Sponge city underground engineering construction rainwater treatment device and construction method

Abstract

This invention discloses a rainwater treatment device and construction method for underground engineering construction in sponge cities. The device includes a water collection box, a flow guiding component, and a filter well. The water collection box is evenly distributed at the bottom of the underground passage. The flow guiding component includes a first flow guiding hole and a second flow guiding hole, both located within the underground passage and connected to the water collection box. The water collection box is connected to the filter well via a first water conveyance component. The filter wells are distributed along both sides of the bottom of the underground passage, with two filter wells on the same side connected by a second water conveyance component. The method includes: underground passage reinforcement, construction of the first water conveyance component, construction of the filter well, and construction of the second water conveyance component. This invention not only achieves seepage prevention, water collection, filtration, and water delivery in underground engineering projects, but also overcomes the drawbacks of underground waterproofing projects, such as overall failure or leakage at local joints. It is beneficial for rainwater collection and utilization and enhances the durability of underground engineering projects.

Description

Technical Field

[0001] This invention relates to rainwater treatment devices and construction methods for underground engineering projects in sponge cities. Background Technology

[0002] Modern sponge cities have a high water collection and drainage efficiency, which can collect urban water while reducing the occurrence of floods.

[0003] In areas below the water level, such as subways, underground pipelines, tunnels, underground utility tunnels, underground parking garages, and underground air-raid shelters, drainage is often poor. In the event of severe weather such as heavy rain, water can easily accumulate in underground passages, threatening people's lives and property. At the same time, it can also cause the entire underground waterproofing project to fail or leak at local joints. Summary of the Invention

[0004] The purpose of this invention is to provide a technical solution for rainwater treatment devices and construction methods for underground engineering construction in sponge cities, addressing the shortcomings of existing technologies. This solution not only achieves seepage prevention, water collection, filtration, and transportation in underground engineering projects, but also overcomes the drawbacks of overall failure or leakage at local joints in underground waterproofing projects. It facilitates rainwater collection and utilization, enhances the durability of underground engineering projects, and features a simple construction method. This method not only improves the construction efficiency of rainwater treatment devices but also overcomes the drawbacks of overall failure or leakage at local joints in underground waterproofing projects.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A rainwater treatment device for underground engineering construction in sponge cities is distributed along underground channels. The device comprises a collection box, a flow guiding component, and a filter well. The collection box is evenly distributed at the bottom of the underground channel. The flow guiding component includes a first flow guiding hole and a second flow guiding hole, both located within the underground channel and connected to the collection box. The collection box is connected to the filter well via a first water conveyance component. The filter wells are distributed along both sides of the bottom of the underground channel, with two filter wells on the same side connected by a second water conveyance component. This design not only achieves seepage prevention, water collection, filtration, and water delivery for underground engineering projects but also overcomes the drawbacks of underground waterproofing projects, such as overall failure or leakage at local joints. It facilitates rainwater collection and utilization, enhances the durability of underground engineering projects, and allows water in the underground channel to enter the collection box through the first and second flow guiding holes, then be fed into the filter well via the first water conveyance component. After filtration, the water is output through the second water conveyance component, effectively ensuring the safety of the underground channel.

[0007] Furthermore, the underground passage is formed by a base slab, a top slab, and side slabs that create a hollow structure. The base slab, top slab, and side slabs are all composed of a water-based non-curing coating layer, a reinforcing layer, and a sand-based microsphere breathable and seepage-proof composite layer. The water-based non-curing coating layer is located inside the sand-based microsphere breathable and seepage-proof composite layer, while the reinforcing layer is located outside the sand-based microsphere breathable and seepage-proof composite layer. The water-based non-curing coating layers on the base slab, top slab, and side slabs form an integrated, seamless, fully enclosed structure, which not only improves the stability of the underground passage structure but also has a good seepage-proof effect.

[0008] Furthermore, a reinforcement mechanism and a protective layer are provided on the outside of the underground passage. The protective layer is located outside the reinforcement mechanism. The reinforcement mechanism includes main reinforcing beams, a first reinforcing rib, a second reinforcing rib, and a support plate. The main reinforcing beams are distributed circumferentially along the underground passage. The first reinforcing ribs are evenly distributed between the two upper main reinforcing beams and between the two lower main reinforcing beams. The second reinforcing ribs are evenly distributed between the upper and lower main reinforcing beams on both sides. The support plate is attached to the outside of the side plate. The second reinforcing rib is fixedly connected to the support plate by fasteners. The design of the reinforcement mechanism can improve the overall stability of the underground passage, prevent collapse caused by water accumulation in the underground passage, and improve safety. The protective layer can protect the reinforcement mechanism.

[0009] Furthermore, the inner side of the side plate is provided with at least three layers of first diversion holes from bottom to top, and the distance between the upper and lower first diversion holes gradually increases from bottom to top. Through the design of first diversion holes at different heights, the drainage requirements of different water depths in the underground passage can be met, thus extending the service life of the underground passage.

[0010] Furthermore, a flow guide channel is provided between the side plate and the bottom plate, and a second flow guide hole is provided on the inner wall of the flow guide channel. A first filter screen is provided at the opening of the flow guide channel. The water accumulated at the bottom of the underground passage can be drained through the flow guide channel and the second flow guide hole. The first filter screen plays a filtering role to prevent the second flow guide hole from being blocked.

[0011] Furthermore, the first water conveying component includes a first water conveying pipe, a first branch pipe, and a diversion pipe. The first water conveying pipe is located directly below the underground passage and is installed along the length of the underground passage. The first water conveying pipe is connected to a water collection box through the diversion pipe, and the first water conveying pipe is connected to a filter well cylinder through the first branch pipe. Water in the water collection box can enter the first water conveying pipe through the diversion pipe and be collected, and can be distributed to each filter well cylinder through the first branch pipe, thus meeting the requirements for rainwater collection, filtration, and treatment.

[0012] Furthermore, the filter well includes a cylinder, a cover plate, a second filter screen, and a stirring and speed-increasing mechanism. The cover plate is located at the top of the cylinder, and the cylinder has an inlet and an outlet on its two sides. The second filter screen is located inside the cylinder, near the inlet. The stirring and speed-increasing mechanism is located inside the cylinder and passes through the second filter screen. A wedge plate is located at the bottom of the cylinder. Water from the first diversion pipe can be input into the cylinder through the inlet, filtered by the second filter screen, and then output through the outlet. The cover plate is detachably connected to the cylinder to facilitate cleaning of impurities from the second filter screen. The stirring and speed-increasing mechanism can stir the water and accelerate its flow.

[0013] Furthermore, the stirring and speed-up mechanism includes a housing, a stirring assembly, a transmission rod, a speed-up component, and a motor. The housing is connected to the cylinder via a fixing plate and has a through hole. The stirring assembly and the speed-up component are located on the upper and lower sides of the transmission rod, which passes through the through hole. The motor is located on the cylinder and is connected to the housing via a rotating shaft. The rotating shaft is connected to the transmission rod via a gear set. The stirring assembly includes stirring blades evenly distributed in a ring. The stirring blades include main blades and auxiliary blades, with the main blades being larger than the auxiliary blades. The speed-up component includes a retaining ring and speed-up blades. The speed-up blades are evenly distributed in a ring at the bottom of the transmission rod, and the retaining ring is located at the top of the speed-up blades. The motor drives the rotating shaft to rotate, which in turn drives the transmission rod to rotate via the gear set, achieving synchronous rotation of the stirring assembly and the speed-up component and improving water conveying efficiency.

[0014] Furthermore, the second water supply component includes a second water supply pipe and a second diversion pipe. The second water supply pipe is located on one side of the filter well cylinder and is distributed along the length of the underground channel. The filter well cylinder is connected to the second water supply pipe through the second diversion pipe, and the second diversion pipe can collect the water in the filter well cylinder and discharge it through the second water supply pipe.

[0015] The construction method for rainwater treatment devices used in underground sponge city projects, as described above, is characterized by including the following steps:

[0016] 1) Reinforcement of underground passages

[0017] a. First, the first guide holes are symmetrically opened along the inner walls of both sides of the underground passage. The first guide holes in the lower row are close to the bottom of the side plate. The distance between the first guide holes in the middle row and the first guide holes at the bottom is 20-30mm. The distance between the first guide holes in the upper row and the first guide holes in the middle row is 50-60mm.

[0018] b. Then, a guide channel is opened between the side plate and the bottom plate, and a second guide hole is opened along the side wall of the guide channel. The first guide hole is connected to the second guide hole, and a first filter screen is installed at the opening of the guide channel.

[0019] c. Next, determine the dimensions of the reinforcement mechanism based on the dimensions of the underground passage, and process the main reinforcement beams, the first reinforcing rib, the second reinforcing rib, and the support plate according to the design requirements. Distribute the main reinforcement beams around the perimeter of the underground passage, and weld the first reinforcing rib evenly between the two main reinforcement beams located above and between the two main reinforcement beams located below. Weld the second reinforcing rib evenly between the upper and lower main reinforcement beams on both sides. At the same time, attach the support plate to the outside of the side plate and fix the second reinforcing rib to the support plate with fasteners.

[0020] 2) Construction of the first water conveyance component

[0021] a. First, determine the size of the water collection box based on the width of the bottom plate of the underground passage, and arrange the water collection boxes at equal intervals along the bottom of the bottom plate so that the first and second diversion holes are connected to the water collection box.

[0022] b. Then, install the guide pipe vertically along the bottom of each water collection box, select the first water supply pipe, lay the first water supply pipe horizontally along the bottom of the underground passage, and connect the guide pipe to the first water supply pipe.

[0023] c. Next, select a suitable first diversion pipe according to the distribution location of the filter well, connect one end of the first diversion pipe to the first water supply pipe, and seal the other end with a plug.

[0024] d. Finally, install a solenoid valve on each of the first branch pipes;

[0025] 3) Filter well construction

[0026] a. First, make a suitable cylinder according to the distribution of the filter well. Open water inlet and water outlet holes on the left and right sides of the cylinder respectively, so that the water inlet hole is above the water outlet hole. Install wedge plates along the bottom inner side of the cylinder, and do not install wedge plates on the side closer to the water outlet hole.

[0027] b. Then, horizontally install the second filter screen inside the cylinder, so that the second filter screen is located on the side close to the water inlet. Open the plug and connect each of the first diversion pipes to the water inlet on each filter cylinder.

[0028] c. Next, according to the size of the cylinder, make a suitable stirring component, speed-increasing component and box. Make a guide hole in the vertical direction on the box. At the same time, install the stirring component and speed-increasing component on the upper and lower ends of the transmission rod respectively, so that the transmission rod passes through the guide hole. Then select a suitable motor, install the motor on the outside of the cylinder, and connect the rotating shaft to the motor. Connect the rotating shaft to the transmission rod through the gear set.

[0029] d. Finally, install the box body into the cylinder using the fixing plate, and position the stirring assembly above the second filter screen;

[0030] 4) Construction of the second water conveyance component

[0031] a. First, according to the design requirements, a suitable second water supply pipe and a second diversion pipe are made, and the second water supply pipe is laid horizontally along the outside of the filter well.

[0032] b. Then connect each filter well to the second water supply pipe through the second diversion pipe, and install a solenoid valve on the second diversion pipe;

[0033] c. Next, connect the motor and solenoid valve to the external control system.

[0034] This construction method is simple and not only improves the construction efficiency of rainwater treatment devices, but also enables underground engineering to prevent seepage, collect, filter and transport water, overcoming the drawbacks of underground waterproofing projects that are prone to overall failure or leakage at local joints.

[0035] The present invention, by adopting the above-described technical solution, has the following beneficial effects:

[0036] 1. This invention can not only achieve seepage prevention, water collection, filtration and transportation in underground engineering, but also overcome the shortcomings of underground waterproofing projects that are prone to overall failure or leakage at local joints. It is conducive to the collection and utilization of rainwater, enhances the durability of underground engineering, and allows water in the underground passage to enter the water collection box through the first and second guide holes, and then enter the filter well through the first water conveying component. After filtration, the water is output through the second water conveying component, effectively ensuring the safety of the underground passage.

[0037] 2. The design of the reinforcement mechanism can improve the overall stability of the underground passage, prevent collapse caused by water accumulation in the underground passage, and improve safety. The protective layer can protect the reinforcement mechanism.

[0038] 3. Water from the first diversion pipe can be input into the cylinder through the water inlet, filtered through the second filter screen, and then output through the water outlet. The cover plate is detachably connected to the cylinder to facilitate cleaning of impurities from the second filter screen. The stirring and speed-up mechanism can stir the water and accelerate its flow.

[0039] 4. This construction method has simple steps, which not only improves the construction efficiency of rainwater treatment devices, but also enables underground engineering to prevent leakage, collect and filter water, and transport water, overcoming the drawbacks of underground waterproofing projects that are prone to overall failure or leakage at local joints. Attached image description:

[0040] The present invention will be further described below with reference to the accompanying drawings:

[0041] Figure 1 This is a rendering of the rainwater treatment device used in the rainwater treatment device and construction method for sponge city underground engineering construction of the present invention.

[0042] Figure 2 This is a rendering showing the effect after the protective layer of the present invention has been removed;

[0043] Figure 3 for Figure 2 Rendering of direction A in the middle;

[0044] Figure 4 for Figure 2 A magnified view of a section at point I;

[0045] Figure 5 This is a schematic diagram of the structure of the top plate, bottom plate, and side plate in this invention;

[0046] Figure 6 This is a schematic diagram of the filter well casing in this invention;

[0047] Figure 7 This is a schematic diagram of the stirring speed-increasing mechanism in this invention.

[0048] In the diagram: 1-Protective layer; 2-Underground passage; 3-Filter well; 4-First water supply pipe; 5-First branch pipe; 6-Second water supply pipe; 7-Second branch pipe; 8-Cover plate; 9-Top plate; 10-Bottom plate; 11-Side plate; 12-First guide hole; 13-Guide pipe; 14-Main reinforcing beam; 15-First reinforcing rib; 16-Second reinforcing rib; 17-Support plate; 18-Fixing component; 19-Water collection box; 20-Guide channel; 21-First filter screen; 22-Second guide hole; 23-Water-based non-curing coating layer; 24-Sand-based microsphere breathable and seepage-proof composite layer; 25-Cylinder body; 26-Water inlet hole; 27-Water outlet hole; 28-Second filter screen; 29-Agitator and speed-up mechanism; 30-Box body; 31-Fixing plate; 32-Guide hole; 33-Agitator assembly; 34-Transmission rod; 35-Speed-up assembly; 36-Motor; 37-Rotating shaft; 38-Main blade; 39-Auxiliary blade; 40-Baffle ring; 41-Speed-up blade; 42-Reinforcing layer; 43-Wedge plate. Detailed Implementation

[0049] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0050] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0051] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0052] like Figures 1 to 7 As shown, this invention provides a rainwater treatment device for underground engineering construction in sponge cities. The rainwater treatment device is distributed along the underground passage 2. The underground passage 2 is formed by a base plate 10, a top plate 9, and a side plate 11, creating a hollow structure. The base plate 10, top plate 9, and side plate 11 are all composed of a water-based non-curing coating layer 23, a reinforcing layer 42, and a sand-based microsphere breathable and seepage-proof composite layer 24. The water-based non-curing coating layer 23 is located inside the sand-based microsphere breathable and seepage-proof composite layer 24, and the reinforcing layer 42 is located outside the sand-based microsphere breathable and seepage-proof composite layer 24. The water-based non-curing coating layer 23 on the base plate 10, top plate 9, and side plate 11 forms an integrated, seamless, fully enclosed structure, which not only improves the stability of the underground passage 2 structure but also has a good seepage-proof effect.

[0053] The outer side of the underground passage 2 is equipped with a reinforcement mechanism and a protective layer 1. The protective layer 1 is located outside the reinforcement mechanism. The reinforcement mechanism includes a main reinforcing beam 14, a first reinforcing rib 15, a second reinforcing rib 16, and a support plate 17. The main reinforcing beam 14 is distributed around the perimeter of the underground passage 2. The first reinforcing rib 15 is evenly distributed between the two upper main reinforcing beams 14 and between the two lower main reinforcing beams 14. The second reinforcing rib 16 is evenly distributed between the upper and lower main reinforcing beams 14 on both sides. The support plate 17 is attached to the outer side of the side plate 11. The second reinforcing rib 16 is fixedly connected to the support plate 17 by a fastener 18. The design of the reinforcement mechanism can improve the overall stability of the underground passage 2, prevent collapse caused by water accumulation in the underground passage 2, and improve safety. The protective layer 1 can protect the reinforcement mechanism.

[0054] The rainwater treatment device includes a water collection box 19, a flow guiding component, and a filter well 3. The water collection box 19 is evenly distributed at the bottom of the underground passage 2. The flow guiding component includes a first flow guiding hole 12 and a second flow guiding hole 22. Both the first flow guiding hole 12 and the second flow guiding hole 22 are located in the underground passage 2 and are connected to the water collection box 19. The inner side of the side plate 11 is provided with at least three layers of first flow guiding holes 12 from bottom to top, and the distance between the upper and lower first flow guiding holes 12 gradually increases from bottom to top. Through the design of first flow guiding holes 12 at different heights, the drainage requirements of different water accumulation depths in the underground passage 2 can be met, thus extending the service life of the underground passage 2. A flow channel 20 is provided between the side plate 11 and the bottom plate 10. A second flow hole 22 is provided on the inner wall of the flow channel 20. A first filter screen 21 is provided at the opening of the flow channel 20. The water accumulated at the bottom of the underground passage 2 can be drained through the flow channel 20 and the second flow hole 22. The first filter screen 21 plays a filtering role to prevent the second flow hole 22 from being blocked.

[0055] The water collection box 19 is connected to the filter well cylinder 3 through the first water conveying assembly. The first water conveying assembly includes a first water conveying pipe 4, a first diversion pipe 5, and a guide pipe 13. The first water conveying pipe 4 is located directly below the underground passage 2 and is set along the length of the underground passage 2. The first water conveying pipe 4 is connected to the water collection box 19 through the guide pipe 13 and to the filter well cylinder 3 through the first diversion pipe 5. The water in the water collection box 19 can enter the first water conveying pipe 4 through the guide pipe 13 and be collected. It can also be diverted to each filter well cylinder 3 through the first diversion pipe 5, thus meeting the requirements for rainwater collection and filtration treatment.

[0056] The filter well cylinder 3 is distributed along both sides of the bottom of the underground passage 2. The filter well cylinder 3 includes a cylinder body 25, a cover plate 8, a second filter screen 28, and a stirring and speed-increasing mechanism 29. The cover plate 8 is located on the top of the cylinder body 25. The cylinder body 25 has an inlet hole 26 and an outlet hole 27 on its two sides, respectively. The second filter screen 28 is located inside the cylinder body 25, on the side closer to the inlet hole 26. The stirring and speed-increasing mechanism 29 is located inside the cylinder body 25 and passes through the second filter screen 28. The bottom of the cylinder body 25 is provided with a wedge plate 43. Water from the first diversion pipe 5 can be input into the cylinder body 25 through the inlet hole 26, filtered by the second filter screen 28, and then output through the outlet hole 27. The cover plate 8 is detachably connected to the cylinder body 25 to facilitate the cleaning of impurities from the second filter screen 28. The stirring and speed-increasing mechanism 29 can stir the water and accelerate the flow of water.

[0057] The stirring and speed-up mechanism 29 includes a housing 30, a stirring assembly 33, a transmission rod 34, a speed-up assembly 35, and a motor 36. The housing 30 is connected to the cylinder 25 via a fixing plate 31. The housing 30 has a through hole 32. The stirring assembly 33 and the speed-up assembly 35 are located on the upper and lower sides of the transmission rod 34, which passes through the through hole 32. The motor 36 is located on the cylinder 25 and is connected to the housing 30 via a rotating shaft 37. The rotating shaft 37 is connected to the transmission rod 34 via a gear set. The stirring assembly 33 includes a ring-shaped... The stirring blades are evenly distributed, including main blades 38 and auxiliary blades 39. The size of the main blades 38 is larger than that of the auxiliary blades 39. The speed-increasing component 35 includes a retaining ring 40 and speed-increasing blades 41. The speed-increasing blades 41 are evenly distributed in a ring at the bottom of the transmission rod 34, and the retaining ring 40 is located at the top of the speed-increasing blades 41. The motor 36 drives the rotating shaft 37 to rotate, which in turn drives the transmission rod 34 to rotate through the gear set, so as to realize the synchronous rotation of the stirring component 33 and the speed-increasing component 35 and improve the water conveying efficiency.

[0058] Two filter wells 3 on the same side are connected by a second water conveyance assembly, which includes a second water conveyance pipe 6 and a second diversion pipe 7. The second water conveyance pipe 6 is located on one side of the filter well 3 and is distributed along the length of the underground passage 2. The filter well 3 is connected to the second water conveyance pipe 6 through the second diversion pipe 7, which can collect water in the filter well 3 and discharge it through the second water conveyance pipe 6. Through the design of the above structure, not only can the underground project be made leak-proof, collect and filter water, and transport water, but it can also overcome the disadvantages of underground waterproofing projects that are prone to overall failure or leakage at local joints. It is conducive to the collection and utilization of rainwater and enhances the durability of underground projects. Water in the underground passage 2 can enter the water collection box 19 through the first guide hole 12 and the second guide hole 22, and then enter the filter well 3 through the first water conveyance assembly. After filtration, it is discharged through the second water conveyance assembly, effectively ensuring the safety of the underground passage 2.

[0059] The construction method for rainwater treatment devices used in underground sponge city projects, as described above, includes the following steps:

[0060] 1) Reinforcement of Underground Passage 2

[0061] a. First, first guide holes 12 are symmetrically opened on both sides of the inner wall of the underground passage 2. The first guide holes 12 in the lower row are close to the bottom of the side plate 11. The distance between the first guide holes 12 in the middle row and the first guide holes 12 at the bottom is 20-30mm. The distance between the first guide holes 12 in the upper row and the first guide holes 12 in the middle row is 50-60mm.

[0062] b. Then, a guide groove 20 is opened between the side plate 11 and the bottom plate 10, and a second guide hole 22 is opened along the side wall of the guide groove 20. The first guide hole 12 is connected to the second guide hole 22, and a first filter screen 21 is installed at the opening of the guide groove 20.

[0063] c. Next, determine the dimensions of the reinforcement mechanism according to the dimensions of the underground passage 2, and process the main reinforcement beam 14, the first reinforcing rib 15, the second reinforcing rib 16 and the support plate 17 according to the design requirements. Distribute the main reinforcement beam 14 around the circumference of the underground passage 2. Weld the first reinforcing rib 15 evenly between the two main reinforcement beams 14 located above and between the two main reinforcement beams 14 located below. Weld the second reinforcing rib 16 evenly between the upper and lower main reinforcement beams 14 on both sides. At the same time, attach the support plate 17 to the outside of the side plate 11. Fix the second reinforcing rib 16 to the support plate 17 through the fastener 18.

[0064] 2) Construction of the first water conveyance component

[0065] a. First, determine the size of the water collection box 19 according to the width of the bottom plate 10 of the underground passage 2. Arrange the water collection box 19 at equal intervals along the bottom of the bottom plate 10 so that the first guide hole 12 and the second guide hole 22 are both connected to the water collection box 19.

[0066] b. Then, vertically install the guide pipe 13 along the bottom of each water collection box 19, select the first water supply pipe 4, lay the first water supply pipe 4 horizontally along the bottom of the underground passage 2, and connect the guide pipe 13 to the first water supply pipe 4.

[0067] c. Next, select a suitable first diversion pipe 5 according to the distribution position of the filter well 3, connect one end of the first diversion pipe 5 to the first water supply pipe 4, and seal the other end with a plug.

[0068] d. Finally, install a solenoid valve on each of the first branch pipes 5;

[0069] 3) Construction of filter wellbore 3

[0070] a. First, make a suitable cylinder 25 according to the distribution position of the filter well cylinder 3. Open water inlet hole 26 and water outlet hole 27 on the left and right sides of the cylinder 25 respectively, so that the water inlet hole 26 is above the water outlet hole 27. Install wedge plate 43 along the bottom of the inner side of the cylinder 25. Do not install wedge plate 43 on the side close to the water outlet hole 27.

[0071] b. Then, horizontally install the second filter screen 28 inside the cylinder 25, so that the second filter screen 28 is located on the side close to the water inlet hole 26. Open the plug and connect each of the first diversion pipes 5 to the water inlet hole 26 on each filter cylinder 3 respectively.

[0072] c. Next, according to the size of the cylinder 25, make a suitable stirring component 33, speed-increasing component 35 and box 30. Make a guide hole 32 in the vertical direction on the box 30. At the same time, install the stirring component 33 and speed-increasing component 35 on the upper and lower ends of the transmission rod 34 respectively, so that the transmission rod 34 passes through the guide hole 32. Then select a suitable motor 36 and install the motor 36 on the outside of the cylinder 25. At the same time, connect the rotating shaft 37 to the motor 36 and connect the rotating shaft 37 to the transmission rod 34 through the gear set.

[0073] d. Finally, install the box body 30 into the cylinder 25 through the fixing plate 31, and position the stirring assembly 33 above the second filter screen 28;

[0074] 4) Construction of the second water conveyance component

[0075] a. First, according to the design requirements, a suitable second water supply pipe 6 and second diversion pipe 7 are made, and the second water supply pipe 6 is laid horizontally along the outside of the filter well cylinder 3.

[0076] b. Then connect each filter well 3 to the second water supply pipe 6 through the second diversion pipe 7, and install a solenoid valve on the second diversion pipe 7;

[0077] c. Next, connect motor 36 and solenoid valve to an external control system.

[0078] This construction method is simple and not only improves the construction efficiency of rainwater treatment devices, but also enables underground engineering to prevent seepage, collect, filter and transport water, overcoming the drawbacks of underground waterproofing projects that are prone to overall failure or leakage at local joints.

[0079] The above are merely specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent substitutions, or modifications made based on the present invention to achieve substantially the same technical effect are all covered within the protection scope of the present invention.

Claims

1. A rainwater treatment device for underground engineering construction in sponge cities, wherein the rainwater treatment device is distributed along underground passages, characterized in that: The rainwater treatment device includes a water collection box, a flow guiding component, and a filter well. The water collection box is evenly distributed at the bottom of the underground channel. The flow guiding component includes a first flow guiding hole and a second flow guiding hole, both of which are located in the underground channel and communicate with the water collection box. The water collection box is connected to the filter well through a first water conveying component. The filter wells are distributed along both sides of the bottom of the underground channel, and two filter wells on the same side are connected by a second water conveying component. The underground channel is formed by a bottom plate, a top plate, and side plates forming a hollow structure. The bottom plate, the top plate, and the side plates are all composed of a water-based non-curing coating layer, a reinforcing layer, and a sand-based microsphere breathable and seepage-proof composite layer. The water-based non-curing coating layer is located inside the sand-based microsphere breathable and seepage-proof composite layer, and the reinforcing layer is located outside the sand-based microsphere breathable and seepage-proof composite layer. The water-based non-curing coating layers on the bottom plate, the top plate, and the side plates form an integrated, seamless, fully enclosed structure.

2. The rainwater treatment device for underground sponge city construction according to claim 1, characterized in that: The underground passage is equipped with a reinforcement mechanism and a protective layer on its outer side. The protective layer is located outside the reinforcement mechanism. The reinforcement mechanism includes a main reinforcing beam, a first reinforcing rib, a second reinforcing rib, and a support plate. The main reinforcing beam is distributed circumferentially along the underground passage. The first reinforcing rib is evenly distributed between the two upper main reinforcing beams and between the two lower main reinforcing beams. The second reinforcing rib is evenly distributed between the upper and lower main reinforcing beams on both sides. The support plate is attached to the outer side of the side plate. The second reinforcing rib is fixedly connected to the support plate by fasteners.

3. The rainwater treatment device for underground engineering construction in sponge cities according to claim 1, characterized in that: The inner surface of the side plate is provided with at least three layers of the first flow guide holes from bottom to top, and the distance between the upper and lower first flow guide holes gradually increases from bottom to top.

4. The rainwater treatment device for underground engineering construction in sponge cities according to claim 1, characterized in that: A flow guide groove is provided between the side plate and the bottom plate, and a second flow guide hole is provided on the inner wall of the flow guide groove. A first filter screen is provided at the opening of the flow guide groove.

5. The rainwater treatment device for underground engineering construction in sponge cities according to claim 1, characterized in that: The first water supply component includes a first water supply pipe, a first branch pipe, and a guide pipe. The first water supply pipe is located directly below the underground passage and is arranged along the length of the underground passage. The first water supply pipe is connected to the water collection box through the guide pipe, and the first water supply pipe is connected to the filter well cylinder through the first branch pipe.

6. The rainwater treatment device for underground sponge city construction according to claim 1, characterized in that: The filter well includes a cylinder, a cover plate, a second filter screen, and a stirring and speed-increasing mechanism. The cover plate is located at the top of the cylinder. The cylinder has an inlet and an outlet on its two sides, respectively. The second filter screen is located inside the cylinder, near the inlet. The stirring and speed-increasing mechanism is located inside the cylinder and passes through the second filter screen. The bottom of the cylinder has a wedge plate.

7. The rainwater treatment device for underground sponge city construction according to claim 6, characterized in that: The stirring and speed-up mechanism includes a housing, a stirring assembly, a transmission rod, a speed-up component, and a motor. The housing is connected to the cylinder via a fixing plate and has a through hole. The stirring assembly and the speed-up component are located on the upper and lower sides of the transmission rod, which passes through the through hole. The motor is located on the cylinder and connected to the housing via a rotating shaft. The rotating shaft is connected to the transmission rod via a gear set. The stirring assembly includes stirring blades evenly distributed in a ring. Each stirring blade includes a main blade and an auxiliary blade, with the main blade being larger than the auxiliary blade. The speed-up component includes a retaining ring and speed-up blades. The speed-up blades are evenly distributed in a ring at the bottom of the transmission rod, and the retaining ring is located at the top of the speed-up blades.

8. The rainwater treatment device for underground sponge city construction according to claim 1, characterized in that: The second water supply assembly includes a second water supply pipe and a second branch pipe. The second water supply pipe is located on one side of the filter well cylinder and is distributed along the length of the underground channel. The filter well cylinder is connected to the second water supply pipe through the second branch pipe.

9. The construction method of the rainwater treatment device for sponge city underground engineering construction as described in any one of claims 1 to 8, characterized in that... Includes the following steps: 1) Reinforcement of underground passages a. First, the first guide holes are symmetrically opened along the inner walls of both sides of the underground passage. The first guide holes in the lower row are close to the bottom of the side plate. The distance between the first guide holes in the middle row and the first guide holes at the bottom is 20-30mm. The distance between the first guide holes in the upper row and the first guide holes in the middle row is 50-60mm. b. Then, a guide channel is opened between the side plate and the bottom plate, and a second guide hole is opened along the side wall of the guide channel. The first guide hole is connected to the second guide hole, and a first filter screen is installed at the opening of the guide channel. c. Next, determine the dimensions of the reinforcement mechanism based on the dimensions of the underground passage, and process the main reinforcement beams, the first reinforcing rib, the second reinforcing rib, and the support plate according to the design requirements. Distribute the main reinforcement beams around the perimeter of the underground passage, and weld the first reinforcing rib evenly between the two main reinforcement beams located above and between the two main reinforcement beams located below. Weld the second reinforcing rib evenly between the upper and lower main reinforcement beams on both sides. At the same time, attach the support plate to the outside of the side plate and fix the second reinforcing rib to the support plate with fasteners. 2) Construction of the first water conveyance component a. First, determine the size of the water collection box based on the width of the bottom plate of the underground passage, and arrange the water collection boxes at equal intervals along the bottom of the bottom plate so that the first and second diversion holes are connected to the water collection box. b. Then, vertically install the guide pipe along the bottom of each water collection box, select the first water supply pipe, lay the first water supply pipe horizontally along the bottom of the underground passage, and connect the guide pipe to the first water supply pipe. c. Next, select a suitable first diversion pipe according to the distribution location of the filter well, connect one end of the first diversion pipe to the first water supply pipe, and seal the other end with a plug. d. Finally, install a solenoid valve on each of the first branch pipes; 3) Filter well construction a. First, make a suitable cylinder according to the distribution of the filter well. Open water inlet and water outlet holes on the left and right sides of the cylinder respectively, so that the water inlet hole is above the water outlet hole. Install wedge plates along the bottom inner side of the cylinder, and do not install wedge plates on the side closer to the water outlet hole. b. Then, horizontally install the second filter screen inside the cylinder, so that the second filter screen is located on the side close to the water inlet. Open the plug and connect each of the first diversion pipes to the water inlet on each filter cylinder. c. Next, according to the size of the cylinder, make a suitable stirring component, speed-increasing component and box. Make a guide hole in the vertical direction on the box. At the same time, install the stirring component and speed-increasing component on the upper and lower ends of the transmission rod respectively, so that the transmission rod passes through the guide hole. Then select a suitable motor, install the motor on the outside of the cylinder, and connect the rotating shaft to the motor. Connect the rotating shaft to the transmission rod through the gear set. d. Finally, install the box body into the cylinder using the fixing plate, and position the stirring assembly above the second filter screen; 4) Construction of the second water conveyance component a. First, according to the design requirements, a suitable second water supply pipe and a second diversion pipe are made, and the second water supply pipe is laid horizontally along the outside of the filter well. b. Then connect each filter well to the second water supply pipe through the second diversion pipe, and install a solenoid valve on the second diversion pipe; c. Next, connect the motor and solenoid valve to the external control system.

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