Rainwater drainage system suitable for sponge city construction

Abstract

The utility model discloses a rainwater drainage system suitable for sponge city construction, which comprises a rainwater grate, a rainwater collecting groove, an initial rainwater drainage pipe and a rainwater grate connecting curb, a rainwater grate is connected with the rainwater grate connecting curb, the rainwater grate comprises a rainwater grate body, and the rainwater grate body comprises a rainwater leaking grid and a rainwater grate movable outer frame. The rainwater leakage grid is connected with the rainwater grate movable outer frame, the rainwater collection groove is formed in the lower portion of the rainwater grate body, and the initial rainwater drainage pipe is located on the lower portion of the rainwater grate connecting curb. The rainwater drainage system solves the problem that the rainwater collection end of an existing rainwater system is blocked, collection and recycling of surface runoff pollutants are achieved in the non-heavy rainfall period in the rainy season, and the rainwater drainage system can reliably cope with green land absorption saturation caused by short-time rainstorm and heavy rainfall or continuous rainfall so that emergency flood drainage can be achieved; the flood peak reduction amount and the flood peak delaying effect of the rainwater drainage system are increased, urban flood disasters are avoided, and potential safety hazards and economic losses are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of rainwater drainage, and in particular to a rainwater drainage system suitable for sponge city construction. Background Art

[0002] With the acceleration of urbanization, the area of ​​industrial parks, one of the important characteristics of urbanization, is getting larger and larger. Industrial parks include specific areas that focus on developing knowledge-intensive and technology-intensive industries, including textile, petrochemical, transportation, chemical manufacturing, warehousing and other science and technology parks. Since the general form of existing industrial parks is a very dense community, its area is one of the important components of the urban area, mainly composed of hard impermeable pavement, steel workshops and cement office buildings. Existing park factors lead to land suspended matter (SS) in storm runoff from industrial parks. The pollution load generated by the initial runoff of storms is much higher than that of urban domestic sewage. The effective connection between water environment pollution caused by non-point sources and the urban stormwater pipe system is an urgent problem to be solved in the relevant technical field.

[0003] As one of the collection ends of the sponge city rainwater system, the rainwater inlet’s function of intercepting debris and draining rainwater directly affects the functions of the sponge city’s initial rainwater discharge facilities, rainwater storage and reuse facilities and other systems.

[0004] The existing rainwater system discharge mode is mainly divided into three stages: precipitation-collection-discharge, and the discharge is mainly in the form of quick discharge. Among them, the rainwater drainage pipeline is limited by economic and engineering technology conditions, and the pipeline design standards cannot meet the discharge needs of rainstorms in extreme situations. If extreme weather occurs frequently, it is easy to cause urban floods and waterlogging disasters, posing a huge threat to the economy and people. Utility Model Content

[0005] The utility model is to overcome the above-mentioned shortcomings of the existing technology and provide a rainwater drainage system suitable for sponge city construction. The rainwater drainage system of the utility model solves the blockage of the existing rainwater system at the rainwater collection end, realizes the collection and reuse of surface runoff pollutants during the non-heavy rainfall period in the rainy season, can reliably deal with short-term heavy rain or continuous precipitation that leads to saturation of green space absorption and emergency drainage, increase the flood peak reduction and hysteresis flood peak effect of the rainwater discharge system, avoid urban flood disasters, and avoid safety hazards and economic losses.

[0006] The technical solution adopted by the utility model to solve its technical problems is:

[0007] A rainwater drainage system suitable for sponge city construction includes a rainwater grate, a rainwater collecting trough, an initial rainwater drainage pipe, and a rainwater grate connected to a curbstone. The rainwater grate is connected to the rainwater grate connected to the curbstone. The rainwater grate includes a rainwater grate body. The rainwater grate body includes a rainwater leakage grille and a rainwater grate movable outer frame. The rainwater leakage grille is connected to the rainwater grate movable outer frame. The rainwater collecting trough is arranged at the lower part of the rainwater grate body. The initial rainwater drainage pipe is located at the lower part of the rainwater grate connected to the curbstone.

[0008] The rain leaking grille is provided with a fixed hanging ear and a movable hanging ear, and the rain leaking grille is connected with the movable outer frame of the rain grate through the fixed hanging ear and the movable hanging ear. The rain leaking grille is rotated by the fixed hanging ear and swings relative to the movable outer frame of the rain grate at an angle.

[0009] The rainwater grate connecting block comprises a connecting curbstone body, on which connecting ears on both sides of the curbstone are arranged, and the connecting ears on both sides of the curbstone are connected to the curbstone structure of the urban road to play a fixing role.

[0010] The interior of the rainwater grate connection block is a hollow structure to collect part of the surface runoff and increase the direction of rainwater discharge.

[0011] A peak rainwater overflow pipe is arranged on the upper part of the initial rainwater drainage pipe near the rainwater grate connected to the curbstone, and a green space drainage gravel layer is arranged on one side of the peak rainwater overflow pipe.

[0012] A concrete cushion is provided between the upper part of the initial rainwater drainage pipe and the peak rainwater overflow pipe to maintain the stability of the vertical structure.

[0013] The rainwater grate body adopts a shallow V-shaped structure with high ends and a low middle.

[0014] When the surface scouring materials cover the movable hanging ears, the rainwater grille is rotated by fixing the hanging ears, and reflective strips and other warning signs are set on the raised parts of the grille to remind passers-by.

[0015] The beneficial effects of the utility model are:

[0016] 1. The utility model includes a rainwater grate body including a rainwater leaking grille and a movable outer frame of the rainwater grate, the rainwater leaking grille is connected to the movable outer frame of the rainwater grate, and a rainwater collecting trough is arranged at the lower part of the rainwater grate body, and the rainwater collecting trough 9 is a collecting trough for initial rainwater and peak rainwater. The utility model solves the problem of blockage of the existing rainwater system at the rainwater collection end, realizes the collection and reuse of surface runoff pollutants during the non-heavy rainfall period in the rainy season, can reliably deal with short-term heavy rain or continuous precipitation that leads to saturation of green space consumption and emergency drainage, increases the peak flood reduction amount and delayed peak flood effect of the rainwater discharge system, solves the problem that the existing technology cannot meet the demand for rainstorm discharge in extreme cases, avoids causing urban flood disasters, and avoids safety hazards and economic losses.

[0017] 2. The urban rainwater discharge system of the utility model has the function of retention and emission reduction. The rainwater drainage method can minimize the external drainage volume, reduce the flood control pressure of urban rivers and lakes, and ensure safety during the flood season.

[0018] 3. The utility model can be set up according to the hydrological and geological conditions of the actual application site, and for the conditions of roads and green spaces, so that the system is suitable for the reasonable spacing of rainwater outlets determined by the specifications. When the slope section is short, water can be collected at the lowest point, and the number of rainwater outlets should be appropriately increased to meet the requirements of the existing technology for drainage design specifications in industrial parks that the rainwater outlets are convenient for water collection and have good connection conditions with rainwater pipes. For example, the spacing of the water outlets may be 25m-50m according to the specific situation and the catchment area.

[0019] 4. The connecting curbstone body is provided with connecting ears on both sides of the curbstone, which are connected to the curbstone structure of the urban road through the connecting ears on both sides of the curbstone to play a fixing role.

[0020] 5. Since the rainwater grate connection block has a hollow structure inside, it can collect part of the surface runoff and increase the flow direction of rainwater discharge.

[0021] 6. By providing a concrete cushion between the upper part of the initial rainwater drainage pipe and the peak rainwater overflow pipe, the stability of the vertical structure can be maintained.

[0022] 7. Warning signs are set on the raised parts of the grille. When the surface scouring material covers the movable hanging ears, the rainwater grille is rotated by the fixed hanging ears, and warning signs such as reflective strips are set on the raised parts of the grille to remind passers-by. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the utility model;

[0024] Figure 2 yes Figure 1 A schematic diagram of a top view structure;

[0025] Figure 3 for Figure 2 Schematic diagram of the II cross-sectional structure;

[0026] Figure 4 for Figure 2 Schematic diagram of the II-II cross-section structure.

[0027] In the figure, there are rain leak grille 1, rainwater grate body 2, rainwater grate connected to curbstone 3, connecting ears on both sides of curbstone 4, fixed hanging ears 5, green space drainage outlet 6, movable outer frame of rain grate 7, green space drainage gravel layer 8, rainwater collection trough 9, initial rainwater drainage pipe 10, peak rainwater overflow pipe 11, connection to curbstone body 12, movable hanging ears 13, low water level 14, high water level 15, curbstone foundation concrete cushion 16. DETAILED DESCRIPTION

[0028] The present invention is further described below by way of embodiments and in conjunction with the accompanying drawings:

[0029] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0030] The front, back, left, right, top, bottom and other directions of the present invention only represent the relative positions in the drawings and do not represent the absolute positions of the products.

[0031] like Figure 1-4 As shown, a rainwater drainage system suitable for sponge city construction includes a rainwater grate, a rainwater collection trough 9, an initial rainwater drainage pipe 10, and a rainwater grate connected to a curbstone 3, wherein the rainwater grate is connected to the rainwater grate connected to the curbstone 3, wherein the rainwater grate includes a rainwater grate body 2, wherein the rainwater grate body 2 includes a rainwater leakage grille 1 and a rainwater grate movable outer frame 7, wherein the rainwater leakage grille 1 is connected to the rainwater grate movable outer frame 7. The rainwater collection trough 9 is provided at the lower part of the rainwater grate body 2, and the initial rainwater drainage pipe 10 is located at the lower part of the rainwater grate connected to the curbstone 3. The rainwater collection trough 9 is a collection trough for initial rainwater and peak rainwater.

[0032] The rain drain grille 1 is provided with a fixed hanging ear 5 and a movable hanging ear 13, and the rain drain grille 1 is connected to the movable outer frame 7 of the rain grate through the fixed hanging ear 5 and the movable hanging ear 13. The rain drain grille 1 is rotated by the fixed hanging ear 5 to swing relative to the movable outer frame 7 of the rain grate at an angle.

[0033] The rainwater grate connecting block 3 comprises a connecting curbstone body 12, on which connecting ears 4 are arranged on both sides of the curbstone, and the connecting ears 4 on both sides of the curbstone are connected to the curbstone structure of the urban road to play a fixing role.

[0034] The interior 6 of the rainwater grate connection block 3 is a hollow structure 6 to collect part of the surface runoff and increase the flow direction of rainwater discharge.

[0035] A peak rainwater overflow pipe 11 is provided on the upper part of the initial rainwater drainage pipe 10 near the side where the rainwater grate is connected to the curbstone 3, and a green space drainage gravel layer 8 is provided on one side of the peak rainwater overflow pipe 11.

[0036] A concrete cushion layer 16 is provided between the upper portion of the initial rainwater drainage pipe 10 and the flood peak rainwater overflow pipe to maintain the stability of the vertical structure.

[0037] The rainwater grate body 2 adopts a shallow V-shaped structure with high ends and a low middle.

[0038] When the surface scouring objects cover the movable hanging ears 13, the rainwater grille 1 is rotated by the fixed hanging ears 5, and warning signs such as reflective strips are set on the raised parts of the grille to remind passers-by.

[0039] The utility model is capable of alleviating the problem that the surface washed materials in the urban flood peak rainfall cover the holes of the rainwater grate and thus affect the use of drainage facilities by arranging rotatable hanging ears 5 and 7 on the structure of the rainwater grate body 2. The rainwater grate is in a shallow V-shape with a local slope of 0.3%, so that the impact of collected rainwater is concentrated in the middle of the rainwater grate.

[0040] A rainwater collecting trough 9 for collecting initial rainwater and peak rainwater is set below the rainwater grate body 2, and the initial rainwater is discharged to the municipal rainwater network through the initial rainwater drainage pipe 10. When the rainfall reaches the low water level 14, the rainwater will penetrate into the adjacent green drainage gravel layer 8 through the multi-porous permeable material and then enter the lower soil layer of the green space for water conservation; when the rainfall reaches the high water level 15, the peak rainwater is discharged to the surrounding sunken green space through the overflow pipe 11 and the green space discharge outlet 6 of the curb.

[0041] During the peak period, rainwater flows through the shallow V-shaped rainwater grate, which is partially discharged to the green space outlet 6 at the bottom of the rainwater grate connected to the curb 3 at a slope of 0.3%, and then discharged to the sunken green space. If the surface is covered by scouring objects, the grille on the road side of the rainwater grate can be pulled up to rotate the grille, and reflective strips are set on the raised parts of the grille to remind passers-by.

[0042] During the non-rainstorm period, the initial unclean surface runoff and soil debris in the rainwater collection trough 9 are discharged to the municipal rainwater network through the initial rainwater drainage pipe 10. When the water level reaches a high level in the later stage, it is discharged through the overflow port through the green space drainage gravel layer 8 to the aquifer of the underground soil of the surrounding green space to prevent erosion of the soil, thereby playing the role of water and soil conservation.

[0043] The rainwater grate of the utility model can be made of different materials according to the installation position to meet the load requirements. The utility model is not limited to the above embodiments. Those skilled in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and purpose of the utility model. The scope of the utility model is defined by the claims and their equivalents.

[0044] The nonlinear reservoir model used in surface runoff simulation is used to study the area of ​​the model variables, the width of the drainage area, the Manning roughness coefficient of different surfaces, the depression storage capacity of the surface with depression storage, and the slope of the entire drainage area. The slope of the rainwater collection point is designed according to the hydraulic calculation. If the slope is too small, the flow rate will be too low, and if the slope is too large, the slope drop will be too large. The design is based on the existing road longitudinal slope of 0.3%, and the transverse slope is not steeper than 1:6. The rainwater grate is designed with a double slope design slope of 5%, which is low in the middle and high on both sides.

[0045] The utility model is based on the ground waterlogging design standard in the recurrence period of the waterlogging prevention design in the "Outdoor Drainage Design Code": the water accumulation depth of a lane does not exceed 15cm as the standard, and the road is calculated as a model with length, width and height. The branch road is selected to have a cross slope of 2%, a water accumulation depth of 0.15m, a width of the flooded motor vehicle lane of 7.5m on each side, and the branch road surface is basically flooded. The road drainage system is designed in levels: the rainwater drainage network of the main road and the secondary road is designed with a recurrence period of 3 years, the rainwater drainage system of the branch road is designed with a recurrence period of 2 years, and the control standard of 15cm of water accumulation in the branch road in 1 hour.

[0046] The above is a preferred embodiment of the present invention, and the description of the specific embodiment is only used to better understand the concept of the present invention. For ordinary technicians in this technical field, several improvements or equivalent substitutions can be made according to the principle of the present invention, and these improvements or equivalent substitutions are also considered to fall within the protection scope of the present invention.

Claims

1. A rainwater drainage system suitable for sponge city construction, comprising a rainwater grate, a rainwater collection trough, and an initial rainwater drainage pipe, characterized in that: It also includes a rainwater grate connected to the curbstone, the rainwater grate is connected to the rainwater grate connected to the curbstone, the rainwater grate includes a rainwater grate body, the rainwater grate body includes a rainwater leakage grid and a rain grate movable outer frame, the rainwater leakage grid is connected to the rain grate movable outer frame, the rainwater collecting trough is arranged at the lower part of the rainwater grate body, and the initial rainwater drainage pipe is located at the lower part of the rainwater grate connected to the curbstone.

2. The rainwater drainage system suitable for sponge city construction according to claim 1 is characterized in that: The rain leaking grille is provided with a fixed hanging ear and a movable hanging ear, and the rain leaking grille is connected with the movable outer frame of the rain grate through the fixed hanging ear and the movable hanging ear. The rain leaking grille is rotated by the fixed hanging ear and swings relative to the movable outer frame of the rain grate at an angle.

3. The rainwater drainage system suitable for sponge city construction according to claim 1 is characterized in that: The rainwater grate connecting block comprises a connecting curbstone body, on which connecting ears on both sides of the curbstone are arranged, and the connecting ears on both sides of the curbstone are connected to the curbstone structure of the urban road to play a fixing role.

4. The rainwater drainage system suitable for sponge city construction according to claim 1 is characterized in that: The interior of the rainwater grate connection block is a hollow structure to collect part of the surface runoff and increase the direction of rainwater discharge.

5. The rainwater drainage system suitable for sponge city construction according to claim 1 is characterized in that: A peak rainwater overflow pipe is arranged on the upper part of the initial rainwater drainage pipe near the rainwater grate connected to the curbstone, and a green space drainage gravel layer is arranged on one side of the peak rainwater overflow pipe.

6. The rainwater drainage system suitable for sponge city construction according to claim 5 is characterized in that: A concrete cushion is provided between the upper part of the initial rainwater drainage pipe and the peak rainwater overflow pipe to maintain the stability of the vertical structure.

7. The rainwater drainage system suitable for sponge city construction according to claim 1 is characterized in that: The rainwater grate body adopts a shallow V-shaped structure with high ends and a low middle.

8. The rainwater drainage system suitable for sponge city construction according to claim 2 is characterized in that: When the surface scouring materials cover the movable hanging ears, the rainwater grille is rotated by fixing the hanging ears, and warning signs are set on the raised parts of the grille to remind passers-by.

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