Shallow connection pretreatment structure and layout method for comprehensive treatment of lake overflow pollution

Abstract

The present application relates to a shallow connection pretreatment structure and layout method for comprehensive treatment of overflow pollution along the lake, which is characterized by: an energy dissipation pool is set between the water inlet channel and the first water pipe, and a flexible screen, a rigid baffle and a pipe mouth baffle are set in the energy dissipation pool; a sand settling well is set at the junction of the first water pipe and the second water pipe, and an arc-shaped sand blocking baffle is set at the pipe mouth of the second water pipe; a slurry control bag and a closed grouting body are set at the junction of the sand settling well and the first water pipe; water is first supplied through the first water supply pipe through the water trough adjustment, driving the flexible blanket to move along the cover chute, and then blowing the sand through the sand flushing nozzle to remove the sand through the sand inlet and the sand extraction pipe; the manhole cover connecting pipe and the first support beam are welded in sequence on the lower surface of the wellbore cover, and the second support beam is driven to support the well wall support pier through the adjustment bag, and the second support beam is returned to its original position through the support beam return rib. The present invention can improve the quality of debris interception, improve the sand settling effect, and improve the wellbore cover performance.

Description

Technical Field

[0001] The invention relates to a shallow connection pretreatment structure and a layout method for comprehensive treatment of lake overflow pollution, which can improve debris interception quality, improve sand settling effect, and enhance wellbore sealing performance, and belongs to the field of water delivery engineering. Background Art

[0002] In water transfer projects, energy dissipation pools are often used to reduce water energy, and grit chambers are used to remove and reduce sand and gravel in the water. How to improve the debris interception effect and sand and gravel removal quality, improve the connection performance between water pipes and grit chambers, and improve the bearing capacity of wellbore covers have always been the focus and difficulty of engineering control.

[0003] The existing technology already has a prefabricated channel sewage interception well. A well monitoring system is fixedly connected to the top of one side of the inner wall of the sewage interception well, and a drainage weir and sewage pipe are installed on the other side. A drainage outlet is penetrated on the side of the sewage interception well body near the drainage weir. A trash rack is installed horizontally inside the sewage interception well body between the sewage pipe and the drainage weir. Slide rails that match the trash rack are vertically embedded on both sides of the inner wall of the sewage interception well body. Although this technology can achieve guided sliding control of the trash rack, the trash rack is a steel box interceptor, which is easily damaged by collision with intercepted objects, affecting the interception effect. It also makes it difficult to achieve synchronous water spray purification. It does not address issues such as improving the sand settling effect of the sand settling well and enhancing the bearing capacity of the well cover.

[0004] In order to improve the sewage and sand interception effect of the water supply system, it is urgent to invent a comprehensive pollution control structure and layout method along the lake that can improve the quality of debris interception, improve the sand settling effect, and improve the wellbore sealing performance.

[0005] Application Contents

[0006] The purpose of this application is to address the above-mentioned problems existing in the prior art and to provide a shallow connection pretreatment structure and layout method for comprehensive treatment of overflow pollution along the lake.

[0007] In order to achieve the above application objectives, the present application adopts the following technical solutions: a water inlet channel, an energy dissipation pool, a first water pipe, a second water pipe and a sand settling well; a rigid baffle and an elastic baffle are provided in the energy dissipation pool between the water inlet channel and the first water pipe; a pipe orifice baffle is provided at one end of the first water pipe facing the energy dissipation pool; the other end is connected to the side wall of the sand settling well, and the other side wall of the sand settling well is connected to the second water pipe; a sand baffle is provided at the connection between the sand settling well and the second water pipe;

[0008] A sand storage trough is provided at the bottom of the sand storage trough. The cross section of the sand storage trough is arc-shaped. A sand inlet is provided at the lowest point of the sand storage trough. The sand storage trough is also provided with several sand flushing nozzles. A sealing chute is provided above the sand storage trough. The sealing chute is slidably connected to the adjustment water trough and the blanket roller through the adjustment slide. The adjustment water trough is provided with a seepage and drainage hole. One end of the flexible blanket is wound on the blanket roller, and the other end is connected to the side wall of the sand storage well. A blanket return rib is also provided between the adjustment slide and the side wall of the sand storage well.

[0009] A first support beam is connected to the bottom of the shaft cover of the silt trap through a manhole cover connecting pipe. The first support beam is connected to the second support beam through a support beam return rib. A falling object blocking net is provided below the second support beam.

[0010] As a preference: on both sides of the energy dissipation pool, the bottom elevation of the water inlet channel is lower than the bottom elevation of the first water pipe; on both sides of the grit pit, the bottom elevation of the first water pipe is lower than the bottom elevation of the second water pipe, and the bottom elevation of the grit pit is lower than the bottom elevation of the first water pipe.

[0011] As a preferred embodiment, a rigid baffle is provided in the energy dissipation pool on one side close to the first water pipe, and a baffle water hole is provided on the rigid baffle;

[0012] The two sides of the rigid baffle are connected to the energy dissipation pool through baffle chutes; the rigid baffle is provided with an anti-blocking water supply pipe through the baffle connecting rib on the side away from the elastic baffle, and the anti-blocking water supply pipe is provided with an anti-blocking nozzle, which faces the water hole of the baffle;

[0013] The elastic barrier is arranged on the side of the energy dissipation pool close to the water inlet channel through the barrier chute; a flexible barrier is provided on the surface of the elastic barrier below the barrier chute, and the top of the elastic barrier is connected to the barrier chute through a chute connecting tenon. The farthest end of the elastic barrier from the barrier chute is connected to a rope controller through a barrier rope, and the rope controller is higher than the water surface of the energy dissipation pool.

[0014] As a preferred embodiment: a slurry control bag is provided in the soil around the pipe where the sand trap is connected to the first water pipe, and the slurry control bag is connected to a grouting connection pipe; a baffle hanging groove and a baffle bottom groove are provided above and below the connection between the sand trap and the second water pipe, respectively, the upper and lower ends of the sand baffle are connected to the baffle hanging groove and the baffle bottom groove respectively, and a water trough hole is provided on the surface of the sand baffle.

[0015] Preferably: the sand flushing nozzle is connected to the first water supply pipe, and the sand inlet is connected to the external sand pumping equipment through the sand pumping pipe; the side of the sealing chute close to the first water pipe is lower than the side of the second water pipe, the positioning water trough is arranged on the side of the positioning slide facing the first water pipe, and the blanket roller and the blanket return rib are arranged on the side of the positioning slide facing the second water pipe; when there is no water in the positioning water trough, the positioning slide is located at the high point of the sealing chute, and the opening of the positioning water trough is opposite to the water outlet of the second water supply pipe.

[0016] Preferably: a positioning bag is provided at the end of the second support beam, the positioning bag is annular, the positioning bag and the manhole cover connecting pipe are connected by a bag inflation tube, the end of the second support beam is connected to the well wall support pier on the side wall of the sand settling well, and the outer side of the positioning bag is in contact with the side wall of the sand settling well; the falling object blocking net is a flexible structure.

[0017] Preferably, the bottom of the nozzle baffle is connected to the first water pipe, the upper portion of the nozzle baffle is an arc surface, and the central angle of the arc on the cross section of the nozzle baffle is 30-45°.

[0018] This method for laying out shallow connection pretreatment structures for comprehensive treatment of lake overflow pollution includes the following construction steps:

[0019] Step 1: Construction preparation: Survey and determine the location and the mechanical properties of the soil around the pipe;

[0020] Step 2: construct the water inlet channel, the first water pipe and the second water pipe;

[0021] Step 3: Energy dissipation pool construction: pour the energy dissipation pool and install rigid baffles and elastic baffles; install a pipe baffle at the outlet end of the first water pipe;

[0022] Step 4: Construction of sand trap: construct a sand trap and install a grouting bag at the junction of the sand trap and the first water pipe. Grout is injected into the grouting bag through the grouting connection pipe to form a closed grouting body. Install a sand retaining baffle at the end of the second water pipe.

[0023] Step 5: Laying out the sand trap at the bottom of the well: Set up a sand storage trough at the bottom of the sand trap, connect the sand flushing nozzle to the first water supply pipe, and connect the sand inlet to the sand pumping pipe and the external sand pumping equipment; set up a covering chute above the sand storage trough, which is slidably connected to the adjusting water tank and the covering roller through the adjusting slide;

[0024] Step 6. Arrangement of the shaft cover: weld the shaft cover connecting pipe under the shaft cover, and install the first support beam, support beam return ribs and second support beam in sequence; inflate the adjustment bag at the end of the second support beam; and set up a falling object blocking net.

[0025] The beneficial effects of the present invention are:

[0026] 1) An energy dissipation pool is set up between the water inlet channel and the first water supply pipe, and a flexible barrier net, a rigid barrier plate and a pipe mouth baffle are set up in the energy dissipation pool to form a combined interception system in the energy dissipation pool, thereby improving the effect of intercepting floating objects; at the same time, the intercepted objects in the flexible barrier net can be lifted by wrapping and rolling the barrier rope, thereby reducing the difficulty of lifting and removing the intercepted objects.

[0027] 2) A sand settling well is set at the junction of the first water pipe and the second water pipe, and the bottom elevation of the second water pipe is higher than the bottom elevation of the first water pipe. A sand blocking baffle is set at the pipe mouth of the second water pipe, thereby realizing combined sand settling in the sand settling well and improving the sand settling effect of the sand settling well.

[0028] 3) A grouting bag is set at the junction of the sand trap and the first water pipe, and grouting is injected into the grouting bag through the grouting connecting pipe to form a closed grouting body, thereby improving the airtightness of the connection between the water pipe and the sand trap.

[0029] 4) A sand storage trough with an arc-shaped cross section is set at the bottom of the sand settling pit, and a flushing nozzle and a sand inlet are set in the sand storage trough. A flexible blanket connected to a positioning water trough is provided above the sand storage trough, so that a separate sand discharge operation can be performed. When sand discharge is required, the first water supply pipe supplies water to the positioning water trough, and the flexible blanket is moved and laid along the sealing chute. The flushing nozzle below blows the settled sand, and the settled sand rises to the bottom surface of the flexible blanket and then falls back downwards, and is finally discharged through the sand inlet and the sand extraction pipe, thereby improving the sand discharge effect.

[0030] 5) The manhole cover connecting pipe and the first support beam are welded in sequence on the lower surface of the shaft cover, and the bag is inflated by adjusting the position of the manhole cover connecting pipe and the bag inflation pipe, driving the second support beam to support on the well wall support pier, and the second support beam is returned to its position through the support beam return rib, realizing the rapid deployment of the falling object blocking net at the bottom of the shaft cover and the second support beam. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a construction flow chart for the layout of shallow connection pretreatment structures for comprehensive treatment of lake overflow pollution according to the present invention;

[0032] Figure 2 yes Figure 1 Plan view of the energy dissipation pool;

[0033] Figure 3 yes Figure 1 Longitudinal section of the energy dissipation pool;

[0034] Figure 4 yes Figure 1 Longitudinal section of the sand well;

[0035] Figure 5 yes Figure 4 A top view of the connection structure between the first support beam and the second support beam;

[0036] Figure 6 yes Figure 4 Cross-sectional view of the connection structure between the first support beam and the second support beam.

[0037] In the figure: 1. Water inlet channel; 2. Energy dissipation pool; 3. First water pipe; 4. Second water pipe; 5. Sand well; 6. Soil around pipe; 7. Screen chute; 8. Board chute; 9. Rigid board; 10. Anti-blocking water supply pipe; 11. Board connecting rib; 12. Board water hole; 13. Anti-blocking nozzle; 14. Elastic screen; 15. Slide connecting tenon; 16. Screen pull rope; 17. Pull rope controller; 18. Flexible screen; 19. Pipe mouth baffle; 20. Slurry control bag; 21. Grouting connection pipe; 22. Closed grouting body; 23. Board hanging groove; 24. Board bottom groove; 25. Sand baffle; 26. Board Hanging plate; 27. Water trough hole; 28. Sand storage bottom trough; 29. Sand flushing nozzle; 30. Sand inlet; 31. Sand extraction pipe; 32. Sealing chute; 33. Adjusting water trough; 34. Adjusting slide plate; 35. Blanket roller; 36. Flexible blanket; 37. Blanket return rib; 38. First water supply pipe; 39. Second water supply pipe; 40. Seepage and drainage hole; 41. Shaft sealing; 42. Shaft cover connecting pipe; 43. First support beam; 44. Second support beam; 45. Support beam return rib; 46. Adjusting bag; 47. Bag inflation pipe; 48. Shaft wall support pier; 49. Support beam chute; 50. Beam top connecting plate; 51. Falling object blocking net. DETAILED DESCRIPTION

[0038] The following will be combined with the accompanying drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of this application.

[0039] Those skilled in the art should understand that, in the disclosure of this application, the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, which are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms cannot be understood as limiting this application.

[0040] Example 1

[0041] As an example, Figures 2 to 6The structure, shown here, is a shallow connection pretreatment system for comprehensive pollution control along lake overflows. It includes: a reinforced concrete inlet channel 1, rectangular in cross-section, 0.5m wide and 0.5m deep; a reinforced concrete energy dissipation basin 2, rectangular in cross-section, 1m wide and 0.75m deep; a first cement water pipe 3, 400mm in diameter; a second steel water pipe 4, 400mm in diameter; and a reinforced concrete sand settling well 5, 1.5m in diameter and 3m deep. The soil 6 surrounding the pipe is medium-dense sand.

[0042] A rigid baffle 9 and an elastic baffle 14 are provided in the energy dissipation pool 2 between the water inlet channel 1 and the first water pipe 3. The rigid baffle 9 is provided on the side of the energy dissipation pool 2 close to the first water pipe 3 and is provided with a baffle water hole 12 with a height of 1 cm and a width of 10 cm.

[0043] The rigid baffle 9 is connected to the energy dissipation pool 2 through baffle chutes 8 made of rolled steel plates on both sides; the rigid baffle 9 is provided with a 30 mm diameter anti-blocking water supply pipe 10 through a 20 mm diameter baffle connecting rib 11 on the side facing away from the elastic baffle 14, and the anti-blocking water supply pipe 10 is provided with an anti-blocking nozzle 13, and the anti-blocking nozzle 13 faces the baffle water hole 12; the bottom surface elevation of the rigid baffle 9 is 0.7 m lower than the water surface.

[0044] The elastic screen 14 is cut from a 10mm thick rubber sheet and is installed in the energy dissipation tank 2 near the water inlet channel 1 via the screen chute 7. The surface of the elastic screen 14 below the screen chute 7 is provided with a flexible screen 18 with a 5cm aperture. The top of the elastic screen 14 is connected to the screen chute 7 via a chute connecting tenon 15. The chute connecting tenon 15 is cut from a 10mm thick steel plate and has a "T"-shaped cross section. The farthest end of the elastic screen 14 from the screen chute 7 is connected to a rope controller 17 with a wire rope winch via a 30mm diameter screen rope 16. The rope controller 17 is higher than the water surface of the energy dissipation tank 2.

[0045] A 20mm-thick nozzle baffle 19 is installed at the end of the first water pipe 3 facing the energy dissipation pool 2. The bottom of this baffle 19 is connected to the first water pipe 3. The top of this baffle 19 is a circular arc with a central angle of 45° in its cross-section. The other end of the first water pipe 3 is connected to the sidewall of the grit pit 5, and the other sidewall of the grit pit 5 is connected to the second water pipe 4. A sand retaining baffle 25 is installed at the junction of the grit pit 5 and the second water pipe 4.

[0046] On both sides of the energy dissipation pool 2, the bottom elevation of the water inlet channel 1 is lower than the bottom elevation of the first water pipe 3; on both sides of the grit pit 5, the bottom elevation of the first water pipe 3 is lower than the bottom elevation of the second water pipe 4, and the bottom elevation of the grit pit 5 is lower than the bottom elevation of the first water pipe 3.

[0047] A 0.2mm-thick geomembrane-bonded slurry control bag 20 is installed within the soil surrounding the junction of the grit well 5 and the first water pipe 3. This slurry control bag 20 is connected to a 60mm-diameter grouting connection pipe 21. M20 cement mortar is pressurized into the slurry control bag 20 to form a closed grouting body 22. A baffle hanging groove 23 and a baffle bottom groove 24 are respectively installed above and below the junction of the grit well 5 and the second water pipe 4. Both the baffle hanging groove 23 and the baffle bottom groove 24 are rolled from 10mm-thick steel plate. A sand-blocking baffle 25 with an arc-shaped cross section is arranged between the baffle hanging groove 23 and the baffle bottom groove 24. The top of the sand-blocking baffle 25 is connected to the baffle hanging groove 23 through a baffle hanging plate 26, and the baffle hanging plate 26 is rolled from a steel plate with a thickness of 10 mm; the sand-blocking baffle 25 is rolled from a steel plate with a thickness of 10 mm, and a water trough hole 27 with an inverted trapezoidal plane is provided on the surface of the sand-blocking baffle 25, with a height of 10 cm, a top width of 10 cm, and a bottom width of 2 mm.

[0048] A sand storage bottom trough 28 with an arc-shaped cross section and a central angle of 60° is provided at the bottom of the sand storage bottom trough 28. A sand inlet 30 with a diameter of 100 mm is provided at the lowest point of the sand storage bottom trough 28. The sand storage bottom trough 28 is also provided with several sand flushing nozzles 29; the sand flushing nozzle 29 is connected to a first water supply pipe 38 with a diameter of 30 mm, and the sand inlet 30 is connected to an external sand pumping equipment through a sand pumping pipe 31 with a diameter of 100 mm; the side of the sealing chute 32 close to the first water pipe 3 is lower than the side of the second water pipe 4, the positioning water trough 33 is provided on the side of the positioning slide 34 facing the first water pipe 3, and the blanket roller 35 and the blanket return rib 37 are provided on the side of the positioning slide 34 facing the second water pipe 4; when there is no water in the positioning water trough 33, the positioning slide 34 is located at the high point of the sealing chute 32, and the opening of the positioning water trough 33 is facing the water outlet of the second water supply pipe 39.

[0049] Two parallel, 10mm thick steel plate rolled cover chutes 32 are provided above the sand storage bottom trough 28. The cover chute 32 is slidably connected to a 1m3 volume adjustment trough 33 cut from 1mm thick steel plate and a 10cm diameter stainless steel blanket roller 35 via a positioning slide 34 rolled from 10mm thick steel plate. The positioning trough 33 is provided with a 2mm diameter seepage and drainage hole 40. A flexible blanket 36 made of 1mm thick geomembrane is wound around the blanket roller 35 at one end and connected to the side wall of the sand settling well 5 at the other end. A blanket return rib 37 is also provided between the positioning slide 34 and the side wall of the sand settling well 5.

[0050] The second water supply pipe 39 is a stainless steel pipe with a diameter of 30 mm. Water is supplied to the adjustment water tank 33 through the second water supply pipe 39, so that the adjustment water tank 33 drives the blanket roller 35 and the flexible blanket 36 to move downward along the covering chute 32 under the action of gravity.

[0051] The shaft cover 41 of the sand trap 5 is rolled from 20mm thick steel plate and has a diameter of 80cm. A first support beam 43 is connected to the bottom via a 50cm diameter manhole cover connecting pipe 42. Both the first and second support beams 43 and 44 are rolled from 1cm thick steel plate. A support beam return rib 45 is installed between the first and second support beams 43 and 44. A U-shaped support beam chute 49 is installed on the first support beam 43. The width of the support beam chute 49 is 10cm. The support beam return rib 45 is rolled from a 20mm diameter spring and welded at both ends to the top connecting plates 50 on the top surfaces of the first and second support beams 43 and 44. A falling object blocking net 51 with a 5cm aperture is installed below the second support beam 44.

[0052] The end of the second support beam 44 is fitted with a sealed, ring-shaped positioning bag 46 made of a 1mm-thick rubber sheet. A 30mm-diameter inflation tube 47 connects the bag 46 to the manhole cover connecting pipe 42. The end of the second support beam 44 is connected to a rectangular support pier 48 made of 10mm-thick steel plate on the sidewall of the sand pit 5. The outer side of the positioning bag 46 is in contact with the sidewall of the sand pit 5. The falling object prevention net 51 is a flexible structure.

[0053] Example 2

[0054] As another embodiment, the layout method of the shallow connection pretreatment structure for comprehensive treatment of overflow pollution along the lake in embodiment 1 is as follows: Figure 1 Shown, including:

[0055] Step 1: Construction preparation: Survey and determine the planar positions of the water inlet channel 1, energy dissipation pool 2, first water pipe 3, second water pipe 4, and sand trap 5, conduct geological surveys, and determine the physical and mechanical properties of the soil 6 surrounding the pipes;

[0056] Step 2: Construction of the water inlet channel, first water pipe, and second water pipe: Use open excavation to construct the water inlet channel 1; use trenching or jacking to construct the first water pipe 3 and the second water pipe 4, and make the bottom elevation of the second water pipe 4 0.2-0.5m higher than the bottom elevation of the first water pipe 3;

[0057] Step 3, energy dissipation pool construction: dig a groove and pour concrete between the water inlet channel 1 and the first water pipe 3 to form an energy dissipation pool 2 with a rectangular or U-shaped cross section; set a screen chute 7 and a baffle chute 8 on the inner wall of the energy dissipation pool 2, and make the screen chute 7 close to the water inlet channel 1, and make the baffle chute 8 close to the first water pipe 3; insert the baffle chute 8 on both sides of the rigid baffle 9, and set an anti-blocking water supply pipe 10 on the side of the rigid baffle 9 away from the screen chute 7, so that the anti-blocking water supply pipe 10 is connected to the rigid baffle 9 through the baffle connecting rib 11 Next, an anti-blocking nozzle 13 is installed on the anti-blocking water supply pipe 10 facing the baffle water hole 12; one end of the elastic barrier 14 is connected to the barrier chute 7 through the chute connecting tenon 15, and the other end is connected to the rope controller 17 through the barrier rope 16; flexible barriers 18 are respectively installed on the bottom and side of the elastic barrier 14; the bottom elevation of the elastic barrier 14 is 0.3 to 0.5 meters lower than the water surface, and the bottom elevation of the rigid baffle 9 is 0.5 to 1 meter lower than the water surface; a pipe mouth baffle 19 is installed on the side of the first water supply pipe 3 facing the energy dissipation pool 2;

[0058] Step 4: Construction of the sand trap: A sand trap 5 is set at the junction of the first water pipe 3 and the second water pipe 4, and a grouting bag 20 is set at the junction of the sand trap 5 and the first water pipe 3. Grouting is injected into the grouting bag 20 through the grouting connection pipe 21 to form a closed grouting body 22; a baffle hanging groove 23 and a baffle bottom groove 24 are respectively set above and below the junction of the sand trap 5 and the second water pipe 4, and a sand baffle 25 with a circular cross section is set between the baffle hanging groove 23 and the baffle bottom groove 24;

[0059] Step 5. Layout of the sand trap at the bottom of the well: a sand storage bottom trough 28 with an arc-shaped cross section is set at the bottom of the sand trap 5, and a sand flushing nozzle 29 and a sand inlet 30 are set in the sand storage bottom trough 28; the sand flushing nozzle 29 is connected to the first water supply pipe 38, and the sand inlet 30 is connected to the sand pumping pipe 31 and the external sand pumping equipment; two mutually parallel sealing chutes 32 are set above the sand storage bottom trough 28, and the adjustment water trough 33 is connected to the sealing chute 32 through the adjustment slide 34. 2 connection; a blanket roller 35 is provided on the adjustment water tank 33, and a flexible blanket 36 is provided on the blanket roller 35; a blanket return rib 37 is provided on the adjustment slide 34 away from the adjustment water tank 33, and the other end of the blanket return rib 37 is connected to the side wall of the sand settling well 5; water is supplied to the adjustment water tank 33 through a second water supply pipe 39, so that the adjustment water tank 33 drives the blanket roller 35 and the flexible blanket 36 to move downward along the capping chute 32 under the action of gravity;

[0060] Step 6. Arrangement of the shaft cover: weld the shaft cover connecting pipe 42 and the first support beam 43 in sequence on the lower surface of the shaft cover 41, and arrange the first support beam 43 in a cross shape; arrange support beam return ribs 45 between the first support beam 43 and the second support beam 44; stick a positioning bag 46 on the end of the second support beam 44, and connect the positioning bag 46 with the shaft cover connecting pipe 42 through the bag inflation pipe 47; inflate the positioning bag 46 through the shaft cover connecting pipe 42 and the bag inflation pipe 47 to drive the second support beam 44 to support on the shaft wall support pier 48; and arrange a flexible falling object blocking net 51 at the lower part of the second support beam 44.

[0061] The parts not described in detail in this application are prior art, so this application does not describe them in detail.

[0062] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the elements may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0063] Although this document uses a lot of professional terms, it does not exclude the possibility of using other terms. These terms are used only to more conveniently describe and explain the essence of this application; interpreting them as any additional restrictions is contrary to the spirit of this application.

[0064] This application is not limited to the above-mentioned optimal implementation method. Anyone can derive various other forms of products based on the inspiration of this application. However, no matter what changes are made in their shape or structure, any technical solution that is the same or similar to that of this application falls within the scope of protection of this application.

Claims

1. A method for laying out a shallow connection pretreatment structure for comprehensive treatment of overflow pollution along the lake, characterized in that: The construction steps include: Step 1: Construction preparation: Survey and determine the location and the mechanical properties of the soil around the pipe (6); Step 2: constructing the water inlet channel (1), the first water pipe (3) and the second water pipe (4); Step 3: Construction of the energy dissipation pool: pouring the energy dissipation pool (2) and installing a rigid baffle (9) and an elastic baffle (14); installing a pipe mouth baffle (19) at the outlet end of the first water pipe (3); The rigid baffle (9) is arranged in the energy dissipation pool (2) on one side close to the first water pipe (3), and a baffle water hole (12) is provided on the rigid baffle (9); Both sides of the rigid baffle (9) are connected to the energy dissipation pool (2) through baffle chutes (8); an anti-blocking water supply pipe (10) is provided on the side of the rigid baffle (9) away from the elastic baffle (14) through the baffle connecting rib (11); the anti-blocking water supply pipe (10) is provided with an anti-blocking nozzle (13), and the anti-blocking nozzle (13) faces the baffle water hole (12); The elastic blocking net (14) is arranged in the energy dissipation pool (2) on the side close to the water inlet channel (1) through the blocking net chute (7); a flexible blocking net (18) is provided on the surface of the elastic blocking net (14) below the blocking net chute (7); the top of the elastic blocking net (14) is connected to the blocking net chute (7) through the chute connecting falcon (15); the farthest end of the elastic blocking net (14) from the blocking net chute (7) is connected to a rope controller (17) through a blocking rope (16); and the rope controller (17) is higher than the water surface of the energy dissipation pool (2); Step 4, construction of the sand trap: construct the sand trap (5), and set a grouting bag (20) at the junction of the sand trap (5) and the first water pipe (3), pressurize the grouting bag (20) through the grouting connecting pipe (21) to form a closed grouting body (22); set a sand blocking baffle (25) at the end of the second water pipe (4); Step 5: Arrangement of the sand trap at the bottom of the sand trap (5): a sand storage bottom trough (28) is provided at the bottom of the sand trap (5), and the sand flushing nozzle (29) is connected to the first water supply pipe (38), and the sand inlet (30) is connected to the sand pumping pipe (31) and the external sand pumping equipment; a covering chute (32) is provided above the sand storage bottom trough (28), and is slidably connected to the adjusting water trough (33) and the covering roller (35) through the adjusting slide (34); The side of the capping chute (32) close to the first water pipe (3) is lower than the side of the second water pipe (4); the positioning water trough (33) is provided on the side of the positioning slide plate (34) facing the first water pipe (3); the blanket roller (35) and the blanket return rib (37) are provided on the side of the positioning slide plate (34) facing the second water pipe (4); when there is no water in the positioning water trough (33), the positioning slide plate (34) is located at the highest point of the capping chute (32), and the opening of the positioning water trough (33) is directly opposite to the water outlet of the second water supply pipe (39); Step 6: Arrangement of the shaft cover: Weld the shaft cover connecting pipe (42) below the shaft cover (41), and sequentially arrange the first support beam (43), the support beam return rib (45), and the second support beam (44); inflate the adjustment bag (46) at the end of the second support beam (44); and arrange the falling object blocking net (51); The shallow connection pretreatment structure for comprehensive treatment of overflow pollution along the lake comprises: an inlet channel (1), an energy dissipation pool (2), a first water pipe (3), a second water pipe (4) and a sand trap (5); a rigid baffle (9) and an elastic baffle (14) are provided in the energy dissipation pool (2) between the inlet channel (1) and the first water pipe (3); a pipe mouth baffle (19) is provided at one end of the first water pipe (3) facing the energy dissipation pool (2); the other end is connected to the side wall of the sand trap (5), and the other side wall of the sand trap (5) is connected to the second water pipe (4); a sand blocking baffle (25) is provided at the connection between the sand trap (5) and the second water pipe (4); A sand storage bottom trough (28) is provided at the bottom of the sand storage bottom trough (5), the cross section of the sand storage bottom trough (28) is arc-shaped, a sand inlet (30) is provided at the lowest point of the sand storage bottom trough (28), and the sand storage bottom trough (28) is also provided with a plurality of sand flushing nozzles (29); a cover chute (32) is provided above the sand storage bottom trough (28), the cover chute (32) is slidably connected to a position adjustment trough (33) and a blanket roller (35) through a position adjustment slide (34), the position adjustment trough (33) is provided with a seepage and drainage hole (40), one end of a flexible blanket (36) is wound on the blanket roller (35), and the other end is connected to the side wall of the sand storage well (5), and a blanket return rib (37) is further provided between the position adjustment slide (34) and the side wall of the sand storage well (5); A first support beam (43) is connected below the shaft cover (41) of the sand trap (5) via a cover connecting pipe (42); the first support beam (43) is connected to a second support beam (44) via a support beam return rib (45); and a falling object blocking net (51) is provided below the second support beam (44).

2. The deployment method according to claim 1, wherein: On both sides of the energy dissipation pool (2), the bottom elevation of the water inlet channel (1) is lower than the bottom elevation of the first water pipe (3); on both sides of the sand settling well (5), the bottom elevation of the first water pipe (3) is lower than the bottom elevation of the second water pipe (4), and the bottom elevation of the sand settling well (5) is lower than the bottom elevation of the first water pipe (3).

3. The deployment method according to claim 1, wherein: A grouting bag (20) is provided in the soil around the connection between the sand trap (5) and the first water pipe (3), and the grouting bag (20) is connected to a grouting connection pipe (21); a baffle plate hanging groove (23) and a baffle plate bottom groove (24) are provided above and below the connection between the sand trap (5) and the second water pipe (4), respectively; the upper and lower ends of the sand baffle plate (25) are connected to the baffle plate hanging groove (23) and the baffle plate bottom groove (24), respectively; and a water trough hole (27) is provided on the surface of the sand baffle plate (25).

4. The deployment method according to claim 1, wherein: The end of the second support beam (44) is provided with a positioning bag (46), which is annular. The positioning bag (46) and the manhole cover connecting pipe (42) are connected via a bag inflation pipe (47). The end of the second support beam (44) is connected to the well wall support pier (48) on the side wall of the sand settling well (5), and the outer side of the positioning bag (46) is in contact with the side wall of the sand settling well (5); the falling object blocking net (51) is a flexible structure.

5. The deployment method according to claim 1, wherein: The bottom of the pipe orifice baffle (19) is connected to the first water delivery pipe (3), the upper portion of the pipe orifice baffle (19) is an arc surface, and the central angle of the arc on the cross section of the pipe orifice baffle (19) is 30° to 45°.

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