An intelligent monitoring system mechanism for deep foundation pit anchor supporting

Abstract

This invention relates to the field of support monitoring technology, specifically to an intelligent monitoring system for deep foundation pit anchored support. It solves the problems of incomplete monitoring data in existing foundation pit support processes, which prevents effective early warning of the foundation pit. Furthermore, direct monitoring of the soil moisture in the foundation pit often results in localized moisture accumulation, affecting the accuracy of long-term moisture monitoring. The system includes a support mechanism and a remote terminal. The support mechanism is located on the inner side of the foundation pit soil layer and includes multiple horizontal beams. Multiple support piles arranged in a circular pattern are installed on the outer side of each horizontal beam. Multiple anchor rods are installed on the inner side of each horizontal beam, and a grouting cavity is provided between the front end of each anchor rod and the foundation pit soil layer. This invention effectively improves the accuracy of early warning operations for foundation pit support by monitoring the displacement of anchor rods and the moisture content of the foundation pit soil layer during the foundation pit support process.

Description

Technical Field

[0001] This invention relates to the field of support monitoring technology, specifically to an intelligent monitoring system for deep foundation pit anchor-type support. Background Technology

[0002] Deep foundation pits refer to excavations exceeding 5 meters (including 5 meters), or projects with particularly complex geological conditions, surrounding environment, and underground pipelines even if the depth does not exceed 5 meters. When constructing deep foundation pits, workers often use the central island excavation method or the basin excavation method. However, this often results in poor slope protection during the excavation process, easily leading to slope collapses and landslides, which can bury equipment and personnel, and significantly impact the overall excavation progress. To prevent foundation pit collapses and endanger the lives of construction workers, it is necessary to monitor various data affecting the safety of the foundation pit support during its construction.

[0003] Existing monitoring data for foundation pit support processes is incomplete and cannot provide effective early warning for foundation pits. Furthermore, when directly monitoring the humidity of the foundation pit soil layer, localized moisture accumulation can easily occur, affecting the accuracy of long-term humidity monitoring. Therefore, it does not meet the current needs. To address this, we propose an intelligent monitoring system for deep foundation pit anchored support. Summary of the Invention

[0004] The purpose of this invention is to provide an intelligent monitoring system for deep foundation pit anchored support, in order to solve the problems mentioned in the background art, such as the incomplete monitoring data in the foundation pit support process, the inability to achieve effective early warning of the foundation pit, and the easy occurrence of local water accumulation when directly monitoring the humidity of the foundation pit soil layer, which affects the accuracy of long-term humidity monitoring.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an intelligent monitoring system for deep foundation pit anchored support, comprising a support mechanism and a remote terminal. The support mechanism is located on the inner side of the foundation pit soil layer. The support mechanism includes multiple waist beams, and multiple support piles arranged in a circular pattern are installed on the outer side of the multiple waist beams. Multiple anchor rods are installed on the inner side of each waist beam. A grouting cavity is provided between the front end of each anchor rod and the foundation pit soil layer. An anchored monitoring mechanism is installed on one side of the grouting cavity. A local power box is installed at the rear end of the anchored monitoring mechanism. A wireless transmission module, a processor, and a signal transceiver are provided on the inner side of the local power box. The remote terminal is connected to the multiple local power boxes via the wireless transmission module. The processor performs local preprocessing of the signals in the anchored monitoring mechanism through the signal transceiver.

[0006] Preferably, the support mechanism further includes a bottom beam fixedly connected to the bottom end of a plurality of support piles, a capping beam installed above the bottom beam, the capping beam being fixedly connected to the upper end of the plurality of support piles, a plurality of waist beams located between the bottom beam and the capping beam, the bottom beam, the plurality of waist beams and the capping beam being arranged sequentially from bottom to top, a platform being installed on the outer side of the rear end of the anchor rod, a bracket being fixedly installed at the bottom end of the platform, the bracket being fixedly connected to the waist beam, and the front end of the anchor rod being inserted into the foundation pit soil layer and installed in an oblique downward state.

[0007] An intelligent monitoring mechanism for deep foundation pit anchored support includes an anchored monitoring mechanism, which comprises a connection and installation unit and a measuring unit. The measuring unit includes a mounting shell, an insertion tube installed on the inner side of the front end of the mounting shell, and multiple water-permeable holes on the outer surface of the insertion tube. A displacement sensor is fixedly installed on the inner side of the middle of the mounting shell, and a connecting rod is slidably connected to the middle of the displacement sensor. An isolation seat is fixedly installed at the front end of the connecting rod, and a humidity sensor is installed above the connecting rod. A support spring is provided on the front end face of the isolation seat, an isolation cotton plate is installed at the front end of the support spring, a connecting steel cable is installed in the middle of the support spring, and a drainage pipe is installed at the lower rear end of the insertion tube. Preferably, the connection and installation unit includes a mounting frame, the upper end of which is fixedly connected to a bracket, a spline shaft is installed on the inner side of the bottom end of the mounting frame, a square column is installed on the inner side of the front end of the spline shaft, a guide hole is provided on the inner side of the square column, an opening groove is provided on the front end of the square column, and a connecting cable is installed on the inner side of the opening groove.

[0008] Preferably, the bottom end of the mounting bracket is provided with a spline hole, the rear end of the spline shaft is inserted into the inner side of the spline hole, the rear end of the connecting cable passes through the opening slot, the guide hole and the spline shaft in sequence and is fixedly connected to the local power box, the local power box is fixedly connected to the upper end of the mounting bracket, and the front end of the connecting cable is electrically connected to the displacement sensor and the humidity sensor.

[0009] Preferably, both ends of the mounting shell are fixedly connected to the spline shaft and the insertion tube, and a sealing ring is provided between the mounting shell, the spline shaft and the isolation seat. The front end of the insertion tube is inserted into the inner side of the foundation pit soil layer, the rear end of the connecting steel cable is fixedly connected to the isolation seat, and the front end of the connecting steel cable passes through the isolation cotton board and the insertion tube and is inserted into the inner side of the grouting cavity.

[0010] Preferably, a humidity sensing chamber is provided between the isolation seat and the isolation cotton board, and a drainage gap is provided between the insertion tube and the connecting steel cable. The isolation cotton board is used to separate the humidity sensing chamber and the drainage gap, and to isolate soil particles.

[0011] Preferably, the upper end of the drain pipe passes through the front end of the mounting shell and is fixedly connected to the rear end of the insertion tube, and the drain pipe and the drain gap are connected through the humidity sensing chamber.

[0012] Preferably, the isolation seat and the isolation cotton board are connected by a support spring, the inner wall of the middle part of the mounting shell is provided with a limiting ring, the rear end face of the isolation seat is in close contact with the limiting ring, the front end of the humidity sensor passes through the isolation seat and is inserted into the inner side of the humidity sensing chamber, and the isolation seat and the humidity sensor are fixedly connected.

[0013] Preferably, the rear end of the connecting slide rod passes through the displacement sensor and is inserted into the inside of the guide hole, and the spline shaft, square column, connecting steel cable and connecting slide rod are coaxial.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. In this invention, the measuring unit is inserted into the soil layer of the foundation pit and kept directly below the anchor rod. The spline shaft and measuring unit are fixed in the soil layer of the foundation pit by fixing the mounting frame and the bracket, thus maintaining the stability of the anchor monitoring mechanism. The front end of the connecting steel cable is inserted into the inner side of the grouting cavity. At this time, grouting is performed in the grouting cavity between the anchor rod and the soil layer of the foundation pit. The front end of the connecting steel cable can be stably connected to the front end of the anchor rod after the grouting is cured. When the anchor rod is displaced due to changes in the soil layer during the anchoring support of the foundation pit, the connecting steel cable can be pulled synchronously by the grouting body. Then, the connecting steel cable drives the connecting slide rod to slide axially inside the displacement sensor through the isolation seat. The displacement sensor can monitor the displacement of the anchor rod during support by measuring the sliding amount of the connecting slide rod. 2. This invention uses multiple permeable holes to release moisture from the soil layer of the foundation pit and guides it to the humidity sensing chamber through drainage gaps. The humidity sensor measures the humidity in the humidity sensing chamber to monitor the moisture content of the soil layer of the foundation pit, which facilitates early warning of the stability of the foundation pit support. The displacement sensor and the data measured by the displacement sensor can be transmitted to the local junction box through the connecting cable. The data is preprocessed by multiple local junction boxes and then transmitted synchronously to the remote terminal through multiple local junction boxes via a wireless transmission module. This facilitates real-time monitoring of the anchoring effect of each anchor in the deep foundation pit support process, and improves the intelligent support and early warning of the entire deep foundation pit. 3. This invention uses a sealing ring to separate the interior of the mounting housing by using an isolation seat, which helps to keep the displacement sensor and humidity sensor in a dry operating environment, extending their service life. The isolation seat can maintain its initial state under the elastic support of the support spring, improving monitoring accuracy. Furthermore, the isolation cotton board separates the humidity sensing chamber and the drainage gap, which helps to block soil particles from seeping into the drainage gap from the water permeable holes, preventing soil particles from accumulating in the humidity sensing chamber and causing jamming of the isolation seat, thus maintaining the monitoring effect of the humidity sensor. The drainage pipe facilitates the timely discharge of water in the humidity sensing chamber, enabling the humidity sensor to measure the moisture content of the soil layer in the foundation pit in real time. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 For the present invention Figure 1 Schematic diagram of the cross-sectional structure of region A in the middle; Figure 3 This is a schematic diagram of the anchor monitoring mechanism of the present invention; Figure 4 This is a cross-sectional structural schematic diagram of the anchor monitoring mechanism of the present invention; Figure 5 This is a schematic diagram of the connection and installation unit of the present invention.

[0016] In the diagram: 1. Support mechanism; 101. Bottom beam; 102. Waist beam; 103. Crown beam; 104. Support pile; 105. Anchor bolt; 106. Grouting cavity; 107. Bracket; 108. Platform; 2. Anchoring monitoring mechanism; 3. Connection and installation unit; 301. Mounting frame; 302. Splined shaft; 303. Connecting cable; 304. Square column; 305. Guide hole; 306. Opening slot; 4. Measurement unit; 401. Mounting shell; 402. Inserted pipe; 403. Water permeable hole; 404. Connecting steel cable; 405. Drainage pipe; 406. Displacement sensor; 407. Isolation seat; 408. Humidity sensor; 409. Connecting slide rod; 410. Support spring; 411. Isolation cotton board; 5. Local junction box. Detailed Implementation

[0017] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0018] Please see Figures 1 to 3This invention provides an embodiment of an intelligent monitoring system for deep foundation pit anchored support, comprising a support mechanism 1 and a remote terminal. The support mechanism 1 is located on the inner side of the foundation pit soil layer. The support mechanism 1 includes multiple waist beams 102, and multiple support piles 104 arranged in a circular pattern are installed on the outer side of the multiple waist beams 102. Multiple anchor rods 105 are installed on the inner side of each waist beam 102. A grouting cavity 106 is provided between the front end of each anchor rod 105 and the foundation pit soil layer. An anchored monitoring mechanism 2 is installed on one side of the grouting cavity 106. The anchor monitoring mechanism 2 is equipped with a local power box 5 at its rear end. The inside of the local power box 5 is equipped with a wireless transmission module, a processor and a signal transceiver. The remote terminal and multiple local power boxes 5 are connected to each other through the wireless transmission module. The processor performs local preprocessing of the signals in the anchor monitoring mechanism 2 through the signal transceiver. Multiple local power boxes 5 transmit the signals to the remote terminal synchronously through the wireless transmission module, which facilitates real-time monitoring of the anchoring effect during the deep foundation pit support process and improves the intelligent support and early warning of the entire deep foundation pit.

[0019] Please see Figure 1 and Figure 2 The support mechanism 1 also includes a bottom beam 101 fixedly connected to the bottom end of a plurality of support piles 104. A crown beam 103 is installed above the bottom beam 101. The crown beam 103 is fixedly connected to the upper end of the plurality of support piles 104. A plurality of waist beams 102 are located between the bottom beam 101 and the crown beam 103. The bottom beam 101, the plurality of waist beams 102 and the crown beam 103 are arranged in sequence from bottom to top. A platform 108 is installed on the outer side of the rear end of the anchor rod 105. A bracket 107 is fixedly installed at the bottom end of the platform 108. The bracket 107 is fixedly connected to the waist beam 102. The front end of the anchor rod 105 is inserted into the soil layer of the foundation pit and is installed in an oblique downward state.

[0020] Please see Figure 3 and Figure 4 An intelligent monitoring mechanism for deep foundation pit anchored support includes an anchor monitoring mechanism 2, which consists of a connection and installation unit 3 and a measurement unit 4. The measurement unit 4 includes an installation shell 401, an insertion tube 402 installed on the inner side of the front end of the installation shell 401, and multiple water-permeable holes 403 on the outer surface of the insertion tube 402. A displacement sensor 406 is fixedly installed on the inner side of the middle part of the installation shell 401. A connecting slide rod 409 is slidably connected to the middle part of the displacement sensor 406. An isolation seat 407 is fixedly installed at the front end of the connecting slide rod 409. The displacement sensor 406 can monitor the displacement of the anchor rod 105 during support by measuring the sliding amount of the connecting slide rod 409. A humidity sensor 408 is installed above the connecting slide rod 409. A support spring 410 is provided on the front end face of the isolation seat 407. An isolation cotton plate 411 is installed on the front end of the support spring 410. The isolation seat 407 and the isolation cotton plate 411 are connected by the support spring 410. A limiting ring is provided on the inner wall of the middle part of the mounting shell 401. The rear end face of the isolation seat 407 is in close contact with the limiting ring. The front end of the humidity sensor 408 passes through the isolation seat 407 and is inserted into the inner side of the humidity sensing chamber. The isolation seat 407 and the humidity sensor 408 are fixedly connected. By measuring the humidity in the humidity sensing chamber through the humidity sensor 408, the water content in the soil layer of the foundation pit can be monitored, which facilitates early warning of the stability of the foundation pit support. A connecting steel cable 404 is installed in the middle of the supporting spring 410. The front end of the insertion tube 402 is inserted into the inner side of the soil layer of the foundation pit. The rear end of the connecting steel cable 404 is fixedly connected to the isolation seat 407. The front end of the connecting steel cable 404 passes through the isolation cotton board 411 and the insertion tube 402 and is inserted into the inner side of the grouting cavity 106. A humidity sensing chamber is provided between the isolation seat 407 and the isolation cotton board 411. A drainage gap is provided between the insertion tube 402 and the connecting steel cable 404. The isolation cotton board 411 is used to separate the humidity sensing chamber and the drainage gap and to isolate soil particles. By separating the humidity sensing chamber and the drainage gap through the isolation cotton board 411, it is easy to block soil particles that seep into the drainage gap from the water permeable hole 403, avoid the accumulation of soil particles in the humidity sensing chamber, prevent the isolation seat 407 from getting stuck, and maintain the monitoring effect of the humidity sensor 408. A drain pipe 405 is installed at the lower part of the rear end of the insertion tube 402. The upper end of the drain pipe 405 passes through the front end of the mounting shell 401 and is fixedly connected to the rear end of the insertion tube 402. The drain pipe 405 and the drainage gap are connected through the humidity sensing chamber. The drain pipe 405 facilitates the timely discharge of moisture in the humidity sensing chamber, which is convenient for the humidity sensor 408 to measure the moisture content in the soil layer of the foundation pit in real time.

[0021] Please see Figures 3 to 5The connecting installation unit 3 includes a mounting bracket 301. The upper end of the mounting bracket 301 is fixedly connected to the bracket 107. A spline shaft 302 is mounted on the inner side of the bottom end of the mounting bracket 301. Both ends of the mounting housing 401 are fixedly connected to the spline shaft 302 and the insertion tube 402. Sealing rings are provided between the mounting housing 401, the spline shaft 302, and the isolation seat 407. A square column 304 is mounted on the inner side of the front end of the spline shaft 302. A guide hole 305 is provided on the inner side of the square column 304. The rear end of the connecting slide rod 409 passes through the displacement sensor 406 and is inserted into the inner side of the guide hole 305. The spline shaft 302, the square column 304, the connecting steel cable 404, and the connecting slide rod 409 are coaxial. The front end of 04 is provided with an opening groove 306, and a connecting cable 303 is installed on the inner side of the opening groove 306. The bottom end of the mounting bracket 301 is provided with a spline hole. The rear end of the spline shaft 302 is inserted into the inner side of the spline hole. The rear end of the connecting cable 303 passes through the opening groove 306, the guide hole 305 and the spline shaft 302 in sequence and is fixedly connected to the local power box 5. The local power box 5 is fixedly connected to the upper end of the mounting bracket 301. The front end of the connecting cable 303 is electrically connected to the displacement sensor 406 and the humidity sensor 408. By fixing the mounting bracket 301 to the bracket 107, it is easy to fix the spline shaft 302 and the measuring unit 4 in the foundation pit soil layer and maintain the stability of the anchor monitoring mechanism 2.

[0022] In summary, when monitoring the deep foundation pit anchor support process, an anchor monitoring mechanism 2 is installed below each anchor rod 105. Specifically, the isolation seat 407 is installed inside the mounting shell 401, so that the front end of the connecting slide rod 409 passes through the displacement sensor 406 and is fixedly connected to the isolation seat 407. Then, both ends of the mounting shell 401 are fixedly connected to the spline shaft 302 and the insertion tube 402, so that the mounting shell 401, the spline shaft 302 and the isolation seat 407 are all connected by sealing rings. When the power is turned on, the rear end of the connecting cable 303 passes through the opening slot 306, the guide hole 305 and the spline shaft 302 and is fixedly connected to the local junction box 5. Then, the measuring unit 4 is inserted into the soil layer of the foundation pit, and 2 is kept directly below the anchor rod 105. At the same time, the bottom end of the mounting frame 301 is provided with a spline hole, and the spline shaft 302 is inserted into the inside of the spline hole. By fixing the mounting frame 301 to the bracket 107, it is easy to fix the spline shaft 302 and the measuring unit 4 in the soil layer of the foundation pit, and maintain the stability of the anchor monitoring mechanism 2. The front end of the connecting steel cable 404 is inserted into the inner side of the grouting cavity 106. At this time, grouting is performed in the grouting cavity 106, that is, between the anchor rod 105 and the soil layer of the foundation pit. The front end of the connecting steel cable 404 can be stably connected to the front end of the anchor rod 105 after the grouting is cured. When the anchor rod 105 is displaced due to the change of soil layer during the anchoring support of the foundation pit, the connecting steel cable 404 can be pulled synchronously through the grouting body. Then, the connecting steel cable 404 drives the connecting slide rod 409 to slide axially inside the displacement sensor 406 through the isolation seat 407. The displacement sensor 406 can monitor the displacement of the anchor rod 105 during support by measuring the sliding amount of the connecting slide rod 409. Meanwhile, the drainage pipe 405 and the drainage gap are connected through the humidity sensing chamber. During the contact between the insertion pipe 402 and the soil layer of the foundation pit, the water in the soil layer of the foundation pit can be extracted through multiple water-permeable holes 403 and guided into the humidity sensing chamber through the drainage gap. The front end of the humidity sensor 408 passes through the isolation seat 407 and is inserted into the humidity sensing chamber. Then, by measuring the humidity in the humidity sensing chamber through the humidity sensor 408, the water content in the soil layer of the foundation pit can be monitored, which facilitates the early warning of the stability of the foundation pit support. The displacement sensor 406 and the data measured by the displacement sensor 406 can be transmitted to the local junction box 5 through the connecting cable 303. The data can be preprocessed by multiple local junction boxes 5, and then the data can be transmitted synchronously to the remote terminal through the wireless transmission module. This facilitates real-time monitoring of the anchoring effect of each anchor bolt 105 in the deep foundation pit support process, and improves the intelligent support and early warning of the entire deep foundation pit. The isolation seat 407, through a sealing ring, can separate the interior of the mounting housing 401, facilitating the maintenance of a dry operating environment for the displacement sensor 406 and the humidity sensor 408, thus extending their service life. Simultaneously, the isolation seat 407 is connected to the isolation cotton plate 411 via a support spring 410. Under the elastic support of the support spring 410, the isolation seat 407 maintains its initial state, improving monitoring accuracy. Furthermore, the isolation cotton plate 411 separates the humidity sensing chamber from the drainage gap, preventing soil particles from seeping into the drainage gap through the permeable hole 403. This avoids soil particle accumulation in the humidity sensing chamber, preventing jamming of the isolation seat 407 and maintaining the monitoring effect of the humidity sensor 408. The drainage pipe 405 facilitates the timely discharge of moisture from the humidity sensing chamber, enabling the humidity sensor 408 to measure the moisture content of the soil layer in the foundation pit in real time.

[0023] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. An intelligent monitoring system for deep foundation pit anchored support, comprising a support mechanism (1) and a remote terminal, characterized in that: The support mechanism (1) is set on the inner side of the foundation pit soil layer. The support mechanism (1) includes multiple waist beams (102). Multiple support piles (104) arranged in a circle are installed on the outer side of the multiple waist beams (102). Multiple anchor rods (105) are installed on the inner side of each waist beam (102). A grouting cavity (106) is provided between the front end of each anchor rod (105) and the foundation pit soil layer. An anchor monitoring mechanism (2) is installed on one side of the grouting cavity (106). A local power box (5) is installed at the rear end of the anchor monitoring mechanism (2). A wireless transmission module, a processor and a signal transceiver are provided on the inner side of the local power box (5). The remote terminal and the multiple local power boxes (5) are connected by a signal through the wireless transmission module. The processor performs local preprocessing of the signal in the anchor monitoring mechanism (2) through the signal transceiver.

2. The intelligent monitoring system for deep foundation pit anchored support according to claim 1, characterized in that: The support mechanism (1) also includes a bottom beam (101) fixedly connected to the bottom end of a plurality of support piles (104). A crown beam (103) is installed above the bottom beam (101). The crown beam (103) is fixedly connected to the upper end of the plurality of support piles (104). A plurality of waist beams (102) are located between the bottom beam (101) and the crown beam (103). The bottom beam (101), the plurality of waist beams (102) and the crown beam (103) are arranged in order from bottom to top. A platform (108) is installed on the outer side of the rear end of the anchor rod (105). A bracket (107) is fixedly installed at the bottom end of the platform (108). The bracket (107) is fixedly connected to the waist beam (102). The front end of the anchor rod (105) is inserted into the soil layer of the foundation pit and is installed in an oblique downward state.

3. An intelligent monitoring mechanism for deep foundation pit anchored support, the intelligent monitoring system for deep foundation pit anchored support according to any one of claims 1-2, comprising an anchored monitoring mechanism (2), characterized in that: The anchor monitoring mechanism (2) consists of a connection and installation unit (3) and a measuring unit (4). The measuring unit (4) includes a mounting shell (401). An insertion tube (402) is installed on the inner side of the front end of the mounting shell (401). The outer surface of the insertion tube (402) is provided with multiple water-permeable holes (403). A displacement sensor (406) is fixedly installed on the inner side of the middle part of the mounting shell (401). A connecting slide rod (409) is slidably connected to the middle part of the displacement sensor (406). An isolation seat (407) is fixedly installed at the front end of the connecting slide rod (409). A humidity sensor (408) is installed above the connecting slide rod (409). A support spring (410) is provided on the front end face of the isolation seat (407). An isolation cotton board (411) is installed at the front end of the support spring (410). A connecting steel cable (404) is installed in the middle part of the support spring (410). A drain pipe (405) is installed at the lower part of the rear end of the insertion tube (402).

4. The intelligent monitoring mechanism for deep foundation pit anchored support according to claim 3, characterized in that: The connection and installation unit (3) includes a mounting bracket (301), the upper end of which is fixedly connected to the bracket (107). A spline shaft (302) is installed on the inner side of the bottom end of the mounting bracket (301). A square column (304) is installed on the inner side of the front end of the spline shaft (302). A guide hole (305) is provided on the inner side of the square column (304). An opening groove (306) is provided on the front end of the square column (304). A connecting cable (303) is installed on the inner side of the opening groove (306).

5. The intelligent monitoring mechanism for deep foundation pit anchored support according to claim 4, characterized in that: The bottom end of the mounting bracket (301) is provided with a spline hole. The rear end of the spline shaft (302) is inserted into the inner side of the spline hole. The rear end of the connecting cable (303) passes through the opening slot (306), the guide hole (305) and the spline shaft (302) in sequence and is fixedly connected to the local power box (5). The local power box (5) is fixedly connected to the upper end of the mounting bracket (301). The front end of the connecting cable (303) is electrically connected to the displacement sensor (406) and the humidity sensor (408).

6. The intelligent monitoring mechanism for deep foundation pit anchored support according to claim 5, characterized in that: Both ends of the mounting shell (401) are fixedly connected to the spline shaft (302) and the insertion tube (402). A sealing ring is provided between the mounting shell (401), the spline shaft (302), and the isolation seat (407). The front end of the insertion tube (402) is inserted into the inner side of the foundation pit soil layer. The rear end of the connecting steel cable (404) is fixedly connected to the isolation seat (407). The front end of the connecting steel cable (404) passes through the isolation cotton board (411) and the insertion tube (402) and is inserted into the inner side of the grouting cavity (106).

7. The intelligent monitoring mechanism for deep foundation pit anchored support according to claim 6, characterized in that: A humidity sensing chamber is provided between the isolation seat (407) and the isolation cotton board (411), and a drainage gap is provided between the insertion tube (402) and the connecting steel cable (404). The isolation cotton board (411) is used to separate the humidity sensing chamber and the drainage gap and to isolate soil particles.

8. The intelligent monitoring mechanism for deep foundation pit anchored support according to claim 7, characterized in that: The upper end of the drain pipe (405) passes through the front end of the mounting shell (401) and is fixedly connected to the rear end of the insertion tube (402). The drain pipe (405) and the drainage gap are connected through the humidity sensing chamber.

9. The intelligent monitoring mechanism for deep foundation pit anchored support according to claim 8, characterized in that: The isolation seat (407) and the isolation cotton board (411) are connected by a support spring (410). The inner wall of the middle part of the mounting shell (401) is provided with a limiting ring. The rear end face of the isolation seat (407) is in close contact with the limiting ring. The front end of the humidity sensor (408) passes through the isolation seat (407) and is inserted into the inner side of the humidity sensing chamber. The isolation seat (407) and the humidity sensor (408) are fixedly connected.

10. The intelligent monitoring mechanism for deep foundation pit anchored support according to claim 9, characterized in that: The rear end of the connecting slide rod (409) passes through the displacement sensor (406) and is inserted into the inside of the guide hole (305). The spline shaft (302), the square column (304), the connecting steel cable (404) and the connecting slide rod (409) are coaxial.

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