CN104005470B - Gutter inlet structure with sewage stopping function and diversion function - Google Patents

Abstract

The invention relates to the technical field of rainwater treatment on urban roads, in particular to a rainwater outlet structure in an urban road rainwater treatment system, in particular to a rainwater outlet structure with the functions of sewage interception and diversion. The gully structure includes curbs, water inlets, rainwater wells and overflow wells, and the water inlets include horizontal water inlets and vertical water inlets; adjustment water outlets, The first overflow and the second overflow. The invention increases the flow capacity of the rainwater outlet, which can improve the rainwater drainage capacity of urban roads; can effectively remove the particulate matter in the initial rainwater runoff; can discharge the rainwater runoff in different periods, and can also effectively control the runoff pollution and pollution of the initial rainwater Regulating, storing and purifying; the gully structure of the present invention integrates the gully, curb and overflow, and can realize the functions of drainage, sewage interception and flow diversion at the same time, and occupies a small area, which is convenient for modular production and processing, and convenient Construction and maintenance management.

Description

A rainwater outlet structure with functions of sewage interception and flow diversion

technical field

The invention relates to the technical field of urban road rainwater treatment, in particular to a gully structure in an urban road rainwater treatment system, in particular to a gully structure with the functions of intercepting sewage and diverting flow.

Background technique

my country is in a critical period of building a well-off society in an all-round way, with unprecedented speed and scale. Roads play a pivotal role in urban planning and construction. Under the background of rapid urbanization, the impermeable surface area of roads continues to increase, and rainwater cannot infiltrate, resulting in increased surface rainwater runoff. At present, the proportion of my country's urban roads to construction land is generally 10-15%, and some foreign cities even exceed 30-40%. Therefore, in order to coordinate the contradiction between people and the environment in urban development, how to grasp the increasing relationship between roads and the urban environment, and properly deal with the interference and impact of road construction on the environment and water resources, etc., has become a problem worthy of serious attention. major issues.

At present, the road drainage design in my country's urban areas is still dominated by pipeline drainage, and in some suburbs or urban-rural junctions is dominated by ditch drainage. The general idea of rainwater is still reflected in the word "drainage". However, the acceleration of urbanization has made the disadvantages of traditional urban road drainage increasingly obvious. This kind of road drainage system with simple discharge as a single method and goal has exposed the following main problems:

1. The pressure of road flood drainage is high: in the process of urban expansion, a large amount of natural ground is gradually replaced by the hardened underlying surface including roads, and the hardening rate of the surrounding areas of the road is also increasing; the increase of impermeable area leads to the increase of urban comprehensive runoff coefficient , the rainstorm confluence is rapid, the runoff volume and runoff peak value are doubled, and the road drainage system is often responsible for the drainage task of the surrounding catchment surface, so the drainage pressure of the road will inevitably increase, the risk of flooding will increase, and the road safety factor will also decrease; China The annual rainy season in many cities causes huge losses and adverse impacts due to road floods, such as the road flood disaster in Jinan in 2007, the floods in Anhui, Chongqing and other places, and the serious waterlogging of many roads and overpasses in Beijing in recent years, which caused huge economic losses. Loss or even loss of people's life and property;

2. Serious road surface runoff pollution: road surface runoff pollution is the main source of urban surface runoff pollution, and urban surface runoff pollution is the second largest source of surface pollution after agricultural pollution; roads that account for about 20% of urban water catchment are harmful to receiving Suspended solids in water and hydrocarbon pollution contribute 50% and 30% respectively; about 60% of river and 50% of lake pollution in the United States is related to non-point source pollution. In cities that have achieved secondary treatment, the annual load of BOD in water bodies is about 40%-80% comes from rainwater runoff; the road pollutes the surrounding water bodies very seriously; in addition to heavy metals, hydrocarbons and other pollutants that are harmful to the environment, the rainwater runoff on the road surface also contains oil and other pollution caused by vehicle operation wastes discarded by pedestrians, debris and pollutants washed from courtyards and other open areas onto streets, etc., will eventually migrate to the water environment under the action of rainwater washing and scouring, and cause great harm to these waters ; Where there are ecologically sensitive protected areas and important water source protected areas, the potential threats of road pollutants to biodiversity and water quality need to be taken more seriously;

3. Serious loss of rainwater resources: China is a country with relatively poor water resources, and the annual water shortage in cities reaches 6 billion cubic meters; a series of serious problems have also arisen due to overexploitation of groundwater and lack of timely replenishment; with economic development With the acceleration of urbanization and the increasing water demand in cities, people will face more serious water shortage problems; in sharp contrast, the rainwater on the road and surrounding areas flows away from the urban rainwater pipe network in vain, which not only wastes A large amount of precious rainwater resources have also overwhelmed the urban drainage network, sewage treatment plants and water environment; according to rough statistics many years ago, by 2010, the total amount of rainwater in China's cities will reach 11 billion cubic meters, and the utilization of rainwater in cities in China The rate is less than 10%. With the development of the city, the area of impermeable roads increases, and the amount of urban rainwater loss will continue to increase significantly;

4. Serious damage to the ecological environment: my country's urban road construction is in a stage of rapid development, and the total mileage of expressways has exceeded 3.14 million kilometers, ranking second in the world, second only to the United States; Environmental interference and destruction, such as the increase of urban heat island effect, the occupation and destruction of land resources, vegetation destruction, air, noise, soil, water pollution, soil erosion, biodiversity reduction and the impact on the quality of life of residents along the line and the natural and cultural The impact of landscape value; at the same time, the increase of ground hardening rate makes the replenishment of groundwater by rainwater blocked, which in turn affects the urban water circulation system.

The traditional drainage of urban roads in my country mainly passes through storm water outlets, and rainwater outlets often have reduced flow capacity due to improper design or maintenance, resulting in water accumulation or waterlogging on urban roads.

Contents of the invention

The technical problem to be solved by the present invention is to provide a rainwater outlet with the advantages of reducing the flow capacity of the rainwater outlet in the prior art, resulting in water accumulation or waterlogging on urban roads, and the inability to remove pollutants in the initial rainwater runoff. The rainwater outlet structure with sewage interception and diversion functions.

The technical solution adopted by the present invention to solve the technical problem is: a stormwater outlet structure with the functions of sewage interception and flow diversion, including curbstones, water inlets, rainwater wells and overflow wells, and the curbstones are arranged between the roadway and the green belt In between, the rainwater well and the overflow well are respectively located on both sides of the curb and are separated by a partition wall, the rainwater well is set under the road surface of the carriageway, and the overflow well is set under the ground of the green belt, and it is characterized in that: The water inlet includes a horizontal water inlet and a vertical water inlet. Both the horizontal water inlet and the vertical water inlet are connected to the rainwater well. Set on the side wall on the side of the roadway on the curb; the top of the overflow well is open, and the regulating water outlet, the first overflow port and the second overflow are set on the partition wall between the rainwater well and the overflow well. The outlet, the regulating water outlet connects the rainwater well and the overflow well, the first overflow is higher than the ground of the green belt and lower than the top opening of the overflow well, the second overflow is higher than the top opening of the overflow well and is located The top opening of the overflow well is above the sides.

Further, the first rainwater grate is arranged obliquely on the horizontal water inlet, and its edge on the side of the roadway is higher than the edge on the side of the curb.

Further, the height of the adjusted water outlet from the bottom of the rainwater well is not less than the pipe diameter of the water outlet.

Further, a second rainwater grate is arranged at the top opening of the overflow well.

Furthermore, the first rainwater grate is arranged along a direction extending parallel to the roadway, and the second rainwater grate is arranged along a direction perpendicular to the roadway.

Further, a sewage intercepting hanging basket is added in the rainwater well, the sewage intercepting hanging basket is located under the first rainwater grate, and the outer side of the sewage intercepting hanging basket is wrapped with a filter medium.

Further, an openable top cover is provided on the top of the curb, and an S-shaped pull button is provided at the front end of the top cover.

The present invention has the following beneficial effects due to the adoption of the above-mentioned technical scheme:

The rainwater outlet structure with sewage interception and diversion functions according to the present invention can increase the flow capacity of the rainwater outlet by arranging horizontal water inlets and vertical water inlets, and can improve the rainwater drainage capacity of urban roads; The basket can effectively remove the particulate matter in the initial rainwater runoff; by setting the first overflow port and the second overflow port, the rainwater runoff of different periods can be discharged respectively, combined with the sewage interception hanging basket and the green belt, it can also effectively control the initial rainwater Runoff pollution and regulation, storage and purification; at the same time, the gully structure of the present invention integrates the gully, the curb and the overflow, and can realize the functions of drainage, sewage interception and diversion at the same time, with a small footprint and convenient Modular production and processing are also convenient for construction and maintenance management.

Description of drawings

Fig. 1 is the layout top view of urban road of the present invention;

Figure 2 is a partially enlarged view of Figure 1;

Fig. 3 is A-A sectional view of Fig. 1;

Fig. 4 is the B-B sectional view of Fig. 1;

Fig. 5 is a three-dimensional schematic diagram of a gully structure according to the present invention;

Fig. 6 is a schematic perspective view of the other side of the gully structure of the present invention;

Fig. 7 is the structural representation of the dirt intercepting hanging basket of the present invention;

In the figure: 1, curbstone; 2, water inlet; 3, rain well; 4, overflow well; 5, first rain grate; 6, regulating water outlet; 7, first overflow; 8, second overflow Orifice; 9, second rainwater grate; 10, sewage intercepting hanging basket; 11, top cover; 21, horizontal water inlet; 22, vertical water inlet; 100, driveway; 101, green belt; 102, partition wall; 103, a water outlet; 104, a filter medium.

Detailed ways

The content of the present invention will be further described below in conjunction with the accompanying drawings.

As shown in Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5 and Fig. 6, a kind of gully structure with interception and diversion functions according to the present invention includes curb stone 1, water inlet 2, rainwater well 3 and the overflow well 4, the curb 1 is set between the roadway 100 and the green belt 101, the rainwater well 3 and the overflow well 4 are respectively located on both sides of the curb and separated by a partition wall 102. Wherein, the rainwater well 3 is set under the road surface of the carriageway 100 , and the overflow well 4 is set under the ground of the green belt 101 .

The water inlet 2 includes a horizontal water inlet 21 and a vertical water inlet 22, the horizontal water inlet 21 and the vertical water inlet 22 are all connected with the rainwater well 3, the horizontal water inlet 21 is arranged on the road surface of the carriageway 100, and the horizontal water inlet 21 The first rainwater grate 5 is arranged at the place, and the vertical water inlet 22 is arranged on the vertical wall on the side of the roadway 100 on the curb 1 . By setting the horizontal water inlet 21 and the vertical water inlet 22, the flow capacity of the rainwater outlet can be increased, thereby improving the rainwater drainage capacity of urban roads; and the first rainwater grate 5 can intercept the floating and suspended matter in the rainwater runoff.

The top of the overflow well 4 is open, and on the partition wall 102 between the rainwater well 3 and the overflow well 4, an adjustment water outlet 6, a first overflow opening 7 and a second overflow opening 8 are set up, and the adjustment water outlet 6 The rainwater well 3 and the overflow well 4 are connected, the first overflow port 7 is higher than the ground of the green belt 101 and lower than the top opening of the overflow well 4, and the second overflow port 8 is higher than the top opening of the overflow well 4 and Located above the sides of the top opening of the overflow well 4. Thus the water level rises due to the water accumulation speed in the rainwater well 3 is faster, when the water level of the rainwater well 3 surpassed the first overflow port 7, the rainwater runoff then directly discharged into the green belt 101 by the first overflow port 7; When the rainwater runoff in the green belt 101 exceeds its regulation and storage capacity, the rainwater runoff flows into the overflow well 4 through the top opening of the overflow well 4; when the water level of the rainwater well 3 exceeds the second overflow port 8, the rainwater runoff then The rainwater is discharged into the overflow well 4 by flowing into the top opening of the overflow well 4 through the second overflow port 8 . In FIGS. 3 and 6 , it can be clearly seen that the overflow well 4 is also provided with a water outlet 103 , and the rainwater in the overflow well 3 is discharged into the rainwater well in the green belt 101 through the water outlet 103 .

As shown in FIG. 5 , the first rainwater grate 5 is arranged obliquely on the horizontal water inlet 21 , and its edge on the side of the carriageway 100 is higher than the edge on the side of the curb 1 . This can make the rainwater on the roadway 100 flow into the water inlet quickly, preventing the road from accumulating.

In order to make the rainwater in the rainwater well 3 flow into the overflow well 4 at a lower flow rate, ensure that the rainwater in the rainwater well 3 flows into the green belt 101 through the first overflow port 7 first, and the adjustment water outlet 6 is far from the bottom of the rainwater well 3 The height of the water outlet is not less than the pipe diameter of the water outlet 103, so that the drainage rate of the water outlet 6 is far smaller than the inflow rate of the water inlet 2, thereby playing a role in regulating.

Further, a second rainwater grate 9 is provided at the top opening of the overflow well 4 . This further intercepts floating and suspended matter in stormwater runoff. In FIG. 2 , the first rainwater grate 5 is arranged along a direction parallel to the extension of the roadway 100 , and the second rainwater grate 9 is arranged along a direction perpendicular to the extension of the roadway 100 .

As shown in Figure 3 and Figure 7, a sewage intercepting hanging basket 10 is added in the rainwater well, the sewage intercepting hanging basket 10 is located below the first rainwater grate 5, and the outside of the sewage intercepting hanging basket 10 is wrapped with a filter medium 104 . In this way, the particulate matter in the initial rainwater runoff can be effectively intercepted, and the rainwater runoff can be purified. When the initial rainwater flow rate is small, the rainwater first enters the sewage intercepting hanging basket 10 to remove particulate matter in the rainwater runoff.

In the present invention, an openable top cover 11 is provided on the top of the curb 1 , and an S-shaped pull button is provided at the front end of the top cover 11 . The top cover 11 is buckled on the curb 1 at ordinary times, and when the inside needs to be cleaned, the top cover 11 can be opened manually to carry out operations, which is convenient for construction and maintenance management.

The above content has specifically described a rainwater outlet structure with sewage interception and diversion functions according to the present invention, and will be explained in conjunction with the accompanying drawings, but the present invention is not limited by the specific implementation content described above, so all according to this Any improvements, equivalent modifications and replacements made to the technical gist of the invention belong to the protection scope of the present invention.

Claims (5)

1. one kind has the rain inlet structure cutting dirty and diverter function, comprise road kerb, water inlet, catch-basin and overflow well, road kerb is arranged between runway and greenbelt, catch-basin and overflow well lay respectively at the both sides of road kerb and are separated by partition wall, catch-basin is arranged on below the road surface of runway, overflow well is arranged on greenbelt below ground, it is characterized in that: described water inlet comprises horizontal water inflow mouth and vertical water inlet, horizontal water inflow mouth is all communicated with catch-basin with vertical water inlet, horizontal water inflow mouth is arranged on runway road surface, horizontal water inflow mouth place is provided with the first rain perforaled strainer, vertical water inlet be arranged on road kerb is positioned at runway side wall on, the open top of described overflow well, partition wall between catch-basin and overflow well is offered and adjusts the mouth of a river, the first overfall and the second overfall, adjust the mouth of a river and be communicated with catch-basin and overflow well, first overfall higher than greenbelt ground and lower than the open top of overflow well, the second overfall higher than overflow well open top and above the open-topped side being positioned at overflow well, described first rain perforaled strainer is inclined on horizontal water inflow mouth, and its edge being positioned at runway side is higher than the edge being positioned at road kerb side, the described height adjusted bottom the distance catch-basin of the mouth of a river is not less than the caliber of delivery port.

2. according to claim 1 have the rain inlet structure cutting dirty and diverter function, it is characterized in that: arrange the second rain perforaled strainer at the top open part of described overflow well.

3. according to claim 2 have the rain inlet structure cutting dirty and diverter function, it is characterized in that: described first rain perforaled strainer is arranged along the direction being parallel to runway extension, and described second rain perforaled strainer is arranged along the direction extended perpendicular to runway.

4. according to claim 1 have the rain inlet structure cutting dirty and diverter function, and it is characterized in that: set up Prefabricated combined septic tank in described catch-basin, described Prefabricated combined septic tank is positioned at the below of the first rain perforaled strainer, and the outside of described Prefabricated combined septic tank is enclosed with filter medium.

5. according to claim 1 have the rain inlet structure cutting dirty and diverter function, it is characterized in that: the top of described road kerb is provided with the top cover that can open, and what the front end of described top cover was provided with a S shape pulls button.