CN202031005U

CN202031005U - Ecological drainage channel

Info

Publication number: CN202031005U
Application number: CN2011200268290U
Authority: CN
Inventors: 肖峻; 李彤
Original assignee: SHANGHAI MUNICIPAL TRANSPORTATION DESIGN INSTITUTE Co Ltd
Current assignee: SHANGHAI MUNICIPAL TRANSPORTATION DESIGN INSTITUTE Co Ltd
Priority date: 2011-01-27
Filing date: 2011-01-27
Publication date: 2011-11-09
Anticipated expiration: 2021-01-27

Abstract

The utility model discloses an ecological drainage channel, which is arranged in a pateriform form, is arranged between a non-motor vehicle lane and a motor vehicle lane, and comprises a channel body with a side slope, wherein the channel body comprises a channel bottom, and is partitioned into a drainage area, a buffer area and a seepage area in sequence from the side slope to the channel bottom; the cross section of channel body consists of a vegetable layer, a planting soil layer, a broken stone layer and a cobble layer in sequence from top to bottom; adjacent section layers are isolated from each other by using acupuncture geotextile; a soft water-permeable pipe is arranged in the cobble layer; overflow wells are arranged in the longitudinal direction of the channel body at the intervals of between 30 and 40 meters; an upper end opening of each overflow well serves as an overflow port; the overflow port is communicated with a drain pipe at the bottom of each overflow well; and one side of each overflow well is communicated with the soft water-permeable pipe. The ecological drainage channel has a good initial rainwater treating effect, high rainwater impact load resistance, safe and reliable road drainage and a very strong ecological environmental protection effect.

Description

A kind of ecological gutter

Technical field

The utility model relates to the ecological drainage of a kind of town road, especially a kind of ecological gutter.

Background technology

The urban road surface flow is the chief component of non-point pollution, contains pollutants such as more suspended particulate, organic pollution, heavy metal and oily substance in the early-stage rainwater, and is comparatively serious to the receiving water body influence.In the existing discharging mode, drainage pipe and sewerage are used the most general, but it only can use as rain water collecting system, early-stage rainwater produces unprocessed pipeline or the irrigation canals and ditches just included in of road runoff, after carrying, directly enter receiving water body, not only easily cause the water pollution of receiving water body, and the pipeline deposit is poured water body, cause dual pollution.Since therefore the pollution problem that existing traditional drainage pipe facility can not solve early-stage rainwater derives various Ecological Disposal measures, such as generally including shallow careless ditch, greening filter bag or shore water buffer strip etc.Shallow careless ditch generally is trapezoidal or pateriform is arranged, the degree of depth is more shallow, it can collect certain run-off, has conveying function, rainwater oozes under at first as far as possible rather than directly enters downstream line or receiving water body, be a kind of ecotypic rainwater collection, conveying and cleaning system, generally be used for the speedway both sides, but may have a negative impact to road foundation behind the shallow careless ditch rainwater infiltration, and other drainage measures have road section is had relatively high expectations, the scope of application that has is narrow, all has certain draining security hidden trouble.

The utility model content

The purpose of this utility model provides a kind of part shortcoming that has overcome above-mentioned ecological drainage measure, adopt the ecological gutter of drainage pipe and the integrated mode of ecological ditch, shallow careless trench system and pipe-line system are carried out integrated combination and optimization, the functional requirement and the road drainage Ecological Disposal demand of storm-water drainage both can have been satisfied, can solve the water pollution issue that early-stage rainwater road runoff brings again, applied widely, draining safety.

The technical scheme that its technical problem that solves the utility model adopts is:

A kind of ecological gutter, wherein, being pateriform distributes, be arranged between nonmotorized vehicle lane and the motorway, comprise the ditch body on band edge slope, described ditch body comprises bottom of trench, be divided into earial drainage district, buffer area and vadose region by described side slope successively to described bottom of trench direction, described ditch body is followed successively by vegetable layer, plantation soil layer, macadam and boulder bed from top to bottom, is provided with flexible porous tube in the described boulder bed, and described flexible porous tube communicates with the drainage pipe that is positioned at described ditch body below.

Above-mentioned ecological gutter, wherein, described planting soil layer thickness is 30cm～80cm, and described macadam thickness is 30cm, and described boulder bed thickness is 30cm, separates at interval with the acupuncture geotextiles between each described cross section layering.

Above-mentioned ecological gutter, wherein, described macadam is made of the sand gravel of particle diameter at 5～40mm.

Above-mentioned ecological gutter, wherein, described earial drainage district domatic from top to bottom comprises connect successively first domatic and second domatic, the tangent value at the described first domatic oblique angle is 1:20, the tangent value at the described second domatic oblique angle is 1:2, and the tangent value at the domatic oblique angle of described vadose region is 1:3.7.

Above-mentioned ecological gutter, wherein, the internal diameter of described flexible porous tube is 100mm.

Above-mentioned ecological gutter, wherein, the tangent value at the oblique angle of described side slope is 1:3.

Above-mentioned ecological gutter wherein, is equipped with the acupuncture geotextiles between described ditch body and the nonmotorized vehicle lane, is equipped with anti-seepage geomembrane between described ditch body and the motorway.

Above-mentioned ecological gutter, wherein, described ditch body vertically is provided with an overflow well every 30m～40m, and the upper end open of described overflow well is an overfall, described overfall is communicated with the drainage pipe of described overflow well bottom, and described overflow well one side communicates with described flexible porous tube.

The utility model adopts the ecological discharging mode of combined type, and good to the early-stage rainwater treatment effect, anti-rainwater impact load ability is strong, and road drainage is safe and reliable, has very strong ecological, environmental protective effect.

Description of drawings

Fig. 1 is the cross-sectional configuration schematic diagram in the ecological gutter of the utility model;

Fig. 2 is that the overflow well in the ecological gutter of the utility model is laid schematic diagram.

The specific embodiment

The utility model is described in further detail below in conjunction with the drawings and specific embodiments, but not as qualification of the present utility model.

Please referring to shown in Figure 1, the ecological gutter of the utility model is arranged between nonmotorized vehicle lane 2 and the motorway 3, being pateriform distributes, the ditch body 1 that comprises band edge slope 11, the tangent value at the oblique angle of side slope 11 are pressed 1:3 control, and ditch body 1 comprises bottom of trench 12, be divided into earial drainage district A, buffer area B and vadose region C by side slope 11 successively to bottom of trench 11 directions, available depth is 30cm in the ditch, and safe superelevation is got 30cm in the ditch, and the design maximum water flow velocity is 0.8m/s.Ditch body 1 is followed successively by vegetable layer 13 from top to bottom, thickness is the plantation soil layer 14 of 30cm～80cm, macadam 15 and the boulder bed 16 that thickness is 30cm, and wherein, macadam 15 is made of the sand gravel of particle diameter at 5～40mm.Earial drainage district A domatic from top to bottom comprises connect successively first domatic and second domatic, A1 and the A2 of the corresponding earial drainage of difference district A, the tangent value at the first domatic oblique angle is 1:20, and the tangent value at the second domatic oblique angle is 1:2, and the tangent value at the domatic oblique angle of vadose region is 1:3.7.Separate at interval to prevent obstruction with acupuncture geotextiles 4 between each section layering, being provided with internal diameter in the boulder bed 16 is the flexible porous tube 5 of 100mm, is used to collect down the rainwater that oozes.Also be equipped with acupuncture geotextiles 4 between ditch body and the nonmotorized vehicle lane, then be equipped with anti-seepage geomembrane 6 between ditch body 1 and the motorway 3, bottom of trench 12 belows are equipped with drainage pipe 9, and flexible porous tube 5 communicates with drainage pipe 9.Please referring to shown in Figure 2, ditch body 1 vertically is provided with an overflow well 7 every 30m～40m, and the upper end open of overflow well 7 is an overfall 71, and overfall 71 is communicated with the drainage pipe 9 of overflow well 7 bottoms, overfall 71 is communicated with bottom of trench 12, and overflow well 7 one sides communicate with flexible porous tube 5.

Please referring to illustrated in figures 1 and 2, when moving this ecological gutter, specifically be divided into the rainfall initial stage, form in the ditch behind the runoff and three kinds of operational modes during storm runoff, rainfall during the initial stage amount of rainfall less, but rainwater pollution is the most serious, and water quality is the poorest, the SS(suspension in the early-stage rainwater) can be by the vegetable layer 13 of ditch body 1 and 14 interceptions of plantation soil layer, pollutant such as organic matter, oils can be degraded at macadam 15 and the boulder bed 16 inner branches of realizing, thereby realizes the processing to early-stage rainwater; After forming the interior runoff of ditch, along with the increase of rainfall duration, rainwater infiltration speed is stable gradually in this ecological gutter, the rainwater that enters in the ditch builds up, begin to form runoff in the ditch, rainfall runoff along gutter side slope 11 by height to low emission, and produce water districts 8 at bottom of trench 12; When producing runoff, because rainfall is to the middle and later periods, so water quality is better, under constantly increase situation of amount of precipitation, water district 8 scopes that the miscarriage of ditch internal diameter is given birth to constantly enlarge, water surface zone raises gradually, when water level exceeds the control absolute altitude when being 30cm, rainwater can be in ditch enters in the well every the overfall 71 of the overflow well 7 of a segment distance setting, and by 9 discharges of the drainage pipe in the overflow well 7, thereby guaranteed the safety of road drainage, and the unnecessary rainwater that infiltrates in the boulder bed 16 can be discharged in the overflow well 7 also by flexible porous tube 5, the overflowing rain water when producing storm runoff is to the minimum that influences of receiving water body.

The above only is the utility model preferred embodiment; be not so limit claim of the present utility model; so the equivalent structure that all utilization the utility model manuals and diagramatic content have been done changes, and all is included in the protection domain of the present utility model.

Claims

1. ecological gutter, it is characterized in that, being pateriform distributes, be arranged between nonmotorized vehicle lane and the motorway, comprise the ditch body on band edge slope, described ditch body comprises bottom of trench, be divided into earial drainage district, buffer area and vadose region by described side slope successively to described bottom of trench direction, described ditch body is followed successively by vegetable layer, plantation soil layer, macadam and boulder bed from top to bottom, is provided with flexible porous tube in the described boulder bed, and described flexible porous tube communicates with the drainage pipe that is positioned at described ditch body below.

2. ecological gutter according to claim 1 is characterized in that, described planting soil layer thickness is 30cm～80cm, and described macadam thickness is 30cm, and described boulder bed thickness is 30cm, separates at interval with the acupuncture geotextiles between each described cross section layering.

3. ecological gutter according to claim 1 and 2 is characterized in that, described macadam is made of the sand gravel of particle diameter at 5～40mm.

4. ecological gutter according to claim 1, it is characterized in that, described earial drainage district domatic from top to bottom comprises connect successively first domatic and second domatic, the tangent value at the described first domatic oblique angle is 1:20, the tangent value at the described second domatic oblique angle is 1:2, and the tangent value at the domatic oblique angle of described vadose region is 1:3.7.

5. ecological gutter according to claim 1 is characterized in that, the internal diameter of described flexible porous tube is 100mm.

6. ecological gutter according to claim 1 is characterized in that, the tangent value at the oblique angle of described side slope is 1:3.

7. ecological gutter according to claim 1 is characterized in that, is equipped with the acupuncture geotextiles between described ditch body and the nonmotorized vehicle lane, is equipped with anti-seepage geomembrane between described ditch body and the motorway.

8. ecological gutter according to claim 1, it is characterized in that, described ditch body vertically is provided with an overflow well every 30m～40m, the upper end open of described overflow well is an overfall, described overfall is communicated with the drainage pipe of described overflow well bottom, and described overflow well one side communicates with described flexible porous tube.