阅读说明：本技术 一种水利工程渠道新型排水系统 (Novel drainage system of hydraulic engineering channel ) 是由 朱会昌 梁国伟 龙辉 杜秀萍 张学朴 金华 姚姣 李保亮 孙鹏举 崔华 于 2021-09-01 设计创作，主要内容包括：本申请涉及排水工程的技术领域,尤其是涉及一种水利工程渠道新型排水系统,包括城市排水系统和辅助排水系统,所述辅助排水系统包括设置在城市内的城市排水管网和设置在城市周边的周边排水管网；所述城市排水管网包括设置在城市内的中心临时存水区和设置在城市内的水体,所述中心临时存水区与水体之间连接有地下排水管道；所述周边排水管网包括设置在城市边缘的周边临时存水区和设置在周边的水库,所述周边临时存水区与水库之间设置有地表排水管道。本申请的排水系统能够提高城市排水系统的排水能力,减少城市内涝的情况发生,同时减小对城市建筑设施的破坏。(The application relates to the technical field of drainage engineering, in particular to a novel drainage system of a hydraulic engineering channel, which comprises a municipal drainage system and an auxiliary drainage system, wherein the auxiliary drainage system comprises a municipal drainage pipe network arranged in a city and a peripheral drainage pipe network arranged at the periphery of the city; the urban drainage pipe network comprises a central temporary water storage area arranged in a city and a water body arranged in the city, and an underground drainage pipe is connected between the central temporary water storage area and the water body; the peripheral drainage pipe network comprises a peripheral temporary water storage area arranged at the edge of a city and a reservoir arranged at the periphery, and a surface drainage pipeline is arranged between the peripheral temporary water storage area and the reservoir. The drainage system of this application can improve urban drainage system's drainage ability, and the condition that reduces the urban waterlogging takes place, reduces the destruction to urban building facility simultaneously.)

1. The utility model provides a novel drainage system of hydraulic engineering channel which characterized in that: the system comprises a city drainage system and an auxiliary drainage system, wherein the auxiliary drainage system comprises a city drainage pipe network (1) arranged in a city and a peripheral drainage pipe network (2) arranged at the periphery of the city;

the urban drainage pipe network (1) comprises a central temporary water storage area (11) arranged in a city and a water body (12) arranged in the city, wherein an underground drainage pipe (13) is connected between the central temporary water storage area (11) and the water body (12);

peripheral water drainage pipe network (2) are including setting up in the peripheral interim water storage area (21) of city edge and setting up at peripheral reservoir (22), be provided with earth's surface drainage pipe (23) between peripheral interim water storage area (21) and reservoir (22).

2. The novel drainage system of hydraulic engineering channel of claim 1, characterized in that: the height of the central temporary water storage area (11) is lower than the height of the urban ground and higher than the height of the water body (12), and the central temporary water storage area (11) is arranged in the range of the distance of less than 500 meters.

3. The novel drainage system of hydraulic engineering channel of claim 1, characterized in that: underground drainage pipe (13) include drain pipe (14) and set up inlet valve (15) and outlet valve (16) at drain pipe (14) both ends, inlet valve (15) set up the marginal position in water district (11) temporarily at the center, outlet valve (16) set up on the bank protection at water (12) edge.

4. The novel drainage system of hydraulic engineering channel of claim 3, characterized in that: the temporary water storage area (11) comprises an inclined slope surface (111) and a retaining wall (112), wherein the height of the inclined slope surface (111) is gradually reduced towards one side of the water body (12), the retaining wall (112) is arranged around the inclined slope surface (111), and one side, far away from the water body (12), of the inclined slope surface (111) extends to the ground.

5. The novel drainage system of hydraulic engineering channel of claim 4, characterized in that: the water inlet valve (15) is arranged on a retaining wall (112) at one side, close to a water body, of the central temporary water storage area (11) and comprises a fixed frame (151) fixed on the retaining wall (112) and a movable door (152) connected to the fixed frame (151) in a sliding mode, and the movable door (152) can be used for closing and opening a port of the drainage pipe (14).

6. The novel drainage system of hydraulic engineering channel of claim 4, characterized in that: slope surface (111) include driving district (113) and parking district (114) of setting in driving district (113) both sides that set up along the incline direction, driving district (113) are provided with deceleration strip (115), parking district (114) are provided with fender car structure (116).

7. The novel drainage system of hydraulic engineering channel of claim 3, characterized in that: the water outlet valve (16) comprises a limiting frame (161) fixed on the water body slope protection and a flashboard (162) rotatably connected to the limiting frame (161), and the port of the drainage pipe (14) can be closed and opened by the flashboard (162).

8. The novel drainage system of hydraulic engineering channel of claim 1, characterized in that: the temporary water storage area (21) is arranged to be a water storage pool (211) with the bottom height lower than the urban ground height, a water retaining dam (212) is arranged on one side, close to the city, of the water storage pool (211), a water inlet is formed in the water retaining dam (212), and one side, far away from the city, of the water storage pool (211) is communicated with a surface drainage pipeline (23).

9. The novel drainage system of hydraulic engineering channel of claim 8, characterized in that: one end that ground surface drainage pipe (23) and pond (211) are connected is provided with overflow baffle (213), the top edge height of overflow baffle (213) is less than the lateral wall height of pond (211).

10. The novel drainage system of hydraulic engineering channel of claim 8, characterized in that: the bottom of the water storage pool (211) is provided with a planting soil layer (214) and green plants, and a sand fixing net is paved on the surface of the planting soil layer (214).

Technical Field

The application relates to the technical field of drainage engineering, in particular to a novel drainage system for a hydraulic engineering channel.

Background

The drainage system is a whole formed by combining facilities for collecting and conveying drainage, treating and discharging water quality and the like in a certain mode. The drainage ditch (pipe) is used for removing waterlogging, preventing water stain and preventing salt. The drainage system mainly comprises a field drainage adjusting net, various drainage ditches, a waterlogging storage lake, a drainage gate, a pumping and drainage pump station, a drainage and drainage area and the like. The excess water in the drainage area is firstly collected into a field drainage adjusting net, and then is discharged to the drainage area through drainage gates or pumping stations after being accumulated by drainage ditches at different levels or lakes.

The urban drainage system is a system special for discharging and cleaning rainwater, domestic sewage and industrial wastewater, and is widely applied to urban work; the existing urban drainage system comprises a wastewater concentration tank and a sedimentation tank, wherein the wastewater concentration tank is used for collecting rainwater, domestic sewage and industrial wastewater in a concentrated manner and carrying out sedimentation purification through the sedimentation tank. In recent years, with the increase of rainfall in summer in northern areas of China, the drainage capacity of urban drainage systems of some cities is difficult to meet the demand, and the condition of urban waterlogging frequently occurs, so that accumulated water stays in the cities for a long time, and urban operation and pedestrian traveling are seriously influenced.

Aiming at the related technologies, the inventor finds that if the force is increased to improve the urban drainage capacity, the engineering quantity is large, the improvement cost is high, the existing urban structure is damaged greatly, and the realization difficulty is high.

Disclosure of Invention

In order to improve urban drainage system's drainage ability, the condition that reduces urban waterlogging takes place, reduces the destruction to urban building facility simultaneously, and this application provides a novel drainage system of hydraulic engineering channel.

The application provides a novel drainage system of hydraulic engineering channel adopts following technical scheme:

a novel drainage system of a hydraulic engineering channel comprises a municipal drainage system and an auxiliary drainage system, wherein the auxiliary drainage system comprises a municipal drainage pipe network arranged in a city and a peripheral drainage pipe network arranged at the periphery of the city;

the urban drainage pipe network comprises a central temporary water storage area arranged in a city and a water body arranged in the city, and an underground drainage pipe is connected between the central temporary water storage area and the water body;

the peripheral drainage pipe network comprises a peripheral temporary water storage area arranged at the edge of a city and a reservoir arranged at the periphery, and a surface drainage pipeline is arranged between the peripheral temporary water storage area and the reservoir.

By adopting the technical scheme, the auxiliary drainage system is added on the basis of the original urban drainage system, so that the urban drainage system cannot be broken, when the urban precipitation is small, the urban drainage system can play a role in timely drainage, and when the precipitation is large, the two systems work simultaneously, so that the urban drainage efficiency is improved, and the urban waterlogging condition is reduced. The auxiliary drainage system is arranged into a city and a periphery, accumulated water on the surface of the city can be collected nearby in a centralized manner, and surface water close to a water body is collected to a central temporary water storage area and then is concentrated into the water body; surface water near the urban border zone is collected to the peripheral temporary water storage area and then discharged to the peripheral reservoir. The auxiliary drainage system makes full use of the urban water body and the peripheral reservoirs, effectively reduces the urban drainage pressure, and has small damage degree to urban buildings.

Optionally, the height of the central temporary water storage area is lower than the height of the urban ground and higher than the height of the water body, and the central temporary water storage area is arranged within a distance range of less than 500 meters.

By adopting the technical scheme, the accumulated water on the surface of the ground can be conveniently concentrated to the central temporary water storage area, and the accumulated water in the central temporary water storage area can conveniently flow to the water body; the distance between the central temporary water storage area and the water body is smaller, the laying difficulty of the underground drainage pipeline is reduced, and the construction cost is reduced.

Optionally, underground drainage pipe includes the drain pipe and sets up inlet valve and the outlet valve door at the drain pipe both ends, inlet valve door sets up the marginal position in the water district temporarily in the center, the outlet valve door sets up on the bank protection at water edge.

Through adopting above-mentioned technical scheme, underground drainage pipe drain pipe is used for the transport of rainwater, avoids the rainwater to the stratum infiltration, and the setting of inlet valve can make things convenient for displacement and the drainage speed of the interim water storage district of control center, and the setting of outlet valve then can prevent that the water in the water body from flowing back to the interim water storage district of center.

Optionally, the temporary central water storage area comprises an inclined slope surface and a retaining wall, wherein the height of the inclined slope surface is gradually reduced towards one side of the water body, the retaining wall is arranged around the inclined slope surface, and one side, far away from the water body, of the inclined slope surface extends to the ground.

Through adopting above-mentioned technical scheme, the slope surface is set to in the interim district of depositing water in center, makes things convenient for the inflow and the gathering of surface water, guides the flow direction of surface water, and the barricade around the slope surface can keep off ponding outward flow alone.

Optionally, the inlet valve sets up on the water retaining wall of one side that the district is close to the water is temporarily deposited in center, including fixed frame and the dodge gate of sliding connection on fixed frame fixed on the barricade, the dodge gate can seal and open the drain pipe port.

Through adopting above-mentioned technical scheme, the barricade height that the district is close to water one side is deposited temporarily in the center is the biggest, makes things convenient for laying of drain pipe, and inlet valve is more easy to assemble, and inlet valve adopts the structure of fixed frame and dodge gate, and inlet valve is opened in convenient operation.

Optionally, the slope surface comprises a driving area arranged along the slope direction and parking areas arranged on two sides of the driving area, the driving area is provided with a deceleration strip, and the parking areas are provided with car stopping structures.

By adopting the technical scheme, the central temporary water storage area is divided into a parking area and a driving area, the central temporary water storage area can be used as a parking place in a time period without rain, the parking pressure in a city can be relieved, the central temporary water storage area can be used as a rainwater temporary gathering area in a rainy season, the urban drainage pressure can be relieved, the central temporary water storage area has two purposes, and urban land resources are fully utilized; the slope surface is arranged to facilitate the driving of the vehicle, the speed of the vehicle in a driving area can be reduced through the speed bump, accidents caused by too fast speed of the vehicle are avoided, the vehicle stopping structure can block the parked vehicle, and the accidents caused by the fact that the vehicle is along the slope surface are prevented.

Optionally, the outlet valve includes the spacing frame of fixing on the water bank protection and rotates the flashboard of connecting on spacing frame, the flashboard can seal and open the drain pipe port.

Through adopting above-mentioned technical scheme, outlet valve adopts the mode of rotating to open, can utilize the impact force of rivers, opens the flashboard, and need not artificially go control, can make personnel keep away from the water in rainy season, avoids taking place danger.

Optionally, the temporary water storage area is set as a water storage pool with the bottom height lower than the ground height of the city, a water retaining dam is arranged on one side of the water storage pool close to the city, a water inlet is formed in the water retaining dam, and one side of the water storage pool far away from the city is communicated with the surface drainage pipeline.

Through adopting above-mentioned technical scheme, peripheral temporary water storage area sets up to the reservoir, makes things convenient for surface water to collect, and the setting of manger plate dam then can prevent to deposit the ponding in the reservoir to the city backward flow, makes ponding can flow to the reservoir through surface drainage pipe.

Optionally, an overflow baffle is arranged at one end of the ground surface drainage pipeline connected with the water storage tank, and the height of the upper edge of the overflow baffle is lower than that of the side wall of the water storage tank.

Through adopting above-mentioned technical scheme, set up the overflow baffle between reservoir and the earth's surface drainage pipe, when ponding in the reservoir is more, can overflow the overflow baffle and enter into and discharge in the earth's surface drainage pipe, also can prevent that external ponding from passing through earth's surface drainage pipe backward flow.

Optionally, the bottom of the water storage pool is provided with a planting soil layer and green plants, and a sand fixing net is laid on the surface of the planting soil layer.

By adopting the technical scheme, the planting soil layer and the green plants arranged at the bottom of the water storage tank can play a role in greening, and the surrounding land is fully utilized; when the rainwater is less, the rainwater is used as green land, and when the rainwater is more, the rainwater is used for temporarily storing; the sand fixation net can play the role of fixing the green plant layer and prevent the green plant layer from being washed away by rainwater.

In summary, the present application includes at least one of the following beneficial technical effects:

1. this application increases supplementary drainage system on original urban drainage system's basis, can not lead to the fact broken meeting to urban drainage system, and when the urban precipitation is few, urban drainage system can play the effect of in time drainage, and when the precipitation is great, then two systems simultaneous workings improve the drainage efficiency in city, reduce the emergence of the urban waterlogging condition.

2. The auxiliary drainage system is arranged into a city and a periphery, accumulated water on the surface of the city can be collected nearby in a centralized manner, and surface water close to a water body is collected to a central temporary water storage area and then is concentrated into the water body; surface water near the urban border zone is collected to the peripheral temporary water storage area and then discharged to the peripheral reservoir. The auxiliary drainage system makes full use of the urban water body and the peripheral reservoirs, effectively reduces the urban drainage pressure, and has small damage degree to urban buildings.

3. The central temporary water storage area is divided into a parking area and a driving area, the central temporary water storage area can be used as a parking place in a non-rainy time period, the parking pressure in cities can be relieved, the central temporary water storage area can be used as a temporary rainwater gathering area in rainy seasons, the urban drainage pressure can be relieved, the central temporary water storage area has two purposes, and urban land resources are fully utilized; the slope surface is arranged to facilitate the driving of the vehicle, the speed of the vehicle in a driving area can be reduced through the speed bump, accidents caused by too fast speed of the vehicle are avoided, the vehicle stopping structure can block the parked vehicle, and the accidents caused by the fact that the vehicle is along the slope surface are prevented.

4. The planting soil layer and the green plants arranged at the bottom of the water storage tank can play a role in greening, and the surrounding land is fully utilized; when the rainwater is less, the rainwater is used as green land, and when the rainwater is more, the rainwater is used for temporarily storing; the sand fixation net can play the role of fixing the green plant layer and prevent the green plant layer from being washed away by rainwater.

Drawings

Fig. 1 is a schematic structural diagram of an auxiliary drainage system according to an embodiment of the present application.

Fig. 2 is a schematic longitudinal sectional structure of a municipal drainage pipe network in the embodiment of the application.

Fig. 3 is a schematic plan view of a central temporary water storage area in the embodiment of the present application.

Fig. 4 is a schematic longitudinal sectional view of a peripheral drainage pipe network according to an embodiment of the present application.

Fig. 5 is a schematic plan view of a peripheral drainage network according to an embodiment of the present invention.

Description of reference numerals: 1. a municipal drainage pipe network; 11. a central temporary water storage area; 111. an inclined slope surface; 112. retaining walls; 113. a driving area; 114. a parking area; 115. a speed bump; 116. a vehicle stopping structure; 12. a body of water; 13. an underground drainage pipeline; 14. a drain pipe; 15. a water inlet valve; 151. a fixing frame; 152. a movable door; 16. a water outlet valve; 161. a limiting frame; 162. a shutter plate; 2. a peripheral drainage pipe network; 21. a peripheral temporary water storage area; 211. a water storage pool; 212. retaining water in a dam; 213. an overflow baffle; 214. planting a soil layer; 22. a reservoir; 23. and (4) draining a pipeline on the ground.

Detailed Description

The present application is described in further detail below with reference to figures 1-5.

The embodiment of the application discloses novel drainage system of hydraulic engineering channel. Referring to fig. 1, the drainage system comprises a city drainage system and an auxiliary drainage system, namely, the auxiliary drainage system is added on the basis of the original city drainage system of a city so as to reduce or not modify the city drainage system. Wherein, supplementary drainage system includes municipal drainage pipe network 1 and peripheral drainage pipe network 2 two parts, and municipal drainage pipe network 1 sets up in the city, and peripheral drainage pipe network 2 then sets up in city and peripheral juncture, and when municipal drainage system can not satisfy the drainage demand, municipal drainage pipe network 1 and peripheral drainage pipe network 2 played the effect of supplementary drainage with regard to nearly principle, can get rid of ponding fast, reduce the emergence of the urban waterlogging condition.

The municipal drainage network 1 comprises a central temporary water storage area 11, a water body 12 in the city and an underground drainage pipeline 13 for connecting the central temporary water storage area 11 and the water body 12. The internal temporary water storage area 11 is a low-lying area in a city, the height of the internal temporary water storage area is lower than the height of the ground nearby, the central temporary water storage area 11 is within a range of less than 500 meters away from the water body 12 during site selection so as to reduce the construction length of the underground drainage pipeline 13, and the central temporary water storage area 11 is higher than the water body 12 so as to be convenient for draining water into the water body 12. The water body 12 may be a stationary water body such as a natural lake or an artificial lake in a city, or may be a flowing water body such as a river passing through a city, and in this embodiment, the water body 12 is a river passing through a city and the central temporary water storage area 11 is arranged at multiple points along the river. The central temporary water storage 11 temporarily stores rainwater which cannot be discharged timely on the urban ground, and discharges the rainwater into the water body 12 through the underground drainage pipe 13 for centralized treatment.

The peripheral drainage pipe network 2 comprises a peripheral temporary water storage area 21, a reservoir 22 positioned in the peripheral field and a ground surface drainage pipe 23 connecting the peripheral temporary water storage area 21 and the reservoir 22. The peripheral temporary water storage area 21 is a low-lying area at the edge of the city, and the height of the low-lying area is also lower than the height of the nearby ground, and a ground surface drainage pipeline 23 is dug on the ground surface. The peripheral temporary water storage area 21 temporarily stores the urban accumulated water near the urban marginal zone and discharges the urban accumulated water to a water reservoir 22 in the field through a surface water discharge pipeline 23.

Referring to fig. 2 and 3, the central temporary water storage area 11 includes an inclined slope 111 gradually decreasing in height toward one side of the water body 12, the depth of the lowest portion of the inclined slope 111 is 1.5 m, one side of the inclined slope 111, which is far away from the water body 12, extends to the ground, so that accumulated water can flow in conveniently, the remaining three sides of the inclined slope 111 are provided with retaining walls 112, and the height of the retaining walls 112 protruding from the ground is set to be 0.5 m.

In order to fully utilize land resources in cities and reduce waste, the central temporary water storage area 11 may be set as a parking place, the inclined slope 111 includes a driving area 113 arranged along an inclined direction and parking areas 114 arranged at two sides of the driving area 113, the driving area 113 is used for driving vehicles in and out along the inclined direction of the inclined slope 111, and the parking areas 114 are used for parking vehicles perpendicular to the inclined direction of the inclined slope 111. In order to improve the driving and parking safety in the central temporary water storage area 11, the driving area 113 is provided with a plurality of speed reducing belts 115, and the parking area 114 is provided with a plurality of car stopping structures 116, wherein the car stopping structures 116 in this embodiment are car stopping rods fixed on the ground. In the time period without raining, the central temporary water storage area 11 can be used as a parking place, so that the parking pressure in the city can be relieved, the central temporary water storage area can be used as a rainwater temporary gathering area in rainy seasons, the urban drainage pressure can be relieved, and urban land resources are fully utilized.

Referring to fig. 2, the underground drainage pipeline 13 includes a drainage pipe 14, and an inlet valve 15 and an outlet valve 15 disposed at both ends of the drainage pipe 14, and it should be noted that a plurality of underground drainage pipelines 13 may be disposed between the same central temporary water storage 11 and the water body 12. The water discharge pipe 14 is a cement pipe with the diameter of 1 meter, can be horizontally laid, and can also be gradually laid towards the direction of the water body 12 in a height reducing mode, so that drainage is facilitated.

The water inlet valve 15 is arranged at the edge position of the central temporary water storage area 11, specifically, the water inlet valve 15 is arranged on a retaining wall 112 at one side of the central temporary water storage area 11 close to a water body 12, the water inlet valve 15 comprises a fixed frame 151 fixed on the retaining wall 112 and a movable door 152 connected to the fixed frame 151 in a sliding mode, the fixed frame is made of three sections of channel steel welded into a U-shaped frame, the opening of the frame faces upwards, the whole body is fixed on the retaining wall 112 through anchor bolts, the openings of the three sections of channel steel face towards the inner side of the frame, the movable door 152 is a rectangular steel plate door, a handle is arranged at the upper edge, the movable door 152 is inserted into a sliding groove formed by the three sections of channel steel in a sliding mode from the upper opening of the fixed frame 151, the port of the drain pipe 14 can be closed and opened by pulling the movable door 152 up and down, when water needs to be drained, the movable door 152 is directly pulled out, and the purpose of maximum water drainage is achieved.

The outlet valve 16 sets up on the slope protection wall body at water 12 edge, outlet valve 16 is including fixing spacing frame 161 on the water bank protection and rotating the flashboard 162 of connecting on spacing frame 161, the bank protection is the inclined plane bank protection in this embodiment, spacing frame 161 sets up the rectangle metal framework of fixing on the inclined plane bank protection, the length of a side is greater than the diameter of drain pipe 14, flashboard 162 sets up the metal sheet to the rectangle, its downside passes through the axis of rotation and rotates the connection on the downside frame of spacing frame 161, rotate flashboard 162 and can seal and open the port of drain pipe 14. When the drain pipe 14 is not needed for draining, the gate plate 162 is attached to the surface of the limit frame 161, and the port of the drain pipe 14 is closed by the gravity of the gate plate 162; when accumulated water in the central temporary water storage area 11 is more and needs to be discharged, the water inlet valve 15 is opened, the accumulated water flows into the water discharge pipe 14, the impact force of the water flow can be utilized to impact the gate plate 162, the gate plate 162 is automatically rotated and opened, and the accumulated water is discharged into the water body 12 and flows away along with the river.

In another embodiment of the present application, the water body 12 is a lake, because the water body 12 cannot flow and has a limited ability to digest urban ponding, a water pumping pipeline can be added between the lake and the reservoir 22 in the field, and a water pump is added on the pipeline to pump out a part of the water in the lake to the reservoir 22.

Referring to fig. 4 and 5, the temporary water storage area 21 is a water storage tank 211 with a bottom height lower than the urban ground height, a retaining dam 212 is arranged on one side of the water storage tank 211 close to the city, the retaining dam 212 is 0.6 m high, cement mortar is coated on the surface of the retaining dam 212 and can be used as a seat for pedestrians, and a plurality of water inlets are formed in the retaining dam 212 to facilitate accumulated water in the city to enter the water storage tank 211. The ground surface drainage pipeline 23 is arranged on one side, far away from the city, of the water storage tank 211, the overflow baffle 213 is arranged at one end, connected with the water storage tank 211, of the ground surface drainage pipeline 23, the overflow baffle 213 is embedded in the side wall and the bottom of the water storage tank 211, the height of the upper edge of the overflow baffle 213 is lower than that of the side wall of the water storage tank 211, when accumulated water in the water storage tank 211 is large, the accumulated water can overflow the overflow baffle 213 and enter the ground surface drainage pipeline 23 to be drained, and the accumulated water outside can be prevented from flowing back to the water storage tank 211 through the ground surface drainage pipeline 23.

In order to fully utilize the land resources around the city, a planting soil layer 214 is paved at the bottom of the water storage pool 211, green plants are planted on the surface layer of the planting soil layer 214, a sand fixing net is paved on the surface of the planting soil layer 214 in order to reduce the soil loss in the planting soil layer 214, and simultaneously, sediment carried by accumulated water can be deposited in the water storage pool 211, so that the planting soil layer 214 is supplemented.

The implementation principle of the novel drainage system of the hydraulic engineering channel in the embodiment of the application is as follows: the auxiliary drainage system is added on the basis of the original urban drainage system, so that the two systems work simultaneously, the urban drainage efficiency is improved, and the urban waterlogging condition is reduced. The auxiliary drainage system is arranged into a city and a periphery, accumulated water on the surface of the city can be collected nearby in a centralized manner, surface water close to a water body 12 is collected to a central temporary water storage area 11, then is concentrated into the water body 12 through an underground drainage pipeline 13, and is discharged by the water body 12; the surface water close to the edge zone of the city is collected to the peripheral temporary water storage area 21 and then is discharged into the reservoir 22 in the field through the surface water discharge pipeline 23 to flow away, the auxiliary water discharge system fully utilizes the water body 12 of the city and the reservoir 22 in the peripheral field, and the water discharge pressure of the city is effectively reduced.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.