CN112095749A - A class inlet for stom water is abandoned in initial stage for sponge city construction - Google Patents

Abstract

The invention discloses an initial abandoned rainwater outlet for sponge city construction. The lower part of the rainwater well is provided with an initial rainwater outlet pipe, and the rainwater well is provided with a self-floating up-type rainwater outlet sealing device. The device is made of lightweight and high-durability materials with a density lower than that of water. When it floats up to the flat grate gutter, the flat grate gutter is blocked; the grate gutter is set on the upper side of the rain well, and the outside of the vertical grate gutter is concave green space or biological Retention facilities, after the rainwater enters the rainwater well, the self-floating rising rainwater inlet sealing device floats up until the flat grate rainwater inlet is blocked, the rainwater stops entering the rainwater well, and enters the sunken green space or bioretention facility through the vertical grate rainwater inlet. The device can effectively solve the problems of high initial rainwater pollution when road rainwater needs to be discharged into concave green space or bioretention facilities and other source emission reduction facilities in sponge city construction, which may easily lead to plant death and difficult maintenance in green space.

Description

A kind of initial abandoned drainage gully for sponge city construction

technical field

The invention relates to the field of sponge city construction, in particular to the design of a rainwater gully in which road rainwater is directly discharged into a green belt, in particular to an initial abandoned drainage gully for sponge city construction.

Background technique

In recent years, with the strong support of the national and local governments, the construction of sponge cities has been rapidly promoted. As an important measure of new urbanization, the construction of sponge city advocates the emission reduction of rainwater at the source, and realizes the source control, consumption and utilization of rainwater through the "seepage, storage, stagnation and net use and drainage" of source facilities. The area where the stagnation and stagnation function can be realized the largest. The road system needs to ensure the safety of vehicles and the stability and durability of the road structure, so the storage and stagnation of rainwater is limited. in the sponge facility. However, in the early stage of the road system, the content of pollutants such as soil and garbage is high, and it is directly discharged into the green space, causing the accumulation of garbage in the green space and the death of vegetation. Therefore, in the actual construction, the green space management department requires the road system to discharge the initial rainwater and then drain the rainwater. Enter the green space system for infiltration, storage and purification. Therefore, it is very necessary to adopt a kind of initial rainwater waste drainage gully with low cost, good durability and easy maintenance in the construction of sponge city.

SUMMARY OF THE INVENTION

The purpose of the present invention is mainly to provide a kind of initial abandoned rainwater outlet for sponge city construction, which can effectively control the abandoned flow of rainwater in the construction of sponge city, and effectively solve the serious pollutants and plants caused by the direct discharge of road rainwater into the green space system. death and other issues, effectively promoting the system construction of sponge cities.

In order to achieve the above-mentioned purpose, the technical scheme of the present invention is as follows: a kind of initial abandoned rainwater inlet for sponge city construction, comprising a rainwater well, a flat grate rainwater inlet arranged on the top of the rainwater well, and it is characterized in that the lower part of the rainwater well is provided with In the initial stage, the rainwater outlet pipe and the rainwater well are equipped with a self-floating and ascending rainwater inlet sealing device. The self-floating and rising rainwater inlet sealing device is made of lightweight and high-durability materials with a density lower than that of water. Plug and level the grate gutter; set up grate gullies on the upper side of the rainwater well, and the outside of the vertical grate grate is a concave green space or a bioretention facility. After the grate gully, the rainwater stops entering the rainwater well, and enters the sunken green space or bioretention facility through the vertical grate gully.

Further, the self-floating rising rainwater inlet sealing device includes two rectangular blocks that are parallel up and down, and the two rectangular blocks are connected by vertical rods; the rainwater well is provided with chutes on both sides of the well wall along the longitudinal section direction. , the depth of the chute is about 2~5cm, and its width is consistent with the width of the lower rectangular block of the self-floating up-type rainwater inlet sealing device.

Further, the rainwater well is provided with chute on both sides of the well wall along the longitudinal section direction, the depth of the chute is 2~5cm, and its width is consistent with the width of the lower rectangular block of the self-floating up-type rainwater inlet sealing device, and the self-floating up The lower rectangular block of the gully sealing device is embedded in the chute and can move up and down along the chute.

Further, the area of the water inlet hole of the flat grating rainwater inlet is less than or equal to the upper rectangular block of the self-floating rising rainwater inlet sealing device, and after being closely combined with the floating rectangular block, the rainwater can be prevented from continuing to fall into the rainwater well, and the level The elevation of the grate gully is 1-1.5cm lower than the roadside.

Further, the width of the lower rectangular block of the self-floating up-type rainwater inlet sealing device is smaller than the width of the rainwater well by 5-8 cm in the cross-sectional direction, so as to facilitate the rainwater to fall into the bottom of the well; the upper rectangular block is smaller than the rainwater in the longitudinal section length. Well 10~15cm and greater than or equal to the area of the water inlet of the rainwater inlet of the flat grate, the width on the cross section is the same as the width of the rainwater well, it can ensure that the rainwater falling into the well can flow into the bottom smoothly when it is at the bottom of the well, and it can ensure the airtight flat grate after it floats up. Intake of rainwater. Self-floating gully seals can be lifted out of the well for maintenance.

Further, the height of the water inlet of the vertical grate gully is 1-1.5 cm higher than the surface of the flat grate gully and flush with the road surface. After the flat grate gully is sealed, the rainwater enters the sunken green space or the bioretention facility through the vertical grate gully.

Further, the height of the initial rainwater outlet pipe is 5~15cm from the bottom of the well, and is connected to the municipal rainwater pipe, which can precipitate solids in the initial rainwater, and the initial rainwater outlet pipe is located at the entrance on the well wall of the rainwater well A slow-release device made of permeable concrete with a permeability coefficient of 0.001~0.01mm/s or other durable permeable materials is set to prevent the self-floating up-type rainwater inlet sealing device from being closed tightly due to the rapid discharge of rainwater in the well.

The device has a simple structure, can ensure that the initial rainwater is effectively discarded according to the designed discarding flow, and can ensure that the rainwater entering the rainwater well is filtered and discharged. The device can use the existing finished rainwater well and level grate gully. The gully sealing device can open the water collection capacity of the flat grate gully through its own gravity sinking, and close the water collection of the flat grate gully through buoyancy. The flat layout realizes that the rainwater can smoothly fall into the bottom of the rainwater well without electric drive, simple maintenance and durable performance. The chute on the rainwater well ensures the stability of the rainwater inlet sealing device during the floating and sinking process. The slow-release device at the water outlet can not only ensure the discharge of rainwater entering the rainwater well, but also ensure the stability of the volume of rainwater in the well, thereby ensuring the sealing device. effectiveness. Therefore, the initial abandoned rainwater outlet provided by the present invention can realize the precise control of the initial abandoned rainwater volume, improve the effective connection between the road system and the green space system in the construction of the sponge city, and help the construction of the sponge city and the construction of ecological civilization.

Description of drawings

The following structural drawings will further describe the present invention in detail.

FIG. 1 is a general layout diagram of the present invention.

Figure 2 is a top view of the present invention.

Fig. 3 is a cross-sectional view of the present invention, namely, AA in the direction of the longitudinal section.

Fig. 4 is a cross-sectional view of the present invention, that is, a BB sectional view.

Reference signs: 1—flat grating rainwater inlet, 2—rainwater well, 3—self-floating and ascending rainwater inlet sealing device, 4—initial rainwater outlet pipe, 5—slow release device, 6—vertical grate rainwater inlet, 7—sealing Device floating track, 8—standing edge stone, 31—rectangular block on the upper side of the self-floating rising rainwater inlet sealing device, 32—rectangular block on the upper side of the self-floating rising rainwater inlet sealing device, 33—vertical block of the self-floating rising rainwater inlet sealing device to the rod.

Detailed ways

The present invention will be described in detail below with reference to the accompanying drawings.

As shown in the figure, an initial abandoned rainwater inlet for sponge city construction includes a rainwater well 2, a flat grating rainwater inlet 1, a self-floating rising rainwater inlet sealing device 3, a sealing device floating track 7, and a vertical grating rainwater inlet 6. The initial rainwater outlet pipe 4 and the slow-release device 5 are characterized in that:

The self-floating up-type gully sealing device 3 is made of low-density weather-resistant material whose density is lower than that of water, and consists of a rectangular block 31 on the upper side of the self-floating up-type gully sealing device that is parallel up and down, and the upper side of the self-floating up-type gully sealing device. The side rectangular block 32 and the vertical rod 33 of the self-floating and ascending rainwater gully sealing device connected to the upper rectangular block 31 of the self-floating and ascending rainwater gully sealing device and the upper rectangular block 32 of the self-floating and ascending rainwater gully sealing device are composed. After the rainwater enters the rainwater well, it floats up until the upper flat plate closes the flat grating rainwater inlet 1, and then the rainwater stops entering the rainwater well 2.

After the flat grate gully 1 is sealed, the rainwater enters the sunken green space or bioretention facility through the vertical grate gully 6 .

The rainwater entering the rainwater well 2 is discharged into the municipal pipe network through the initial rainwater outlet pipe 4, wherein the initial rainwater outlet pipe 4 is equipped with a slow-release device 5, and the slow-release device 5 is permeable concrete with a water permeability coefficient of 0.001~0.01mm/s or other Made of durable water-permeable material.

As shown in Figure 3, the rainwater well 2 is provided with chutes on both sides of the well wall along the longitudinal section direction, the depth of the chute is about 2~5cm, and its width is consistent with the width of the lower rectangular block of the self-floating up-type rainwater inlet sealing device , the chute forms the floating track 7 of the sealing device, and the self-floating rising rainwater inlet sealing device 3 can move up and down along the floating track 7 of the sealing device, and the initial rainwater outlet pipe 4 is set at 5~15cm from the bottom of the rainwater well 2, The volume of the rainwater well is calculated and determined according to the confluence area of the rainwater outlet and the amount of abandoned rainwater at the initial stage.

As shown in FIG. 3 , the area of the water inlet hole of the flat grate gully 1 is less than or equal to the rectangular block 31 on the upper side of the self-floating and ascending rainwater gully sealing device, and is the same as the upper rectangular block 31 of the self-floating and ascending rainwater gully sealing device after the floating. After the blocks 31 are tightly combined, rainwater can be prevented from continuing to fall into the rainwater well, and the level of the flat grating rainwater inlet 1 is 1-1.5 cm lower than the roadside.

As shown in FIG. 3 , the self-floating gully sealing device 3 is made of lightweight and high-durability materials with a density lower than that of water, preferably HDPE, LDPE and other materials. Connect to the rod. The length of the lower rectangular block along the longitudinal section is the same as the longitudinal width of the rainwater well, and it is embedded in its chute. The width of the lower rectangular block in the cross-sectional direction is 5-8cm smaller than the width of the rainwater well, which is convenient for rainwater to fall into the bottom of the well. The upper rectangular block is 10~15cm shorter than the rainwater well in the longitudinal section length and greater than or equal to the area of the water inlet of the flat grating rainwater inlet. The rainwater flows smoothly into the bottom, and after it floats up, it can ensure the water intake of the airtight grate rainwater inlet. Self-floating gully seals can be lifted out of the well for maintenance.

As shown in Figure 1, the height of the water inlet of the vertical grate is 1~1.5cm higher than the surface of the flat grate and flush with the road surface. After the flat grate is sealed, the rainwater enters the sunken green space or bioretention through the vertical grate facility.

As shown in Figure 4, the height of the initial rainwater outlet pipe is 5~15cm from the bottom of the well and is connected to the municipal rainwater pipeline, which can precipitate solids in the initial rainwater, and the water permeability coefficient is set at the inlet on the well wall of the rainwater well The slow-release device made of permeable concrete of 0.001~0.01mm/s or other durable permeable materials can prevent the self-floating rainwater outlet sealing device from being closed tightly due to the rapid discharge of rainwater in the well.

Claims (6)

1. a kind of initial abandonment rainwater outlet for sponge city construction, comprises a rainwater well, the flat grating rainwater inlet that is arranged on the top of the rainwater well, it is characterized in that the lower part of the rainwater well is provided with an initial rainwater outlet pipe, and the rainwater well is provided with. Self-floating rising rainwater inlet sealing device, the self-floating rising rainwater inlet sealing device is made of lightweight and high-durability materials with a density lower than that of water. A grate rainwater inlet is set up at the top, and the outside of the vertical grate rainwater inlet is a concave green space or a bioretention facility. After the rainwater enters the rainwater well, the self-floating rising rainwater inlet sealing device floats up until the flat grate rainwater inlet is blocked, and the rainwater stops entering the rainwater well. , and enter the sunken green space or bioretention facility through the vertical grate rainwater inlet. 2. a kind of initial abandoned gully for sponge city construction as claimed in claim 1, is characterized in that described self-floating rising type gully sealing device comprises two rectangular blocks that are parallel up and down, and between the two rectangular blocks. Vertical rods are used for connection between the rainwater wells; the rainwater well is provided with chutes on both sides of the well wall along the longitudinal section direction, the depth of the chute is about 2~5cm, and its width is consistent with the width of the lower rectangular block of the self-floating upward rainwater inlet sealing device . 3. a kind of initial abandonment rainwater outlet for sponge city construction as claimed in claim 2, is characterized in that described rainwater well is provided with chute on both sides of well wall along longitudinal section direction, chute depth 2～5cm, Its width is the same as the width of the lower rectangular block of the self-floating up gully sealing device. The lower rectangular block of the self-floating up gully sealing device is embedded in the chute and can move up and down along the chute. 4. a kind of initial abandoned gully for sponge city construction as claimed in claim 1 is characterized in that the area of the water inlet hole of the flat grating gully is less than or equal to the upper side of the self-floating rising gully sealing device Rectangular block, and closely combined with the floating rectangular block can prevent rainwater from continuing to fall into the rainwater well, and the elevation of the flat grating rainwater inlet is 1-1.5cm lower than the roadside. 5. The initial abandoned gully for sponge city construction according to claim 1, wherein the width of the lower rectangular block of the self-floating gully sealing device is smaller than that of rainwater in the cross-sectional direction. The width of the well is 5~8cm, which is convenient for rainwater to fall into the bottom of the well; the length of the upper rectangular block is 10~15cm smaller than the length of the rainwater well and greater than or equal to the area of the water inlet of the flat grate rainwater inlet, and the width on the cross section is the same as the width of the rainwater well , it can ensure that the rainwater falling into the well flows smoothly into the bottom when it is at the bottom of the well, and after it floats up, it can ensure the water intake of the closed flat grating rainwater inlet. 6. a kind of initial stage abandoned flow rainwater outlet for sponge city construction as claimed in claim 5, is characterized in that, described initial stage rainwater outlet pipe is 5～15cm from well bottom height, and is connected with municipal rainwater pipeline, its The solids in the initial rainwater can be precipitated, and the initial rainwater outlet pipe is located at the inlet of the rainwater well wall with a slow-release device made of permeable concrete or durable permeable materials with a water permeability coefficient of 0.001~0.01mm/s.

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