CN221218372U - Road side zoning drainage structure adopting sinking green land - Google Patents
Road side zoning drainage structure adopting sinking green land Download PDFInfo
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- CN221218372U CN221218372U CN202323087737.5U CN202323087737U CN221218372U CN 221218372 U CN221218372 U CN 221218372U CN 202323087737 U CN202323087737 U CN 202323087737U CN 221218372 U CN221218372 U CN 221218372U
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- green land
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- rainwater
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Abstract
本实用新型涉及排水工程技术领域，公开了一种采用下沉式绿地的道路侧分带排水结构，包括下沉式绿地本体、人行道和机动车道，下沉式绿地本体设置于人行道和机动车道之间；下沉式绿地本体内设置有雨水篦子，下沉式绿地本体的底部设置有排水管道系统。相较于现有技术，当降水量超过下沉式绿地的容量时，雨水经溢流口流入雨水篦子后溢流排到排水管道系统，从而降低发生洪涝灾害的可能性。
The utility model relates to the technical field of drainage engineering, and discloses a road side strip drainage structure using a sunken green space, comprising a sunken green space body, a sidewalk and a motor vehicle lane, wherein the sunken green space body is arranged between the sidewalk and the motor vehicle lane; a rainwater grate is arranged in the sunken green space body, and a drainage pipe system is arranged at the bottom of the sunken green space body. Compared with the prior art, when the precipitation exceeds the capacity of the sunken green space, the rainwater flows into the rainwater grate through the overflow port and then overflows and is discharged into the drainage pipe system, thereby reducing the possibility of flood disasters.
Description
Technical Field
The utility model belongs to the technical field of drainage engineering, and particularly relates to a road side zoning drainage structure adopting a sinking green land.
Background
With the development of urban areas in China, the emphasis degree of municipal drainage problems is becoming stronger, and the traditional municipal roads have defects such as drainage, water seepage, groundwater supply and the like, which are mainly expressed in the following two aspects:
(1) The planning is imperfect: the road planning fails to establish effective connection with the surrounding greenbelt, and rainwater cannot infiltrate into the surrounding greenbelt in time, so that the rainwater is difficult to supply groundwater, and rainwater resources are wasted.
(2) The design is not scientific: the elevation of traditional town road both sides land for will be higher than the elevation of road surface to concrete structural design is unreasonable, and when taking place the heavy rain weather, the rainwater can flow into the road by the road both sides, and the drainage pressure of road drainage system is big, and the water yield of partial region can obviously increase, and the rainwater can flow in towards the lower direction of relief, leads to this region to take place serious flood disasters.
Disclosure of utility model
The utility model provides a road side zoning drainage structure adopting a sinking green land, which is used for solving the problems in the background technology.
The road side zoning drainage structure comprises a sunk green land body, a pavement and a motor vehicle lane, wherein the sunk green land body is arranged between the pavement and the motor vehicle lane; the rainwater grate is arranged in the sinking green land body, a drainage pipeline system is arranged at the bottom of the sinking green land, and the rainwater grate is communicated with the drainage pipeline system.
Preferably, the soil-resistant green land soil-resistant material further comprises a haydite/organic matter covering layer, a planting soil layer, a middle sand filtering layer, a gravel drainage layer and a plain soil ramming layer, wherein the haydite/organic matter covering layer is arranged on the side part of the sinking green land body; the planting soil layer is arranged at the bottom of the haydite/organic matter covering layer; the middle sand filter layer is arranged at the bottom of the planting soil layer; the gravel drainage layer is arranged at the bottom of the middle sand filtering layer, and the plain soil ramming layer is arranged at the bottom of the gravel drainage layer.
Preferably, the rainwater grate is a three-dimensional turbine type rainwater grate.
Preferably, the soil compacting device further comprises an impermeable membrane, wherein the impermeable membrane is arranged between the soil compacting layer and the gravel drainage layer.
Preferably, the motor vehicle lane is provided with the trompil curb near the position of sinking green land body.
Preferably, a C10 cushion layer is arranged at the bottom of the sinking green land body, cement mortar building MU10 bricks are arranged at the side parts of the sinking green land body, well rings are arranged at the tops of the cement mortar building MU10 bricks, the well rings are sleeved at overflow ports of the rainwater grate, and the overflow ports are higher than the sinking green land body.
Preferably, the drainage pipeline system comprises a blind pipe and a rainwater overflow pipe, and the blind pipe is communicated with the rainwater grate; the rainwater overflow pipe is communicated with the blind pipe, and the rainwater overflow pipe is communicated with a preset rainwater pipe network.
Preferably, the ceramsite/organic matter coating layer is depressed by 10-20cm relative to the motor vehicle lane.
Preferably, the impermeable film is two-cloth-one film.
Preferably, the overflow port is 15-25cm higher than the sinking greenbelt body.
Compared with the prior art, the utility model has the beneficial effects that:
1. Compared with the prior art, the utility model is a new project in the aspect of comprehensive utilization of water resources, has good water-saving efficiency, greatly improves the permeability of rainwater, and can go deep into the ground from the surface in the process of flowing through the submerged green land so as to supplement the groundwater resources.
2. Compared with the prior art, the utility model can effectively reduce the non-point source pollution of roads, reduce the possibility that pollutants such as household garbage, heavy metals and the like flow into rivers and lakes along with the discharge of rainwater, and has good environmental and ecological benefits.
3. Compared with the prior art, the utility model optimizes the open-pore curb, the sinking green concave depth, the overflow port and the like, and can provide scientific support for the construction of sponge urban roads in future.
4. Compared with the prior art, when the precipitation exceeds the capacity of the sinking green land, rainwater flows into the rainwater grate through the overflow port and overflows and is discharged to the drainage pipeline system, so that the possibility of flood disasters is reduced.
Drawings
FIG. 1 is a schematic view of a road side belt drainage structure employing a sinking green land in an embodiment of the present utility model;
fig. 2 is a plan view of a road side belt drainage structure employing a sinking green land in an embodiment of the present utility model.
Reference numerals illustrate:
1. Sinking green land body; 2. sidewalk; 3. a motor vehicle lane; 4. open-pore curb; 5. cement mortar rubble; 6. sinking green land plants; 7. a rain grate; 8. a blind pipe; 9. an impermeable membrane; 10. a ceramsite/organic coating; 11. planting a soil layer; 12. a middle sand filter layer; 13. a gravel drainage layer; 14. ramming a plain soil layer; 15. a rainwater overflow pipe; 16. a well ring; 17. cement mortar is used for building MU10 bricks; 18. and C10 cushion layer.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model; all other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The utility model provides a road side zoning drainage structure adopting a sinking green land, which is used for solving the problems in the background technology.
Referring to fig. 1 and 2, a road side zoning drainage structure employing a sinking green land includes a sinking green land body 1, a pavement 2, a motor vehicle lane 3, a ceramsite/organic matter covering layer 10, a planting soil layer 11, a middle sand filtering layer 12, a gravel drainage layer 13 and a plain soil compacting layer 14. The sinking green land body 1 is arranged between the sidewalk 2 and the motor vehicle lane 3, a rainwater grate 7 is arranged in the sinking green land body 1, a drainage pipeline system is arranged at the bottom of the sinking green land, and the rainwater grate 7 is communicated with the drainage pipeline system. The haydite/organic matter overburden 10 sets up in the green body 1 lateral part of sinking, and planting soil layer 11 sets up in haydite/organic matter overburden 10 bottom, and well sand filter layer 12 sets up in planting soil layer 11 bottom, and gravel drainage layer 13 sets up in the bottom of well sand filter layer 12, and plain soil tamp layer 14 sets up in the bottom of gravel drainage layer 13. Wherein the ceramsite/organic matter coating layer 10 is sunk by 10-20cm relative to the motor vehicle lane 3.
Compared with the prior art, the utility model not only can reduce runoff and reduce urban flood disasters, but also can absorb the downflowing rainwater so as to increase the soil moisture content and reduce the irrigation water consumption of greenbelts, thereby supplementing groundwater resources; the rainwater can flow into the rainwater grate through the overflow port and then overflows and is discharged to the drainage pipeline system, so that the possibility of flood disasters is reduced.
The above-described region between the pavement 2 and the motor vehicle lane 3 is collectively referred to as a sunk green field in the present embodiment. In this embodiment, when the road gradient is not greater than 2%, the sinking green land longitudinal slope is equal to the road gradient, and when the road longitudinal slope is 2% -7%, the sinking green land adopts a stepped sinking green land.
In this embodiment, the top side of the planting soil layer 11 is planted with submerged green plants 6 to enhance the absorption capacity of the infiltration rainwater.
In this embodiment, a slope is provided between the planting soil layer 11 and the motor vehicle lane 3, and cement mortar broken stone 5 is provided on the slope for filtering rainwater.
Preferably, the rainwater grate 7 is a three-dimensional turbine type rainwater grate 7. The rainwater grate 7 is provided with a plurality of rainwater grates 7 which are arranged at intervals to enhance the drainage effect.
Preferably, the drainage structure further comprises an impermeable membrane 9, wherein the impermeable membrane 9 is formed by two layers of one membrane, and the impermeable membrane 9 is arranged between the plain soil ramming layer 14 and the gravel drainage layer 13.
Preferably, the motor vehicle lane 3 is provided with an open-pore curb 4 at a position close to the sinking green house body 1, so that rainwater of the motor vehicle lane 3 can be introduced into the sinking green house through the open-pore curb 4.
Wherein, as shown in fig. 1, the drainage pipeline system comprises a blind pipe 8 and a rainwater overflow pipe 15, and the blind pipe 8 is communicated with the rainwater grate 7; the rainwater overflow pipe 15 is communicated with the blind pipe 8, and the rainwater overflow pipe 15 is communicated with a preset rainwater pipe network. Specifically, the blind pipe 8 adopts a PE perforated seepage pipe, the pipe diameter is 150mm, the aperture ratio is 3%, the blind pipe 8 faces the rainwater overflow pipe 15 with a gradient of 1%, and two ends of the blind pipe 8 are plugged by PE plugs. The pipe diameter of the rainwater overflow pipe 15 is 300mm, and the overflowed rainwater is discharged into a rainwater pipe network at a gradient of 1%.
As shown in fig. 1, a C10 cushion layer 18 is disposed at the bottom of the sinking green land body 1, cement mortar blocks MU10 bricks 17 are disposed at the side of the sinking green land body 1, a well ring 16 is disposed at the top of the cement mortar blocks MU10 bricks 17, the well ring 16 is sleeved at an overflow port of the rainwater grate 7, and the overflow port is higher than the sinking green land body 1.
Specifically, the thickness of the C10 cushion 18 is 100mm.
Specifically, the compressive grade of the cement mortar laid MU10 brick 17 is M7.5.
Specifically, the overflow port is higher than the sinking green land body 115-25cm.
For the drainage structure of the present utility model, the following method for designing and calculating the drainage structure is provided:
(1) Sponge city index calculation
1) Water inflow calculation
Calculating the target regulation volume of the sinking green land (volumetric method):
Wherein: v is the design regulation quantity, and unit m 3;HS is the design rainfall quantity, and unit mm; Weighting the comprehensive rainfall runoff coefficient according to the land property; a is the area of the catchment area, in hm 2.
2) Osmotic volume calculation
The permeation quantity of this example was calculated according to darcy's law:
WP＝KJAsts
Wherein: w P is the permeation quantity, unit m 3; k is the average permeability coefficient, unit m/s; j is hydraulic ramp down, generally 1.0; a s is the effective permeation area, the unit m 2;ts is the permeation time, and t s takes on a value of 7200s.
(2) Drain opening calculation
1) Catchment area
Water collection area of each drain:
A＝L0L1
Wherein: a is the water collecting area of the water drain, and the unit m 2;L0 is the interval distance of the water drain, and the unit m; l 1 is the width of the single-sided road width, unit m.
2) Confluence time
Referring to highway drainage design Specification (JTG/T D, 33-2012), the roadway confluence time is calculated as follows:
Wherein: t is the confluence time, and the unit is min; m is the surface roughness coefficient, and the asphalt pavement is 0.013; l is the length of the confluence, L 2 is the longitudinal length of the road section, and the most adverse condition is that is, the interval distance of the water discharge ports, m; i is the gradient of the road and,I 1 is a road cross slope, and i 2 is a road longitudinal slope.
3) Design peak flow rate
The design peak flow Q max is calculated as follows:
Wherein: q max is the design peak flow, unit m 3/s; a is the catchment area, unit m 2; Taking 0.9 of the asphalt pavement as a runoff coefficient; q is the intensity of the design storm, and the unit is L/s.
The construction method of the utility model comprises the following steps:
1. And (3) measuring and lofting: before lofting, the measurer must fully understand the design drawing of the utility model, and find out the main axis and the main position and the geometric relationship between the parts according to the measurement principle from whole to part and from control to detail by taking the control network as a basis.
2. Excavating earth and stone: the sinking green land is excavated by a backhoe excavator, and the part, close to a rainwater pipeline (well) and other barriers, is manually excavated by manual cooperation and trimming. The excavated earthwork is transported to the outside of the groove edge by 2m for stacking. Under normal conditions, a 1:1 slope is adopted for the foundation trench. The topography is strictly arranged according to the design requirement, every 250mm thick is tamped mechanically or manually, so that collapse is avoided when watering is performed, and the topography is manually arranged by a spade according to the design elevation.
3. And (3) construction of an anti-seepage film: firstly, sundries on a paved surface are removed, the paved surface is ensured to be smooth, the welding width of two cloth films is not less than 10cm, on-site hot-melt welding is adopted, the impermeable film is lapped on the surface along the low direction, the film with the slope higher than the surface is lapped on the film at the low position, the welding process meets the requirements of drawing and specification, and no tensile force is allowed to bear within 2 hours after welding. The film laying mode is from bottom to top, and the two-cloth-one film should be kept in a loose state during laying so as to adapt to deformation in all aspects, ensure that the two-cloth-one film is intact, and check the two-cloth-one film before laying to repair damaged parts. The impermeable film is spread to the top of the slope, the length is enough (not less than 55 cm), and the impermeable film is neatly rolled to the top surface of the roadbed and backfilled with medium coarse sand for protection.
4. Open-cell curb installation: the kerbstone adopts local stone materials, is purchased from factories, and the size, the open pore and the opening of the kerbstone meet the design requirements.
5. Backfilling planting soil: the sinking green land does not simply reduce the elevation of the green land, but needs to improve the structural layer below the green land at the same time, so that the water retention and infiltration rate of the soil meet the requirements of plant growth and rainwater runoff storage and drainage purification. Soil is the basis for ensuring survival and growth of plants, and samples are taken from each soil point before construction, and an assay is performed. The soil in the planting area has good physical structure, the granular structure of soil is good, and the diameter of the planting soil blocks with the thickness of 300mm on the surface layer of the planting soil is not more than 20mm. Meanwhile, 20 percent of fine sand is doped in the planting soil, and the porosity is controlled to be 25-35 percent so as to ensure the long-term infiltration effect of the soil.
6. Plants and planting: the road sinking type green land should select the local common greening plants as much as possible, mainly including perennial plants; the selected plants should resist drought and short-term flooding, and the water-tolerant time should be more than 2d; the selected plants have strong purifying capacity and pollution resistance, and have higher nutrient salt removal rate, so that the submerged green land can stably run.
The implementation principle of the embodiment is as follows:
When the area where the utility model is located rains, the rainwater falling into the sidewalk flows into the sunk green land under the action of self gravity, the rainwater falling into the motor vehicle lane passes through the perforated curb, and is converged into the planting soil layer after uniform water distribution and filtration through cement mortar rubble, and the rainwater runoff is purified and accumulated by the infiltration and buffering of plants, soil and microorganism systems on the planting soil layer. When the precipitation exceeds the capacity of the sinking green land, the rainwater flows into the rainwater grate through the overflow port and overflows to the drainage pipeline system.
The above embodiments are not intended to limit the scope of the present utility model, so: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.
Claims (10)
1. The road side zoning drainage structure adopting the sinking green land is characterized by comprising a sinking green land body (1), a sidewalk (2) and a motor vehicle lane (3), wherein the sinking green land body (1) is arranged between the sidewalk (2) and the motor vehicle lane (3); the novel rain water draining device is characterized in that a rain water draining grid (7) is arranged in the sinking green land body (1), a draining pipeline system is arranged at the bottom of the sinking green land body (1), and the rain water draining grid (7) is communicated with the draining pipeline system.
2. The road side zonal drainage structure adopting the sinking green land according to claim 1, further comprising a haydite/organic matter cover layer (10), a planting soil layer (11), a middle sand filter layer (12), a gravel drainage layer (13) and a plain soil ramming layer (14), wherein the haydite/organic matter cover layer (10) is arranged at the side part of the sinking green land body (1); the planting soil layer (11) is arranged at the bottom of the ceramsite/organic matter covering layer (10); the middle sand filter layer (12) is arranged at the bottom of the planting soil layer (11); the gravel drainage layer (13) is arranged at the bottom of the middle sand filtering layer (12), and the plain soil ramming layer (14) is arranged at the bottom of the gravel drainage layer (13).
3. The road side zonal drainage structure adopting the sinking green land according to claim 1, wherein the rainwater grate (7) is a three-dimensional turbine type rainwater grate (7).
4. A road side zonal drainage structure employing a submerged green land according to claim 2, further comprising an impermeable membrane (9), the impermeable membrane (9) being disposed between the plain soil compacting layer (14) and the gravel drainage layer (13).
5. Road side zonal drainage structure employing a sunk green land according to claim 1, characterized in that the motor vehicle lane (3) is provided with open-cell curbs (4) close to the sunk green land body (1).
6. The road side zoning drainage structure adopting the sinking green land according to claim 1, wherein a C10 cushion layer (18) is arranged at the bottom of the sinking green land body (1), cement mortar MU10 bricks (17) are arranged at the side part of the sinking green land body (1), a well ring (16) is arranged at the top of the cement mortar MU10 bricks (17), and the well ring (16) is sleeved at an overflow port of the rainwater grate (7), and the overflow port is higher than the sinking green land body (1).
7. A road side zonal drainage structure employing a submerged greenbelt according to claim 1, characterized in that the drainage pipe system comprises a blind pipe (8) and a rain water overflow pipe (15), the blind pipe (8) communicating with the rain grate (7); the rainwater overflow pipe (15) is communicated with the blind pipe (8), and the rainwater overflow pipe (15) is communicated with a preset rainwater pipe network.
8. A road-side zoning drainage structure employing a sinking green land according to claim 2, characterized in that the ceramsite/organic matter coating layer (10) is sunk 10-20cm with respect to the motor vehicle lane (3).
9. The road side zonal drainage structure employing a sinking green land according to claim 4, wherein the impermeable membrane (9) is a two-cloth one-membrane.
10. A road side zonal drainage structure employing a submerged greenbelt according to claim 6, characterized in that the overflow is 15-25cm higher than the submerged greenbelt body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323087737.5U CN221218372U (en) | 2023-11-15 | 2023-11-15 | Road side zoning drainage structure adopting sinking green land |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323087737.5U CN221218372U (en) | 2023-11-15 | 2023-11-15 | Road side zoning drainage structure adopting sinking green land |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221218372U true CN221218372U (en) | 2024-06-25 |
Family
ID=91548100
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323087737.5U Expired - Fee Related CN221218372U (en) | 2023-11-15 | 2023-11-15 | Road side zoning drainage structure adopting sinking green land |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221218372U (en) |
-
2023
- 2023-11-15 CN CN202323087737.5U patent/CN221218372U/en not_active Expired - Fee Related
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20240625 |
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| CF01 | Termination of patent right due to non-payment of annual fee |