Sponge city drainage collection system for railroad bed

Abstract

The utility model provides a sponge city drainage collecting system for a railway roadbed, which comprises an overflow grit chamber, a water storage recycling tank, a biological retention ditch arranged between a railway roadbed side slope and a railway isolation area, and a sinking greenbelt arranged at the railway roadbed side slope and the railway isolation area, the spraying device is used for spraying the sinking green land; a drainage ditch is arranged on one side of the bioretention ditch, a first overflow pipe is arranged on the upper portion of the bioretention ditch and communicated with the drainage ditch, a water inlet is formed in the lower portion of the overflow grit chamber, and the overflow grit chamber is connected with the stored water recycling tank through a second overflow pipe. And the spraying device is connected with the stored water recycling pool. The sponge city drainage function of the railway roadbed can be achieved, redundant rainwater can automatically overflow, the safety of green plants in a sinking area is improved, and the collected rainwater can be sprinkled and recycled for greening through the water storage recycling pool.

Description

Technical Field

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

[0002] A sponge city refers to an urban construction designed in the form of a "sponge". When it rains, various underlying surfaces and storage facilities act as "sponges" to collect, store, infiltrate and purify water, thereby achieving good flexibility in adapting to environmental changes and responding to natural disasters.

[0003] Sponge city construction is often carried out in urban roads, building communities, urban water systems, green squares and other places. The sponge construction of urban roads is generally achieved by organizing the convergence and transfer of rainwater on the road surface, introducing rainwater into sunken green spaces, rainwater regulating pools and other regulation facilities for collection, storage, infiltration and water purification.

[0004] At present, the sponge city system for railway projects is not perfect, and sponge city construction is generally only carried out in railway stations. The sponge city construction of railway stations is only designed for the local part of the railway project. The railway project is a linear project, mainly composed of the roadbed, bridges, tunnels and station areas of the section. Therefore, the popularity of sponge city construction in railway projects is very low.

[0005] Ordinary rainwater collection and utilization systems can no longer meet the needs of railway engineering construction, and the railway subgrade is an important part of the railway section. Therefore, it is necessary to consider designing a sponge city rainwater collection and utilization system for the railway subgrade section, which can meet the relevant requirements of sponge cities, increase the sponge city penetration rate of railway projects, and realize the purification and reuse of sponge city rainwater. Utility Model Content

[0006] The purpose of the utility model is to provide a sponge urban drainage collection system for railway roadbed, which can at least solve some of the defects existing in the prior art.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A sponge city drainage collection system for railway roadbed, comprising an overflow grit chamber, a water storage and reuse tank, a biological retention ditch arranged between the railway roadbed slope and the railway isolation zone, a sunken green space arranged at the railway roadbed slope and the railway isolation zone, and a spraying device for watering the sunken green space; a drainage ditch is arranged on one side of the biological retention ditch, a first overflow pipe is arranged on the upper part of the biological retention ditch, the first overflow pipe is connected to the drainage ditch, a water inlet is arranged at the lower part of the overflow grit chamber, the overflow grit chamber and the water storage and reuse tank are connected by a second overflow pipe, and the spraying device is connected to the water storage and reuse tank.

[0009] Furthermore, the overflow grit chamber and the water storage and reuse tank are both arranged at the biological retention ditch.

[0010] Furthermore, the overflow sedimentation tank and the water storage and reuse tank are both provided with overflow holes, and the overflow holes are located above the lowest point of the surface of the biological retention ditch.

[0011] Furthermore, the water storage and reuse pool is connected to the drainage ditch through a third overflow pipe, and the third overflow pipe is located between the overflow hole of the water storage and reuse pool and the second overflow pipe.

[0012] Furthermore, a bioretention ditch is provided at the foot of the railway embankment slope and at the side of the railway isolation zone, and the drainage ditch is located between the two bioretention ditches.

[0013] Furthermore, the spraying device includes a reuse water pump, a reuse pipe network and a plurality of sprinkler nozzles. The reuse water pump is arranged in the water storage and reuse pool, the reuse pipe network is laid on the sunken green land, and the reuse pipe network is connected to the reuse water pump, and the sprinkler nozzle is connected to the reuse pipe network.

[0014] Furthermore, the above-mentioned sponge city drainage collection system for railway roadbed also includes an intelligent control cabinet and a rainwater sensor. A biological retention ditch liquid level device is arranged in the biological retention ditch, and a water storage and reuse pool liquid level device is arranged in the water storage and reuse pool. The rainwater sensor, the biological retention ditch liquid level device, the water storage and reuse pool liquid level device, and the spraying device are all connected to the intelligent control cabinet.

[0015] Furthermore, a perforated drainage pipe is buried in the biological retention ditch, and the perforated drainage pipe is connected to the overflow grit chamber.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] The sponge city drainage collection system for railway roadbed provided by the utility model utilizes the slope of the railway roadbed to make the rainwater of the railway roadbed flow into the biological retention ditch. After accumulation, infiltration and purification in the biological retention ditch, a part of it is discharged into the water storage and reuse pool. The spraying device can use the water in the water storage and reuse pool to sprinkle the sunken green space, and the other part can be discharged to the drainage ditch through the overflow pipe, and finally discharged to the nearby water system or the municipal rainwater pipe network. The utility model can not only realize the sponge city drainage function of the railway roadbed, but also automatically overflow the excess rainwater, improve the safety of the green plants in the sunken area, and can collect rainwater and reuse it for greening through the water storage and reuse pool.

[0018] The present invention will be described in further detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the sponge urban drainage collection system for railway roadbed of the utility model;

[0020] Figure 2 yes Figure 1 Schematic diagram of the middle AA section;

[0021] Figure 3 yes Figure 1 Schematic diagram of the middle BB section;

[0022] Figure 4 yes Figure 1 Schematic diagram of the CC section.

[0023] Explanation of the accompanying reference numerals: 1. Water storage and reuse pool; 2. Reuse water pump; 3. Drainage ditch; 4. Biological retention ditch; 5. Overflow sedimentation tank; 6. Sunken green space; 7. Reuse pipe network; 8. Sprinkler nozzle; 9. Second overflow pipe; 10. First overflow pipe; 11. Intelligent control cabinet; 12. Rainwater sensor; 13. Overflow hole; 14. Third overflow pipe. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, a conflicting connection or an integral connection. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features; in the description of the present utility model, unless otherwise specified, "multiple" and "several" mean two or more.

[0028] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, this embodiment provides a sponge city drainage collection system for railway roadbed, including an overflow grit chamber 5, a water storage and reuse pool 1, a biological retention ditch 4 arranged between the railway roadbed slope and the railway isolation zone, a sunken green space 6 arranged at the railway roadbed slope and the railway isolation zone, and a spraying device for watering the sunken green space 6; a drainage ditch 3 is arranged on one side of the biological retention ditch 4, a first overflow pipe 10 is arranged on the upper part of the biological retention ditch 4, and the first overflow pipe 10 is connected to the drainage ditch 3, a water inlet is arranged at the lower part of the overflow grit chamber 5, the overflow grit chamber 5 is connected to the water storage and reuse pool 1 through a second overflow pipe 9, and the spraying device is connected to the water storage and reuse pool 5. In this embodiment, rainwater from the railway embankment enters the bioretention ditch 4 through the railway embankment slope. After accumulation, infiltration and purification in the bioretention ditch 4, a part of the rainwater is discharged into the water storage and reuse pool 1 through the overflow sedimentation tank 5. The spraying device can use the water in the water storage and reuse pool 1 to sprinkle the sunken green space 6, and the other part can be discharged to the drainage ditch 3 through the overflow pipe, and finally discharged to the nearby water system or the municipal rainwater pipe network. The utility model can not only realize the sponge city drainage function of the railway embankment, but also automatically overflow the excess rainwater, improve the safety of green plants in the sunken area, and can collect rainwater for reuse in greening through the water storage and reuse pool.

[0029] Specifically, the overflow grit chamber 5 and the water storage and reuse tank 1 are both arranged at the biological retention ditch 4, so that the purified rainwater in the biological retention ditch 4 can be quickly discharged into the overflow grit chamber 5 and the water storage and reuse tank 1. Furthermore, an overflow port can be arranged on the side of the water storage and reuse tank 1, and the rainwater on the surface of the biological retention ditch 4 can also be discharged into the water storage and reuse tank 1 through the overflow port on the side of the water storage and reuse tank 1.

[0030] Furthermore, a perforated drainage pipe (not shown in the figure) is buried in the biological retention ditch 4, and the perforated drainage pipe is connected to the overflow grit tank 5. The upper part of the perforated pipe is a flower pipe to collect water, and the lower part of the perforated pipe is a solid pipe, which can discharge the collected water to the overflow grit tank 5 for sedimentation; optimally, the perforated pipe is slightly inclined downward in the direction of the overflow grit tank 5, so that the collected water is automatically discharged into the overflow grit tank 5.

[0031] Optionally, the overflow grit chamber 5 and the water storage and reuse tank 1 are both provided with an overflow hole 13, and the overflow hole 13 is located above the lowest point on the surface of the biological retention ditch 4. When the water volume in the overflow grit chamber 5 and the water storage and reuse tank 1 reaches a certain height, it can overflow and be discharged back into the biological retention ditch 4 through the overflow hole 13. Furthermore, the water storage and reuse tank 1 is connected to the drainage ditch 3 through a third overflow pipe 14, and the third overflow pipe 14 is located between the overflow hole 13 of the water storage and reuse tank 1 and the second overflow pipe 9. During the rainstorm and flood period, when the water volume in the water storage and reuse tank 1 reaches a specified elevation, the remaining rainwater can be discharged into the nearby water system or municipal rainwater pipe network through the drainage ditch 3 through the set third overflow pipe 14.

[0032] In some embodiments, a bioretention ditch 4 may be provided at the foot of the slope of the railway embankment and at the side of the railway isolation zone, and the drainage ditch 3 may be located between the two bioretention ditches 4. This arrangement may allow rainwater from the railway embankment and rainwater from the railway isolation zone to be discharged into the corresponding bioretention ditches 4 respectively, thereby improving the efficiency of rainwater drainage.

[0033] A further optimized implementation method, the sponge city drainage collection system for railway roadbed in this embodiment also includes an intelligent control cabinet 11 and a rainwater sensor 12, a biological retention ditch liquid level device (not shown in the figure) is arranged in the biological retention ditch 4, and a water storage and reuse pool liquid level device (not shown in the figure) is arranged in the water storage and reuse pool 1, and the rainwater sensor 12, the biological retention ditch liquid level device, the water storage and reuse pool liquid level device, and the spraying device are all connected to the intelligent control cabinet 11. Among them, the intelligent control cabinet 11 and the rainwater sensor 12 are both arranged in the railway isolation area. The rainwater sensor 12 is used to monitor the rainfall in real time. The bioretention ditch liquid level meter can monitor the liquid level of the bioretention ditch 4 in real time, and the water storage and reuse pool liquid level meter can monitor the liquid level of the water storage and reuse pool 1 in real time; the rainwater sensor 12, the bioretention ditch liquid level meter and the water storage and reuse pool liquid level meter can transmit the real-time monitoring data to the intelligent control cabinet 11, and the intelligent control cabinet 11 processes the corresponding data and turns on the spraying device to sprinkle the sunken green space 6 or turns off the spraying device according to the processing results, so as to realize the automatic use of water storage and reuse water in the sponge city of the railway roadbed.

[0034] Optionally, the spraying device includes a reuse water pump 2, a reuse pipe network 7 and a plurality of sprinkler nozzles 8, the reuse water pump 2 is arranged in the water storage reuse pool 1, the reuse pipe network 7 is laid on the sunken green space 6, and the reuse pipe network 7 is connected to the reuse water pump 2, a plurality of sprinkler nozzles 8 are connected to the reuse pipe network 7, and a plurality of sprinkler nozzles 8 are distributed at intervals on the sunken green space 6 to ensure that the sprinkler range covers the entire sunken green space 6. Preferably, the reuse water pump 2 is connected to the intelligent control cabinet 11, and the reuse water pump 2 is controlled to be turned on or off by the intelligent control cabinet 11, so as to sprinkle or not sprinkle the sunken green space 6. Of course, the opening or closing of the spraying device can also be controlled manually.

[0035] The drainage reuse process of the sponge city drainage collection system for railway roadbed in this embodiment is as follows:

[0036] During the rainstorm and flood period, the rainwater from the railway embankment enters the biological retention ditch 4 and the overflow sedimentation tank 5 through the railway embankment slope, and overflows into the water storage and reuse pool 1. When the water storage and reuse pool reaches the specified elevation, the remaining rainwater is discharged into the nearby water system or municipal rainwater pipe network through the overflow pipe.

[0037] When the rain sensor 12 detects that there is no rain and the bioretention ditch liquid level meter detects that the bioretention ditch liquid level is low, the intelligent control cabinet 11 controls the reuse water pump 2 to open, and sprinkles the vegetation on the railway embankment slope and the sunken green space 6 in the railway isolation area through the reuse pipe network 7 and the sprinkler 8;

[0038] When the water level sensor of the water storage and reuse pool detects that the water level of the water storage and reuse pool 1 is too low, or the rain sensor 12 detects rain, or the bioretention ditch level sensor detects that the liquid level of the bioretention ditch 4 is high, the reuse water pump 2 is shut down through linkage control by the intelligent control cabinet 11.

[0039] The above examples are merely illustrative of the present invention and do not constitute a limitation on the protection scope of the present invention. All designs that are identical or similar to the present invention fall within the protection scope of the present invention.

Claims

1. A sponge urban drainage collection system for railway roadbed, characterized by: It includes an overflow grit chamber, a water storage and reuse tank, a biological retention ditch arranged between the railway embankment slope and the railway isolation zone, a sunken green space arranged at the railway embankment slope and the railway isolation zone, and a spraying device for watering the sunken green space; a drainage ditch is arranged on one side of the biological retention ditch, a first overflow pipe is arranged on the upper part of the biological retention ditch, the first overflow pipe is connected to the drainage ditch, a water inlet is arranged at the lower part of the overflow grit chamber, the overflow grit chamber and the water storage and reuse tank are connected by a second overflow pipe, and the spraying device is connected to the water storage and reuse tank.

2. The sponge urban drainage collection system for railway roadbed according to claim 1, characterized in that: The overflow sand settling tank and the water storage and reuse tank are both arranged at the biological retention ditch.

3. The sponge urban drainage collection system for railway roadbed according to claim 2, characterized in that: The overflow sedimentation tank and the water storage and reuse tank are both provided with overflow holes, and the overflow holes are located above the lowest point on the surface of the biological retention ditch.

4. The sponge urban drainage collection system for railway roadbed according to claim 3, characterized in that: The water storage and reuse pool is connected to the drainage ditch through a third overflow pipe, and the third overflow pipe is located between the overflow hole of the water storage and reuse pool and the second overflow pipe.

5. The sponge urban drainage collection system for railway roadbed according to claim 1, characterized in that: A bioretention ditch is respectively arranged at the foot of the railway embankment slope and the side of the railway isolation zone, and the drainage ditch is located between the two bioretention ditches.

6. The sponge urban drainage collection system for railway roadbed according to claim 1, characterized in that: The spraying device includes a reuse water pump, a reuse pipe network and a plurality of sprinkler nozzles. The reuse water pump is arranged in the water storage and reuse pool. The reuse pipe network is laid on the sunken green land. The reuse pipe network is connected to the reuse water pump, and the sprinkler nozzle is connected to the reuse pipe network.

7. The sponge urban drainage collection system for railway roadbed according to claim 1, characterized in that: It also includes an intelligent control cabinet and a rainwater sensor. A biological retention ditch liquid level device is provided in the biological retention ditch, and a water storage and reuse pool liquid level device is provided in the water storage and reuse pool. The rainwater sensor, the biological retention ditch liquid level device, the water storage and reuse pool liquid level device, and the spraying device are all connected to the intelligent control cabinet.

8. The sponge urban drainage collection system for railway roadbed according to claim 1, characterized in that: A perforated drainage pipe is buried in the biological retention ditch, and the perforated drainage pipe is connected to the overflow sand settling tank.

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