CN205223761U - A biological depression system that is used for blending purification under rainwater - Google Patents

A biological depression system that is used for blending purification under rainwater Download PDF

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Publication number
CN205223761U
CN205223761U CN201520890556.2U CN201520890556U CN205223761U CN 205223761 U CN205223761 U CN 205223761U CN 201520890556 U CN201520890556 U CN 201520890556U CN 205223761 U CN205223761 U CN 205223761U
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China
Prior art keywords
depression
biological
purification
rainwater
rainwater infiltration
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CN201520890556.2U
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Chinese (zh)
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李秀美
邵承齐
李嫔
钟香斌
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Shanghai Landscape Construction & Design Co Ltd
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Shanghai Landscape Construction & Design Co Ltd
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Abstract

The utility model relates to a biological depression system that is used for blending purification under rainwater, including depression and earth's surface vegetation (1) of planting in the depression top, its characterized in that, the depression through cusp curb and road stereoplasm mat formation (7) separate, inside reservoir bed and the infiltration of from bottom to top setting gradually in depression purify layer, earth's surface vegetation (1) plant to be in the infiltration purify on the layer. Compared with the prior art, the utility model has the advantages of can sustainable management rainwater and the pollution of reduction rainwater to accomodating the water.

Description

A kind of biological depression system for rainwater infiltration and purification
Technical field
The utility model relates to a kind of biological depression, especially relates to a kind of biological depression system for rainwater infiltration and purification.
Background technology
In Modernized City Construction, the rainfall in place, usually by Vertical Design, adopts that in line mode is organized enters storm sewer system, finally enters the receiving water body such as river, lake.This kind of non-continuable storm water management mode, causes place hydrological characteristics to change, brings a series of ecological problem to environment, such as often causes local, city waterlogging, and Shallow Groundwater Resources is exhausted, and receiving water body pollutes etc.
In street, residential quarter, in the specific design construction in the places such as parking lot, the kerbstone of road edge is usually above road surface, kerbstone has blocked the UNICOM in greenery patches and road, both are made to become two independently parts, greenbelt becomes the planting groove of function singleness, lose the approach of storage rainwater, thus lose the function of management rainwater, in addition, because the height in greenery patches is often higher than road, rainwater in greenbelt reach capacity backward road side run off, cause the amount of rainfall of storage few, soil erosion, thus need more manpower, material resources go the sustainability safeguarding view, maintenance cost is made to increase further again.
Utility model content
The purpose of this utility model is exactly provide a kind of biological depression system for rainwater infiltration and purification to overcome defect that above-mentioned prior art exists.
The purpose of this utility model can be achieved through the following technical solutions:
A kind of biological depression system for rainwater infiltration and purification, comprise a depression and be planted in the surface vegetation above depression, mated formation by dentation curb and road hard and separate in described depression, described inside, depression from bottom to top set gradually reservoir bed and under ooze purifying layer, described surface vegetation be planted in described under ooze on purifying layer.
Described dentation curb comprises the flat kerbstone of alternate setting and protruding kerbstone, described flat kerbstone is mated formation with described hard and is flushed, described protruding kerbstone exceeds described hard and mats formation, adopt dentation curb rainwater can be made to enter biological depression easily on the one hand, make the plant in greenery patches can obtain more moisture (especially in arid area), reduce the irrigation frequency of plant, reduce maintenance cost; Prevent vehicle to the damage in biological depression on the other hand.
Described reservoir bed is the hardcore bed be laid on bottom depression, and the rainwater infiltration caused when hardcore bed can alleviate the too much water yield is not smooth, can store a part of water yield, carry out oozing down slowly.
Oozing purifying layer under described is the mixed planting soil covered above described water cell, mixed planting soil provides environment for plant growth, its inside can form abundant microbial environment, rainwater is purified, the soil of mixed planting is simultaneously again the chiltern filtering layer that water-permeable and air permeable ability is strong, and rainwater can be made to permeate fast.
Ooze under described above purifying layer and be provided with mulch layer, described mulch layer is cobble, lava or bark, can prevent rainwater washing away mixed planting soil, also can consolidate root, reduces weeds and filter foreign material.
Ooze the geotextiles arranging below purifying layer and it separated with described reservoir bed and depression surrounding soil under described, geotextiles can prevent mixed planting soil to run off, and enters in hardcore bed, also can prevent lower soil from bursting and become muddy when a thaw sets in.
This biological depression system also comprises and is arranged on the adjustable overflow unit of depression inner height, when running into larger heavy rain, rainwater infiltration, store when reaching capacity, excessive rainwater is expelled to municipal Storm Sewer Network or rain collector by overflow unit, smooth to ensure city operational security, the height of overflow unit can be arranged according to local storm rainfall size simultaneously, realizes controllability to collection amount of rainfall.
Described overflow unit is a square storing apparatus, described storing apparatus end face fixed installation grid, bottom is provided with settling zone, middle part is detachable installs the metal cage being used for scrubbing, lateral opening also connects a gutter, grid can be tackled foreign material larger in rainwater, then the materials such as silt first precipitate in settling zone by rainwater, metal cage can adsorb organic matters such as the greasy dirts in rainwater, last rainwater enters in city planting ductwork or rain collector by gutter, arrange detachable metal cage in addition can clear up in time, husky mud simultaneously also in easy cleaning bottom precipitation district, it can be made to keep efficient task performance.
Described metal cage inside is provided with limestone, and limestone effectively can adsorb organic matters such as the greasy dirts in rainwater.
Described settling zone arranges cobble, settling zone place cobble, can effectively prevent rainwater to silt wash away.
Compared with prior art, the utility model tool has the following advantages:
(1) by changing the storm-water drainage mode in place, rainwater is made to enter biological depression, realize the management of greenery patches to rainwater, ooze under making rainwater in biological depression, purify, store, avoid rainwater directly to enter municipal Storm Sewer Network and the consequence such as Groundwater Resources Depletion, receiving water body pollution caused.
(2) dentation curb is adopted to realize the separation of biological depression and road pavement, rainwater can be made to enter biological depression easily on the one hand, make the plant in greenery patches can obtain more moisture, reduce the irrigation frequency of plant, reduce maintenance cost, prevent vehicle to the damage in depression on the other hand.
(3) each size in biological depression and the height of overfall arrange according to local storm rainfall size, can calculate the recovery of rainwater in place, lower milliosmolarity thus easily, thus realize controllability to the management of rainwater in sponge urban construction.
Accompanying drawing explanation
Fig. 1 is the utility model biological depression structural representation;
Fig. 2 is the utility model overflow unit structural representation.
In figure, 1 is surface vegetation, and 2 is mulch layer, and 3 is mixed planting soil, and 4 is geotextiles, 5 is hardcore bed, and 6 is overflow unit, and 7 mat formation for hard, and 8 is flat kerbstone, and 9 is protruding kerbstone, 61 is grid, and 62 is metal cage, and 63 is limestone, and 64 is settling zone, and 65 is gutter.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is described in detail.
Embodiment
As Fig. 1, a kind of biological depression system for rainwater infiltration and purification shown in Fig. 2, comprise a depression and be planted in the surface vegetation 1 above depression, to be mated formation 7 separations by dentation curb and road hard in described depression, described inside, depression from bottom to top set gradually reservoir bed and under ooze purifying layer, described surface vegetation 1 be planted in described under ooze on purifying layer, by changing the storm-water drainage mode in place, by place gradient slope aspect greenbelt, rainwater is made to enter depression, realize the management of greenery patches to rainwater, ooze under making rainwater in place, purification and storage, rainwater is avoided directly to enter municipal Storm Sewer Network and the Groundwater Resources Depletion caused, the consequences such as receiving water body pollution.In biological depression, surface vegetation 1 selects periodically water-fast wet plant, and can carry out the interception of part to rainfall, root system of plant can keep the loose of soil, and ensure that soil oozes ability efficiently, plant can ensure diversity of organism in place simultaneously.Due to the functional requirement in biological depression, cause the change of surface vegetation 1 configuration structure in greenbelt, the selection of surface vegetation a kind also can change to some extent, to adapt to periodic flood harm, thus the endemic plant that more flexible is strong can be selected, make view have more characteristic, diversification, adopt native plants simultaneously, maintenance cost can reduce greatly.Dentation curb in this biological depression system comprises flat kerbstone 8 and the protruding kerbstone 9 of alternate setting, described flat kerbstone 8 and described hard are mated formation and 7 to be flushed, described protruding kerbstone 9 exceeds described hard and mats formation 7, adopt dentation curb rainwater can be made to enter biological depression easily on the one hand, make the plant in greenery patches can obtain more moisture (especially in arid area), reduce the irrigation frequency of plant, reduce maintenance cost; Prevent vehicle to the damage in biological depression on the other hand.Described reservoir bed is the hardcore bed 5 be laid on bottom depression, and the rainwater infiltration caused when hardcore bed 5 can alleviate the too much water yield is not smooth, can store a part of water yield, carry out oozing down slowly.Oozing purifying layer under described is the mixed planting soil 3 covered above described water cell, described mixed planting soil 3 is the planting soil adopting sand, earth and fertilizer to mix, mixed planting soil 3 provides environment for plant growth, its inside can form abundant microbial environment, rainwater is purified, the soil of mixed planting simultaneously 3 is again the chiltern filtering layer that water-permeable and air permeable ability is strong, and rainwater can be made to permeate fast.Ooze under described above purifying layer and be provided with mulch layer 2, described mulch layer 2 is cobble, lava or bark, can prevent rainwater washing away mixed planting soil 3, also can consolidate root, reduces weeds and filter foreign material.Ooze the geotextiles 4 arranging below purifying layer and it separated with described reservoir bed and depression surrounding soil under in addition, geotextiles 4 can prevent mixed planting soil 3 to run off, and enters in hardcore bed 5, also can prevent lower soil from bursting and become muddy when a thaw sets in.
This biological depression system also comprises and is arranged on the adjustable overflow unit of depression inner height 6, when running into larger heavy rain, rainwater infiltration, store when reaching capacity, excessive rainwater is expelled to municipal Storm Sewer Network or rain collector by overflow unit 6, smooth to ensure city operational security, the height of overflow unit 6 can be arranged according to local storm rainfall size simultaneously, realizes controllability to collection amount of rainfall.Overflow unit 6 is a square storing apparatus as shown in Figure 2, described storing apparatus end face fixed installation grid 61, bottom is provided with settling zone 64, and cobble is set in settling zone 64, the detachable metal cage 62 installed for scrubbing in the middle part of described storing apparatus, metal cage 62 inside is provided with limestone 63, and storing apparatus lateral opening also connects a gutter 65, and described gutter 65 is PVC drain pipe.After collection in biological depression to rainwater reaches capacity, rainwater is discharged by overflow unit 6, first grid 61 can be tackled foreign material larger in rainwater, then the materials such as silt first precipitate in settling zone 64 by rainwater, settling zone 64 arrange cobble can effectively prevent rainwater to silt wash away, metal cage 62 sodalime rock 63 can adsorb organic matters such as the greasy dirts in rainwater, reduce the pollution to receiving water body, last rainwater enters in city planting ductwork or rain collector by gutter 65.Metal cage 62 is detachable, periodic cleaning can change limestone 63, and clear up silt in settling zone 64.
In the present embodiment, each size in biological depression and the height of overfall arrange according to local storm rainfall size, the recovery of rainwater in place, lower milliosmolarity can be calculated easily thus, thus controllability is realized to the management of rainwater in sponge urban construction.

Claims (10)

1. the biological depression system for rainwater infiltration and purification, comprise depression and be planted in the surface vegetation (1) above depression, it is characterized in that, described depression by dentation curb and road hard mat formation (7) separate, described inside, depression from bottom to top set gradually reservoir bed and under ooze purifying layer, described surface vegetation (1) be planted in described under ooze on purifying layer.
2. a kind of biological depression system for rainwater infiltration and purification according to claim 1, it is characterized in that, described dentation curb comprises flat kerbstone (8) and the protruding kerbstone (9) of alternate setting, described flat kerbstone (8) mat formation with described hard (7) flush, described protruding kerbstone (9) exceeds described hard and mats formation (7).
3. a kind of biological depression system for rainwater infiltration and purification according to claim 1, it is characterized in that, described reservoir bed is the hardcore bed (5) be laid on bottom depression.
4. a kind of biological depression system for rainwater infiltration and purification according to claim 1, it is characterized in that, oozing purifying layer under described is the mixed planting soil (3) covered above described reservoir bed.
5. a kind of biological depression system for rainwater infiltration and purification according to claim 1, it is characterized in that, ooze under described above purifying layer and be provided with mulch layer (2), described mulch layer (2) is cobble, lava or bark.
6. a kind of biological depression system for rainwater infiltration and purification according to claim 1, is characterized in that, ooze the geotextiles (4) arranging below purifying layer and itself and described reservoir bed and depression surrounding soil are separated under described.
7. a kind of biological depression system for rainwater infiltration and purification according to claim 1, is characterized in that, this biological depression system also comprises and is arranged on the adjustable overflow unit of depression inner height (6).
8. a kind of biological depression system for rainwater infiltration and purification according to claim 7, it is characterized in that, described overflow unit (6) is a square storing apparatus, described storing apparatus top fixed installation grid (61), bottom is provided with settling zone (64), middle part is detachable installs the metal cage (62) being used for scrubbing, and lateral opening also connects a gutter (65).
9. a kind of biological depression system for rainwater infiltration and purification according to claim 8, it is characterized in that, described metal cage (62) inside is provided with limestone (63).
10. a kind of biological depression system for rainwater infiltration and purification according to claim 8, it is characterized in that, described settling zone (64) arranges cobble.
CN201520890556.2U 2015-11-10 2015-11-10 A biological depression system that is used for blending purification under rainwater Active CN205223761U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105970764A (en) * 2016-05-30 2016-09-28 广州市市政工程设计研究总院 Paving method of drainage pavement

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105970764A (en) * 2016-05-30 2016-09-28 广州市市政工程设计研究总院 Paving method of drainage pavement
CN105970764B (en) * 2016-05-30 2018-05-11 广州市市政工程设计研究总院 A kind of laying method of drainage pavement

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