. The intelligent slurry supply system for deep mixing and milling cement soil anti-seepage wall construction according to claim 1 is characterized by: The slurry supply assembly comprises two slurry supply pumps (6). When the operating states of the two slurry supply pumps (6) are both normal, the control module controls the two slurry supply pumps (6) to supply slurry to the spraying port (11) at half of the target slurry supply flow rate.

3. The intelligent slurry supply system for deep mixing and milling cement soil anti-seepage wall construction according to claim 2 is characterized by: When there is only one slurry supply pump (6) in normal operation, the control module controls the slurry supply pump (6) in normal operation to supply slurry to the spraying port (11) at the target slurry supply flow rate.

4. The intelligent slurry supply system for deep mixing and milling cement soil anti-seepage wall construction according to claim 1 is characterized by: It also comprises an air supply assembly, the air supply assembly comprising an air compressor (9) and an air supply pipeline (3) connected to a high-pressure gas output port of the air compressor (9), the end of the air supply pipeline (3) away from the high-pressure gas output port being connected to the spraying port (11).

5. The intelligent slurry supply system for deep mixing and milling cement soil anti-seepage wall construction according to claim 1 is characterized by: The slurry supply pump (6) further comprises a first slurry inlet, the first slurry inlet is connected to a slurry storage barrel (4) via a first slurry inlet pipeline, and the slurry storage barrel (4) is connected to an upstream slurry making station via a second slurry inlet pipeline.

6. The intelligent slurry supply system for deep mixing and milling cement soil anti-seepage wall construction according to claim 5 is characterized by: The slurry storage barrel (4) has a storage space for storing cement slurry. A cover plate (42) is provided on the top of the slurry storage barrel (4). A driving motor (41) is mounted on the cover plate (42). An output shaft of the driving motor (41) is connected to a stirring blade (43). The stirring blade (43) is used to stir the cement slurry in the storage space.

7. The intelligent slurry supply system for deep mixing and milling cement soil anti-seepage wall construction according to claim 1 is characterized by: A flow meter (5) and a pressure sensor (7) are provided in the slurry supply pipeline (2).

8. The intelligent slurry supply system for deep mixing and milling cement soil anti-seepage wall construction according to claim 5 is characterized by: An upper liquid level gauge (44), a middle liquid level gauge (45) and a lower liquid level gauge (46) are sequentially arranged on the slurry storage barrel (4) along its height direction.

9. A control method for an intelligent slurry supply system for deep mixing and milling cement soil anti-seepage wall construction, based on the intelligent slurry supply system for deep mixing and milling cement soil anti-seepage wall construction according to any one of claims 1 to 8, characterized in that: The control method comprises the following steps: When the double-wheel milling device (1) is in a digging state, the preset construction parameters are obtained, and the real-time digging speed of the milling wheel is collected in real time at intervals of a first preset time length; According to the preset construction parameters and the real-time excavation speed, the corresponding target slurry supply flow rate is calculated, and the target slurry supply flow rate is recorded in the engineering record table, the engineering record table includes multiple excavation states, and multiple elevation positions corresponding to each excavation state, and each elevation position also corresponds to the real-time excavation speed and the target slurry supply flow rate; According to the target slurry supply flow rate, controlling the slurry supply pump (6) to supply slurry to the grouting port (11) at the target slurry supply flow rate when the double-wheel milling device (1) is in a tunneling state; After the excavation is completed, the double-wheel milling device (1) switches to a lifting state, and retrieves the engineering record table to obtain a plurality of elevation positions corresponding to the excavation state corresponding to the current lifting state, and a target slurry supply flow rate corresponding to each elevation position; According to the target slurry supply flow rate corresponding to each elevation position, the upper slurry supply flow rate corresponding to each elevation position is obtained; The slurry supply pump (6) is controlled to provide the corresponding upper slurry flow rate at different elevation positions, and to supply slurry to the grouting port (11) when the double-wheel milling device (1) is in an upward lifting state.

10. The control method of the intelligent slurry supply system for deep mixing and milling cement soil anti-seepage wall construction according to claim 9, characterized in that: According to the target slurry supply flow rate, controlling the slurry supply pump (6) to supply slurry to the spraying port (11) at the target slurry supply flow rate specifically comprises the following steps: According to the target slurry supply flow rate corresponding to the current slurry supply cycle, the slurry supply pump (6) is controlled to supply slurry to the slurry spraying port (11) at the target slurry supply flow rate during the current slurry supply cycle; the duration of the current slurry supply cycle is the first preset duration; After the slurry supply pump (6) is controlled to supply slurry to the grouting port (11) at the target slurry supply flow rate corresponding to the current slurry supply cycle according to the target slurry supply flow rate, the method further comprises the following steps: Determining whether the two slurry supply pumps (6) supply slurry simultaneously during the current slurry supply cycle; If so, based on the flowmeters in the two slurry supply pipes (2), two actual slurry supply flow rates are obtained respectively; the two actual slurry supply flow rates are respectively the cement slurry flow rates actually flowing through each of the slurry supply pipes (2) when the slurry supply pump (6) supplies slurry to the spraying port (11) via the slurry supply pipes (2); If the deviations of the two actual slurry supply flow rates from half of the target slurry supply flow rate are greater than a first preset threshold, determining whether the two actual slurry supply flow rates are the same; If yes, a first warning signal is issued, the first warning signal is used to indicate that the output power of the slurry supply pump (6) is incorrect; if no, a target slurry supply pump (6) is determined, the target slurry supply pump (6) being the slurry supply pump (6) corresponding to the slurry supply pipeline (2) whose actual slurry supply flow rate is closer to half of the target slurry supply flow rate; The target slurry supply pump (6) is controlled to supply slurry to the slurry spraying port (11) at a target slurry supply flow rate corresponding to a next slurry supply cycle in the next slurry supply cycle; the next slurry supply cycle is a slurry supply cycle after the current slurry supply cycle and adjacent to the current slurry supply cycle.

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