Integrated construction equipment suitable for outburst prevention of ultra-deep foundation pit

Abstract

The invention relates to integrated construction equipment suitable for outburst prevention of an ultra-deep foundation pit, and the integrated construction equipment comprises a multifunctional carrying platform which is arranged in the foundation pit in a liftable manner, and the periphery of the multifunctional carrying platform is connected with an active horizontal supporting assembly which can do telescopic motion and is used for being supported in the foundation pit when the multifunctional carrying platform stops lifting; the lifting device is used for driving the multifunctional carrying platform to do lifting motion; the underwater excavation assembly is used for carrying out foundation pit underwater excavation when the multifunctional carrying platform is lowered to be below the inrush-resistant critical elevation; and the underwater bottom sealing assembly is used for conducting underwater bottom sealing operation on the foundation pit and conducting pouring operation on a foundation pit bottom plate and the side walls located below the multifunctional carrying platform. According to the integrated construction equipment, underwater excavation and underwater bottom sealing of the foundation pit, pouring of the side wall and the internal structure of the foundation pit and other operations can be achieved at the same time, all subsequent operations can be completed by using the integrated construction equipment only after the foundation pit is excavated to the anti-inrush critical elevation and water returning of the foundation pit is conducted, and the construction efficiency is high.

Description

Technical Field

[0001] The present invention relates to the technical field of foundation pit construction, and particularly to an integrated construction equipment suitable for preventing water inrush in ultra-deep foundation pits. Background Art

[0002] Currently, open cut method is usually adopted for ultra-deep foundation pits. During open cut construction, the risk of water inrush at the bottom of the pit is usually faced. At present, two methods are usually adopted to prevent water inrush at the bottom of the pit, namely, setting partitions or installing dewatering wells. For the method of setting partitions, such as the disclosed patent (CN 110387884 A), water-stop curtains are set to cut off the confined water passage and the thickness of the overlying soil layer is increased by bottom reinforcement of the pit and other partition methods to prevent water inrush at the bottom of the pit. However, this method of setting partitions has relatively high requirements for construction quality. Once the construction quality fails to meet the standards, it will directly affect the partition effect, and thus the purpose of preventing water inrush at the bottom of the pit cannot be achieved. For the occasions where the confined layer is too thick to set partitions, the method of installing dewatering wells is usually adopted. However, dewatering wells have too much impact on the surrounding environment and are not applicable in areas with strict environmental protection requirements. Summary of the Invention

[0003] To solve the above problems, the present invention provides an integrated construction equipment suitable for preventing water inrush in ultra-deep foundation pits. Through the setting of a multi-functional loading platform, the integrated construction equipment can simultaneously realize operations such as underwater excavation of the foundation pit, underwater bottom sealing, and pouring of the side wall and the internal structure of the foundation pit. After the foundation pit is excavated to the critical anti-inrush elevation and the foundation pit is backfilled with water, the integrated construction equipment can be used to complete all subsequent operations, with high construction efficiency.

[0004] The present invention is realized through the following solutions. An integrated construction equipment suitable for preventing water inrush in ultra-deep foundation pits includes:

[0005] A multi-functional loading platform, which is disposed in the foundation pit in a liftable manner. Active horizontal support components that can move telescopically are connected to the periphery of the multi-functional loading platform for propping against the inside of the foundation pit when the multi-functional loading platform stops ascending and descending;

[0006] A lifting device for driving the multi-functional loading platform to perform ascending and descending movements. The lifting device is installed outside the foundation pit, and the lifting end of the lifting device is connected to the multi-functional loading platform;

[0007] An underwater excavation component, including an underwater excavation device and underwater excavation accessories. The underwater excavation device is used for underwater excavation of the foundation pit when the multi-functional loading platform is lowered below the critical anti-inrush elevation. The underwater excavation accessories are used for discharging the slurry generated during the excavation of the underwater excavation device to the outside of the foundation pit. The underwater excavation device is pre-actively installed at the bottom of the multi-functional loading platform, and the underwater excavation accessories are detachably connected to the underwater excavation device;

[0008] Underwater bottom sealing assembly, including an underwater bottom sealing device and underwater bottom sealing accessories. The underwater bottom sealing device is used for performing underwater bottom sealing operations on the foundation pit and pouring operations on the bottom slab of the foundation pit and the side walls below the multi-functional carrying platform. The underwater bottom sealing accessories are used to convey bottom sealing materials or pouring materials outside the foundation pit to the underwater bottom sealing device to achieve underwater bottom sealing or pouring. The underwater bottom sealing device is pre-actively installed at the bottom of the multi-functional carrying platform, and the underwater bottom sealing accessories are detachably connected to the underwater bottom sealing device.

[0009] A further improvement of the present invention lies in that: the multi-functional carrying platform includes an outer frame adapted to the inner circumference of the foundation pit and a truss platform fixed inside the outer frame and connected by a plurality of rods. A track network is arranged along part or all of the rods at the bottom of the truss platform. Both the underwater excavation device and the underwater bottom sealing device are slidably installed on the track network, and the angles and / or lengths of the underwater excavation device and the underwater bottom sealing device relative to the multi-functional carrying platform are adjustable.

[0010] A further improvement of the present invention lies in that the active horizontal support assembly includes a plurality of horizontal support members that can perform telescopic movements radially outward along the multi-functional carrying platform, and the plurality of horizontal support members are evenly spaced on the outer circumference of the multi-functional carrying platform.

[0011] A further improvement of the present invention lies in that the horizontal support member is a waterproof jack or a waterproof hydraulic cylinder.

[0012] A further improvement of the present invention lies in that: it further includes a construction operation platform for constructing the internal structure of the foundation pit, and the construction operation platform is detachably installed on the top of the multi-functional carrying platform.

[0013] A further improvement of the present invention lies in that: a retaining structure is provided in the foundation pit. The retaining structure includes a circle of retaining piles arranged along the inner circumference of the foundation pit and multiple purlins fixed at intervals along the height direction on the inner circumference of the circle of retaining piles; by adjusting the length of the active horizontal support assembly, the multi-functional carrying platform can be used as a temporary support for the retaining structure or an internal support for the retaining structure and jacked against the inside of the circle of retaining piles or inside the purlins.

[0014] A further improvement of the present invention lies in that: the underwater excavation accessories include a first transport conduit for transporting mud outwards, and the underwater bottom sealing accessories include a second transport conduit for transporting bottom sealing materials or pouring materials to the underwater bottom sealing device; a guiding structure for fixing to restrict the first transport conduit and the second transport conduit is provided on the retaining structure.

[0015] A further improvement of the present invention lies in: it further includes a remote monitoring system, which includes a monitoring unit for monitoring the internal force and deformation conditions of the multi-functional carrying platform, a lifting monitoring unit for monitoring and controlling the lifting device, a horizontal support monitoring unit for controlling and monitoring the telescopic condition of the active horizontal support assembly, an underwater excavation monitoring unit for monitoring and controlling the underwater excavation assembly, and an underwater bottom sealing monitoring unit for monitoring and controlling the underwater bottom sealing assembly.

[0016] The present invention includes but is not limited to the following beneficial effects:

[0017] Through the setting of the multi-functional carrying platform, the integrated construction equipment can simultaneously achieve operations such as underwater excavation of the foundation pit, underwater bottom sealing, and pouring of the side wall and internal structure of the foundation pit. Only need to excavate the foundation pit to the critical anti-heave elevation and carry out the backwater of the foundation pit, and then the integrated construction equipment can be used to complete all subsequent operations, with high construction efficiency.

[0018] Using this integrated construction equipment in cooperation with dry excavation and foundation pit backwater operations can effectively eliminate the risk of foundation pit heave, without the need to set up dewatering wells, and has little interference to the surrounding environment.

[0019] Through the setting of the active horizontal support assembly, the multi-functional carrying platform can be used as both a horizontal support and a horizontal replacement support at the same time, and can achieve support while excavating, effectively improving the construction speed of the foundation pit and shortening the exposure time of the foundation pit.

[0020] Through the monitoring of various mechanical and structural components by the remote monitoring system, full mechanized operation and precise control of each operation link can be realized, which can further improve the construction speed of the foundation pit and ensure the construction quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 Shows a plan view of the integrated construction equipment of the present invention.

[0022] Figure 2 Shows a construction state diagram of the underwater excavation assembly in the present invention.

[0023] Figure 3 Shows a first construction state diagram of the underwater bottom sealing assembly in the present invention.

[0024] Figure 4 Shows a second construction state diagram of the underwater bottom sealing assembly in the present invention.

[0025] Figure 5 Shows a construction state diagram of the erection of the construction operation platform in the present invention.

[0026] In the figure: 1. Foundation pit; 11. Sealing layer at the bottom; 12. Bottom slab; 13. Side wall; 2. Multifunctional carrying platform; 21. Outer frame; 22. Truss platform; 221. Passage opening; 3. Lifting device; 41. Underwater excavation device; 411. Manipulator; 412. Excavating head; 42. Accessories for underwater excavation; 51. Underwater bottom sealing device; 52. Accessories for underwater bottom sealing; 6. Construction operation platform; 7. Enclosure structure; 71. Encircling retaining piles; 72. Waling beam; 8. Active horizontal support assembly; 9. Remote monitoring system. Detailed implementation manners

[0027] In order to solve the problems that the existing methods for preventing and controlling heaving in foundation pits cannot effectively eliminate the risk of foundation pit heaving or cause relatively large disturbance to the surrounding environment, etc., the present invention provides an integrated construction equipment applicable to preventing and controlling heaving in ultra-deep foundation pits. Through the setting of the multifunctional carrying platform, the integrated construction equipment can simultaneously realize operations such as underwater excavation of the foundation pit, underwater bottom sealing, and pouring of the side wall and the internal structure of the foundation pit.

[0028] When constructing an ultra-deep foundation pit, it is only necessary to first use the dry excavation method to excavate the foundation pit to the critical elevation for preventing heaving, and then return the water in the foundation pit to the specified elevation (which can prevent heaving). After that, the integrated construction equipment can be used to complete all subsequent operations such as underwater excavation, underwater bottom sealing, and construction of the internal structure of the foundation pit after pumping out the returned water, with high construction efficiency.

[0029] The following further describes the integrated construction equipment applicable to preventing and controlling heaving in ultra-deep foundation pits with specific embodiments in conjunction with the accompanying drawings.

[0030] Refer to Figures 1 to 5As shown in the figure, an integrated construction equipment applicable to preventing water inrush in ultra-deep foundation pits includes a multi-functional loading platform 2, a lifting device 3, an underwater excavation assembly, and an underwater bottom sealing assembly. Among them: The multi-functional loading platform 2 is liftably arranged in the foundation pit 1. Active horizontal support assemblies 8 that can be telescopically moved are connected to the periphery of the multi-functional loading platform 2 for propping against the inside of the foundation pit 1 when the multi-functional loading platform 2 stops lifting. The lifting device 3 is used to drive the multi-functional loading platform 2 to perform lifting motion. The lifting device 3 is installed outside the foundation pit 1, and the lifting end of the lifting device 3 is connected to the multi-functional loading platform 2. The underwater excavation assembly includes an underwater excavation device 41 and underwater excavation accessories 42. The underwater excavation device 41 is used to perform underwater excavation of the foundation pit when the multi-functional loading platform 2 is lowered below the critical anti-inrush elevation. The underwater excavation accessories 42 are used to discharge the slurry generated during the excavation of the underwater excavation device 41 to the outside of the foundation pit 1. The underwater excavation device 41 is pre-actively installed at the bottom of the multi-functional loading platform 2, and the underwater excavation accessories 42 are detachably connected to the underwater excavation device 41. The underwater bottom sealing assembly includes an underwater bottom sealing device 51 and underwater bottom sealing accessories 52. The underwater bottom sealing device 51 is used to perform underwater bottom sealing operations on the foundation pit and to pour the bottom slab 12 of the foundation pit and the side wall 13 below the multi-functional loading platform 2. The underwater bottom sealing accessories 52 are used to convey the bottom sealing material or pouring material outside the foundation pit to the underwater bottom sealing device 51 to achieve underwater bottom sealing or pouring. The underwater bottom sealing device 51 is pre-actively installed at the bottom of the multi-functional loading platform 2, and the underwater bottom sealing accessories 52 are detachably connected to the underwater bottom sealing device 51.

[0031] Specifically, regarding the structure of the multi-functional loading platform 2, as Figure 1 shown: A retaining structure 7 is provided on the inner circumference of the foundation pit 1. The multi-functional loading platform 2 includes an outer frame 21 adapted to the inner circumference of the retaining structure 7 and a truss platform 22 fixed inside the outer frame 21 and connected by multiple rods. In order to facilitate the installation, disassembly, or maintenance of the multi-functional loading platform 2 and the underwater excavation assembly and underwater bottom sealing assembly on the multi-functional loading platform 2, a passage opening 221 is also provided in the middle of the truss platform 22. A track network (not shown in the figure) is arranged along some or all of the rods at the bottom of the truss platform 22.

[0032] Regarding the structure of the lifting device 3, it is installed on the top member of the retaining structure 7. The lifting rope of the lifting device 3 hangs into the foundation pit 1 and is connected to the multi-functional loading platform 2. The lifting motion of the multi-functional loading platform 2 is realized through the lifting device 3.

[0033] Regarding the structure of the underwater excavation assembly, as Figure 2As shown in the figure: The underwater excavation device 41 includes a robotic arm 411 installed on the track network and a digging head 412 detachably connected to the end of the robotic arm 411. The digging head 412 can be a suction head or a grab bucket according to the nature of the excavated soil layer. Installed on the track network, the robotic arm 411 can move along the track network for operation, and the angle and length of the robotic arm 411 relative to the multi-functional carrying platform 2 are adjustable to improve the underwater excavation efficiency and coverage area. The underwater excavation accessory 42 includes a first transport conduit for transporting mud outwards, a first pumping device for providing the power for outward transportation, etc. The first pumping device is connected to the first transport conduit. The first transport conduit is laid on the retaining structure 7 inside the foundation pit 1, and one end of the first transport conduit is connected to the underwater excavation device 41 and the other end extends outside the foundation pit 1. A soil collection pit can be set outside the foundation pit 1, and the other end of the first transport conduit can be directly extended into the soil collection pit.

[0034] Regarding the structure of the underwater bottom sealing assembly, as Figure 3 As shown in the figure: The underwater bottom sealing device 51 includes a plurality of telescopic conduits distributed and installed on the track network to achieve multi-point pouring, improve the pouring efficiency and coverage area. Of course, the number of telescopic conduits can also be appropriately reduced, and by setting the telescopic conduits to be able to move along the track network for operation, the coverage area can be increased. The underwater bottom sealing accessory 52 includes a second transport conduit for transporting bottom sealing material or pouring material to the underwater bottom sealing device 51, a second pumping device for providing the transport power, etc. The second pumping device is connected to the second transport conduit. The second transport conduit is laid on the retaining structure 7 inside the foundation pit 1, and one end of the second transport conduit communicates with each telescopic conduit and the other end extends outside the foundation pit 1. A pouring platform can be set outside the foundation pit 1 for placing storage equipment for providing bottom sealing material and pouring material.

[0035] In some preferred embodiments, the above-mentioned first pumping device, second pumping device, and pouring platform, etc. can be arranged on the top member of the retaining structure 7 to avoid the inward collapse of the inner wall of the foundation pit. In addition, a guiding structure for fixing to restrain the first transport conduit and the second transport conduit is also provided on the retaining structure 7 to avoid problems such as the entanglement of the first transport conduit and the second transport conduit or the influence on the lifting of the multi-functional carrying platform 2. In some preferred embodiments, the retaining structure 7 includes a circle of retaining piles 71 arranged along the inner perimeter of the foundation pit 1 and multiple purlins 72 fixed at intervals in the height direction on the inner perimeter of the circle of retaining piles 71. The main body of the circle of retaining piles 71 can adopt lattice columns. Because the inside of the lattice columns is hollow, it can be used as the guiding structure to guide and restrain the first transport conduit and the second transport conduit. That is to say, the first transport conduit and the second transport conduit can choose to pass through the lattice columns nearby.

[0036] Regarding the structure of the active horizontal support assembly 8, asFigure 1 As shown, the active horizontal support assembly 8 includes a plurality of horizontal support members that can perform telescopic movement radially outward along the multifunctional carrying platform 2, and the plurality of horizontal support members are evenly spaced on the outer periphery of the multifunctional carrying platform 2. To adapt to the underwater operation environment, the horizontal support members are selected from waterproof jacks or waterproof hydraulic cylinders. By adjusting the length of the active horizontal support assembly 8, the multifunctional carrying platform 2 can be used as a temporary support for the retaining structure during underwater excavation and jacked against the retaining piles 71 in a circle, and also as an internal support for the retaining structure and jacked against the purlin 72 to actively pressurize and control the deformation of the retaining structure, so as to reduce the deformation of the retaining structure and the impact of foundation pit excavation on the surrounding environment, and the applied force value can be adjusted according to surrounding conditions such as the depth of foundation pit excavation.

[0037] In some preferred embodiments, as Figure 5 shown: The integrated construction equipment further includes a construction operation platform 6 for constructing the internal structure of the foundation pit, and the construction operation platform 6 is detachably installed on the top of the multifunctional carrying platform 2. Since the truss platform 22 of the multifunctional carrying platform 2 is a hollow structure, and a passage opening 221 is also provided in the middle of the truss platform 22, and when constructing the internal structure of the foundation pit, it is necessary for operators to enter the site. Therefore, in this embodiment, before constructing the internal structure of the foundation pit, the construction operation platform 6 is first installed on the top of the multifunctional carrying platform 2 to prevent the risk of falling when operators are constructing the internal structure of the foundation pit, and at the same time, it is also convenient to place construction materials and tools on the construction operation platform 6. During the internal structure construction stage, the length of the active horizontal support assembly 8 can also be adjusted to make it act as a replacement support for the retaining structure and jacked against the cast side wall to ensure the smooth backfilling of the internal side wall.

[0038] In some preferred embodiments, the integrated construction equipment further includes a remote monitoring system 9, comprising a monitoring unit, a lifting monitoring unit, a horizontal support monitoring unit, an underwater excavation monitoring unit, and an underwater bottom sealing monitoring unit. The monitoring unit is used to monitor the internal forces and deformation of the multifunctional carrying platform 2. The lifting monitoring unit is used to monitor and control the lifting and lowering of the lifting device 3, specifically including lifting control, speed monitoring, aphasia alarm and self-locking, posture monitoring during the lifting and lowering of the multifunctional carrying platform 2, and monitoring of the axial force of the lifting rope. The horizontal support monitoring unit is used to cooperate with the lifting device 3 to monitor and control the active horizontal support assembly 8 throughout the integrated construction process. For active horizontal support assemblies 8 that utilize multiple hydraulic cylinders, the horizontal support monitoring unit can synchronously release and control the step-by-step operation of each cylinder, and can also control and monitor the oil pressure in real time. The underwater excavation monitoring unit is used to monitor and control the underwater excavation assembly, specifically including an underwater excavation control platform, excavation trajectory recording and monitoring, power system monitoring, mud transport monitoring, and over-excavation alarms. The underwater bottom seal monitoring unit is used to monitor and control the underwater bottom seal assembly, specifically including underwater pouring volume control, retractable conduit elevation control, and overfilling alarms. Preferably, the remote monitoring system 9 also includes a retaining wall monitoring unit, which monitors the horizontal deformation of the retaining wall 7 and the water level within the foundation pit 1. By monitoring various mechanical and structural components through the remote monitoring system 9, fully mechanized operations and precise control of each operational link are achieved, further improving the speed of foundation pit construction and ensuring construction quality.

[0039] See also Figures 2 to 5 As shown, the steps of using the above-mentioned integrated construction equipment to construct an ultra-deep foundation pit include:

[0040] Step S1: excavate a foundation pit 1 to the critical elevation H1 for resisting sudden surge by using a dry excavation method.

[0041] Step S2: Install and debug the integrated construction equipment, and use the lifting device 3 to lower the multifunctional carrying platform 2 to the bottom of the foundation pit 1.

[0042] Step S3: Backfill the foundation pit to a specified elevation H2. The specified elevation H2 should be sufficient to prevent sudden surges during continued wet excavation (i.e., underwater excavation).

[0043] Step S4: Use the underwater excavation assembly to conduct underwater excavation of the foundation pit. Specifically, use the underwater excavation device 41 to conduct underwater excavation of the foundation pit, and use the underwater excavation accessory 42 to transport the excavated mud to the ground soil collection pit arranged outside the foundation pit 1. As the underwater excavation depth increases, use the lifting device 3 to gradually lower the multi-functional loading platform 2 layer by layer. When the multi-functional loading platform 2 stops descending, extend the active horizontal support assembly 8 so that the multi-functional loading platform 2 serves as a temporary support for the retaining structure or an internal support for the retaining structure and is propped inside the retaining structure 7, so that the bottom of the foundation pit always remains within the excavation height of the underwater excavation device 41 until the foundation pit 1 is excavated to the specified bottom sealing elevation H3.

[0044] Step S5: Use the underwater bottom sealing assembly to conduct bottom sealing operation on the foundation pit 1 and form a bottom sealing layer 11. Specifically, use the underwater bottom sealing device 51 to conduct bottom sealing operation on the foundation pit, and during the bottom sealing operation, use the underwater bottom sealing accessory 52 to transport the bottom sealing material outside the foundation pit 1 to the underwater bottom sealing device 51, as Figure 3 shown.

[0045] Step S6: After the bottom sealing layer 11 reaches the design strength, pump out the return water in the foundation pit, and then use the underwater bottom sealing device 51 and the underwater bottom sealing accessory 52 to pour the bottom plate 12 and the side wall 13 located below the multi-functional loading platform 2. Similarly, during the pouring process, use the underwater bottom sealing accessory 52 to transport the pouring material outside the foundation pit 1 to the underwater bottom sealing device 51, as Figure 4 shown.

[0046] Step S7: Demolish the underwater excavation assembly and the underwater bottom sealing assembly, and install a construction operation platform 6 on the multi-functional loading platform 2. Use the construction operation platform 6 to construct the remaining side walls and the internal structure of the foundation pit. As the construction height changes, use the lifting device 3 to gradually lift the multi-functional loading platform 2 layer by layer. When the multi-functional loading platform 2 stops ascending, extend the active horizontal support assembly 8 so that the multi-functional loading platform 2 serves as a replacement support for the retaining structure and is propped inside the already poured side wall until the construction of the internal structure of the foundation pit is completed, as Figure 5 shown.

[0047] Through the setting of the multi-functional carrying platform 2, the integrated construction equipment can simultaneously perform operations such as underwater excavation of the foundation pit, underwater bottom sealing, and pouring of the side wall and the internal structure of the foundation pit. After only excavating the foundation pit to the critical anti-heave elevation and filling the foundation pit with water, the integrated construction equipment can be used to complete all subsequent operations, with high construction efficiency. Moreover, the risk of foundation pit heave can be effectively eliminated, there is no need to set up dewatering wells, and the interference to the surrounding environment is small. Through the setting of the active horizontal support component 8, the multi-functional carrying platform 2 can be used as both a horizontal support and a horizontal strut replacement, enabling support to be carried out simultaneously with excavation, effectively improving the construction speed of the foundation pit and reducing the exposure time of the foundation pit. Through the monitoring of various mechanical and structural components by the remote monitoring system 9, fully mechanized operation throughout the process and precise control of each operation link can be achieved, further improving the construction speed of the foundation pit and ensuring the construction quality.

[0048] The present invention has been described in detail with reference to the embodiments in conjunction with the accompanying drawings, and those of ordinary skill in the art can make various variations of the present invention according to the above description. Therefore, certain details in the embodiments should not constitute a limitation to the present invention, and the protection scope of the present invention will be defined by the scope of the appended claims.

Claims

1. An integrated construction equipment applicable to preventing gushing in ultra-deep foundation pits, characterized in that, Including: A multi-functional carrying platform, which is arranged in the foundation pit in a liftable manner. Active horizontal support components that can move telescopically are connected to the periphery of the multi-functional carrying platform and are used to brace against the inside of the foundation pit when the multi-functional carrying platform stops ascending and descending. A lifting device, which is used to drive the multi-functional carrying platform to perform ascending and descending movements. The lifting device is installed outside the foundation pit, and the lifting end of the lifting device is connected to the multi-functional carrying platform. An underwater excavation component, including an underwater excavation device and underwater excavation accessories. The underwater excavation device is used to perform underwater excavation of the foundation pit when the multi-functional carrying platform is lowered below the critical anti-heave elevation. The underwater excavation accessories are used to discharge the slurry generated during the excavation of the underwater excavation device to the outside of the foundation pit. The underwater excavation device is pre-actively installed at the bottom of the multi-functional carrying platform, and the underwater excavation accessories are detachably connected to the underwater excavation device. An underwater bottom-sealing component, including an underwater bottom-sealing device and underwater bottom-sealing accessories. The underwater bottom-sealing device is used to perform underwater bottom-sealing operations on the foundation pit and to pour the bottom slab of the foundation pit and the side walls below the multi-functional carrying platform. The underwater bottom-sealing accessories are used to convey the bottom-sealing material or pouring material outside the foundation pit to the underwater bottom-sealing device to achieve underwater bottom-sealing or pouring. The underwater bottom-sealing device is pre-actively installed at the bottom of the multi-functional carrying platform, and the underwater bottom-sealing accessories are detachably connected to the underwater bottom-sealing device.

2. The integrated construction equipment applicable to preventing upwelling in ultra-deep foundation pits according to claim 1, characterized in that: The multi-functional carrying platform includes an outer frame adapted to the inner circumference of the foundation pit and a truss platform fixed inside the outer frame and connected by multiple rods. A track network is arranged along some or all of the rods at the bottom of the truss platform. Both the underwater excavation device and the underwater bottom-sealing device are slidably installed on the track network, and the angles and / or lengths of the underwater excavation device and the underwater bottom-sealing device relative to the multi-functional carrying platform are adjustable.

3. The integrated construction equipment applicable to anti-heave in ultra-deep foundation pits as claimed in claim 1, wherein The active horizontal support component includes multiple horizontal support members that can perform telescopic movement radially outward along the multi-functional carrying platform, and the multiple horizontal support members are evenly spaced on the outer periphery of the multi-functional carrying platform.

4. The integrated construction equipment applicable to preventing upwelling in ultra-deep foundation pits as described in claim 3, wherein The horizontal support member is a waterproof jack or a waterproof hydraulic cylinder.

5. The integrated construction equipment applicable to preventing upwelling in ultra-deep foundation pits as claimed in claim 1, wherein: It also includes a construction operation platform for constructing the internal structure of the foundation pit. The construction operation platform is detachably installed on the top of the multi-functional carrying platform.

6. The integrated construction equipment applicable to preventing gushing in ultra-deep foundation pits according to claim 1, characterized in that: A retaining structure is provided inside the foundation pit. The retaining structure includes a circle of retaining piles arranged along the inner circumference of the foundation pit and multiple horizontal braces fixed at intervals along the height direction on the inner circumference of the circle of retaining piles. By adjusting the length of the active horizontal support component, the multi-functional carrying platform can be used as a temporary retaining support or an internal retaining support to brace inside the circle of retaining piles or inside the horizontal braces.

7. The integrated construction equipment applicable to preventing water inrush in ultra-deep foundation pits according to claim 6, wherein: The underwater excavation accessories include a first transport conduit for transporting slurry outward. The underwater bottom-sealing accessories include a second transport conduit for transporting the bottom-sealing material or pouring material to the underwater bottom-sealing device. A guiding structure for fixing to restrain the first transport conduit and the second transport conduit is provided on the retaining structure.

8. The integrated construction equipment applicable to preventing upwelling in ultra-deep foundation pits as described in claim 1, wherein: It further includes a remote monitoring system, which includes a monitoring unit for monitoring the internal force and deformation conditions of the multi-functional carrying platform, a lifting monitoring unit for monitoring and controlling the lifting device, a horizontal support monitoring unit for cooperating with the lifting device to monitor and control the active horizontal support assembly, an underwater excavation monitoring unit for monitoring and controlling the underwater excavation assembly, and an underwater bottom sealing monitoring unit for monitoring and controlling the underwater bottom sealing assembly.

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