CN204849995U - Municipal administration road drainage system - Google Patents

Municipal administration road drainage system Download PDF

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Publication number
CN204849995U
CN204849995U CN201520293545.6U CN201520293545U CN204849995U CN 204849995 U CN204849995 U CN 204849995U CN 201520293545 U CN201520293545 U CN 201520293545U CN 204849995 U CN204849995 U CN 204849995U
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China
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rainwater
greenbelt
drainage
municipal
infiltration
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CN201520293545.6U
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万杰
宋娟
郭常安
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Guangzhou Urban Planning Survey and Design Institute
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Guangzhou Urban Planning Survey and Design Institute
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00Water conservation; Efficient water supply; Efficient water use
    • Y02A20/40Protecting water resources

Abstract

The utility model provides a municipal administration road drainage system, the rainwater some along the road the face converge to the town road inlet for stom water and get into municipal rainwater pipeline, trompil that another part was seted up on through car lane both sides road tooth flows in in the greenbelt between car lane and the non -motor way, get into rainwater unnecessary rainwater after greenbelt filtration, purification and infiltration in the greenbelt and flow into the permeate tube who oozes row pipe -line system and carry out the infiltration in order replenishing groundwater, when the rainwater of the big and too late quick infiltration of rainfall intensity then through the overflow bank of tubes that oozes row pipe -line system to lay with the car lane under municipal rainwater pipeline, direct through the town road inlet for stom water get into municipal rainwater pipeline the rainwater and through oozing the rainwater that row pipe -line system overflow got into municipal pipeline, enter near water through municipal rainwater pipeline jointly. The utility model discloses utilize the greenbelt and ooze row pipe -line system the drainage can, can play and purify the precontamination rainwater, delay peak flow discharge, subduct urban waterlogging and supply the effect of aspects such as groundwater.

Description

A kind of town road drainage system
Technical field
The utility model relates to urban sewerage and drainage prevention waterlogging field of engineering technology, especially LID technology (low affect development technique), GSI(green infrastructure) the town road drainage system that combines with conventional municipal drainage system.
Background technology
Along with the quickening of urbanization process, construction land area constantly expands, and causes Permeable stratum area significantly to increase, under causing identical condition of raining, runoff coefficient increases, and flood peak in advance, magnanimity increases, and forms huge pressure, also threaten the safety in city to urban sewerage and drainage prevention waterlogging and river course flood.
For the fast Development construction in city, traditional road drainage technique only carries out storm-water drainage by inlet for stom water, its pipe drainage ability is increasingly not enough and cause a series of urban waterlogging phenomenon, and then municipal administration department goes to solve by adopting the dimensional standard strengthening drainage pipe, newly-increased drainage pipe quantity and the counter-measure such as drainage channel and newly-built drainage pumping stations, while the larger financial cost of cost, its reply effect is really very unobvious.
For the draining waterlogging problem of modern city, municipal administration department strengthens the dimensional standard of drainage pipe, newly-increased drainage pipe quantity and the counter-measure such as drainage channel and newly-built drainage pumping stations and can not effectively solve by adopting, these measures simultaneously and the current growth requirement proposing to build sponge city of China are contrary.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of town road drainage system, the effect can played purification initial polluted rain water, delay peak flood flow, cut down the aspect such as urban waterlogging and recharge of groundwater.
For solving the problems of the technologies described above, the technical solution of the utility model is: a kind of town road drainage system, comprises municipal storm sewer gathering system, it municipal storm sewer laid under comprising motorway both sides;
Town road drainage system also comprises greenery patches and purifies system of infiltrating and ooze draining pipeline system,
The described greenery patches purification system of infiltrating comprises the perforate be located at greenbelt between motorway and nonmotorized vehicle lane, be located at the road curb between motorway and greenbelt and be located in road curb, lower than motorway and nonmotorized vehicle lane on described greenbelt elevation, rainwater flows into greenbelt by the perforate in road curb;
The described draining pipeline system that oozes comprises catchment infiltration well, osmos tube, infiltration overflow well and bleed off pipe, the elevation that lays of osmos tube and bleed off pipe is positioned at greenbelt below ground, in osmos tube, rainwater is by oozing recharge of groundwater under drainage purifying layer, rainwater in greenbelt can ooze down to catchment infiltration well, catchment infiltration well is communicated with osmos tube, osmos tube is communicated with infiltration overflow well, and the rainwater having little time down to ooze in infiltration overflow well imports municipal storm sewer by bleed off pipe.
The utility model based on " LID(low impact exploitation)+GSI(green infrastructure)+conventional art " integrated mode road drainage design;
Introduce LID technology, give full play to the filtration of greenbelt, purification function, with COD in municipal rainwater on road surface, SS two indices is example, filter through greenbelt, Rainwater Quality contamination index after purification reduces greatly, with COD, SS two indices is example, road surface, Guangzhou just rain runoff COD is 373mg/L, SS is 439mg/L, Road surface Initial runoff rainwater flows into after greenbelt filtration, purification that to ooze COD in the rainwater of draining pipeline system be 80 ~ 100mg/L, SS is 30 ~ 50mg/L, COD desired value is about 1/4 of Initial Runoff, SS desired value is about 1/10 of Initial Runoff, its ecological benefits produced environment are highly beneficial,
Introduce GSI technology, flat grate formula inlet for stom water is set in greenbelt and oozes draining pipeline system, on elevation, flat grate formula inlet for stom water is higher than greenbelt road surface 50mm, discrepancy in elevation purpose of design be make early-stage rainwater through green space system filter, purification and under ooze, it is unlikely that quickly through flat nose formula inlet for stom water, the infiltration rain pipe flowed in greenbelt oozes under carrying out.
Drainage system extends rainwater on road surface flow-through period greatly, reduces surface runoff amount, strengthens rain infiltration and groundwater recharge, delay the time that peak runoff is formed, flood peak clipping flow simultaneously, reduce the pressure of flood of For Stormwater Drainage System, improve the flood control standard of design section, reduce flood.The standard of pipeline reply rainfall intensity can be increased to 7-8 mono-from (3-5 mono-meets rainfall intensity) prior art design basis and meet the rainfall phase again, and the economic benefit brought is very remarkable.
As improvement, lower than motorway and nonmotorized vehicle lane 0.15-0.25m on greenbelt elevation.
As improvement, road curb arranges perforate every 8-12 rice.
As improvement, the buried depth of described municipal rain pipe is at below 2.5m, and entirety will lay elevation lower than what ooze draining pipeline system.
As improvement, the elevation that lays of osmos tube and bleed off pipe is positioned at greenbelt below ground 1.5-2.0m.
As improvement, described drainage purifying layer is the drainage geotextiles being located at soakaway trench periphery, drainage geotextiles parcel φ 15-φ 25 gravel grating layer.
As improvement, gravel grating layer thickness is 150-200mm.
As improvement, the grate of described catchment infiltration well has and cuts dirty frame.
The beneficial effect that the utility model is compared with prior art brought is:
Give full play to the filtration of greenbelt, purification function and diverter function, drainage system extends rainwater on road surface flow-through period greatly, reduce surface runoff amount, strengthen rain infiltration and groundwater recharge, delay the time that peak runoff is formed, flood peak clipping flow simultaneously, reduce the pressure of flood of For Stormwater Drainage System, improve the flood control standard of design section, reduce flood.
Accompanying drawing explanation
Fig. 1 is water discharge method flow chart.
Fig. 2 is drainage system elevation.
Fig. 3 is drainage system plan view.
Detailed description of the invention
Below in conjunction with Figure of description, the utility model is described in further detail.
A kind of town road drainage system, comprises municipal storm sewer gathering system, system is infiltrated in greenery patches purification and ooze draining pipeline system.Overall be design based on the road drainage of " the low impact exploitation of LID()+GSI(green infrastructure)+conventional art " integrated mode.
As shown in Figure 2,3, municipal administration storm sewer gathering system is conventional discharge facility, it lays conventional municipal storm sewer 3, rainwater inspection well and traditional flat grate formula inlet for stom water 4 under comprising motorway both sides, the buried depth of conventional municipal storm sewer 3 controls at below 2.5m, overall to lay elevation lower than what ooze draining pipeline system, object is receiving from conventional municipal roads rain inlet remittance rainwater while, also receives the rainwater from oozing draining pipeline system discharge.
As shown in Figure 2,3, the purification system of infiltrating in described greenery patches comprises and is located at greenbelt 2 between motorway and nonmotorized vehicle lane, is located at the road curb between motorway and greenbelt 2 and is located at the perforate 1 in road curb.Lower than motorway and nonmotorized vehicle lane 0.15-0.25m on greenbelt 2 elevation, road curb arranges perforate 1 every 8-12 rice, and rainwater flows into greenbelt 2 by the perforate in road curb.
As shown in Figure 2,3, ooze draining pipeline system to be made up of catchment infiltration well 9, osmos tube 10, infiltration overflow well 11 and bleed off pipe 5 four part, the elevation that lays of osmos tube 10 and bleed off pipe 5 is positioned at greenbelt 2 below ground 1.5-2.0m, and caliber generally adopts DN200.Rain penetration pipe 10 periphery drainage geotextiles 6 wraps up that φ 15-φ 25 gravel grating layer 7 is auxiliary to be infiltrated, and to increase infiltration capacity, gravel grating layer 7 thickness generally adopts 150 ~ 200mm.Early-stage rainwater is storage in greenbelt 2, filtration and purification preferentially, and most of impurity is retained purification by greenbelt, and a small amount of suspension enters catchment infiltration well 9 with current.Catchment infiltration well 9 grate has and cuts a dirty frame, fine impurities can be retained further the laggard draining pipeline system that infiltrates, but cut after certain interval of time dirty frame can block by dirt accumulation, therefore need after rainy season regularly to clear up cutting a dirty frame.
As shown in Figure 1, water discharge method of the present utility model
The first step: pollute a more serious early-stage rainwater part and conflux along road surface to traditional town road inlet for stom water and enter conventional municipal storm sewer 3; Another part is extremely along in the smooth and easy inflow greenbelt 2 of perforate kerbstone;
Second step: after the rainwater entered in greenbelt 2 filters through greenbelt, purifies and rains and oozes, unnecessary water infiltration draining pipeline system oozes with recharge of groundwater under carrying out, and the rainwater having little time greatly to ooze fast when rainfall intensity then drains into the conventional municipal storm sewer 3 laid with under motorway through bleed off pipe 5;
3rd step: directly enter the rainwater of conventional municipal storm sewer 3 by town road inlet for stom water and enter the rainwater of conventional municipal pipeline by oozing draining pipeline system overflow, jointly entering neighbouring water body by conventional municipal storm sewer 3.
Pollute a more serious early-stage rainwater part to conflux along road surface to traditional town road inlet for stom water and enter conventional municipal storm sewer 3; Another part is extremely along in the smooth and easy inflow greenbelt 2 of perforate kerbstone, both sides greenbelt 2 on elevation design lower than municipal road surface 0.2m, the unnecessary water infiltration draining pipeline system after oozing that filters through greenbelt, purifies and rain oozes with recharge of groundwater under carrying out, and the rainwater having little time because rainfall intensity is large to ooze fast then drains into the conventional municipal storm sewer 3 be layed under motorway through bleed off pipe 5.This process system gives full play to the filtration, purification function of greenbelt 2, for COD, SS two indices in municipal rainwater on road surface, the first rain runoff COD in road surface, Guangzhou is 373mg/L, SS is 439mg/L, it is 30 ~ 50mg/L that Road surface Initial runoff rainwater flows into after greenbelt 2 filtration, purification that to ooze COD in the rainwater of draining pipeline system be 80 ~ 100mg/L, SS, COD desired value is about 1/4 of Initial Runoff, SS desired value is about 1/10 of Initial Runoff, and its ecological benefits produced environment are highly beneficial; This process system substantially prolongs rainwater on road surface flow-through period simultaneously, decrease surface runoff amount, enhance rain infiltration and groundwater recharge, delayed the time that peak runoff is formed simultaneously, reduce peak flood flow, reduce the pressure of flood of For Stormwater Drainage System, improve the flood control standard of design section, decrease flood.The standard of pipeline reply rainfall intensity can be increased to 7-8 mono-from (3-5 mono-meets rainfall intensity) prior art design basis and meet the rainfall phase again, the economic benefit brought is very remarkable, is the economically feasible technology that a kind of applicable China builds sponge urban development demand.
After using the road drainage design technology based on " LID+GSI+ conventional art " integrated mode to carry out engineering design, there is following advantage relative to traditional road Drainage Design technics comparing in its ecological benefits, economic benefit and pipe drainage ability aspect:

Claims (8)

1. a town road drainage system, comprises municipal storm sewer gathering system, it municipal storm sewer laid under comprising motorway both sides;
It is characterized in that: town road drainage system also comprises greenery patches and purifies system of infiltrating and ooze draining pipeline system,
The described greenery patches purification system of infiltrating comprises the perforate be located at greenbelt between motorway and nonmotorized vehicle lane, be located at the road curb between motorway and greenbelt and be located in road curb, lower than motorway and nonmotorized vehicle lane on described greenbelt elevation, rainwater flows into greenbelt by the perforate in road curb;
The described draining pipeline system that oozes comprises catchment infiltration well, osmos tube, infiltration overflow well and bleed off pipe, the elevation that lays of osmos tube and bleed off pipe is positioned at greenbelt below ground, in osmos tube, rainwater is by oozing recharge of groundwater under drainage purifying layer, rainwater in greenbelt can ooze down to catchment infiltration well, catchment infiltration well is communicated with osmos tube, osmos tube is communicated with infiltration overflow well, and the rainwater having little time down to ooze in infiltration overflow well imports municipal storm sewer by bleed off pipe.
2. a kind of town road drainage system according to claim 1, is characterized in that: lower than motorway and nonmotorized vehicle lane 0.15-0.25m on greenbelt elevation.
3. a kind of town road drainage system according to claim 1, is characterized in that: road curb arranges perforate every 8-12 rice.
4. a kind of town road drainage system according to claim 1, is characterized in that: the buried depth of described municipal rain pipe is at below 2.5m, and entirety will lay elevation lower than what ooze draining pipeline system.
5. a kind of town road drainage system according to claim 1, is characterized in that: the elevation that lays of osmos tube and bleed off pipe is positioned at greenbelt below ground 1.5-2.0m.
6. a kind of town road drainage system according to claim 1, is characterized in that: described drainage purifying layer is the drainage geotextiles being located at soakaway trench periphery, drainage geotextiles parcel φ 15-φ 25 gravel grating layer.
7. a kind of town road drainage system according to claim 6, is characterized in that: gravel grating layer thickness is 150-200mm.
8. a kind of town road drainage system according to claim 1, is characterized in that: the grate of described catchment infiltration well has and cuts dirty frame.
CN201520293545.6U 2015-05-08 2015-05-08 Municipal administration road drainage system Active CN204849995U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106555430A (en) * 2017-01-04 2017-04-05 肖刚 Heat-extraction system is received in a kind of sponge type rain penetration

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106555430A (en) * 2017-01-04 2017-04-05 肖刚 Heat-extraction system is received in a kind of sponge type rain penetration

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