Foundation pit excavation supporting equipment and method

Abstract

The invention relates to the technical field of constructional engineering, in particular to foundation pit excavation supporting equipment and method.The foundation pit excavation supporting equipment comprises a supporting assembly, a soil body reinforcing assembly and an intelligent monitoring system.The supporting assembly comprises a foundation base, a continuous parapet wall, a frame, a plurality of supporting rods, two transverse rods, a plurality of round rods, a plurality of connecting rods and a plurality of first flange connecting pieces; the continuous protective wall is arranged on the inner wall of a foundation pit, the frame is detachably connected with the foundation base, the multiple supporting rods are arranged on the frame, the transverse rods are fixedly connected with the corresponding supporting rods, the multiple connecting rods are arranged on the continuous wall, and one ends of the multiple round rods are fixedly connected with the corresponding transverse rods respectively. The other ends of the round rods are connected with the corresponding supporting rods through the corresponding first flange connecting pieces, and in this way, the technical problems that in the prior art, deformation, displacement and even collapse are prone to occurring in a supporting mode under the complex geological conditions such as a soft soil layer and a sand layer or under the large foundation pit depth are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of construction engineering, and in particular to foundation pit excavation support equipment and method. Background Art

[0002] In the field of construction engineering, foundation pit engineering is a common and critical construction content. To put it simply, the foundation pit is the space below the ground excavated for the construction of the foundation and basement of buildings (including structures). It provides the necessary construction site for the underground part of the building and is the basic premise for ensuring the stability of the overall structure and normal use of the building. During the excavation of the foundation pit, the original stress balance state of the soil is broken, the stress inside the soil is redistributed, and the soil on the side wall of the foundation pit is prone to move toward the inside of the foundation pit under the action of its own gravity and external loads. If effective support measures are not taken, the side walls of the foundation pit may collapse, landslide and other safety accidents may occur, which will not only affect the construction progress and quality of the foundation pit project, but may also pose a serious threat to the surrounding environment and the safety of life and property of people. Therefore, support is required during the excavation of the foundation pit.

[0003] The existing support methods mostly use steel sheet pile support, cast-in-place pile support, etc. However, when faced with complex geological conditions, such as soft soil layers, sand layers, etc., or large foundation pit depths, deformation, displacement, and even collapse are prone to occur. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a foundation pit excavation support equipment and method, aiming to solve the technical problem that the support method in the existing technology is prone to deformation, displacement, and even collapse when facing complex geological conditions, such as soft soil layers, sand layers, etc., or larger foundation pit depths.

[0005] To achieve the above-mentioned objectives, the present invention adopts a foundation pit excavation support equipment, including a support assembly, a soil reinforcement assembly and an intelligent monitoring system, the support assembly including a foundation base, a continuous retaining wall, a frame, multiple support rods, two cross rods, multiple round rods, multiple connecting rods and multiple first flange connectors, the foundation base is preset at the bottom of the foundation pit by pouring concrete, the continuous retaining wall is arranged on the inner wall of the foundation pit, the frame is detachably connected to the foundation base, multiple support rods are arranged on the frame, the cross rods are fixedly connected to the corresponding support rods, multiple connecting rods are arranged on the continuous wall, one end of multiple round rods are respectively fixedly connected to the corresponding cross rods, and the other end of multiple round rods are connected to the corresponding support rods through the corresponding first flange connectors, the soil reinforcement assembly is arranged on the continuous retaining wall, and the intelligent monitoring system is used to monitor the stress and deformation of the support structure.

[0006] Among them, the foundation pit excavation support equipment also includes two sets of adjustment components, and the adjustment components include two screws and two polygonal blocks. The screws are rotatably connected to the frame, and the screws are threadedly matched with the corresponding support rods. The polygonal blocks are fixedly connected to one end of the screw away from the support rod.

[0007] Wherein, the adjustment component further includes two pulleys and a belt, the two pulleys are respectively fixedly connected to the corresponding screw rods, and the belt is arranged between the two pulleys.

[0008] The frame includes a frame body, multiple vertical rods and a second flange connector, one end of each of the vertical rods is fixedly connected to the frame body, and the other end of each of the vertical rods is fixedly connected to the base through the corresponding second flange connector.

[0009] The soil reinforcement assembly includes a plurality of grouting pipes, one end of each of the grouting pipes passes through the continuous retaining wall and is inserted into the soil.

[0010] The grouting pipe penetrates the continuous retaining wall at an inclination angle of 30-60 degrees, and the end is connected to a high-pressure grouting pump.

[0011] The length of the grouting pipe is 1.2-1.5 times the design depth of the foundation pit, and the end extends to the stable layer of the soil to be reinforced. The specific formula is:

[0012] L=H×(1.2+0.1k)

[0013] Among them, L is the length of the grouting pipe, H is the depth of the foundation pit, and k is the soil looseness coefficient (the value range is 0 to 3, determined according to the geological exploration report).

[0014] The intelligent monitoring system includes a sensor module, a data acquisition module, an edge computing unit, a central processing unit, a push module and a management terminal;

[0015] The data acquisition module is connected to the sensor module, the edge computing unit is connected to the data acquisition module, the central processing unit is connected to the edge computing unit, and the push module is connected to the central processing unit and the processing terminal; the sensor module includes a stress sensor, a MEMS displacement sensor, an earth pressure sensor and a three-dimensional laser scanner, and the stress sensor, the MEMS displacement sensor, the earth pressure sensor and the three-dimensional laser scanner are all connected to the data acquisition module;

[0016] The stress sensor is embedded in the support rod node to monitor the axial pressure; the MEMS displacement sensor is arranged on the surface of the continuous retaining wall with an accuracy of ±0.05mm; the soil pressure sensor is buried around the grouting pipe to monitor the soil density; the 3D laser scanner periodically generates a point cloud model of the foundation pit;

[0017] The data acquisition module acquires data collected by the stress sensor, the MEMS displacement sensor, the soil pressure sensor and the three-dimensional laser scanner in real time, and transmits the data to the edge processing unit;

[0018] The edge processing unit integrates an FPGA chip, runs a Kalman filter algorithm to eliminate data noise, and then transmits it to the central processor;

[0019] The central processing unit is equipped with an LSTM neural network to predict structural deformation trends and uses a random forest algorithm to identify collapse risks. When a collapse risk is identified, the push module pushes the alarm information to the management terminal.

[0020] The present invention also provides a foundation pit excavation support method, which is applied to the foundation pit excavation support equipment as described above.

[0021] The steps include:

[0022] Cast the foundation base at the bottom of the foundation pit to ensure the stability of the base, and install the continuous retaining wall on the inner wall of the foundation pit to provide preliminary side wall support;

[0023] Then, the frame is detachably connected to a preset base to ensure the stability of the frame, and then the position of the round rod is adjusted by the adjustment assembly;

[0024] Then, the continuous retaining wall is indirectly connected to the frame through the first flange connector, and the grouting pipe is laid at an inclination angle of 30-60 degrees, and the grouting pipe is connected to a high-pressure grouting pump;

[0025] Installing the stress sensor, the MEMS displacement sensor, and the soil pressure sensor at designated locations;

[0026] The data acquisition module synchronously acquires stress, displacement and earth pressure data at a frequency of 100 Hz; and runs a Kalman filter algorithm through the edge computing unit to eliminate noise and output smooth data to the central processing unit;

[0027] The central processor loads the LSTM neural network model to predict the structural deformation within the next hour based on historical data; the random forest algorithm analyzes the three-dimensional point cloud data to identify cracks, cavities and local curvature abnormal areas;

[0028] When the predicted deformation exceeds the threshold or a high-risk area is identified, the central processor pushes the alarm information to the management terminal through the push module

[0029] The beneficial effects of the present invention are:

[0030] The foundation base is poured at the bottom of the foundation pit to ensure that the base is stable, and the continuous retaining wall is installed on the inner wall of the foundation pit to provide preliminary side wall support; the frame is then detachably connected to the preset foundation base to ensure that the frame is stable, and then the position of the round rod is adjusted by the adjustment component; the continuous retaining wall is then indirectly connected to the frame through the first flange connection, and the grouting pipe is arranged at an inclination angle of 30-60°, the grouting pipe is connected to a high-pressure grouting pump, and grouting is performed in the grouting pipe. At the same time, during the excavation process, the stress and deformation of the support structure are monitored by the intelligent monitoring system; it is convenient to know the data in time to adjust the excavation progress and support measures in time to ensure construction safety. In this way, the technical problem that the support method in the existing technology is prone to deformation, displacement, and even collapse when facing complex geological conditions, such as soft soil layers, sand layers, etc., or large foundation pit depths is solved.

[0031] Other advantages, objects, and features of the present invention will be described in part in the following description and, in part, will be apparent to those skilled in the art upon examination of the following description or may be learned from practice of the present invention. The objects and other advantages of the present invention may be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be described in detail below with reference to the accompanying drawings, in which:

[0033] Figure 1 It is a structural schematic diagram of the foundation pit excavation support equipment of the present invention.

[0034] Figure 2 It is a top view of the foundation pit excavation support equipment of the present invention.

[0035] Figure 3 The present invention Figure 1 A magnified view of the local structure at point A.

[0036] Figure 4 It is a principle block diagram of the intelligent monitoring system of the present invention.

[0037] Figure 5 It is a flow chart of the foundation pit excavation and supporting method of the present invention.

[0038] 101-foundation base, 102-continuous retaining wall, 103-support rod, 104-cross rod, 105-round rod, 106-connecting rod, 107-first flange connector, 108-screw, 109-polygonal block, 110-pulley, 111-belt, 112-frame, 113-vertical rod, 114-second flange connector, 115-grouting pipe, 116-sensor module, 117-data acquisition module, 118-edge computing unit, 119-central processing unit, 120-push module, 121-management terminal, 122-stress sensor, 123-MEMS displacement sensor, 124-soil pressure sensor, 125-3D laser scanner. DETAILED DESCRIPTION

[0039] The present invention is further described below with reference to specific embodiments. The accompanying drawings are for illustrative purposes only and are schematic, not actual, representations. They should not be construed as limiting this patent. To better illustrate the embodiments of the present invention, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted from the drawings.

[0040] See also Figures 1 to 4 ,in Figure 1 It is a structural schematic diagram of the foundation pit excavation support equipment of the present invention. Figure 2 It is a top view of the foundation pit excavation support equipment of the present invention. Figure 3 The present invention Figure 1 A magnified view of the local structure at point A. Figure 4 It is a principle block diagram of the intelligent monitoring system of the present invention.

[0041] The present invention provides a foundation pit excavation support device, including a support assembly, a soil reinforcement assembly, an intelligent monitoring system and two sets of adjustment assemblies, wherein the support assembly includes a foundation base 101, a continuous retaining wall 102, a frame, multiple support rods 103, two cross bars 104, multiple round rods 105, multiple connecting rods 106 and multiple first flange connectors 107, the adjustment assembly includes two screw rods 108, two polygonal blocks 109, two pulleys 110 and a belt 111, the frame includes a frame body 112, multiple vertical rods 113 and a second flange connector 114, the soil reinforcement assembly includes a plurality of ... The intelligent monitoring system includes a plurality of grouting pipes 115, and the intelligent monitoring system includes a sensor module 116, a data acquisition module 117, an edge computing unit 118, a central processing unit 119, a push module 120 and a management terminal 121. The sensor module 116 includes a stress sensor 122, a MEMS displacement sensor 123, an earth pressure sensor 124 and a three-dimensional laser scanner 125. The above-mentioned solution solves the technical problem that the support method in the existing technology is prone to deformation, displacement, and even collapse when facing complex geological conditions, such as soft soil layers, sand layers, etc., or a large foundation pit depth.

[0042] According to this specific embodiment, the foundation base 101 is preset at the bottom of the foundation pit by pouring concrete, the continuous retaining wall 102 is arranged on the inner wall of the foundation pit, the frame is detachably connected to the foundation base 101, the plurality of support rods 103 are arranged on the frame, the cross rods 104 are fixedly connected to the corresponding support rods 103, the plurality of connecting rods 106 are arranged on the continuous wall, one end of the plurality of round rods 105 are respectively fixedly connected to the corresponding cross rods 104, and the other ends of the plurality of round rods 105 are connected to the corresponding support rods 103 through the corresponding first flange connectors 107, the soil reinforcement assembly is arranged on the continuous retaining wall 102, the intelligent monitoring system is used to monitor the stress and deformation of the support structure, the foundation base 101 is poured at the bottom of the foundation pit to ensure that the base is stable, and the continuous retaining wall 102 is installed on the inner wall of the foundation pit. 02, to provide preliminary side wall support; then the frame is detachably connected to the preset foundation base 101 to ensure the stability of the frame, and then the position of the round rod 105 is adjusted by the adjustment component; then the continuous retaining wall 102 is indirectly connected to the frame through the first flange connection 107, and the grouting pipe 115 is arranged at an inclination angle of 30-60°, and the grouting pipe 115 is connected to a high-pressure grouting pump, and grouting is performed in the grouting pipe 115. At the same time, during the excavation process, the stress and deformation of the support structure are monitored by the intelligent monitoring system; it is convenient to know the data in time to adjust the excavation progress and support measures in time to ensure construction safety. In this way, the technical problem that the support method in the existing technology is prone to deformation, displacement, and even collapse when facing complex geological conditions, such as soft soil layers, sand layers, etc., or large foundation pit depths is solved.

[0043] In which, the screw 108 is rotatably connected to the frame, and the screw 108 is threadedly engaged with the corresponding support rod 103, and the polygonal block 109 is fixedly connected to the end of the screw 108 away from the support rod 103. When in use, by rotating the force block, the polygonal block 109 drives the screw 108 to rotate, and the screw 108 can slide with the corresponding support rod 103, thereby driving the cross bar 104 and the connecting rod 106 to move close to the continuous retaining wall 102.

[0044] Secondly, the two pulleys 110 are fixedly connected to the corresponding screw rods 108 respectively, and the belt 111 is arranged between the two pulleys 110. When in use, by setting the pulleys 110 and the belt 111, only one screw rod 108 needs to be rotated to drive the other corresponding screw rod 108 to rotate through the pulleys 110 and the belt 111, so that the corresponding two screw rods 108 rotate synchronously.

[0045] At the same time, one end of the multiple vertical rods 113 is fixedly connected to the frame 112, and the other end of the multiple vertical rods 113 is fixedly connected to the basic base 101 through the corresponding second flange connector 114, and the vertical rods 113 and the second flange connector 114 are used to connect the frame 112 to the basic base 101.

[0046] In addition, one end of the plurality of grouting pipes 115 passes through the continuous retaining wall 102 and is inserted into the soil;

[0047] The grouting pipe 115 penetrates the continuous retaining wall 102 at an inclination angle of 30-60 degrees, and the end is connected to a high-pressure grouting pump;

[0048] Cement slurry or other reinforcement materials are injected into the grouting pipe 115 by a high-pressure grouting pump to enhance the integrity and stability of the soil.

[0049] The length of the grouting pipe 115 is 1.2-1.5 times the design depth of the foundation pit, and the end extends to the stable layer of the soil to be reinforced. The specific formula is:

[0050] L=H×(1.2+0.1k)

[0051] Among them, L is the length of the grouting pipe 115, H is the depth of the foundation pit, and k is the soil looseness coefficient (the value range is 0 to 3, determined according to the geological exploration report).

[0052] The data acquisition module 117 is connected to the sensor module 116, the edge computing unit 118 is connected to the data acquisition module 117, the central processing unit 119 is connected to the edge computing unit 118, and the push module 120 is connected to the central processing unit 119 and the processing terminal; the sensor module 116 includes a stress sensor 122, a MEMS displacement sensor 123, an earth pressure sensor 124, and a three-dimensional laser scanner 125, and the stress sensor 122, the MEMS displacement sensor 123, the earth pressure sensor 124, and the three-dimensional laser scanner 125 are all connected to the data acquisition module 117;

[0053] The stress sensor 122 is embedded in the node of the support rod 103 to monitor the axial pressure; the MEMS displacement sensor 123 is arranged on the surface of the continuous retaining wall 102 with an accuracy of ±0.05mm; the soil pressure sensor 124 is buried around the grouting pipe 115 to monitor the soil density; the 3D laser scanner 125 periodically generates a point cloud model of the foundation pit;

[0054] The data acquisition module 117 acquires data collected by the stress sensor 122 , the MEMS displacement sensor 123 , the earth pressure sensor 124 , and the 3D laser scanner 125 in real time, and transmits the data to the edge processing unit;

[0055] The edge processing unit integrates an FPGA chip, runs a Kalman filter algorithm to eliminate data noise, and then transmits the data to the central processor 119;

[0056] The central processor 119 is equipped with an LSTM neural network to predict structural deformation trends and uses a random forest algorithm to identify collapse risks. When a collapse risk is identified, the push module 120 pushes an alarm message to the management terminal 121.

[0057] Using a foundation pit excavation support device of the present invention, the foundation base 101 is cast at the bottom of the foundation pit to ensure the stability of the base, and the continuous retaining wall 102 is installed on the inner wall of the foundation pit to provide preliminary side wall support; the frame is then detachably connected to the preset foundation base 101 to ensure the stability of the frame, and the position of the round rod 105 is then adjusted by the adjustment assembly; the continuous retaining wall 102 is then indirectly connected to the frame through the first flange connection 107, and the grouting pipe 115 is arranged at an inclination angle of 30-60 degrees. The grouting pipe 115 is connected to a high-pressure grouting pump, and grouting is performed in the grouting pipe 115. At the same time, during the excavation process, the stress and deformation of the support structure are monitored by the intelligent monitoring system; the data is timely known to adjust the excavation progress and support measures in a timely manner to ensure construction safety. In this way, the technical problem that the support method in the prior art is prone to deformation, displacement, or even collapse when facing complex geological conditions, such as soft soil layers, sand layers, etc., or when the foundation pit depth is large, is solved.

[0058] See also Figure 5 , Figure 5 It is a flow chart of the foundation pit excavation and supporting method of the present invention.

[0059] The present invention also provides a foundation pit excavation support method, which is applied to the foundation pit excavation support equipment as described above.

[0060] The steps include:

[0061] Cast the foundation base 101 at the bottom of the foundation pit to ensure the stability of the base, and install the continuous retaining wall 102 on the inner wall of the foundation pit to provide preliminary side wall support;

[0062] Then, the frame is detachably connected to the preset base 101 to ensure the stability of the frame, and then the position of the round rod 105 is adjusted by the adjustment assembly;

[0063] Then, the continuous retaining wall 102 is indirectly connected to the frame through the first flange connector 107, and the grouting pipe 115 is laid at an angle of 30-60 degrees, and the grouting pipe 115 is connected to a high-pressure grouting pump;

[0064] Installing the stress sensor 122 , the MEMS displacement sensor 123 , and the soil pressure sensor 124 at designated locations;

[0065] The data acquisition module 117 synchronously acquires stress, displacement and earth pressure data at a frequency of 100 Hz; and runs the Kalman filter algorithm through the edge computing unit 118 to eliminate noise and output smooth data to the central processing unit 119;

[0066] The central processor 119 loads the LSTM neural network model to predict the structural deformation within the next hour based on historical data; the random forest algorithm analyzes the three-dimensional point cloud data to identify cracks, cavities and local curvature abnormal areas;

[0067] When the predicted deformation exceeds a threshold or a high-risk area is identified, the central processor 119 pushes the alarm information to the management terminal 121 through the push module 120 .

[0068] The central processing unit 119 loads an LSTM neural network model. The LSTM neural network model employed to predict structural deformation within the next hour based on historical data employs a multi-layered LSTM architecture, with each LSTM unit effectively capturing the temporal dependencies within the historical data. During training, the model fully exploits the temporal characteristics inherent in the historical data. By iteratively learning from a large amount of historical data, it continuously optimizes its parameters, thereby establishing a complex mapping relationship between historical data and future structural deformation, ultimately achieving an accurate prediction of structural deformation within the next hour.

[0069] The random forest algorithm used to analyze three-dimensional point cloud data and identify cracks, cavities, and local curvature anomaly areas adopts a feature extraction and multi-decision tree integrated modeling strategy based on the fusion of neighborhood geometry and distribution features. The algorithm first extracts key local features for each point in the point cloud by integrating its neighborhood geometry information (such as curvature, normal vector) and distribution characteristics (such as point density, distribution uniformity); then constructs a decision tree forest model, integrates the prediction results of multiple decision trees, gives full play to the advantages of each tree, improves the model's generalization ability and recognition accuracy, and accurately and efficiently locates abnormal areas. In addition to the stress sensor 122, the MEMS displacement sensor 123, and the earth pressure sensor 124, groundwater level sensors and temperature sensors are also added to monitor groundwater level and temperature changes around the foundation pit, and these data are incorporated into the analysis model of the central processor 119 to improve the accuracy and comprehensiveness of collapse risk identification.

[0070] At the same time, monitoring data and support effectiveness from multiple similar foundation pit projects were collected and analyzed, and a support scheme optimization model was established using big data technology. In subsequent foundation pit projects, support parameters and reinforcement measures were automatically adjusted based on real-time monitoring data and this optimization model, achieving continuous optimization of the support scheme.

[0071] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not limiting. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solutions, which should all be included in the scope of the claims of the present invention.

Claims

1. A foundation pit excavation support equipment, characterized in that: It includes a support component, a soil reinforcement component and an intelligent monitoring system. The support component includes a foundation base, a continuous retaining wall, a frame, multiple support rods, two cross rods, multiple round rods, multiple connecting rods and multiple first flange connectors. The foundation base is preset at the bottom of the foundation pit by pouring concrete. The continuous retaining wall is arranged on the inner wall of the foundation pit. The frame is detachably connected to the foundation base. Multiple support rods are arranged on the frame. The cross rods are fixedly connected to the corresponding support rods. Multiple connecting rods are arranged on the continuous wall. One end of multiple round rods is respectively fixedly connected to the corresponding cross rods. The other end of multiple round rods is connected to the corresponding support rods through the corresponding first flange connectors. The soil reinforcement component is arranged on the continuous retaining wall. The intelligent monitoring system is used to monitor the stress and deformation of the support structure.

2. The foundation pit excavation support equipment according to claim 1, characterized in that: The foundation pit excavation support equipment also includes two sets of adjustment components, which include two screws and two polygonal blocks. The screws are rotatably connected to the frame, and the screws are threadedly engaged with the corresponding support rods. The polygonal blocks are fixedly connected to one end of the screw away from the support rod.

3. The foundation pit excavation support equipment according to claim 2, characterized in that: The adjustment assembly further includes two pulleys and a belt. The two pulleys are respectively fixedly connected to the corresponding screw rods, and the belt is arranged between the two pulleys.

4. The foundation pit excavation support equipment according to claim 3, characterized in that: The frame includes a frame body, multiple vertical rods and a second flange connector. One end of the multiple vertical rods is fixedly connected to the frame body, and the other end of the multiple vertical rods is fixedly connected to the basic base through the corresponding second flange connector.

5. The foundation pit excavation support equipment according to claim 4, characterized in that: The soil reinforcement assembly includes a plurality of grouting pipes, one end of each of the grouting pipes passes through the continuous retaining wall and is inserted into the soil.

6. The foundation pit excavation support equipment according to claim 4, characterized in that: The grouting pipe passes through the continuous retaining wall at an inclination angle of 30-60 degrees, and the end is connected to a high-pressure grouting pump.

7. The foundation pit excavation support equipment according to claim 4, characterized in that: The length of the grouting pipe is 1.2-1.5 times the design depth of the foundation pit, and the end extends to the stable layer of the soil to be reinforced. The specific formula is: L=H×(1.2+0.1k) Among them, L is the length of the grouting pipe, H is the depth of the foundation pit, and k is the loose coefficient of the soil.

8. The foundation pit excavation support equipment according to claim 7, characterized in that: The intelligent monitoring system includes a sensor module, a data acquisition module, an edge computing unit, a central processing unit, a push module, and a management terminal; The data acquisition module is connected to the sensor module, the edge computing unit is connected to the data acquisition module, the central processing unit is connected to the edge computing unit, and the push module is connected to the central processing unit and the processing terminal; the sensor module includes a stress sensor, a MEMS displacement sensor, an earth pressure sensor and a three-dimensional laser scanner, and the stress sensor, the MEMS displacement sensor, the earth pressure sensor and the three-dimensional laser scanner are all connected to the data acquisition module; The stress sensor is embedded in the support rod node to monitor the axial pressure; the MEMS displacement sensor is arranged on the surface of the continuous retaining wall with an accuracy of ±0.05mm; the soil pressure sensor is buried around the grouting pipe to monitor the soil density; the 3D laser scanner periodically generates a point cloud model of the foundation pit; The data acquisition module acquires data collected by the stress sensor, the MEMS displacement sensor, the soil pressure sensor and the three-dimensional laser scanner in real time, and transmits the data to the edge processing unit; The edge processing unit integrates an FPGA chip, runs a Kalman filter algorithm to eliminate data noise, and then transmits it to the central processor; The central processing unit is equipped with an LSTM neural network to predict structural deformation trends and uses a random forest algorithm to identify collapse risks. When a collapse risk is identified, the push module pushes the alarm information to the management terminal.

9. A foundation pit excavation support method, applied to the foundation pit excavation support equipment according to claim 8, characterized in that: The steps include: Cast the foundation base at the bottom of the foundation pit to ensure the stability of the base, and install the continuous retaining wall on the inner wall of the foundation pit to provide preliminary side wall support; Then, the frame is detachably connected to a preset base to ensure the stability of the frame, and then the position of the round rod is adjusted by the adjustment assembly; Then, the continuous retaining wall is indirectly connected to the frame through the first flange connector, and the grouting pipe is laid at an inclination angle of 30-60 degrees, and the grouting pipe is connected to a high-pressure grouting pump; Installing the stress sensor, the MEMS displacement sensor, and the soil pressure sensor at designated locations; The data acquisition module synchronously acquires stress, displacement and earth pressure data at a frequency of 100 Hz; and runs a Kalman filter algorithm through the edge computing unit to eliminate noise and output smooth data to the central processing unit; The central processor loads the LSTM neural network model to predict the structural deformation within the next hour based on historical data; the random forest algorithm analyzes the three-dimensional point cloud data to identify cracks, cavities and local curvature abnormal areas; When the predicted deformation exceeds a threshold or a high-risk area is identified, the central processing unit pushes the alarm information to the management terminal through the push module.

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