CN212477985U

CN212477985U - Rainwater outlet infiltration system

Info

Publication number: CN212477985U
Application number: CN202020932331.XU
Authority: CN
Inventors: 赵军伟
Original assignee: PowerChina Guiyang Engineering Corp Ltd
Current assignee: PowerChina Guiyang Engineering Corp Ltd
Priority date: 2020-05-28
Filing date: 2020-05-28
Publication date: 2021-02-05
Anticipated expiration: 2030-05-28

Abstract

The utility model discloses a rainwater outlet infiltration system, including burying underground rainwater discharge port, rainwater discharge port's front and terminal intercommunication of rainwater discharge house steward, its back closes on river course or water, and rainwater discharge port left and right both sides respectively are connected with 1 infiltration pipe, and the infiltration pipe is provided with the infiltration pipe trompil of gathering on one's body, and rainwater discharge port back bottom is equipped with the overflow weir, and overflow weir top switches on with external environment. The system is a sponge city technical measure which does not affect the surrounding environment and landscape, occupies small floor area and is convenient for maintenance and management, and can realize the functions of runoff rainwater total reduction, regulation and storage and initial rainwater purification.

Description

Rainwater outlet infiltration system

Technical Field

The utility model relates to a rainwater outlet infiltration system specifically is applied to rainwater drainage system and sponge urban engineering field.

Background

China now faces the problems of water resource shortage, water safety, water environment pollution, water ecological deterioration and the like, and the concept of 'sponge city' is provided by the country. The sponge city construction improves the functions of infiltration, regulation, storage, purification, utilization and discharge of radial rainwater through a plurality of technologies such as infiltration, stagnation, storage, purification, utilization and discharge. At present, urban rainwater is discharged into water bodies such as river channels and the like through municipal pipelines, and runoff rainwater is directly discharged to enable the runoff quantity of the urban river channels or the water bodies to be increased rapidly, so that flood or waterlogging disasters occur, and shallow underground water resources are gradually exhausted. In addition, the initial rainwater has high pollutant content, so the initial rainwater is often an important pollution source for urban water, and if the initial rainwater is directly discharged into the water, the urban water environment is polluted. The conventional treatment measures include that a regulation and storage pond is built at a main urban rainwater outlet, runoff rainwater is collected and regulated, initial rainwater is treated and then discharged, sponge urban technical measures such as a rainwater regulation and storage pond and a bioretention pond are adopted, and reduction of rainwater runoff and purification function of the initial rainwater are achieved to a certain extent. However, the sponge city technical measures also have many problems, such as large engineering floor area, large investment, difficult maintenance and management, conflict with the surrounding landscape environment and the like.

Disclosure of Invention

An object of the utility model is to provide a rainwater outlet infiltration system. The system is a sponge city technical measure which does not affect the surrounding environment and landscape, occupies small floor area and is convenient for maintenance and management, and can realize the functions of runoff rainwater total reduction, regulation and storage and initial rainwater purification.

The technical scheme of the utility model: the utility model provides a rainwater outlet infiltration system, is including burying underground rainwater discharge port, the front and the terminal intercommunication of rainwater drainage house steward of rainwater discharge port, and its back closes on river course or water, and rainwater discharge port left and right both sides respectively are connected with 1 infiltration pipe, and the infiltration pipe is provided with the infiltration pipe trompil of gathering on one's body, and rainwater discharge port back bottom is equipped with the overflow weir, and the overflow weir top switches on with external environment.

In the rainwater drainage outlet infiltration system, a splayed drainage channel is arranged between the overflow weir and the river channel or the water body, and a pebble buffer zone is laid at the bottom of the splayed drainage channel.

In the rainwater drainage outlet infiltration system, the pipe body of the infiltration pipe is wrapped by the coarse-particle-size gravel layer, and the outside of the coarse-particle-size gravel layer is provided with the fine-particle-size gravel layer.

In the rainwater drainage outlet infiltration system, the connecting end of the rainwater drainage main pipe, the permeation pipe and the rainwater drainage port is at a certain height from the bottom of the rainwater drainage port, so that a sludge settling tank is formed at the bottom of the rainwater drainage port.

In the rainwater drainage outlet infiltration system, 1 penetration pipe manhole is arranged on each penetration pipe at a certain distance.

In the rainwater outlet infiltration system, the connecting end of the permeation tube and the permeation tube manhole is at a certain height from the bottom of the permeation tube manhole, so that a mud sink is formed at the bottom of the permeation tube manhole.

In the rainwater outlet infiltration system, the pipe bottom of the rainwater outlet main pipe is higher than the pipe top of the permeation pipe, and the weir top of the overflow weir is higher than the pipe top of the permeation pipe.

The utility model has the advantages that: compared with the prior art, the utility model has the advantages of it is following:

1. the utility model arranges the penetration facilities at the tail end of the rainwater drainage system, and simultaneously adopts the method of burying the penetration pipe and the filter layer along the river course to dispersedly arrange the penetration facilities along the river course or the water body, so that the penetration facilities are not arranged in a centralized way, and the occupied area of the field is reduced;

2. most of the infiltration system is arranged underground, so that the infiltration system has little influence on buildings and landscapes above the ground, and the system components are all arranged in a shallow-buried manner, so that large-area excavation and arrangement of facilities are not needed, and the requirement on a construction site is reduced;

3. the penetration capacity is greatly improved by the dispersed arrangement of the penetration pipes, the outlet of the rainwater drainage main pipe is provided with the water outlet, the back of the water outlet is provided with the overflow weir, the interception of initial runoff rainwater is realized, meanwhile, the height of the overflow weir is almost equal to that of the top of the penetration pipe, the infiltration of the intercepted rainwater can be carried out by utilizing the penetration pipes to the maximum extent, and the control of the total runoff rainwater and the interception treatment of the initial runoff rainwater are realized;

4. the sand filter layers on the two sides are arranged on the outer sides of the permeation tubes, so that impurities and pollutants in the intercepted rainwater can be filtered and treated to a certain degree, the rainwater permeated into the soil can supplement underground water, and the water content of the surrounding underground water is improved;

5. the infiltration pipe is provided with the maintenance well, so that the infiltration pipe can be maintained regularly, meanwhile, the bottom of the maintenance well is provided with the sludge settling tank, larger particles of impurities in rainwater are settled, the blockage of an infiltration pipeline is avoided, and the bottom of the rainwater discharge port is provided with the settling tank, so that the impurities with larger particle density can be settled and intercepted;

6. the splayed drainage channel is arranged on the outer side of the gutter inlet overflow weir, the pebble buffer area is arranged at the bottom of the channel, the rainwater flow rate can be slowed down when the rainwater runoff is large, and the erosion damage of rainwater to the water environment and the riverbed is reduced.

Drawings

FIG. 1 is a schematic structural view of the present invention;

3 FIG. 3 2 3 is 3 a 3 schematic 3 sectional 3 view 3 taken 3 along 3 line 3 A 3- 3 A 3 of 3 FIG. 3 1 3; 3

FIG. 3 is a schematic sectional view taken along line B-B of FIG. 1;

FIG. 4 is a schematic view of the installation structure of the permeate tube;

FIG. 5 is a schematic view of the construction of a permeate tube.

Reference numerals: 1-rainwater discharge port, 2-rainwater discharge header pipe, 3-pebble buffer zone, 4-permeation pipe, 5-permeation pipe manhole, 6-overflow weir, 7-sludge settling tank, 8-coarse particle size gravel layer, 9-fine particle size gravel layer and 10-permeation pipe opening.

Detailed Description

The following description is made with reference to the accompanying drawings and examples, but not to be construed as limiting the invention.

The embodiment of the utility model provides a: a rainwater drainage outlet infiltration system is shown in attached figures 1-5 and comprises a rainwater drainage port 1 buried underground, wherein the rainwater drainage port 1 is of a reinforced concrete rectangular structure, the front of the rainwater drainage port 1 is communicated with the tail end of a rainwater drainage main pipe 2, the back of the rainwater drainage port 1 is close to a river channel or a water body, the left side and the right side of the rainwater drainage port 1 are respectively connected with 1 penetration pipe 4, penetration pipe openings 10 are densely distributed on the pipe body of the penetration pipe 4, the penetration pipe 4 can be made of reinforced concrete or cast iron, steel parts and the like, flexible connection is adopted, a certain upward gradient is formed by the penetration pipe 4 to the outer side, and therefore emptying pipelines and deposited silt are conveniently drained. An overflow weir 6 is arranged at the bottom of the back of the rainwater outlet 1, and the upper part of the overflow weir 6 is communicated with the external environment.

The system can be used for the reconstruction of a newly-built rainwater drainage system or the existing rainwater drainage port, and is mainly used for performing infiltration by utilizing the penetration pipe 4 after the rainwater drainage port 1 intercepts the radial rainwater. In the use, the runoff rainwater in the rainwater drainage header pipe 2 flows into the rainwater drainage port 1, then is shunted through the permeation tube 4, and the intercepted rainwater comprises initial rainwater with great pollution and permeates underground through the permeation tube open pores 10 on the permeation tube 4. When the runoff rainwater is gradually increased and exceeds the infiltration capacity of the infiltration pipe 4, the excess rainwater is overflowed outwards through the top of the overflow weir 6 and is discharged to the river channel or the water body adjacent to the back. Overflow weir 6 and rainwater drainage house steward 2 set up respectively at rainwater discharge port 1's both ends, can realize holding back radial flow rainwater through rainwater discharge port 1 like this, can be preferentially shunted radial flow rainwater to infiltration pipe 4 simultaneously.

The infiltration pipe 4 is arranged along the water bank line, avoids concentrating on a certain point and oozes down, can improve entire system's infiltration water yield, has the great effect to the pollution treatment ability that improves sponge urban rainwater runoff total amount control rate and initial stage rainwater. The rainwater discharge port 1 can discharge rainwater to an external water body and distribute runoff rainwater to the rainwater penetration pipe 4 in the whole system, and meanwhile, the rainwater discharge port also has the function of intercepting initial rainwater of rainwater.

A splayed drainage channel is arranged between the overflow weir 6 and the river channel or the water body, the water flow speed of overflow runoff rainwater entering the river channel or the water body is reduced, a pebble buffer zone 3 is laid at the bottom of the splayed drainage channel, and scouring and disturbance of water flow on sludge at the bottom of river channels, lakes and the like are further reduced.

The pipe body of the penetration pipe 4 is wrapped by the coarse-grain-size gravel layer 8, the average grain diameter of gravel is larger than that of the holes 10 of the penetration pipe, a fine-grain-size gravel layer 9 is arranged outside the coarse-grain-size gravel layer 8, and the grain diameter of gravel is 2-4 times that of gravel. Further filtering impurities and reducing the influence on the quality of the underground water. Clogging of the permeate tube 4 is avoided by preventing sand of fine particle size from entering the permeate tube 4 through the permeate tube openings 10.

The connecting ends of the rainwater discharging main pipe 2, the permeation pipe 4 and the rainwater discharging port 1 are at a certain height from the bottom of the rainwater discharging port 1, so that a sludge settling groove 7 is formed at the bottom of the rainwater discharging port 1, and the sludge settling groove 7 can settle and intercept impurities with high particle density.

1 permeation tube manhole 5 is arranged on each permeation tube 4 at a certain distance, and the permeation tubes 4 are conveniently maintained regularly.

The link of infiltration pipe 4 and infiltration pipe manhole 5 is apart from infiltration pipe manhole 5 bottom take the altitude for 5 bottoms of infiltration pipe manhole form silt deposit groove 7, and this silt deposit groove 7 can have carried out the sediment to the impurity of great granule in the rainwater, avoids blockking up infiltration pipe 4.

The height of the bottom of the rainwater discharge main pipe 2 is higher than that of the top of the permeation pipe 4, and the top of the overflow weir 6 is slightly higher than that of the top of the permeation pipe 4. Therefore, the interception of radial rainwater can be realized at the initial stage of the rainwater outlet 1, and the infiltration capacity of the infiltration pipe 4 can be maximally utilized. When the inflow amount of rainwater is larger than the downward seepage amount of the seepage pipe 4, the excessive rainwater is discharged through the overflow weir 6.

Claims

1. The utility model provides a rainwater outlet infiltration system which characterized in that: including burying underground rainwater discharge port (1), the front and the terminal intercommunication of rainwater main sewer (2) of rainwater discharge port (1), its back closes on river course or water, and rainwater discharge port (1) left and right both sides respectively are connected with 1 infiltration pipe (4), and it has infiltration pipe trompil (10) to gather on infiltration pipe (4) pipe shaft, and rainwater discharge port (1) back bottom is equipped with overflow weir (6), and overflow weir (6) top switches on with external environment.

2. The stormwater drainage infiltration system of claim 1, wherein: a splayed drainage channel is arranged between the overflow weir (6) and the river channel or the water body, and a pebble buffer zone (3) is laid at the bottom of the splayed drainage channel.

3. The stormwater drainage infiltration system of claim 1, wherein: the pipe body of the permeation pipe (4) is wrapped by the coarse-grain-size gravel layer (8), and a fine-grain-size sand stone layer (9) is arranged outside the coarse-grain-size gravel layer (8).

4. The stormwater drainage infiltration system of claim 1, wherein: the connecting ends of the rainwater discharge main pipe (2), the permeation pipe (4) and the rainwater discharge port (1) are at a certain height from the bottom of the rainwater discharge port (1), so that a sludge settling tank (7) is formed at the bottom of the rainwater discharge port (1).

5. The stormwater drainage infiltration system of claim 1, wherein: 1 permeation tube maintenance well (5) is arranged on each permeation tube (4) at a certain distance.

6. The stormwater drainage infiltration system of claim 5, wherein: the connecting end of the permeation tube (4) and the permeation tube manhole (5) is at a certain height from the bottom of the permeation tube manhole (5), so that a mud sink (7) is formed at the bottom of the permeation tube manhole (5).

7. The stormwater drainage infiltration system of claim 1, wherein: the bottom of the rainwater drainage main pipe (2) is higher than the top of the permeation pipe (4), and the top of the overflow weir (6) is higher than the top of the permeation pipe (4).