CN101705716A - Method for reducing water on urban streets - Google Patents
Method for reducing water on urban streets Download PDFInfo
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- CN101705716A CN101705716A CN200910066397A CN200910066397A CN101705716A CN 101705716 A CN101705716 A CN 101705716A CN 200910066397 A CN200910066397 A CN 200910066397A CN 200910066397 A CN200910066397 A CN 200910066397A CN 101705716 A CN101705716 A CN 101705716A
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Abstract
The invention discloses a method for reducing water on urban streets which builds rainwater accumulation devices in residential quarters or other public areas such as squares, parks and grassy areas without affecting the traffic, wherein the rainwater accumulation devices are communicated with urban sewerage backbone network through drainage branch pipes with drainage flow regulating devices. When it rains, the rainwater on areas except the urban streets firstly flows in the rainwater accumulation devices, then water in the rainwater accumulation devices is drained to the urban sewerage backbone network designedly and organically according to the flow set by the drainage flow regulating devices to outflow. The constant flow organically drainage is carried out according to different zones and different time intervals along the rainwater accumulation devices, the rainwater branch pipes and the backbone pipes so as to solve the conflict that the drainage capacities of the drainage backbone pipes and river channels are not enough as rainwater is drained intensively in short time, and reduce the influence of standing water to the work and life of people.
Description
Technical field
The present invention relates to a kind of technical scheme that is used to improve city and road ponding situation thereof, especially a kind of method that reduces water on urban streets.
Background technology
Rain and to cause water on urban streets, be people to one of bigger problem of government's suggestion, also be that a lot of city managers do one's utmost the problem that will solve.
We just are example with Beijing.Beijing is as the capital, has great advantage than general city in each side such as technology, financial resources, so Pekinese's urban operating mechanism also is more complete, but Beijing still is subjected to the puzzlement of road ponding.Beijing's drainage pipeline networks is made up of main line, branch line etc.The standard of drainage pipeline networks mostly is meant the standard of arterial drain net.General area trunk design standard is one to three year chance, is equivalent to per hour 36 to 50 millimeters rainfall, can resist per hour 36 to 50 millimeters rainfall.Some key areas, such as the Tian'anmen Square, public area, Olympic Green, standard of drainage is 5 years one chances, is equivalent to per hour 56 millimeters rainfall.The a-hundred-year rainfall in Beijing is per hour 106 millimeters.
Because global warming, the probability that the extreme weather situation occurs is progressively increasing.Run into strong convective weather, rainfall in general hour all surpasses more than 50 millimeters.Beijing road ponding mainly is two reasons so, at first is extreme weather takes place.Second reason is that most of flowing line design standard can not satisfy the requirement of extreme weather fully, so cause some regional ponding.Improve the standard of drainage of main line, strengthen the diameter of main drain on a large scale, also want the draining section in corresponding increasing gutter, river course, engineering quantity is very big, can not carry out this engineering in the recent period.Also there is suggestion to build the collecting-tank collection in the city and utilizes rainwater.Collecting-tank can adopt in special engineering projects such as the Olympic Games, World Expos, if build these cost height in a large number, the collecting-tank that difficulty is big solves city ponding problem, is unpractical at present.
Summary of the invention
The purpose of this invention is to provide a kind of subregion, at times, constant flow ground is along the in an organized way draining to the river course of rainwater accumulation device, storm sewer, thereby reduce the method for water on urban streets.
Technical scheme of the present invention is: a kind of method that reduces water on urban streets, in the housing estate or other do not influence the public domain such as the square of traffic, the parking lot, the place, greenery patches sets up the rainwater accumulation device, this rainwater accumulation device is done net by the branch drain of band drain discharge adjusting device with urban sewage and is communicated with, when rainy, the rainwater in zone at first flows into the rainwater accumulation device except that urban road, and the flow of pressing the setting of drain discharge adjusting device then is planned again, organized water in the rainwater accumulation device is excreted in the dried net of urban sewage by branch drain flowed out; This subregion, at times, constant flow ground along rainwater accumulation device, rainwater arm in an organized way draining of main, just can dissolve rainwater concentrated contradiction that main drain, river course drainability deficiency is caused ponding of draining in the short time, reduce the influence of ponding people's work, life.
The drain discharge adjusting device is the device that valve or gate etc. can be regulated the flow of water.
The rainwater accumulation device comprises pond body and the top cover on it.
The capacity of rainwater accumulation device, be to determine according to the rainwater accumulation index that city planning management department assigns, when rainfall during greater than the design objective of rainwater accumulation device, the rainwater in the plash can flow directly into branch drain and is excreted to urban sewage and does in the net and flow out by establishing thereon overflow mechanism.
Overflow mechanism is made of bypass channel and bleed off pipe.
Implement drainaging scheme fully in a organized way, invest little instant effect, technology is simple, and effect is remarkable.Can also significantly reduce the operating cost of urban sewerage and drainage, be example with Beijing, whenever units such as Beijing draining in rainy season group all can establishment officer and equipment carry out draining when preparing to rain ponding and speedily carry out rescue work.Have a large amount of water pumps when raining heavily and carry out draining at different ponding points.Because often greater than the design standard of rainwater pipeline, the displacement in the pipeline is saturated for amount of precipitation, the water of water pump suction gutter can not successfully be drained, and often forms recirculated water.It is little only to remain amount of precipitation, and the discharge pressure of flowing line has alleviated, and water pump is taken out ponding and just really produced effect, and ponding just can be drained.Drawing water before this is a kind of attitude, allows citizen see that relevant department has in time carried out drainage works.This attitude will spend a large amount of human and material resources, electric power, and before not having well to solve the method for ponding problem, it also is necessary making this attitude.After drainaging scheme was implemented fully in a organized way, the situation of road ponding can significantly reduce, and the degree of ponding also can alleviate.Personnel, the goods and materials of preparing emergent draining also can reduce accordingly, and power consumption also can reduce simultaneously.
Description of drawings
Fig. 1 is two class area distribution schematic diagrames in the city,
Fig. 2 is open type rainwater impoundment dedicated and drainage system schematic diagram fully in a organized way accordingly thereof,
Fig. 3 is closed rainwater impoundment dedicated and drainage system schematic diagram fully in a organized way accordingly thereof.
The specific embodiment
First kind zone among Fig. 1 is represented with 1, represents urban road, comprises motorway, nonmotorized vehicle lane and sidewalk.Second class zone among the figure represents that with 2 the neighbour who represents urban road to surround comprises other zones except that urban road such as enterprises and institutions, residential quarter, city square, urban green space.The place that also comprises road, parking space, square, greenery patches, building or the like difference in functionality in the second class zone.
Digital 1 following correspondence is first kind zone among Fig. 2, and correspondence is the second class zone below digital 2.3 is urban sewerage and drainage mains among the figure, the 4th, and branch drain, the 5th, the drain discharge adjusting device can be devices such as gate, valve.6 is bleed off pipes among the figure, the 7th, and bypass channel, the 8th, open type rainwater impoundment dedicated (greenery patches etc.), the 9th, the plant of lining, greenery patches (rainwater impoundment dedicated).10 is roads of lining, sub-district (unit) among the figure, the 11st, and the enclosure wall of sub-district (unit).
Same Fig. 2 of 1 to 6 meaning among Fig. 3.12 is closed rainwater impoundment dedicated among the figure, the 13rd, and the top cover of closed rainwater impoundment dedicated, the 14th, the outdoor road surface or the ground of sub-district (unit).
A kind of method that reduces water on urban streets comprises main drain 3, branch drain 4, bleed off pipe 6, drain discharge adjusting device 5, rainwater accumulation device.Wherein the rainwater accumulation device of rainwater impoundment dedicated formation divides more shallow open type rainwater impoundment dedicated 8 (Fig. 1) of ponding and the darker closed rainwater impoundment dedicated 12 of ponding (top cover 13 to be arranged, Fig. 3) two kinds.All rainwater in the second class zone, city all will flow into the rainwater impoundment dedicated 8 or 12 of rainwater accumulation device earlier, drain to main drain 3 through branch drain 4 again.Rainwater flows to the flow size of branch drain and will be regulated by flow regulator 5, and amount of precipitation is greater than when setting value, and a part of rainwater can accumulate in rainwater impoundment dedicated 8 or 12.
When being higher than design load, the water level of rainwater impoundment dedicated 8 can discharge through bleed off pipe 6 by bypass channel 7.When being higher than design load, the water level of rainwater impoundment dedicated 12 can discharge by bleed off pipe 6.Height at the bottom of the rainwater impoundment dedicated should be not less than the height of gutter, and the water in the rainwater impoundment dedicated can drain with the gravity flow mode like this.
The amount of precipitation in city is during greater than the design standard of flowing line, ponding is inevitable. be ponding equally, rainwater is disperseed to be accumulated in in the less relatively zone of people's life, work influence, and to collect in road etc. far better to effect in the relatively large zone of people's life, work influence than concentrating.
Technical scheme proposed by the invention---" draining fully in a organized way " is the realistic plan that solves city ponding problem.This scheme implementation is simple, cost is low, the duration is short.Implement to reduce the influence of ponding greatly after this scheme to the city.
Urban sewerage and drainage at present all is that promptly drainage path is organized along storm sewer in an organized way draining to the river course, just part draining in a organized way of this draining in a organized way.The subregion, at times, constant flow ground in an organized way draining of river course, is only draining fully in a organized way along storm sewer.
Zone in the city can be divided into two classes.First kind zone is a urban road, zone (comprising motorway, nonmotorized vehicle lane, sidewalk) shown in 1 among Fig. 1.The second class zone is the neighbour that urban road surrounds, zone (comprising other zones except that urban road such as enterprises and institutions, residential quarter, city square, urban green space) shown in 2 among Fig. 1.The place that also comprises road, parking space, square, greenery patches, building or the like difference in functionality in the second class zone.
First kind zone is that the requirement gamut can not ponding.All can short time ponding when rainy in the second class zone except that road, other places of building, these place short time ponding to people's work, live that to influence be not very big.
With residential quarters is example, and there are indexs such as floor, building density, building height, ratio of green space, duration of sunshine in urban planning authorities when examining the programme of planning to build the residential quarters project.Can increase a rainwater accumulation index again, rainwater accumulation index is by the factors such as drainability of planning authorities according to amount of precipitation, gutter, minimum rainwater accumulation requirement to the project planning proposition, be in the project planning zone, to effluxing, short time ponding can not influence the minimum rainwater accumulation of work, life to rainwater.Rainwater accumulation index can be assigned in a variety of forms.Can be to specify to accumulate the some cubic meters of rainwater, for example 1000 cubic metres.Also can be to assign index with the form of amount of precipitation, for example the rainwater accumulation index of assigning for certain sub-district is 50 millimeters, be exactly that amount of precipitation is during smaller or equal to 50 millimeters, the rainwater of sub-district can all be accumulated in the sub-district, do not efflux the basic living needs that yet can not influence community resident, promptly road not ponding (road in greenery patches, sub-district and the square be not included in), building do not intake, bicycle parking lot not ponding, Parking Area depth of accumulated water suitably (for example being not deeper than 150 millimeters).Increase a rainwater accumulation index, just when the vertical design of project planning, embody to some extent, can not cause significant burden to project.
With residential quarters is example, and the ratio of green space of residential quarters generally is not less than 30%.If requiring the rainwater accumulation index of sub-district is 50 millimeters, all be accumulated in 30% the greenery patches of sub-district area, 50 millimeters/30%=166.7 millimeter, the depth of accumulated water in the greenery patches just can meet the demands for about 170 millimeters.If can accumulating the zone of rainwater, the sub-district has only 20% area, 50 millimeters/20%=250 millimeters deep.If requiring the rainwater accumulation index of sub-district is 80 millimeters, 80 millimeters/30%=266.7 millimeters deep, 80 millimeters/20%=400 millimeters deep.A plot planning has the polylith greenery patches, and rainwater also disperses to be accumulated in the polylith greenery patches.These are used to greenery patches of accumulating rainwater etc., are exactly open type rainwater impoundment dedicated.The degree of depth that the sub-district open type is accumulated rainwater should not if depth of accumulated water will have safeguard procedures in time more than 300 millimeters, prevent that the situation of drowning from taking place greater than 300 millimeters.
Drainaging scheme fully in a organized way disperses the part rainwater to be accumulated in short time ponding to work, the less zone of life influence exactly planned and organizedly, and planned and organized the rainwater that will accumulate is progressively drained.With the mode of time of planned and organized prolongation rain drainage, dissolve rainwater and in the short time, concentrate drainage and drainage pipe, river course drainability deficiency to cause the contradiction of ponding, reduce ponding to people's work, the influence of living.
It also is example with Beijing, getting 1 square kilometre analyzes. and Pekinese's road area ratio only is 12%, current international practice standard well below 25%, road area ratio by 25% during following surface analysis calculates, because be disadvantageous relatively situation like this. other conditions are: this zone trunk sewer design standard is 1 year one chance, be equivalent to per hour 36 millimeters rainfall, can resist per hour 36 millimeters rainfall. by the actual torrential rain analysis that per hour runs into 80 millimeters of amount of precipitations. 30% of the second class region area is the scope that can accumulate rainwater.
1 square kilometre of 1000 meters x1000 rice=1000000 square metre
Wherein first kind zone (urban road) area is:
1000000 square metres x25%=250000 square metre
The second class region area is: 1000000 square metres x75%=750000 square metre
The site area that can be used for accumulating rainwater in the second class zone is:
750000 square metres x30%=225000 square metre
The standard of drainage of trunk sewer (ability) is 36 millimeters amount of precipitations per hour, are the amount of precipitations of 1 square kilometre of gross area, promptly |:
1000000 square metres of x0.036 rice/per hour=36000 cubic metre/per hour
The actual amount of precipitation in first kind zone:
250000 square metres of x0.08 rice/per hour=20000 cubic metre/per hour
36000 cubic metres/per hour-20000 cubic metre/per hour=16000 cubic metre/per hour (main drain also has 16000 cubic metres/residual drainage ability hourly when draining first kind zone rainfall, these 16000 cubic metres/drainability hourly can be drained a part of amount of precipitation in the second class zone simultaneously)
The actual amount of precipitation in the second class zone:
750000 square metres of x0.08 rice/per hour=60000 cubic metre/per hour
60000 cubic metres/per hour-16000 cubic metre/per hour=44000 cubic metre/per hour (but 44000 cubic metres rainwater need be accumulated in the second class zone in 225000 square metres the ponding place)
44000 cubic metres/225000 square metres=0.196 meter (about 200 millimeters, the second class zone to accumulate the mean depth of catchmenting in the place of rainwater be 200 millimeters) exactly
16000 cubic metres/per hour/750000 square metre=0.0213 meter/per hour (21.3 millimeters/per hour, promptly the per hour outer vent flow of rainwater reality in the second class zone equals per hour 21.3 millimeters amount of precipitation of this zone)
If it is 20000 square metres that the floor space of a sub-district is arranged in this 1 square kilometre of zone
The flow that this sub-district rainwater pipe of 20000 square metres of x0.0213 rice/per hour=426 cubic metre/per hour effluxes with gate be controlled at per hour 426 cubic metres/per hour
The amount of rainfall that accumulate this sub-district:
(20000 square metres of x0.08 rice)-426 cubic metres=1174 cubic metres
1174 cubic metres/20000 square metres=0.0587 meter (58.7 millimeters, promptly the rainwater accumulation index of this sub-district is 58.7 millimeters, rounding is 59 millimeters)
1174 cubic metres/426 cubic metres/per hour=2.76 hour (1174 cubic metres of rainwater accumulating of this sub-district need when not raining 2.76 hours just can emptying)
According to above-mentioned analysis as can be seen the Drainage Design standard be per hour 36 millimeters zone of amount of precipitation, move by the mode of draining fully in a organized way, the torrential rain road that bears 80 millimeters of amount of precipitations in first hour can ponding.Per hour ining succession down 36 millimeters amount of precipitation road after one hour also can ponding, can not cause big adverse effect to people's work, life yet.Total amount of precipitation reaches 116 millimeters (80+36) in succession two hours, and the probability that occurs in most of cities all is very little.
If the analysis of front is one of operating scheme of water discharge technology fully in a organized way. first hourly rainfall depth is 36 millimeters, the drain discharge in the second class zone constant (equaling per hour 21.3 millimeters amount of precipitation of this zone), second hourly rainfall depth reaches 67 millimeters roads still can ponding. and the amount of precipitation that such two hours roads can ponding is 103 millimeters (36+67), also is far longer than 72 millimeters (36+36).
Different sub-district (unit) is according to actual conditions, and rainwater accumulation index also can be different, has the index with good conditionsi of needs can be high, do not have the old residential district (shanty town, villages within the city etc.) of condition not establish rainwater and accumulates index.The rainwater accumulation index of each sub-district (unit) can be taken all factors into consideration by city planning management department according to the amount of precipitation in city, urban operating mechanism condition etc. and set rainwater accumulation index.
Draining will be formulated drainaging scheme according to parameters such as the residing geographical position of accumulating capability, daytime or night, sub-district or unit of the variation of the section in drain header and river course, amount of precipitation, each rainwater impoundment dedicated and importance fully in a organized way.Divide the order of importance and emergency planned organized drainage, departments of government will be worked out multiple draining prediction scheme.
Drainage system is set up very simple fully in a organized way.Divide the embodiment under grassroot project and two kinds of conditions of original project.
Grassroot project:
Drainaging scheme is relatively simple fully in a organized way in enforcement in grassroot project.Past when the outdoor vertical design of carrying out object of construction production, consider rainwater along road and below the rainwater pipe to effluxing, mostly be relatively low with the absolute altitude design of road.As long as it is the highest to change the absolute altitude of building entrance into, the absolute altitude that is led to the road of each building entrance by gate, sub-district (unit) takes second place, and ponding such as greenery patches, square etc. in short-term are minimum to the absolute altitude that work, life influence less place.The minimum place of absolute altitude, these sub-districts (unit) is exactly the rainwater impoundment dedicated (Fig. 2) that is used to accumulate rainwater.The area of rainwater impoundment dedicated and depth of accumulated water are that the rainwater accumulation index that the designer assigns according to city planning management department calculates in conjunction with plane planning.For safety, the open type depth of accumulated water should not be above 300 millimeters.All rainwater all will be pooled to each rainwater impoundment dedicated earlier in the newly-built sub-district (unit), and then planned and organized excreting out.This open type rainwater impoundment dedicated does not need to increase construction cost substantially.
Places such as the relatively low greenery patches of absolute altitude, square, its function be not affected (just can not plant water funk especially plant in the greenery patches) when not raining.People did not enter the place of ponding such as greenery patches and square before two, three hours ponding had been arranged when raining and behind the rain, can accept yet.
Large public building, commercial building that building density is higher, there are not enough places to accumulate the place as the open type rainwater, can build the underground closed rainwater impoundment dedicated of top cover and accumulate rainwater (Fig. 3), the rainwater of accumulating like this can be more deeply, and the pond floor space is less relatively.Absolute altitude will be higher than the municipal gutter at the bottom of the rainwater impoundment dedicated, and the mode that rainwater can flow automatically drains, and general municipal rainwater pipe buried depth is more than 1 meter, and collecting-tank can be too not dark yet.So collecting-tank can adopt the such cost that just can meet the demands of brick mix structure construction (the direct support slot template of capital is used brick wall all around, tile work at the bottom of the pond for single footing, short column) lower again.
Newly-built public building, the commercial building of part can consider that the roof accumulates rainwater in short-term.Can be with all or part of requirement construction on roof by open type rainwater impoundment dedicated, the rain water on roof pipe also will have relevant auxiliary facilities.
Original project
When original sub-district (unit) is built, there is not to consider to accumulate the problem of rainwater. increase the function of accumulating rainwater, if need carry out some improvement projects. the green area of sub-district (unit) is enough big, the unnecessary earthwork is transported, the absolute altitude that only needs to reduce the greenery patches just can form rainwater impoundment dedicated (Fig. 2), if also need original rainwater pipe is carried out some transformations. the area in greenery patches, sub-district (unit) is less, block entrance is higher relatively, the greenery patches absolute altitude be can reduce and road surface and absolute altitude that can not the ponding place raised simultaneously, enlarge catchment area. at this moment greenery patches ponding is the darkest, other place depth of accumulated water take second place, if road can ponding. sub-district (unit) green area is less, block entrance is not high again, original road can not be increased, the absolute altitude that can reduce greenery patches and place that can ponding satisfies the requirement of accumulating rainwater. and the original like this ground that paves will be broken from newly mating formation, and expense is higher. and also can adopt underground closed rainwater impoundment dedicated (Fig. 3) to accumulate rainwater. original in a word project reconstruction will be carried out according to actual conditions.
The drainage reconstruction fully in a organized way in city can progressively be carried out according to the order of severity subregion of road ponding.Grassroot project all will be considered the factor of draining fully in a organized way.Two trienniums are arranged, and the serious problem of water on urban streets can be eased greatly.
Claims (5)
1. method that reduces water on urban streets, it is characterized in that: in the housing estate or other do not influence the public domain of traffic such as square, parking lot, the place, greenery patches sets up the rainwater accumulation device, this rainwater accumulation device is done net by the branch drain of band drain discharge adjusting device with urban sewage and is communicated with, when rainy, the rainwater in zone at first flows into the rainwater accumulation device except that urban road, and planned and organized again the water in the rainwater accumulation device is excreted to of setting by the drain discharge adjusting device in the dried net of urban sewage by branch drain of flow flowed out then; This subregion, at times, constant flow ground along rainwater accumulation device, rainwater arm in an organized way draining of main, just can dissolve rainwater concentrated contradiction that main drain, river course drainability deficiency is caused ponding of draining in the short time, reduce the influence of ponding people's work, life.
2. the method for minimizing water on urban streets according to claim 1 is characterized in that: the drain discharge adjusting device is the device that valve or gate etc. can be regulated the flow of water.
3. the method for minimizing water on urban streets according to claim 1 is characterized in that: the rainwater accumulation device comprises pond body and the top cover on it.
4. the method for minimizing water on urban streets according to claim 3, it is characterized in that: the capacity of rainwater accumulation device, be to determine according to the rainwater accumulation index that city planning management department assigns, when rainfall during greater than the design objective of rainwater accumulation device, the rainwater in the plash can flow directly into branch drain and is excreted to urban sewage and does in the net and flow out by establishing thereon overflow mechanism.
5. the method for minimizing water on urban streets according to claim 4 is characterized in that: overflow mechanism is made of bypass channel and bleed off pipe.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102535625A (en) * | 2012-01-05 | 2012-07-04 | 天津市赛英工程建设咨询管理有限公司 | Method for designing rainwater drainage system |
| CN104727423A (en) * | 2015-02-06 | 2015-06-24 | 天津大学 | Intelligent dispatching system and method for urban inland inundation water drainage based on traffic videography system |
| CN105569160A (en) * | 2015-12-25 | 2016-05-11 | 华东建筑设计研究院有限公司 | Structure for water storage and drainage of pipeline |
| CN107460936A (en) * | 2017-09-22 | 2017-12-12 | 陕西路盾公路工程有限公司 | Equipment for clearing up low-lying place's rainwater |
| CN109372088A (en) * | 2018-12-10 | 2019-02-22 | 南昌大学 | A kind of self-closed inlet for stom water of easy cleaning |
| CN111677084A (en) * | 2020-06-01 | 2020-09-18 | 上海熊猫机械(集团)有限公司 | Urban street rainwater allocation and discharge system |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2526352Y (en) * | 2002-02-07 | 2002-12-18 | 张英 | Water storage pipe for use under green land of city |
| CN1861920A (en) * | 2006-06-22 | 2006-11-15 | 范江鹏 | Life area rain water collecting treating using device |
| CN201068627Y (en) * | 2007-07-11 | 2008-06-04 | 张淼 | Large area roof rainwater intelligentized drainage apparatus |
| JP5117793B2 (en) * | 2007-08-29 | 2013-01-16 | タキロン株式会社 | Underground water tank |
| JP2009108534A (en) * | 2007-10-29 | 2009-05-21 | Sekisui Chem Co Ltd | Rainwater storage facility and monitoring-management system for rainwater storage facility |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102535625A (en) * | 2012-01-05 | 2012-07-04 | 天津市赛英工程建设咨询管理有限公司 | Method for designing rainwater drainage system |
| CN104727423A (en) * | 2015-02-06 | 2015-06-24 | 天津大学 | Intelligent dispatching system and method for urban inland inundation water drainage based on traffic videography system |
| CN105569160A (en) * | 2015-12-25 | 2016-05-11 | 华东建筑设计研究院有限公司 | Structure for water storage and drainage of pipeline |
| CN107460936A (en) * | 2017-09-22 | 2017-12-12 | 陕西路盾公路工程有限公司 | Equipment for clearing up low-lying place's rainwater |
| CN107460936B (en) * | 2017-09-22 | 2018-06-22 | 李建勋 | For clearing up the equipment of low-lying place's rainwater |
| CN109372088A (en) * | 2018-12-10 | 2019-02-22 | 南昌大学 | A kind of self-closed inlet for stom water of easy cleaning |
| CN111677084A (en) * | 2020-06-01 | 2020-09-18 | 上海熊猫机械(集团)有限公司 | Urban street rainwater allocation and discharge system |
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| Publication number | Publication date |
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| CN101705716B (en) | 2012-04-18 |
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