Self-adaptive guide pipe burial depth regulation and control system and method for underground diaphragm wall pouring construction

Abstract

The invention discloses a self-adaptive guide pipe burial depth regulation and control system and method for underground diaphragm wall pouring construction. The system comprises a concrete pump truck, a guide pipe, a guide pipe lifting device, a monitoring module and a guide pipe burial depth control module. The conduit lifting device is used for lifting the conduit; the guide pipe burial depth control module is used for controlling the pump pipe lifting device to work; a concrete pump, a pump pipe, a pump pipe lifting device and a pump pipe control module are arranged on the concrete pump truck; the pump pipe lifting device is used for lifting the pump pipe; the pump pipe control module is used for controlling the concrete pump and the pump pipe lifting device to work; the monitoring module monitors and collects state data related to the depth of the pump pipe inserted into the guide pipe, the concrete liquid level elevation and the guide pipe burial depth parameter in real time. And the conduit burial depth control module receives and processes monitoring data from the monitoring module, shares data with the pump pipe control module, and outputs a signal to control the conduit lifting device to lift the conduit, so that the conduit burial depth is kept within a set range. The method is suitable for high-depth continuous wall pouring underground engineering.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, and in particular to an adaptive duct burial depth control system and method for underground continuous wall casting construction. Background Technology

[0002] Currently, diaphragm walls are widely used in urban underground engineering and water conservancy projects. As an important seepage prevention structure, they play a crucial role in water conservancy, environmental protection, and urban infrastructure construction. Hydraulic seepage barriers are typically used to prevent groundwater leakage, ensuring water source security and the stability of the surrounding environment. They are widely used in dams, dikes, groundwater level control, and reservoirs. However, due to the complexity of the construction environment and the high requirements for seepage prevention, the construction quality of hydraulic seepage barriers directly affects the seepage prevention effect and long-term safety of the project.

[0003] Traditional diaphragm wall construction typically employs a crane and tremie pipes to lift sections one by one. However, this method has significant drawbacks in the construction of hydraulic cutoff walls. To reduce the frequency of pipe lifting, workers often maintain a large burial depth (usually exceeding 10m), leading to problems such as insufficient concrete fluidity, segregation, grout mixing, and pipe blockage. These issues consequently affect the wall's seepage prevention performance and overall structural quality. Especially in deeply buried hydraulic cutoff walls, the transition of the concrete from a fluid to a plastic state during the deep pouring process causes the first poured concrete to solidify prematurely at the top. The high resistance during the lifting of subsequent pours and the unevenness of the concrete during pouring make it difficult to control the pouring quality, potentially leading to decreased seepage prevention performance and even serious problems such as leakage and wall cracks.

[0004] Furthermore, existing construction methods rely on manual operation, leading to inaccurate control of pipe burial depth. Workers often reduce the frequency of pipe pulling due to tedious operations or a desire for convenience. This non-standard manual operation further increases the complexity and risk of construction, reduces construction efficiency, and increases the labor intensity and safety hazards for workers.

[0005] Therefore, in the construction of hydraulic seepage barriers and other underground structures, how to accurately control the burial depth of the guide pipe, ensure uniform concrete pouring, and avoid problems such as segregation and uneven lifting that exist in traditional methods has become a technical problem that urgently needs to be solved in the industry.

[0006] This invention proposes an adaptive duct burial depth control system and method for ultra-deep underground continuous wall construction. It aims to optimize the concrete pouring process by adjusting the duct burial depth through pump pipe raising and lowering and real-time control, thereby ensuring the construction quality of hydraulic anti-seepage walls and other underground engineering structures, reducing defects in manual operation, and improving construction efficiency and safety. It has broad application prospects. Summary of the Invention

[0007] This invention provides an adaptive guide pipe burial depth control system and method for underground continuous wall casting construction to solve the technical problems existing in the prior art.

[0008] The technical solution adopted by this invention to solve the technical problems existing in the prior art is as follows:

[0009] An adaptive guide pipe burial depth control system for underground continuous wall pouring construction, the system includes a concrete pump truck, a guide pipe, a guide pipe lifting device, a monitoring module and a guide pipe burial depth control module; The guide pipe is used to guide concrete during concrete pouring operations; the guide pipe lifting device is used to raise and lower the guide pipe; it is installed on the pouring construction platform; the guide pipe burial depth control module is used to control the operation of the pump pipe lifting device. A concrete pump truck is used to transport concrete; it is equipped with a concrete pump, a pump pipe, a pump pipe lifting device, and a pump pipe control module; the concrete pump is used to continuously transport concrete along the pipeline using pressure; the pump pipe is used to transport concrete from the concrete pump truck to the pouring location, and its output end is inserted into the conduit; the pump pipe lifting device is used to raise and lower the pump pipe; the pump pipe control module is used to control the operation of the concrete pump and the pump pipe lifting device. The monitoring module is used to monitor and collect status data in real time that are associated with parameters such as the depth of the pump pipe inserted into the guide tube, the concrete liquid level, and the burial depth of the guide tube. The conduit burial depth control module receives monitoring data from the monitoring module, processes it to obtain the following data: the depth of the pump pipe inserted into the conduit, the concrete liquid level elevation, the conduit burial depth, and the distance between the concrete liquid level and the top of the underground continuous wall. It sends the processed data to the pump pipe control module and outputs a signal to control the conduit lifting device to raise and lower the conduit based on the processed data, so that the conduit burial depth is maintained within the set range. Based on data from the guide pipe burial depth control module, the pump pipe control module outputs signals to control the pump pipe lifting device to raise and lower the pump pipe and start and stop the concrete pump.

[0010] Furthermore, the system also includes a pump pipe auxiliary support device for keeping the pump pipe upright during pouring. The pump pipe auxiliary support device includes several sections of arc-shaped protective plates that are hinged in sequence. The arc-shaped inner surface of the arc-shaped protective plate matches the outer surface of the pump pipe. The arc-shaped protective plate covers the outer surface of the pump pipe. Each hinge is provided with a baffle to restrict the arc-shaped protective plate from flipping outward.

[0011] Furthermore, each baffle is equipped with a magnet, and the monitoring module includes a magnetic induction counter set at the top of the conduit, which detects the depth of the pump tube inserted into the conduit by the count value of the magnetic induction counter.

[0012] Furthermore, the catheter lifting device includes at least one lifting device and multiple openable clamping arms. Each clamping arm includes a pair of clamps, which clamp the catheter when closed. The multiple clamping arms are divided into two groups, referred to as group A clamping arms and group B clamping arms. The catheter burial depth control module outputs signals to control the lifting and lowering of the lifting part of the lifting device and the opening and closing of the clamps of each group of clamping arms. Group A clamping arms are linked with the lifting end of a certain lifting device. When the catheter needs to be lifted, the clamps of group A clamping arms close and move up and down with the lifting end of the lifting device, while the clamps of group B clamping arms open and remain stationary. When the lifting end of the lifting device moves into position or its upper and lower travel limit switch is activated, the clamps of group B clamping arms close, and then the clamps of group A clamping arms are released, causing the lifting end of the lifting device to move in the opposite direction and reset. The inner side of the clamps is provided with rubber pads, and the outer surface of the catheter is provided with anti-slip textures.

[0013] Furthermore, the catheter lifting device includes two sets of lifters, namely set A lifter and set B lifter. Set A clamping arm is installed on the lifting end of set A lifter, and set B clamping arm is installed on the lifting end of set B lifter. When the catheter needs to be lifted or lowered, set A lifter and set B lifter alternately lift, lower, and reset.

[0014] Furthermore, the catheter includes multiple fixed-length tubes and multiple adjustable tubes of different lengths; the upper end of the fixed-length tube or the adjustable tube is provided with a flared port; the lower end of the fixed-length tube or the adjustable tube is provided with an annular protrusion 10-15cm away from the port, the diameter of the annular protrusion being equal to the outer diameter of the upper end port; the lower end port of the fixed-length tube or the adjustable tube is inserted into the upper end port of the fixed-length tube or the adjustable tube, and an annular clamp is provided at the insertion point, the inner side of the annular clamp being provided with a U-shaped groove covering the annular protrusion and the upper end interface.

[0015] Furthermore, the regulating pipe is composed of two detachable semi-ring pipes.

[0016] Furthermore, the monitoring module includes a laser rangefinder and / or an ultrasonic rangefinder; the laser rangefinder and / or ultrasonic rangefinder are used to measure the distance between the concrete liquid surface, the top of the conduit, and the reference point and reference plane of the vertical section of the pump pipe.

[0017] This invention also provides an adaptive guide pipe burial depth control method for diaphragm wall casting construction using the aforementioned adaptive guide pipe burial depth control system, the method comprising the following steps: Given the known reference elevation, diaphragm wall trench depth, diaphragm wall design top elevation, duct length, and the length from the reference point of the vertical section of the pump pipe to the pump pipe outlet; during concrete pouring, the duct depth control module uses real-time data detected by the monitoring module and known data to calculate in real-time the concrete surface elevation, duct depth, pump pipe insertion depth into the duct, and distance between the concrete surface and the design top surface of the diaphragm wall; its output signal controls the duct lifting device to adjust the duct depth. When the distance between the concrete surface and the top of the diaphragm wall is greater than 100m, the duct depth embedded in the concrete surface is within the range of 2.0m to 3.0m; when the distance is between 50m and 100m, the duct depth is within the range of 2.0m to 2.5m; when the distance is less than or equal to 50m, the duct depth is within the range of 2.0m to 3.0m. The pump pipe control module receives the following information in real time from the guide pipe burial depth control module: concrete liquid level elevation, pump pipe insertion depth into the guide pipe, and distance between the concrete liquid level and the designed top surface of the diaphragm wall. When the distance between the concrete liquid level and the designed top surface of the diaphragm wall is greater than 30m, it outputs a signal to control the pump pipe lifting device to raise or lower the pump pipe, so that the height of the pump pipe outlet from the concrete liquid level is within the range of 0.5m to 1.5m. When the distance between the concrete liquid level and the designed top surface of the diaphragm wall is less than or equal to 30m, the pump pipe height is adjusted using the following two methods: The first method is to increase the external head difference by raising the pump pipe outlet end above the concrete liquid surface by 1.5m to 1.8m. The second method involves inserting the pump pipe below the concrete surface in the conduit, with the height below the concrete surface ranging from 1.5m to 1.8m. This utilizes some of the pumping kinetic energy to directly transfer it to the lower concrete, further enhancing the diffusivity of the upper concrete section.

[0018] Furthermore, the method includes the following steps: Let: the designed height of the diaphragm wall be H, and the distance between the concrete liquid level and the designed top surface of the diaphragm wall during pouring be L. When L≥120m, according to the distance between the concrete liquid level and the designed top surface of the diaphragm wall, the pouring process is divided into three stages: the initial pouring stage, corresponding to 2 / 3H < L ≤ H; the middle pouring stage, corresponding to 1 / 3H < L ≤ 2 / 3H; the later pouring stage, corresponding to 0 < L ≤ 1 / 3H; for different stages, adjust the set values of the catheter burial depth range and the height range of the pump pipe outlet relative to the concrete liquid level. The catheter burial depth control module and the pump pipe control module output signals to the control pump pipe lifting device and the catheter lifting device according to the information detected by the monitoring module, so that the distance between the pump pipe outlet and the concrete liquid level and the catheter burial depth are maintained within the corresponding set value ranges; adjust the set values of the catheter burial depth range and the distance range between the pump pipe outlet and the concrete liquid level in each stage according to the following method: Initial pouring stage: the set value range of the catheter burial depth is 2.0m - 3.0mm: the set value range of the height of the pump pipe outlet relative to the concrete liquid level is 1.0m - 1.5m; Middle pouring stage: the set value range of the catheter burial depth is adjusted to 2.0m - 2.5m, and the set value range of the height of the pump pipe outlet relative to the concrete liquid level is adjusted to 1.0m - 1.5m; Later pouring stage: gradually adjust the set value range of the catheter burial depth from 2.0m - 2.5m to 2.0m - 3.0m; When the distance between the concrete liquid level and the designed top surface of the diaphragm wall is greater than 30m, the set value range of the height of the pump pipe outlet relative to the concrete liquid level is adjusted to 1.0m - 1.5m; when the distance between the concrete liquid level and the designed top surface of the diaphragm wall is less than or equal to 30m, the following two modes are adopted for adjusting the pump pipe height: The first mode: lift the pump pipe height, and the set value range of the height of the pump pipe outlet relative to the concrete liquid level is 1.5m - 1.8m; The second mode: adjust the set value range of the distance between the pump pipe outlet and the concrete liquid level from a positive value to a negative value, and adjust the set value range of the height of the pump pipe outlet relative to the concrete liquid level to -1.5m - -0.5m. That is, the pump pipe outlet is located below the concrete liquid level and the distance from the concrete liquid level is 0.5m - 1.5m.

[0019] The advantages and positive effects of the present invention are: Improve the uniformity of concrete pouring: By adjusting the burial depth of the catheter in real time, ensure that the concrete liquid level rises evenly from bottom to top, avoiding problems such as uneven concrete pouring, segregation, slurry mixing, and pipe blockage in the traditional method. This system can ensure the fluidity and diffusibility of concrete throughout the pouring process, significantly improving the wall quality, especially in projects with special requirements such as hydraulic cut-off walls, ensuring the anti-seepage effect and structural integrity.

[0020] Reduced reliance on manual operation: This system reduces dependence on manual operation by automatically controlling the burial depth of the conduit, avoiding problems such as excessive burial depth and untimely operation caused by improper manual operation. Automated adjustment of pump pipe lifting and lowering reduces worker workload and operational errors, thus improving construction safety.

[0021] Improved construction efficiency and safety: This system boasts a high level of automation, simplifying the construction process, reducing the number of on-site operators, and significantly improving construction efficiency. Simultaneously, the automatic control system reduces human intervention and errors, lowering safety hazards during construction and enhancing overall construction safety.

[0022] Precise control of conduit burial depth: This invention, through precise real-time monitoring and calculation, can maintain the conduit burial depth within the range of 2-3m, with a maximum of no more than 3m. This precise control effectively avoids problems such as poor concrete fluidity and uneven lifting caused by excessive or insufficient burial depth in traditional methods.

[0023] Reduced risk of quality defects: By avoiding problems such as uneven lifting and premature setting during concrete pouring, this invention greatly reduces the risk of quality defects such as voids, cracks, and leakage, and improves the overall stability and impermeability of the structure.

[0024] Wide applicability: The technical solution of this invention is not only applicable to the construction of hydraulic seepage barriers, but can also be widely applied to the construction of other diaphragm walls. Whether in deep-buried, high-requirement underground projects or in special construction environments requiring seepage prevention, this system can provide an effective solution, possessing strong applicability and promotional value.

[0025] This invention can be applied to scenarios requiring continuous wall construction in fields such as underground structures, underground engineering, and water conservancy projects. It aims to improve construction quality, efficiency, and safety, and reduce problems caused by defects in manual operation. This technical solution has wide applicability and is particularly suitable for projects with greater depth and higher quality requirements. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the construction status of an adaptive guide pipe burial depth control system for underground continuous wall casting construction according to the present invention.

[0027] Figure 2 This is a three-dimensional structural diagram of an adaptive guide pipe burial depth control system for underground continuous wall casting construction according to the present invention.

[0028] Figure 3 This is a front view of the adaptive guide pipe burial depth control system for underground continuous wall casting construction, as described in this invention, located on the casting construction platform.

[0029] Figure 4 This is a schematic diagram of a catheter lifting device according to the present invention.

[0030] Figure 5 This is a schematic diagram of a pump pipe auxiliary support device according to the present invention.

[0031] Figure 6 This is a schematic diagram of the extended state of a pump pipe auxiliary support device according to the present invention. The arrows indicate the extension direction of the pump pipe auxiliary support device.

[0032] Figure 7 This is a schematic diagram of the coiled state of a pump pipe auxiliary support device according to the present invention. The arrows indicate the coiling direction of the pump pipe auxiliary support device.

[0033] Figure 8 This is a schematic diagram of the state of the pump tube inserted into the conduit according to the present invention.

[0034] Figure 9 This is a schematic diagram of a pump pipe inserted into a conduit in a state below the concrete liquid level according to the present invention.

[0035] In the diagram: 1. Concrete pump truck body; 2. Pump pipe lifting device; 3. Pump pipe; 4. Guide pipe; 5. Lifter; 6. Pouring platform; 7. Clamping arm; 8. Hinge; 9. Curved guard plate; 10. Baffle; 11. Stop block; 12. Laser rangefinder; 13. Reflector; 14. Concrete surface. Detailed Implementation

[0036] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0037] In the description of this invention, the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," and "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and do not require the invention to be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on the invention. The terms "connected" and "linked" used in this invention should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a direct connection or an indirect connection through intermediate components; or an electrical connection or signal transmission. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0038] Please see Figures 1 to 9 An adaptive guide pipe burial depth control system for underground continuous wall pouring construction, the system includes a concrete pump truck, guide pipe 4, guide pipe lifting device, monitoring module and guide pipe burial depth control module. The guide pipe 4 is used to guide the concrete during concrete pouring operations; the guide pipe lifting device is used to lift the guide pipe 4; it is set on the pouring construction platform 6; the guide pipe burial depth control module is used to control the operation of the pump pipe lifting device 2. A concrete pump truck is used to transport concrete; it is equipped with a concrete pump, a pump pipe 3, a pump pipe lifting device 2, and a pump pipe control module; the concrete pump is used to continuously transport concrete along the pipeline using pressure; the pump pipe 3 is used to transport concrete from the concrete pump truck to the pouring location, and its output end is inserted into the conduit 4; the pump pipe lifting device 2 is used to lift the pump pipe 3; the pump pipe control module is used to control the operation of the concrete pump and the pump pipe lifting device 2. The monitoring module is used to monitor and collect status data in real time related to the depth of the pump pipe 3 inserted into the guide tube 4, the concrete liquid level elevation, and the burial depth of the guide tube. The conduit burial depth control module receives monitoring data from the monitoring module, processes it to obtain the following data: the depth of pump pipe 3 inserted into conduit 4, the concrete liquid level elevation, the conduit burial depth, and the distance between the concrete liquid level 14 and the top of the underground continuous wall. It sends the processed data to the pump pipe control module and outputs a signal to control the conduit lifting device to raise and lower conduit 4 according to the processed data, so that the conduit burial depth is kept within the set range. Based on data from the guide pipe burial depth control module, the pump pipe control module outputs signals to control the pump pipe lifting device 2 to lift the pump pipe 3 and to start and stop the concrete pump.

[0039] The concrete pump truck also includes a concrete pump truck body 1, which includes a driver's cab, a concrete liquid container, and a mixing device. The pump pipe lifting device 2 is located on the concrete pump truck body 1.

[0040] The pump pipe lifting device 2 can be a crane, and the pipe lifting device can be constructed from hydraulic cylinders, electric cylinders, etc.

[0041] Preferably, the system may further include a pump pipe auxiliary support device for keeping the pump pipe 3 upright during pouring. The pump pipe auxiliary support device may include several sections of arc-shaped guard plates 9 that are sequentially hinged by hinges 8. The arc-shaped inner surface of the arc-shaped guard plate 9 matches the outer surface of the pump pipe 3. The arc-shaped guard plate 9 covers the outer surface of the pump pipe 3. Each hinge 8 may be provided with a baffle 10 to restrict the arc-shaped guard plate 9 from flipping outward.

[0042] The pump pipe auxiliary support device can be used to keep the pump pipe 3 upright, and can also be used during the pouring process to insert the outlet section hose of the pump pipe 3 below the concrete surface in the guide pipe 4 to improve the fluidity and diffusion effect of the upper section of concrete.

[0043] The pump pipe 3 is straightened by the pressure of concrete flow during pouring. The pump pipe auxiliary support device helps the pump pipe 3 to be perpendicular to the inside of the pouring guide 4. The combination of the baffle 10 and the stop block 11 on the arc-shaped guard plate 9 can limit the pump pipe 3 to swing in the opposite direction, making the pressure more concentrated. When storing, the arc-shaped guard plate 9 can be bent and rolled up.

[0044] Preferably, each baffle 10 may be provided with a magnet, and the monitoring module may include a magnetic induction counter disposed at the top of the conduit 4, and the depth of the pump tube 3 inserted into the conduit 4 may be detected by the count value of the magnetic induction counter.

[0045] Preferably, the catheter lifting device may include at least one lifting device 5 and multiple openable clamping arms 7. Each clamping arm 7 includes a pair of clamps, which clamp the catheter 4 when closed. The multiple clamping arms 7 are divided into two groups, referred to as group A clamping arms 7 and group B clamping arms 7, respectively. The catheter burial depth control module outputs signals to control the lifting and lowering of the lifting part of the lifting device 5 and the opening and closing of the clamps of each group of clamping arms 7. Group A clamping arms 7 are linked with the lifting end of a certain lifting device 5. When the catheter 4 needs to be lifted, the clamps of group A clamping arms 7 are closed and rise and fall with the lifting end of the lifting device 5, while the clamps of group B clamping arms 7 are opened and remain stationary. When the lifting end of the lifting device 5 moves into position or its upper and lower travel limit switch is activated, the clamps of group B clamping arms 7 are closed, and then the clamps of group A clamping arms 7 are released, allowing the lifting end of the lifting device 5 to move in the opposite direction and reset. The inner side of the clamps is provided with rubber pads, and the outer surface of the catheter 4 is provided with anti-slip textures. Repeating the above process allows for continuous lifting and lowering of the catheter 4.

[0046] Preferably, the catheter lifting device includes two sets of lifting devices 5, namely set A lifting device 5 and set B lifting device 5. Set A clamping arm 7 is installed at the lifting end of set A lifting device 5, and set B clamping arm 7 is installed at the lifting end of set B lifting device 5. When the catheter 4 needs to be lifted, set A lifting device 5 and set B lifting device 5 alternately lift and reset.

[0047] The B-group clamping arm 7 can be kept stationary, or the B-group clamping arm 7 can be installed separately from the A-group clamping arm 7 on the lifting ends of the two sets of lifting devices 5. The two sets of lifting devices 5 alternately lift and reset, corresponding to the A-group clamping arm 7 and the B-group clamping arm 7 alternately clamping the conduit 4, so that the conduit 4 continuously lifts and lowers.

[0048] Preferably, to prevent the catheter 4 from slipping due to its own weight, the friction between the outer surface of the catheter 4 and the inner surface of the clamp can be increased. A rubber pad can be provided on the inner side of the clamp, and anti-slip texture can be provided on the outer surface of the catheter 4. The anti-slip texture can be formed by prismatic protrusions or annular protrusions. A limiting protrusion can also be provided on the outer side of the catheter 4, so that the limiting protrusion is higher than the inner surface of the clamp after it is closed.

[0049] Preferably, the conduit 4 includes multiple fixed-length tubes and multiple adjustable tubes of different lengths; the upper end of the fixed-length tube or the adjustable tube is provided with a flared port; the lower end of the fixed-length tube or the adjustable tube is provided with an annular protrusion 10-15cm away from the port, the diameter of the annular protrusion being equal to the outer diameter of the upper end port; the lower end port of the fixed-length tube or the adjustable tube is inserted into the upper end port of the fixed-length tube or the adjustable tube, and an annular clamp is provided at the insertion point, the inner side of the annular clamp being provided with a U-shaped groove covering the annular protrusion and the upper end interface.

[0050] The annular protrusion serves as a limiting element during insertion. When the lower end of the fixed-length or adjusting tube is inserted into its upper end, the annular protrusion prevents further insertion, thus fixing the insertion depth. Furthermore, when multiple fixed-length or adjusting tube sections are connected, it is used to clamp them with the annular clamp. Under the clamping action of the annular clamp, the lower end of the fixed-length or adjusting tube is tightly connected to its upper end, preventing separation.

[0051] Multiple fixed-length tubes and multiple adjustable tubes can be combined to form conduits 4 of different lengths. This facilitates adjustment of the total length of the conduit 4.

[0052] Preferably, the regulating tube is composed of two detachable semi-ring tubes. The two semi-ring tubes can be connected together in various ways. For example, they can be connected by a convex-concave fitting structure, or they can be mechanically fastened together as a whole.

[0053] The fixed-length pipes can be assembled and lowered into the trench formed by the underground continuous wall. Subsequently, an adjusting pipe consisting of two semi-ring pipes can be used. As the concrete liquid level 14 rises, the guide pipe 4 is raised. Part of the adjusting pipe can be removed to facilitate the height adjustment of the pump pipe 3. It also facilitates the adjustment of the total length of the guide pipe 4.

[0054] Preferably, the monitoring module includes a laser rangefinder 12 and / or an ultrasonic rangefinder; the laser rangefinder 12 and / or the ultrasonic rangefinder are used to measure the distance between the reference point and the reference surface of the concrete liquid surface 14, the top of the conduit 4, and the vertical section of the pump pipe 3.

[0055] A reflector 13 can be movably fitted onto the lower part of the conduit 4, floating on the concrete liquid surface 14. The reflector 13 is also fixed to the top of the conduit 4 and the top of the vertical section of the pump pipe 3. The reflectors 13 are used to reflect the laser beam from the laser rangefinder 12. Ultrasonic ranging calculates distance based on the time difference of ultrasonic waves propagating in a medium; its core measurement process does not directly depend on the material of the object being measured. The sensor emits ultrasonic pulses, measures the time from emission to reflection from an obstacle, and then calculates the distance based on the speed of sound.

[0056] The monitoring module may also include a depth camera, which acquires images and processes them through an image processing system to obtain parameters such as the depth of the pump pipe 3 inserted into the conduit 4, the concrete liquid level elevation, and the conduit burial depth. The depth camera can obtain three-dimensional information of the entire scene, thus enabling the calibration of the motion control system.

[0057] This invention also provides an adaptive guide pipe burial depth control method for diaphragm wall casting construction using the aforementioned adaptive guide pipe burial depth control system, the method comprising the following steps: Given the known reference elevation, trench depth of the diaphragm wall, design top elevation of the diaphragm wall, total length of guide pipe 4, and length between the reference point of the vertical section of pump pipe 3 and the outlet of pump pipe 3; during concrete pouring, the guide pipe embedment depth control module uses real-time data detected by the monitoring module and known data to calculate in real-time the concrete liquid level elevation, guide pipe embedment depth, depth of pump pipe 3 inserted into guide pipe 4, and distance of concrete liquid level 14 from the design top surface of the diaphragm wall; its output signal controls the operation of the guide pipe lifting device to adjust the guide pipe embedment depth. When the distance between the concrete liquid surface 14 and the top of the diaphragm wall is greater than 100m, the depth of the guide pipe 4 embedded in the concrete surface is within the range of 2.0m to 3.0m; when the distance between the concrete liquid surface 14 and the top of the diaphragm wall is between 50m and 100m, the depth of the guide pipe 4 embedded in the concrete surface is within the range of 2.0m to 2.5m; when the distance between the concrete liquid surface 14 and the top of the diaphragm wall is less than or equal to 50m, the depth of the guide pipe 4 embedded in the concrete surface is within the range of 2.0m to 3.0m. The pump pipe control module receives the following information in real time from the guide pipe burial depth control module: concrete liquid level elevation, depth of pump pipe 3 inserted into guide pipe 4, and distance of concrete liquid level 14 from the designed top surface of the diaphragm wall; when the distance of concrete liquid level 14 from the designed top surface of the diaphragm wall is greater than 30m, it outputs a signal to control the pump pipe lifting device 2 to raise or lower pump pipe 3, so that the height of pump pipe 3 outlet from concrete liquid level 14 is within the range of 0.5m to 1.5m; when the distance of concrete liquid level 14 from the designed top surface of the diaphragm wall is less than or equal to 30m, the height of pump pipe 3 is adjusted using the following two methods: The first method is to increase the external head difference by raising the outlet end of pump pipe 3 above the concrete liquid surface 14 by 1.5m to 1.8m. The second method involves inserting the pump pipe 3 into the conduit 4 below the concrete liquid level 14, with the height below the concrete liquid level 14 ranging from 1.5m to 1.8m. This utilizes some of the pumping kinetic energy to directly transfer it to the lower concrete, further enhancing the diffusivity of the upper concrete section.

[0058] Preferably, the method includes the following steps: Let: the designed height of the diaphragm wall be \(H\), and the distance between the concrete liquid level 14 and the designed top surface of the diaphragm wall during pouring be \(L\). When \(L\geq120m\), according to the distance between the concrete liquid level 14 and the designed top surface of the diaphragm wall, the pouring process is divided into three stages: the initial pouring stage, corresponding to \(\frac{2}{3}H\lt L\leq H\); the middle pouring stage, corresponding to \(\frac{1}{3}H\lt L\leq\frac{2}{3}H\); the later pouring stage, corresponding to \(0\lt L\leq\frac{1}{3}H\). For different stages, adjust the set value range of the catheter burial depth and the set value range of the height of the outlet end of the pump pipe 3 relative to the concrete liquid level 14. The catheter burial depth control module and the pump pipe control module output signals to the control pump pipe lifting device 2 and the catheter lifting device according to the information detected by the monitoring module, so that the distance between the outlet end of the pump pipe 3 and the concrete liquid level 14 and the catheter burial depth are maintained within the corresponding set value ranges. Adjust the set value range of the catheter burial depth and the distance range set value between the outlet end of the pump pipe 3 and the concrete liquid level 14 in each stage according to the following method: Initial pouring stage: The set value range of the catheter burial depth is \(2.0m - 3.0mm\): The set value range of the height of the outlet end of the pump pipe 3 relative to the concrete liquid level 14 is \(1.0m - 1.5m\); Middle pouring stage: The set value range of the catheter burial depth is adjusted to \(2.0m - 2.5m\), and the set value range of the height of the outlet end of the pump pipe 3 relative to the concrete liquid level 14 is adjusted to \(1.0m - 1.5m\); Later pouring stage: Gradually adjust the set value range of the catheter burial depth from \(2.0m - 2.5m\) to \(2.0m - 3.0m\); When the distance between the concrete liquid level 14 and the designed top surface of the diaphragm wall is greater than \(30m\), the set value range of the height of the outlet end of the pump pipe 3 relative to the concrete liquid level 14 is adjusted to \(1.0m - 1.5m\); When the distance between the concrete liquid level 14 and the designed top surface of the diaphragm wall is less than or equal to \(30m\), the following two modes are adopted for the height adjustment of the pump pipe 3: The first mode: Lift the height of the pump pipe 3, and the set value range of the height of the outlet end of the pump pipe 3 relative to the concrete liquid level 14 is \(1.5m - 1.8m\); The second mode: Adjust the set value range of the distance between the outlet end of the pump pipe 3 and the concrete liquid level 14 from a positive value to a negative value, and adjust the set value range of the height of the outlet end of the pump pipe 3 relative to the concrete liquid level 14 to \(-1.5m - -0.5m\). The outlet end of the pump pipe 3 is inserted under the concrete liquid level 14, and the insertion depth under the concrete liquid level 14 is \(0.5m - 1.5m\). That is, the outlet end of the pump pipe 3 is located under the concrete liquid level 14, and the distance between the outlet end of the pump pipe 3 and the upper concrete liquid level 14 is \(0.5m - 1.5m\).

[0059] The following further illustrates the structure, working process and working principle of the present invention with the preferred embodiment of the present invention: An adaptive guide pipe burial depth control system for underground continuous wall pouring construction, the system includes a concrete pump truck, a guide pipe 4, a guide pipe lifting device, a monitoring module and a guide pipe burial depth control module.

[0060] The guide pipe 4 is used to guide the concrete during concrete pouring operations; the guide pipe lifting device is used to lift the guide pipe 4; it is set on the pouring construction platform 6; the guide pipe burial depth control module is used to control the operation of the pump pipe lifting device 2.

[0061] A concrete pump truck is used to transport concrete; it is equipped with a concrete pump, a pump pipe 3, a pump pipe lifting device 2, and a pump pipe control module; the concrete pump is used to continuously transport concrete along the pipeline using pressure; the pump pipe 3 is used to transport concrete from the concrete pump truck to the pouring location, and its output end is inserted into the conduit 4; the pump pipe lifting device 2 is used to lift the pump pipe 3; the pump pipe control module is used to control the operation of the concrete pump and the pump pipe lifting device 2.

[0062] The monitoring module is used to monitor and collect status data in real time related to the depth of the pump pipe 3 inserted into the guide tube 4, the concrete liquid level elevation, and the burial depth of the guide tube.

[0063] The conduit burial depth control module receives monitoring data from the monitoring module and processes it to obtain the following data: the depth of pump pipe 3 inserted into conduit 4, the concrete liquid level elevation, the conduit burial depth, and the distance between the concrete liquid level 14 and the top of the underground continuous wall. It sends the processed data to the pump pipe control module and outputs a signal to control the conduit lifting device to raise and lower conduit 4 based on the processed data, so that the conduit burial depth is maintained within the set range.

[0064] Based on data from the guide pipe burial depth control module, the pump pipe control module outputs signals to control the pump pipe lifting device 2 to lift the pump pipe 3 and to start and stop the concrete pump.

[0065] For general underground seepage barrier construction scenarios where the height of the underground seepage barrier is less than 120m, the present invention provides an adaptive guide pipe burial depth control method for underground continuous wall casting construction, utilizing the aforementioned adaptive guide pipe burial depth control system for continuous wall casting construction. This method includes the following steps: System Configuration and Installation: At the construction site, install the concrete pump truck, guide pipe 4, guide pipe lifting device, monitoring module, and guide pipe burial depth control module. The guide pipe burial depth control module is connected to the monitoring module, which monitors the borehole depth, concrete top surface elevation, and guide pipe 4 position in real time. The pump truck is responsible for delivering concrete to the construction location, and the lifting device of pump pipe 3 and guide pipe 4 is responsible for precisely controlling the burial depth of guide pipe 4.

[0066] Initial debugging and setup: After installation, debug the system to ensure the pump pipe control module, conduit burial depth control module, and monitoring module are working properly, and set the conduit burial depth range. Initially set the burial depth of conduit 4 to 2-3m to ensure uniform concrete rise at the start of pouring and prevent quality problems such as concrete segregation and grout mixing. The conduit burial depth control module automatically adjusts the height of pump pipe 3 through real-time data calculation and feedback.

[0067] Initiation of Pouring: At the start of construction, concrete is delivered to the construction location via a concrete pump truck, and the monitoring module monitors the pouring progress in real time. The pump pipe control module and the guide pipe burial depth control module automatically adjust the raising and lowering of pump pipe 3 based on real-time data to maintain the guide pipe burial depth between 2-3m. When the concrete is poured to a certain depth, the fluidity of the upper section of concrete is enhanced by raising the height of pump pipe 3 or inserting pump pipe 3 below the concrete liquid level 14 in guide pipe 4.

[0068] Conduit 4 Lifting and Adjustment: As concrete pouring progresses, the burial depth of the conduit gradually increases. The system automatically adjusts the burial depth of conduit 4 to ensure it remains within a predetermined range throughout the construction process. After each concrete pumping, the system automatically raises or lowers conduit 4 based on parameters such as pouring depth and concrete level, ensuring the concrete rises evenly from the bottom.

[0069] Upper Section Reinforcement: When pouring to the upper 20-30m, due to the increased external mud concentration and decreased pressure difference, the concrete fluidity is poor. The system will take the following measures to enhance this: Raise the height of pump pipe 3 to increase the external water head difference and improve concrete fluidity. Insert pump pipe 3 into the conduit 4 below the concrete liquid level 14, utilizing some of the pumping kinetic energy to directly transfer to the lower concrete, further enhancing the diffusion of the upper section concrete.

[0070] Real-time monitoring and closed-loop control: Throughout the construction process, the monitoring module continuously monitors the borehole depth, concrete top surface elevation, and the position of guide pipe 4 in real time, enabling the guide pipe depth control module to continuously control the burial depth of guide pipe 4 in a closed loop. When a deviation in guide pipe depth is detected, the guide pipe depth control module automatically adjusts the guide pipe depth to ensure the uniformity and stability of the concrete pouring process. Whenever the measurement result deviates significantly from the target value, the guide pipe depth control module automatically adjusts the guide pipe depth to ensure a uniform rise in the concrete level 14, preventing problems such as segregation, grout mixing, and pipe blockage.

[0071] Concrete pouring completion and quality inspection: After pouring is completed, concrete pumping is stopped, and the pump pipe control module and conduit burial depth control module store data and provide a construction report. The project supervision department inspects the wall quality based on the data recorded by the system to ensure that the anti-seepage wall structure is uniform and free of cracks, voids, or other quality defects.

[0072] The water pressure test verifies whether the wall's waterproofing effect meets the design requirements.

[0073] Construction data feedback and optimization: After construction is completed, the system records all data from the construction process, performs statistical analysis, and evaluates the system's efficiency and quality. The feedback data can be used to optimize subsequent construction processes and system settings, further improving construction efficiency and quality control capabilities.

[0074] The adaptive guide pipe burial depth control method of the present invention for underground continuous wall casting construction can be used for the construction of ultra-deep underground anti-seepage walls with a depth greater than 120m.

[0075] For ultra-deep underground cutoff walls with a depth greater than 120m, strict measures must be taken to prevent groundwater leakage and ensure the structural integrity and seepage prevention effect of the cutoff wall. The continuous wall casting method is adopted, and the flowability and uniformity of the concrete must be strictly controlled during the casting process to meet the seepage prevention requirements of the cutoff wall.

[0076] When the pouring depth exceeds 120m, the concrete's fluidity is poor, making it prone to uneven pouring, segregation, and mixing. Manual operation is difficult: The greater the depth, the more difficult the manual operation becomes, and problems such as excessively deep pipe embedding and difficulty in pipe removal are likely to occur, increasing construction difficulty and safety risks. Extremely high construction quality requirements: As this is a seepage barrier, the pouring quality demands strict adherence to seepage prevention standards; any quality defects may lead to wall leakage, thus affecting project safety.

[0077] To address the aforementioned problems, this invention employs the following methods and steps for constructing ultra-deep underground anti-seepage walls with a depth greater than 150m: 1. System installation and debugging: After the system is installed, on-site debugging is conducted to ensure that the system can accurately control the burial depth of conduit 4 based on real-time data.

[0078] 2. Specific methods and steps of the pouring process: Initial pouring (0-50m): At the start of pouring, the duct depth is set between 2-3m, and the monitoring module monitors the concrete level 14 in real time to ensure that the height of the pump pipe 3 matches the duct depth. When the pouring reaches a depth of 50m, the duct depth control module automatically adjusts the duct depth according to the pouring progress to avoid poor concrete fluidity or uneven lifting during the pouring process.

[0079] Intermediate pouring (50-100m): When the concrete reaches a depth of 100m, the pump pipe control module and the guide pipe embedment depth control module automatically adjust the height of pump pipe 3 according to the hole depth and the top elevation of the concrete, gradually adjusting the guide pipe embedment depth to between 2m and 2.5m. At this point, the concrete has good fluidity and diffusion during the pouring process. The guide pipe embedment depth control module outputs a signal to control the guide pipe lifting device to automatically lift the guide pipe 4, ensuring that the concrete rises evenly from the bottom to the top and avoiding segregation and slurry mixing.

[0080] Deep section pouring (100-150m and above): When pouring to the deeper sections (100m to 158m), the concrete fluidity may decrease due to increased external mud concentration and decreased pressure difference. At this point, the external head difference is used to enhance concrete fluidity by raising the height of pump pipe 3 or inserting it below the concrete liquid level 14 inside the guide pipe 4. During this stage, the guide pipe depth control module precisely adjusts the guide pipe depth to 2-2.5m to ensure smooth pouring of the deeper concrete sections and avoid quality problems caused by insufficient pressure difference or poor fluidity.

[0081] 4. Real-time monitoring and adjustment: During construction, the system continuously monitors the borehole depth, concrete top surface elevation, and the position of guide pipe 4 in real time, maintaining closed-loop control. Whenever the burial depth deviates from the set value, the guide pipe burial depth control module outputs a signal to control the guide pipe lifting device to raise or lower guide pipe 4, automatically adjusting the height of guide pipe 4 to ensure that the burial depth remains stable within the predetermined range. Through precise control, each pumped concrete is evenly distributed, ensuring that sections with a depth exceeding 100m can be poured smoothly.

[0082] 5. Complete the pouring: After several hours of continuous pouring, the entire diaphragm wall was completed. During the pouring process, the concrete level rose evenly without any segregation, mixing, or pipe blockage. Precise control of the tremie pipe's embedment depth successfully avoided the uneven concrete rise that occurs in traditional methods, ensuring construction quality.

[0083] 6. Post-construction inspection and verification: After construction was completed, the project supervision department conducted a comprehensive inspection of the structural quality of the anti-seepage wall, confirming that the wall structure was uniform and compact, without cracks, voids, or other quality defects. Following a water pressure test, the wall's anti-seepage effect was found to be good, meeting the design requirements.

[0084] Results: Improved construction quality: By precisely controlling the burial depth of the conduit, problems such as uneven concrete pouring and segregation in traditional construction methods were successfully avoided, ensuring the quality of the wall, especially in ultra-deep construction environments, ensuring the seepage prevention effect.

[0085] Improved construction efficiency: The system automatically controls the lifting and lowering of the pump pipe 3, reducing the frequency of manual operation and construction delays caused by human error, thus significantly improving construction efficiency. Enhanced safety: Automated control reduces human intervention, minimizes safety risks, and enhances the safety of the construction process.

[0086] This implementation case demonstrates how the adaptive tremie pipe burial depth control system of this invention can be applied during the pouring of an ultra-deep underground continuous wall with a design depth of 150m. By precisely controlling the tremie pipe burial depth and concrete fluidity, problems such as uneven pouring and segregation in deep-buried construction are successfully solved, improving construction efficiency and quality, and ensuring the structural integrity and seepage prevention effect of the cutoff wall. This technical solution has wide applicability, especially suitable for projects with large depths and high quality requirements.

[0087] The aforementioned concrete pump truck, guide pipe 4, guide pipe lifting device, monitoring module, concrete pump, pump pipe 3, pump pipe lifting device 2, pump pipe control module, arc-shaped guard plate 9, baffle 10, magnetic induction counter, clamping arm 7, clamp, lifting device 5, fixed length pipe, adjusting pipe, laser rangefinder 12, ultrasonic rangefinder, and other devices can all adopt applicable devices and structures in the existing technology, or adopt devices and structures in the existing technology and construct them using conventional technical means.

[0088] The embodiments described above are only used to illustrate the technical ideas and features of the present invention. Their purpose is to enable those skilled in the art to understand the content of the present invention and implement it accordingly. The patent scope of the present invention should not be limited by these embodiments. That is, any equivalent changes or modifications made in accordance with the spirit disclosed in the present invention still fall within the patent scope of the present invention.

Claims

1. An adaptive guide pipe burial depth control system for diaphragm wall casting construction, characterized in that, The system includes a concrete pump truck, a guide pipe, a guide pipe lifting device, a monitoring module, and a guide pipe burial depth control module; The guide pipe is used to guide concrete during concrete pouring operations; the guide pipe lifting device is used to raise and lower the guide pipe. It is set on the pouring construction platform; the guide pipe burial depth control module is used to control the operation of the pump pipe lifting device; A concrete pump truck is used to transport concrete; it is equipped with a concrete pump, a pump pipe, a pump pipe lifting device, and a pump pipe control module; the concrete pump is used to continuously transport concrete along the pipeline using pressure; the pump pipe is used to transport concrete from the concrete pump truck to the pouring location, and its output end is inserted into the conduit; the pump pipe lifting device is used to raise and lower the pump pipe; the pump pipe control module is used to control the operation of the concrete pump and the pump pipe lifting device. The monitoring module is used to monitor and collect status data in real time that are associated with parameters such as the depth of the pump pipe inserted into the guide tube, the concrete liquid level, and the burial depth of the guide tube. The conduit burial depth control module receives monitoring data from the monitoring module, processes it to obtain the following data: the depth of the pump pipe inserted into the conduit, the concrete liquid level elevation, the conduit burial depth, and the distance between the concrete liquid level and the top of the underground continuous wall. It sends the processed data to the pump pipe control module and outputs a signal to control the conduit lifting device to raise and lower the conduit based on the processed data, so that the conduit burial depth is maintained within the set range. Based on data from the guide pipe burial depth control module, the pump pipe control module outputs signals to control the pump pipe lifting device to raise and lower the pump pipe and start and stop the concrete pump.

2. The adaptive guide pipe burial depth control system for diaphragm wall casting construction according to claim 1, characterized in that, The system also includes a pump pipe auxiliary support device for keeping the pump pipe upright during pouring. The pump pipe auxiliary support device includes several sections of arc-shaped protective plates that are hinged in sequence. The arc-shaped inner surface of the arc-shaped protective plate matches the outer surface of the pump pipe. The arc-shaped protective plate covers the outer surface of the pump pipe. Each hinge is provided with a baffle to restrict the arc-shaped protective plate from flipping outward.

3. The adaptive guide pipe burial depth control system for diaphragm wall casting construction according to claim 2, characterized in that, Each baffle is equipped with a magnet, and the monitoring module includes a magnetic induction counter set at the top of the conduit. The depth of the pump tube inserted into the conduit is detected by the count value of the magnetic induction counter.

4. The adaptive guide pipe burial depth control system for diaphragm wall casting construction according to claim 1, characterized in that, The catheter lifting device includes at least one lifter and multiple openable clamping arms. Each clamping arm includes a pair of clamps, which clamp the catheter when closed. The multiple clamping arms are divided into two groups, referred to as group A clamping arms and group B clamping arms, respectively. The catheter burial depth control module outputs signals to control the lifting and lowering of the lifting unit and the opening and closing of the clamps of each set of clamping arms; it links the clamping arm A with the lifting end of a certain lifting unit; when the catheter needs to be lifted or lowered, the clamps of the clamping arm A close and move up and down with the lifting end of the lifting unit, while the clamps of the clamping arm B open and remain stationary; when the lifting end of the lifting unit moves into position or its upper and lower travel limit switches are activated, the clamps of the clamping arm B close, and then the clamps of the clamping arm A are released, causing the lifting end of the lifting unit to move in the opposite direction and reset; the inner side of the clamps is equipped with rubber pads, and the outer surface of the catheter is equipped with anti-slip textures.

5. The adaptive guide pipe burial depth control system for diaphragm wall casting construction according to claim 1, characterized in that, The catheter lifting device includes two sets of lifters, namely set A lifter and set B lifter. Set A clamping arm is installed on the lifting end of set A lifter, and set B clamping arm is installed on the lifting end of set B lifter. When the catheter needs to be raised or lowered, the A-group lifter and the B-group lifter alternately raise, lower, and reset.

6. The adaptive guide pipe burial depth control system for diaphragm wall casting construction according to claim 1, characterized in that, The catheter includes multiple fixed-length tubes and multiple adjustable tubes of different lengths; the upper end of the fixed-length tube or the adjustable tube is provided with a flared port; the lower end of the fixed-length tube or the adjustable tube is provided with an annular protrusion 10-15cm away from the port, the diameter of the annular protrusion being equal to the outer diameter of the upper end port; the lower end port of the fixed-length tube or the adjustable tube is inserted into the upper end port of the fixed-length tube or the adjustable tube, and an annular clamp is provided at the insertion point, the inner side of the annular clamp being provided with a U-shaped groove covering the annular protrusion and the upper end interface.

7. The adaptive guide pipe burial depth control system for diaphragm wall casting construction according to claim 6, characterized in that, The regulating pipe is composed of two detachable semi-ring pipes.

8. The adaptive guide pipe burial depth control system for diaphragm wall casting construction according to claim 1, characterized in that, The monitoring module includes a laser rangefinder and / or an ultrasonic rangefinder; the laser rangefinder and / or ultrasonic rangefinder are used to measure the distance between the concrete liquid surface, the top of the duct, and the reference point and reference plane of the vertical section of the pump pipe.

9. A method for adaptive duct burial depth control in diaphragm wall construction using the adaptive duct burial depth control system of claim 1, characterized in that, The method includes the following steps: Given the known reference elevation, diaphragm wall trench depth, diaphragm wall design top elevation, duct length, and the length from the reference point of the vertical section of the pump pipe to the pump pipe outlet; during concrete pouring, the duct depth control module uses real-time data detected by the monitoring module and known data to calculate in real-time the concrete surface elevation, duct depth, pump pipe insertion depth into the duct, and distance between the concrete surface and the design top surface of the diaphragm wall; its output signal controls the duct lifting device to adjust the duct depth. When the distance between the concrete surface and the top of the diaphragm wall is greater than 100m, the duct depth embedded in the concrete surface is within the range of 2.0m to 3.0m; when the distance is between 50m and 100m, the duct depth is within the range of 2.0m to 2.5m; when the distance is less than or equal to 50m, the duct depth is within the range of 2.0m to 3.0m. The pump pipe control module receives the following information in real time from the guide pipe burial depth control module: concrete liquid level elevation, pump pipe insertion depth into the guide pipe, and distance between the concrete liquid level and the designed top surface of the diaphragm wall. When the distance between the concrete liquid level and the designed top surface of the diaphragm wall is greater than 30m, it outputs a signal to control the pump pipe lifting device to raise or lower the pump pipe, so that the height of the pump pipe outlet from the concrete liquid level is within the range of 0.5m to 1.5m. When the distance between the concrete liquid level and the designed top surface of the diaphragm wall is less than or equal to 30m, the pump pipe height is adjusted using the following two methods: The first method is to increase the external head difference by raising the pump pipe outlet end above the concrete liquid surface by 1.5m to 1.8m. The second method involves inserting the pump pipe below the concrete surface in the conduit, with the height below the concrete surface ranging from 1.5m to 1.8m. This utilizes some of the pumping kinetic energy to directly transfer it to the lower concrete, further enhancing the diffusivity of the upper concrete section.

10. The adaptive guide pipe embedment depth control method for diaphragm wall casting construction according to claim 8, characterized in that, This method includes the following steps: Let the design height of the diaphragm wall be H, and the distance between the concrete surface and the design top surface of the diaphragm wall during pouring be L. When L ≥ 120m, the pouring process is divided into three stages based on the distance between the concrete surface and the design top surface of the diaphragm wall: the initial pouring stage, corresponding to 2 / 3H. <L≤H; In the middle pouring stage, it corresponds to 1 / 3H < L ≤ 2 / 3H; in the later pouring stage, it corresponds to 0 < L ≤ 1 / 3H. For different stages, adjust the set values of the catheter burial depth range and the height range of the outlet end of the pump pipe relative to the concrete liquid level. The catheter burial depth control module and the pump pipe control module output signals to the control pump pipe lifting device and the catheter lifting device according to the information detected by the monitoring module, so that the distance between the outlet end of the pump pipe and the concrete liquid level and the catheter burial depth are maintained within the corresponding set value ranges. Adjust the set values of the catheter burial depth range and the distance range between the outlet end of the pump pipe and the concrete liquid level in each stage according to the following method: Initial pouring stage: The set value range of the catheter burial depth is 2.0m to 3.0m: The set value range of the height of the outlet end of the pump pipe relative to the concrete liquid level is 1.0m to 1.5m; Middle pouring stage: The set value range of the catheter burial depth is adjusted to 2.0m to 2.5m, and the set value range of the height of the outlet end of the pump pipe relative to the concrete liquid level is adjusted to 1.0m to 1.5m; Later pouring stage: Gradually adjust the set value range of the catheter burial depth from 2.0m to 2.5m to 2.0m to 3.0m; When the distance between the concrete liquid level and the designed top surface of the diaphragm wall is greater than 30m, the set value range of the height of the outlet end of the pump pipe relative to the concrete liquid level is adjusted to 1.0m to 1.5m; when the distance between the concrete liquid level and the designed top surface of the diaphragm wall is less than or equal to 30m, the following two modes are adopted for adjusting the height of the pump pipe: The first mode: Lift the height of the pump pipe, and the set value range of the height of the outlet end of the pump pipe relative to the concrete liquid level is 1.5m to 1.8m; The second mode: Adjust the set value range of the distance between the outlet end of the pump pipe and the concrete liquid level from a positive value to a negative value, and adjust the set value range of the height of the outlet end of the pump pipe relative to the concrete liquid level to -1.5m to -0.5m.

Images