Intelligent monitoring and dewatering construction method for water-rich deep foundation pit

Abstract

The application provides a kind of water-rich deep foundation pit intelligent monitoring precipitation construction method, comprising: step S1, after field investigation, the four around deep foundation pit is reasonably distributed and marked precipitation well point, using drilling machine such equipment is punched in mark, to form precipitation well hole;Step S2, first, the main filter tube adapted to the precipitation well hole is placed, then the secondary filter tube adapted to the main filter tube is placed, before placing the secondary filter tube, the water plugging platform is arranged in the secondary filter tube, and the water plugging platform is located in the confined water level;Step S3, the force arm is vertically installed in the secondary filter tube.The application can realize water level dynamic adjustment, so that the deep foundation pit precipitation is automated, greatly improves the safety of deep foundation pit engineering groundwater level control, saves a lot of labor cost, ensures the smooth construction of deep foundation pit, the water plugging platform can form a stable plugging structure for the precipitation well pipe under the adjustment of the force arm, without grouting plugging, reduces the construction cost.

Description

Technical Field

[0001] This invention belongs to the field of foundation pit construction technology, specifically relating to an intelligent monitoring and dewatering construction method for deep water-rich foundation pits. Background Technology

[0002] Dewatering of foundation pits refers to the dewatering work carried out when the groundwater level is higher than the bottom of the excavation pit and groundwater will continuously seep into the pit. In order to ensure that the foundation pit can be constructed under dry conditions, and to prevent slope instability, quicksand in the foundation, pit bottom heave and reduction of foundation bearing capacity.

[0003] In traditional foundation pit dewatering in water-rich strata, dewatering wells are set up around the foundation pit, and dewatering construction is mainly monitored manually. However, for deep foundation pits with large areas and water-rich strata, the number of dewatering wells is large, which greatly reduces the effectiveness of manual monitoring and makes it impossible to guarantee the safety of groundwater level control in the foundation pit. Furthermore, grouting and sealing of wells are required at the end of the dewatering construction. However, the quality of underwater grouting and sealing is difficult to control, which can easily lead to failure of dewatering well filter pipe sealing and reduce the construction quality of the dewatering project.

[0004] Therefore, there is a need to provide an improved technical solution that addresses the shortcomings of the existing technology. Summary of the Invention

[0005] The purpose of this invention is to overcome the problems in the prior art where manual monitoring of foundation pit dewatering construction is inefficient, cannot guarantee the safety of groundwater level control in the foundation pit, and the quality of the final grouting and well sealing operation of dewatering construction is difficult to control, which can easily lead to the failure of dewatering well filter pipe sealing and reduce the construction quality of dewatering projects. This invention provides an intelligent monitoring and dewatering construction method for water-rich deep foundation pits.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A smart monitoring and dewatering construction method for deep foundation pits with abundant water includes:

[0008] Step S1: After on-site investigation, dewatering well points are reasonably distributed and marked around the deep foundation pit. Drilling equipment such as drilling rigs is used to drill holes at the marked locations to form dewatering well holes.

[0009] Step S2: First, place a suitable main filter pipe in the well hole, and then place a suitable secondary filter pipe in the main filter pipe. Before placing the secondary filter pipe, set a water blocking platform in the secondary filter pipe. The water blocking platform is located in the pressurized water level.

[0010] Step S3: Vertically install a force transmission arm inside the secondary filter tube, ensuring that the upper end of the force transmission arm extends outside the secondary filter tube. The force transmission arm is used to adjust the water blocking and water discharge effects of the water blocking platform.

[0011] Step S4: A water pump and a drainage ditch are set up near the wellhead of the dewatering well. The pumping pipe of the water pump extends to the water blocking platform inside the secondary filter pipe, and the outlet pipe of the water pump extends into the drainage ditch.

[0012] Step S5: Before installing the transmission arm, first install a float arm on the transmission arm so that the float arm slides along the axis of the transmission arm. Then, set a sensor on the edge of the deep foundation pit. When the upper end of the float arm protrudes from the wellhead of the dewatering well, it is sensed by the sensor. The sensor transmits the signal to the water pump control element in the control box. The water pump control element starts the water pump to automatically dewater.

[0013] Step S6: After the deep foundation pit bottom slab is poured, the water blocking platform is adjusted by the force transmission arm so that the water blocking platform intercepts the water in the secondary filter pipe below.

[0014] Step S7: The water in the secondary filter pipe above the water blocking platform is discharged out of the well by the water pump, the water pump pipe is taken out, and finally the transmission arm and the float arm are taken out.

[0015] Step S8: Pour concrete into the secondary filter pipe above the water-blocking platform until the ground surface, and the dewatering construction is completed.

[0016] In the above-described intelligent monitoring and dewatering construction method for deep foundation pits with abundant water, preferably, in step S2, the water-blocking platform includes: a blocking plate and an adjusting plate, the blocking plate having a receiving cavity on the side facing the wellhead of the dewatering well, and the cavity wall of the receiving cavity being threaded.

[0017] The lower end of the adjusting plate extends into the receiving cavity and is threadedly connected thereto, so that the adjusting plate can be rotated and slid within the receiving cavity.

[0018] The lower surface of the adjustment plate is a smooth plane.

[0019] Preferably, the adjusting plate has a water flow hole in the middle, and a rectangular screw block protrudes from the upper end of the adjusting plate corresponding to the water flow hole.

[0020] Preferably, a plug rod is provided inside the receiving cavity, and a plug groove is provided on the side of the plug plate opposite to the wellhead of the corresponding dewatering well, corresponding to the plug rod;

[0021] The plug rod is hollow, and the top and bottom of the plug rod are provided with water-permeable holes along the radial direction. The lower end of the plug rod is fitted with a sealing bladder, which is located outside the plug plate.

[0022] Preferably, the closure capsule comprises: a rubber bladder and two rubber plates, wherein the rubber bladder is connected between the two rubber plates;

[0023] The sealed bladder has a sleeve hole in the middle, and the lower end of the plug rod extends from the receiving cavity to the plug groove, during which the plug rod passes through the sleeve hole;

[0024] A compression plate is fixed to the lower end of the plug rod.

[0025] Preferably, a spring is fitted around the plug rod, the upper end of the spring not exceeding the water-permeable hole at the top of the plug rod, and the lower end of the spring abutting the bottom of the receiving cavity under its own recoil.

[0026] Preferably, the force transmission arm is hollow, the lower end of the force transmission arm is provided with a rectangular opening that matches the screw block, and the bottom side wall of the force transmission arm is provided with a water outlet.

[0027] The rectangular opening at the lower end of the force transmission arm is aligned with the screw block and fitted onto the adjustment plate.

[0028] Preferably, a floating component is provided between the force transmission arm and the floating arm. The floating component includes a float ring, a directional sliding arm, and a rail ring. A directional channel is provided radially at the bottom of the force transmission arm. The directional channel is located above the water outlet. The float ring is sleeved on the outside of the force transmission arm.

[0029] Preferably, the directional sliding arm includes a clamp and a sliding arm. The clamp is fitted over the outside of the float, one end of the sliding arm is connected to the clamp, and the other end of the sliding arm has a directional slider protruding into the directional channel.

[0030] Preferably, a slip ring is fitted inside the track of the rail ring, and the lower end of the floating arm is connected to the slip ring.

[0031] Beneficial effects: This invention enables dynamic water level adjustment, automates dewatering in deep foundation pits, greatly improves the safety of groundwater level control in deep foundation pit projects, saves a lot of labor costs, and ensures the smooth construction of deep foundation pits.

[0032] The water-blocking platform in this invention, under the adjustment of the force transmission arm, can form a stable sealing structure for the dewatering well pipe, eliminating the need for grouting and sealing, reducing construction costs, and ensuring the quality of dewatering construction in deep foundation pits. Attached Figure Description

[0033] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. Wherein:

[0034] Figure 1 This is the front view of the present invention;

[0035] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0036] Figure 3 for Figure 1 Enlarged view at point B in the middle;

[0037] Figure 4 This is an overall schematic diagram of the force transmission arm structure of the present invention;

[0038] Figure 5 for Figure 4 A bottom view;

[0039] Figure 6 for Figure 4 A schematic diagram of the upper part of the transmission arm structure.

[0040] In the diagram: 1. Main filter pipe; 2. Secondary filter pipe; 3. Force transmission arm; 301. Water outlet; 4. Water pump; 5. Drainage ditch; 6. Float arm; 7. Sensor; 8. Blocking plate; 9. Adjusting plate; 10. Receiving cavity; 11. Water flow through hole; 12. Tightening block; 13. Blocking rod; 131. Baffle; 14. Blocking groove; 15. Water permeable hole; 16. Rubber bladder; 17. Rubber plate; 18. Extrusion plate; 19. Spring; 20. Rectangular opening; 21. Float ring; 22. Rail ring; 23. Directional channel; 24. Hoop; 25. Sliding arm; 26. Directional slider; 27. Slip ring; 28. Crossbar; 29. ​​Frame. Detailed Implementation

[0041] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art are within the scope of protection of the present invention.

[0042] In the description of this invention, the terms "longitudinal," "lateral," "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; they can refer to a direct connection or an indirect connection through intermediate components. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0043] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other.

[0044] Example

[0045] A smart monitoring and dewatering construction method for deep foundation pits with abundant water includes the following steps:

[0046] Step S1: After on-site investigation, dewatering well points are reasonably distributed and marked around the deep foundation pit. Drilling equipment such as drilling rigs is used to drill holes at the marked locations to form dewatering well holes.

[0047] Step S2, refer to Figure 1 and Figure 2 First, a suitable main filter pipe 1 is placed in the well hole. Then, a suitable secondary filter pipe 2 is placed in the main filter pipe 1. Before placing the secondary filter pipe 2, a water-blocking platform is set in the secondary filter pipe 2. The water-blocking platform is located in the pressurized water level.

[0048] Step S2.1, the water blocking platform includes: a blocking plate 8 and an adjusting plate 9. The side of the blocking plate 8 is welded to the inner wall of the secondary filter pipe 2. The upper surface of the blocking plate 8 is provided with an annular receiving cavity 10, and the cavity wall of the receiving cavity 10 is machined with threads. The side of the adjusting plate 9 is machined with external threads that are compatible with the receiving cavity 10. The lower end of the adjusting plate 9 is inserted into the receiving cavity 10, so that the adjusting plate 9 and the blocking plate 8 are threaded together, so that the adjusting plate 9 can be rotated to move up and down in the receiving cavity 10. The lower surface of the adjusting plate 9 is a smooth plane, which serves as a pressing surface. The middle part of the adjusting plate 9 is provided with a water flow hole 11. The upper end of the adjusting plate 9 is provided with a rectangular screw block 12 corresponding to the water flow hole 11. The screw block 12 is driven by external force and is hollow to connect with the water flow hole 11.

[0049] Step S2.1.1: A plug rod 13 is provided in the receiving cavity 10. A plug groove 14 is provided on the lower plate surface of the plug plate 8 corresponding to the plug rod 13. The plug rod 13 is hollow to allow water to flow inside. Radial water-permeable holes 15 are provided at the top and bottom of the plug rod 13. A sealing bag is fitted at the lower end of the plug rod 13. The sealing bag is located outside the plug plate 8 corresponding to the plug groove 14. The sealing bag includes: a rubber bag 16 and two rubber plates 17. The rubber bag 16 is connected between the two rubber plates 17. The width of the rubber bag 16 and the rubber plates 17 is the same as that of the plug groove 14. A sleeve hole is provided in the middle of the sealing bag. The lower end of the plug rod 13 extends from the receiving cavity 10 to the plug groove 14. During this period, the plug rod 13 passes through the sleeve hole so that the sealing bag is fitted on the plug rod 13. A compression plate 18 is fixed at the lower end of the plug rod 13. The compression plate 18 can prevent the sealing bag from falling off from the lower end of the plug rod 13.

[0050] A spring 19 is fitted on the outside of the plug rod 13. The spring 19 is located in the receiving cavity 10. A baffle 131 is fixed to the upper end of the plug rod 13. The baffle 131 prevents the upper end of the spring 19 from exceeding the water-permeable hole 15 at the top of the plug rod 13. When the spring 19 returns, it will generate a pushing force on the baffle 131. This pushing force causes the plug rod 13 to move upward as a whole. The extrusion plate 18 at the lower end of the plug rod 13 will first bring the sealing bladder into the plug groove 14, and then apply pressure to the sealing bladder. This causes the rubber bladder 16 to expand under the pressure of the two rubber plates 17. By setting the rubber plates 17 at the upper and lower positions of the rubber bladder 16, the rubber bladder 16 can only expand laterally. The expansion of the rubber bladder 16 seals the plug groove 14 and fills the gap between the rubber bladder 16 and the plug rod 13, thus ensuring the water-blocking performance of the sealing bladder.

[0051] The water-blocking platform in this step should be referenced during actual operation. Figure 1 and Figure 2 At this time, the water blocking platform is in a closed state. By rotating the adjusting plate 9, it moves towards the bottom of the cavity 10, causing the adjusting plate 9 to press the upper end of the blocking rod 13. The blocking rod 13 moves downward under pressure. At this time, due to the upward surging force of the pressurized water, the blocking bladder will not detach from the blocking groove 14. When the water permeable hole 15 at the bottom of the blocking rod 13 is exposed in the pressurized water below the water blocking platform, the water will flow from the water permeable hole 15 at the bottom of the blocking rod 13 into its cavity, and then flow out from the water permeable hole 15 at the top of the blocking rod 13 to enter the cavity 10. When the cavity 10 is full, the pressurized water will flow from the water flow passage 11 in the middle of the adjusting plate 9 into the dewatering well pipe above the water blocking platform.

[0052] Step S3, refer to Figure 1 , Figure 3 , Figure 4 , Figure 5 and Figure 6 A force transmission arm 3 is vertically installed inside the secondary filter tube 2, ensuring that the upper end of the force transmission arm 3 extends outside the secondary filter tube 2. The force transmission arm 3 is used to adjust the water blocking and water discharge effects of the water blocking platform.

[0053] Step S3.1: The transmission arm 3 is hollow to allow the pump pipe to pass through it. A pair of crossbars 28 are symmetrically welded to the upper end of the transmission arm 3. A handrail 29 is installed at the end of the crossbar 28 away from the transmission arm 3 so that the operator can rotate the transmission arm 3. The lower end of the transmission arm 3 is provided with a rectangular opening 20 for matching screw block 12. At the same time, the bottom of the transmission arm 3 is provided with a water outlet hole 301 radially. The rectangular opening 20 of the transmission arm 3 is placed downward in the dewatering well pipe, and the screw block 12 on the upper surface of the adjusting plate 9 is inserted into the rectangular opening 20. The adjusting plate 9 can then be indirectly rotated through the transmission arm 3.

[0054] Step S4: Install a water pump 4 and a drainage ditch 5 near the wellhead of the dewatering well. The pumping pipe on the water pump 4 extends to the water blocking platform inside the secondary filter pipe 2, and the outlet pipe of the water pump 4 extends into the drainage ditch 5.

[0055] Step S4.1: The pump pipe of the water pump 4 passes through the central hole on the force transmission arm 3, so that the pipe opening extends into the receiving cavity 10 to improve the pumping quality.

[0056] Step S5: Before installing the transmission arm 3, first install the float arm 6 on the transmission arm 3 so that the float arm 6 slides along the axis of the transmission arm 3. Then, set the sensor 7 at the edge of the deep foundation pit. When the upper end of the float arm 6 protrudes from the wellhead of the dewatering well, it is sensed by the sensor 7. The sensor 7 transmits the signal to the water pump control element in the control box, and the water pump control element starts the water pump 4 to automatically dewater.

[0057] Step S5.1: A floating component connects the force transmission arm 3 and the float arm 6. This floating component includes a float ring 21, a directional sliding arm, and a track ring 22. A directional channel 23 is radially provided at the bottom of the force transmission arm 3, located above the water outlet 301. The float ring 21 is fitted over the outside of the force transmission arm 3. The directional sliding arm includes a clamp 24 and a sliding arm 25. The clamp 24 is fixedly fitted over the outside of the float ring 21, preventing the float ring 21 from directly contacting the force transmission arm 3 and avoiding wear and breakage of the float ring 21 over long-term use. The lower end of the sliding arm 25 is welded and fixed to the clamp 24. The upper end is connected to the rail ring 22, and a directional slider 26 protrudes into the directional channel 23. The directional slider 26 enables the entire floating component to only move vertically up and down along the axis of the force transmission arm 3. A slip ring 27 is fitted inside the rail ring 22. The outer wall of the slip ring 27 is fixed to the lower end of the floating arm 6 to support the floating arm 6. The inner wall of the slip ring 27 is rough to increase the friction between the slip ring 27 and the rail ring 22 and prevent the slip ring 27 from rotating arbitrarily, but it does not prevent the slip ring 27 from being rotated by external force. The purpose is to ensure that rotating the force transmission arm 3 will not affect the normal operation of the floating arm 6.

[0058] In this step, the float 21 will be suspended by the water flow into the dewatering well pipe above the water blocking platform. The initial position of the float 21 is at the pressurized water level. When the position of the float 21 rises just above the normal water level of the deep foundation pit, the top of the float arm 6 is opposite to the sensor 7. The top of the float arm 6 serves as the sensing object of the sensor 7. At this time, the sensor 7 will send a signal to the water pump control element in the control box, and then the water pump control element will start the water pump 4 to pump water, thereby realizing the dewatering operation.

[0059] Step S5.2: Sensor 7 is a common infrared sensor on the market. The control box can be set near the water pump 4 so that the control box and the water pump 4 can transmit information through electrical connection to ensure stable operation of the equipment.

[0060] Step S6: After the deep foundation pit bottom slab is poured, the water blocking platform is adjusted by the force transmission arm 3 so that the water blocking platform can block the water in the secondary filter pipe 2 below.

[0061] Step S6.1, refer to Figure 1 , Figure 4 and Figure 6 The staff rotates the transmission arm 3 through the scaffold 29, and then rotates the adjusting plate 9 through the transmission arm 3, causing the adjusting plate 9 to move upward towards the receiving cavity 10. Under the return force of the spring 19, the blocking rod 13 is pulled back into the receiving cavity 10. Finally, the squeezing plate 18 at the lower end of the blocking rod 13 squeezes the sealing bladder, sealing the blocking groove 14 through the sealing bladder. At the same time, under the action of pressurized water, additional pressure is applied to the sealing bladder, improving the sealing effect of the blocking groove 14, enhancing the sealing performance of pressurized water, and preventing pressurized water from gushing upward.

[0062] Step S7: Use water pump 4 to discharge the water in the secondary filter pipe 2 above the water blocking platform out of the well, then remove the water pump 4's pumping pipe, and finally remove the transmission arm 3 and the float arm 6.

[0063] Step S7.1: The staff actively starts the water pump 4 to pump the water out of the dewatering well pipe above the water blocking platform, then pulls the water pump 4 out of the transmission arm 3, and finally, the staff manually removes the transmission arm 3 and the float arm 6 from the dewatering well pipe for reuse.

[0064] Step S8: Pour concrete into the secondary filter pipe 2 above the water-blocking platform until the ground surface is reached, and the dewatering construction is completed.

[0065] This construction method enables dynamic water level adjustment, automating dewatering in deep foundation pits. This significantly improves the safety of groundwater level control in deep foundation pit projects, saves substantial labor costs, and ensures smooth construction of deep foundation pits. Furthermore, under the adjustment of the force transmission arm 3, the water-blocking platform can form a stable sealing structure for the dewatering well pipes, eliminating the need for grouting and reducing construction costs while guaranteeing the quality of dewatering construction in deep foundation pits.

[0066] It is understood that the above description is merely exemplary and the embodiments of this application do not limit the scope of the application.

[0067] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention shall be within the scope of protection of the pending claims of the present invention.

Claims

1. An intelligent monitoring and dewatering construction method for deep foundation pits with abundant water, characterized in that, include: Step S1: After on-site investigation, dewatering well points are reasonably distributed and marked around the deep foundation pit. Drilling equipment such as drilling rigs is used to drill holes at the marked locations to form dewatering well holes. Step S2: First, place a suitable main filter pipe in the well hole, and then place a suitable secondary filter pipe in the main filter pipe. Before placing the secondary filter pipe, set a water blocking platform in the secondary filter pipe. The water blocking platform is located in the pressurized water level. In step S2, the water-blocking platform includes a blocking plate and an adjusting plate. The blocking plate has a receiving cavity on the side facing the wellhead of the dewatering well, and the cavity wall is threaded. The lower end of the adjusting plate extends into the receiving cavity and is threadedly connected thereto, so that the adjusting plate can be rotated and slid within the receiving cavity; The lower surface of the adjusting plate is a smooth plane; The regulating plate has a water flow hole in the middle, and a rectangular screw block is provided at the upper end of the regulating plate corresponding to the water flow hole; The cavity is provided with a plug rod, and a plug groove is provided on the side of the plug plate opposite to the wellhead of the dewatering well corresponding to the plug rod; The plug rod is hollow, and the top and bottom of the plug rod are provided with water-permeable holes in the radial direction. The lower end of the plug rod is fitted with a sealing bladder, which is located outside the plug plate. The closure capsule includes: a rubber bladder and two rubber plates, wherein the rubber bladder is connected between the two rubber plates; The sealed bladder has a sleeve hole in the middle, and the lower end of the plug rod extends from the receiving cavity to the plug groove, during which the plug rod passes through the sleeve hole; A compression plate is fixed to the lower end of the plug rod; The plug rod is fitted with a spring, the upper end of the spring does not exceed the water-permeable hole at the top of the plug rod, and the lower end of the spring touches the bottom of the cavity under its own recoil. Step S3: Vertically install a force transmission arm inside the secondary filter tube, ensuring that the upper end of the force transmission arm extends outside the secondary filter tube. The force transmission arm is used to adjust the water blocking and water discharge effects of the water blocking platform. Step S4: A water pump and a drainage ditch are set up near the wellhead of the dewatering well. The pumping pipe of the water pump extends to the water blocking platform inside the secondary filter pipe, and the outlet pipe of the water pump extends into the drainage ditch. Step S5: Before installing the transmission arm, first install a float arm on the transmission arm so that the float arm slides along the axis of the transmission arm. Then, set a sensor on the edge of the deep foundation pit. When the upper end of the float arm protrudes from the wellhead of the dewatering well, it is sensed by the sensor. The sensor transmits the signal to the water pump control element in the control box. The water pump control element starts the water pump to automatically dewater. Step S6: After the deep foundation pit bottom slab is poured, the water blocking platform is adjusted by the force transmission arm so that the water blocking platform intercepts the water in the secondary filter pipe below. Step S7: The water in the secondary filter pipe above the water blocking platform is discharged out of the well by the water pump, the water pump pipe is taken out, and finally the transmission arm and the float arm are taken out. Step S8: Pour concrete into the secondary filter pipe above the water-blocking platform until the ground surface, and the dewatering construction is completed.

2. The intelligent monitoring and dewatering construction method for water-rich deep foundation pits according to claim 1, characterized in that, The force transmission arm is hollow, and the lower end of the force transmission arm is provided with a rectangular opening that matches the screw block. The bottom side wall of the force transmission arm is provided with a water outlet. The rectangular opening at the lower end of the force transmission arm is aligned with the screw block and fitted onto the adjustment plate.

3. The intelligent monitoring and dewatering construction method for water-rich deep foundation pits according to claim 2, characterized in that, A floating component is provided between the force transmission arm and the floating arm. The floating component includes a float ring, a directional sliding arm, and a rail ring. A directional channel is provided radially at the bottom of the force transmission arm. The directional channel is located above the water outlet. The float ring is sleeved on the outside of the force transmission arm.

4. The intelligent monitoring and dewatering construction method for water-rich deep foundation pits according to claim 3, characterized in that, The directional sliding arm includes a clamp and a sliding arm. The clamp is fitted outside the float. One end of the sliding arm is connected to the clamp, and the other end of the sliding arm has a directional slider protruding into the directional channel.

5. The intelligent monitoring and dewatering construction method for water-rich deep foundation pits according to claim 4, characterized in that, The track ring has a slip ring fitted inside its track, and the lower end of the floating arm is connected to the slip ring.

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