CN102966165A - System for eliminating and reducing urban inland inundation by utilizing adsorption layer of green area and inland inundation eliminating and reducing method - Google Patents
System for eliminating and reducing urban inland inundation by utilizing adsorption layer of green area and inland inundation eliminating and reducing method Download PDFInfo
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Abstract
The invention relates to a system for eliminating and reducing urban inland inundation by utilizing an adsorption layer of a green area and an inland inundation eliminating and reducing method. The system is mainly formed by a main conduit, a branch conduit, a vertical deep well, an adsorption material layer, a vegetation and soil layer, a water inlet and the like. Preferably, the adsorption layer of the green area is filled with building waste residues with the porous characteristic; and water is temporarily stored in the green area by utilizing the water adsorption performance of a porous material, so that functions of eliminating a peak, reducing emission and relieving the inland inundation are implemented. Meanwhile, the vertical deep well is arranged in the adsorption layer of the green area to collect the adsorbed rainwater, so that not only can underground water sources be supplemented, but also water can be pumped to irrigate plants in the green area nearby and fresh water resources are saved; and after the rainwater is adsorbed and purified by the porous material, most of harmful substances are removed and the effect of reducing pollution to underground water is achieved. The method has the obvious advantages of good rainwater adsorption effect, simple and convenient construction process, low cost, convenience for maintenance, long service life and the like.
Description
Technical field
The present invention is a kind of system that utilizes the green area adsorption layer to subdue the city waterlogging, the invention still further relates to the method for utilizing this system to subdue the city waterlogging.
Background technology
Over nearly 20 years, owing to reasons such as Global climate change, population increase and urbanization process quickenings, cause China's city waterlogging disaster to take place frequently, cause heavy casualties and property loss.The city waterlogging not only affects the normal development of urban economy, is more threatening townsfolk's life security.The people life property safety is guaranteed in the loss that causes in order to reduce the waterlogging disaster, demands urgently adopting suitable method to postpone or eliminates the generation of city waterlogging.At present, mainly contain two kinds of viewpoints: the one, the design standard of raising urban underground water drainage pipe net; The 2nd, utilize urban wetland, the implicit rain flood in lake.It is reported all furnish a huge amount of money for for pipeline modification in the city that serious waterlogging occurs, as: Nanchang in recent years especially expensive more than 20 hundred million yuan transform the Urban Underground drainage systems, but finally still waterlogging take place frequently.As seen, the city waterlogging is not only the problem of drainage pipe, strengthened especially the problem of flood discharge difficulty owing to hardened ground, greenery patches minimizing, runoff coefficient, as: Beijing surpasses 80% ground by the covering of the impermeable materials such as concrete, pitch, and rainwater can't infiltrate through underground at all.For solving urban rainwater large-scale footpath flow problem occurs, on-site elimination is best method, but needs a place of receiving rainwater, such as the rainwater regulating reservoir.Based on the present situation that the Chinese city population density constantly increases, urban land is more and more nervous, does not possess the condition that waterlogging is subdued in the special place of planning.Therefore, be badly in need of seeking other space and receive rainwater.
Summary of the invention
For the deficiencies in the prior art, purpose of the present invention is exactly will provide a kind of to utilize the green area adsorption layer to subdue the system of city waterlogging and utilize this system to subdue the method for city waterlogging, utilize special pipeline that the part rainwater is introduced the green area adsorption layer, by the good absorbent function of green area adsorption layer, rainwater is saved.Can peak clipping reduce discharging, alleviate waterlogging; Again can recharge of groundwater, irrigate green area vegetation, the freshwater resources of saves valuable.
The object of the present invention is achieved like this: a kind of system that utilizes the green area adsorption layer to subdue the city waterlogging, comprise a vertical deep-well, vertical deep-well is provided with well lid, vertical deep-well periphery main pipe communicates with vertical deep-well by the main pipe passage that is arranged on the vertical deep-well, at main pipe a plurality of conduit that communicates with main pipe are set, vertical deep-well runs through vegetation soil layer and sorbing material layer and is deep into to natural soil layer, and the vertical border of sorbing material layer and natural soil layer contact portion are provided with anti-seepage geotextile.
Described sorbing material layer adopts the porous building castoff to make.
Be provided with the maintenance ladder in the vertical deep-well.
The water inlet of main pipe is provided with filter screen.
Pore is set around the tube wall of main pipe.
The vertical deep-well borehole wall adopts concrete masonry units, is provided with borehole wall perforate around it.
The perforate position of the pore that arranges around the tube wall of main pipe is changed to some extent by its position difference, in level, level and vertical turning point, and " U " pipe circular curve part all adopts the not perforate of main pipe first half perforate Lower Half, the then perforate around the pipe of straight catheter part.
Conduit partly is communicated with the vertical duct of main pipe, and the conduit 2-3 degree that is inclined upwardly also is provided with the arm pore on the tube wall of a conduit, and the arm pore all is opened in and props up conduit top.
The method of city waterlogging is subdued by a kind of system that utilizes the green area adsorption layer to subdue the city waterlogging, and when Urban Rain occured, rainwater entered sedimentation basin and enters main pipe and a conduit, and a part of rainwater enters into vertical deep-well through the main pipe passage; Part rainwater enters into sorbing material layer from the perforate of main pipe and conduit and stores, and by the borehole wall perforate seepage flow on the vertical deep-well borehole wall in vertical deep-well.
Concentrate the rainwater in the vertical deep-well to be used for recharging underground water or to extract the vegetation that is used for irrigating the vegetation soil layer out.
The method of utilizing the green area adsorption layer to subdue the system of city waterlogging and subdue waterlogging provided by the invention has following beneficial effect:
(1) alleviates the burden of urban drainage pipe network by the green area adsorption layer, and conserve groundwater resources;
(2) recharge underground water by the green area adsorption layer, reduced the sedimentation that causes ground because of groundwater abstraction;
(3) adsorption layer implicit rainwater in green area can for the ground flora growth, have been saved valuable freshwater resources effectively;
(4) the green area adsorption layer can be used the porous building castoff, for the building waste in city recycling provides new channel.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples.
Fig. 1 is the green area complete layout.
Fig. 2 is the water inlet arrangement diagram.
Fig. 3 is a conduit drawing.
Fig. 4 is the main pipe node diagram.
Fig. 5 is the water inlet lateral view.
Fig. 6 is shaft structure figure.
Among Fig. 1: 1-1, vegetation soil layer, 1-2, sedimentation basin, 1-3, anti-seepage geotextile, 1-4, sorbing material layer, 1-5, natural soil layer, 1-6, vertical deep-well, 1-7, main pipe, 1-8, a conduit, 1-9, maintenance ladder, 1-10, well lid, 1-11, water inlet, 5-1, filter screen, 6-1, main pipe passage.
The specific embodiment
Structure of the present invention is shown in Fig. 1-6: a kind of system that utilizes the green area adsorption layer to subdue the city waterlogging, comprise a vertical deep-well 1-6, vertical deep-well 1-6 is provided with well lid 1-10, vertical deep-well 1-6 periphery main pipe 1-7 communicates with vertical deep-well 1-6 by the main pipe passage 6-1 that is arranged on the vertical deep-well 1-6, at main pipe 1-7 a plurality of conduit 1-8 who communicates with main pipe 1-7 are set, vertical deep-well 1-6 runs through vegetation soil layer 1-1 and sorbing material layer 1-4 and is deep into to natural soil layer 1-5, and the vertical border of sorbing material layer 1-4 and natural soil layer 1-5 contact portion are provided with anti-seepage geotextile 1-3.
Described sorbing material layer 1-4 adopts the porous building castoff to make, such as discarded loam brick, cinder etc.
Be provided with maintenance ladder 1-9 in the vertical deep-well 1-6, be used for keeping in repair vertical deep-well.
The water inlet 1-11 of main pipe 1-7 is provided with filter screen 5-1, stops up to prevent main pipe.
Pore 1-12 is set around the tube wall of main pipe 1-7.
The vertical deep-well 1-6 borehole wall adopts concrete masonry units, is provided with borehole wall perforate 1-13 around it.
The position of the perforate of the pore 1-12 that arranges around the tube wall of main pipe 1-7 is changed to some extent by its position difference, in level, level and vertical turning point, and " U " pipe circular curve part all adopts the not perforate of main pipe 1-7 first half perforate Lower Half, the then perforate around the pipe of straight catheter part.
Conduit 1-8 partly is communicated with the vertical duct of main pipe 1-7, and the conduit 1-8 2-3 degree that is inclined upwardly also is provided with the arm pore on the tube wall of a conduit 1-8, and the arm pore all is opened in and props up conduit 1-8 top.
Implementation step of the present invention is as follows:
1. Farm Planning: when building the green area, according to fixed green area elevation and zone downwards the certain degree of depth of excavation comprise the thickness of sorbing material layer 1-4 thickness and the required vegetation soil layer of vegetation growth 1-1.
2. material backfill and pipe arrangement: in the afforested areas that has dug, adopt the successively construction technology of construction, successively fill.In the scope of sorbing material layer 1-4, according to calculating good main pipe 1-7 position, to install section by section from bottom to top, vertical layout of main pipe 1-7 pipeline number is according to schedule equidistantly laid and is seen Fig. 5.Wherein L is two main pipe 1-7 center to center distance.
The position of conduit 1-8 also according to calculate good spacing by main pipe, successively, install section by section.
Vertical deep-well 1-6 adopts enclosure of concrete, on the wall perforate be borehole wall perforate 1-13 so that the water among the sorbing material layer 1-4 can be along duct seepage flow to vertical deep-well 1-6 in.The peripheral part that contacts with sorbing material layer 1-4 of tapping of main pipe 1-7, vertical deep-well 1-6, a conduit 1-8 need to arrange loaded filter simultaneously.
3. water inlet is arranged: when construction proceeded to the intersection of the approaching road surface that need to harden and green area, meeting and original urban discharging pipeline met, and for not introducing the green area by the water that original drainage pipe is drained, need to water inlet be set at this intersection.Leading mouthful of below certain area of water inlet arranges sedimentation basin sedimentation basin 1-2 again on the basis in original gutter, before rainwater enters urban discharging pipeline and green area the silt in the current and rubbish are carried out primary sedimentation, prevents that foreign material from stopping up drainage pipe.The height placement of water inlet 1-11 is seen Fig. 2.S, the sedimentation basin degree of depth; H, depth of drainage ditch; H, water inlet is apart from the distance of bottom, gutter.The main pipe mouth of pipe at each water inlet all adopts filter screen 5-1, tackles the floating substance of some large particle diameters, prevents that it from blocking pipeline.
4. later maintenance: maintenance ladder 1-9 is set in vertical deep-well 1-6, the regular sediment that carries out the labor cleaning shaft bottom, guarantee that the sediment in shaft bottom is not because too much blocking vertical deep-well 6-1, affect the normal operation of pipeline, regularly extract simultaneously the water in the well, water in the sorbing material layer can freely be oozed out for adsorbing the rainwater vacating space next time, thereby guarantee that it has the repeatedly function of absorption.
The sharp example of method of waterlogging is subdued by the system that utilizes the green area adsorption layer to subdue the city waterlogging:
When Urban Rain occured, rainwater entered sedimentation basin 1-2 and enters main pipe 1-7 and a conduit 1-8, and a part of rainwater enters into vertical deep-well 1-6 through main pipe passage 6-1; Part rainwater enters into sorbing material layer 1-4 from the perforate of main pipe 1-7 and conduit 1-8 and stores, and by the borehole wall perforate 1-13 seepage flow on the vertical deep-well 1-6 borehole wall in vertical deep-well 1-6.
Concentrate the rainwater among the vertical deep-well 1-6 to be used for recharging underground water or to extract the vegetation that is used for irrigating vegetation soil layer 1-1 out.
Stable adsorbance with adsorption layer is about 28m
3Be example, its water absorption course is about 0.8h, and then the rate of adsorption is about 35m
3/ h; The about 30h of pump process, then desorption rate is about 0.93m
3/ h.Storm Rainfall Standard according to 50～99.9mm/d calculates, and can subdue 8750m by the adsorption layer that 20m is wide, 8m is high, 1 meter thick fully
2The rainwater that hardened ground compiles, it is very remarkable that the waterlogging effect is subdued in this explanation green area, but as run into the rainwater that continuous rainstorm then needs timely pumpback adsorption layer, vacate memory space for again subduing the rain flood.
Claims (10)
1. system that utilizes the green area adsorption layer to subdue the city waterlogging, it is characterized in that: comprise a vertical deep-well (1-6), vertical deep-well (1-6) is provided with well lid (1-10), the vertical peripheral main pipe of deep-well (1-6) (1-7) communicates with vertical deep-well (1-6) by the main pipe passage (6-1) that is arranged on the vertical deep-well (1-6), at main pipe (1-7) a plurality of conduit (1-8) that communicates with main pipe (1-7) are set, vertical deep-well (1-6) runs through vegetation soil layer (1-1) and sorbing material layer (1-4) and is deep into to natural soil layer (1-5), and the vertical border of sorbing material layer (1-4) and natural soil layer (1-5) contact portion are provided with anti-seepage geotextile (1-3).
2. the system that utilizes the green area adsorption layer to subdue the city waterlogging according to claim 1 is characterized in that: described sorbing material layer (1-4) adopts the porous building castoff to make.
3. the system that utilizes the green area adsorption layer to subdue the city waterlogging according to claim 1 is characterized in that: be provided with maintenance ladder (1-9) in the vertical deep-well (1-6).
4. the system that utilizes the green area adsorption layer to subdue the city waterlogging according to claim 1, it is characterized in that: the water inlet (1-11) of main pipe (1-7) is provided with filter screen (5-1).
5. it is characterized in that according to claim 1 or the 4 described systems that utilize the green area adsorption layer to subdue the city waterlogging: around the tube wall of main pipe (1-7), pore (1-12) is set.
6. the system that utilizes the green area adsorption layer to subdue the city waterlogging according to claim 1 is characterized in that: vertical deep-well (1-6) borehole wall adopts concrete masonry units, is provided with borehole wall perforate (1-13) around it.
7. the system that utilizes the green area adsorption layer to subdue the city waterlogging according to claim 5, it is characterized in that: the position of the perforate of the pore (1-12) that arranges around the tube wall of main pipe (1-7) is changed to some extent by its position difference, in level, level and vertical turning point, and " U " pipe circular curve part all adopts the not perforate of main pipe (1-7) first half perforate Lower Half, the then perforate around the pipe of straight catheter part.
8. the system that utilizes the green area adsorption layer to subdue the city waterlogging according to claim 1, it is characterized in that: a conduit (1-8) partly is communicated with the vertical duct of main pipe (1-7), conduit (1-8) the 2-3 degree that is inclined upwardly, also be provided with the arm pore on the tube wall of a conduit (1-8), the arm pore all is opened in conduit (1-8) top.
9. utilize system claimed in claim 1 to subdue the method for city waterlogging, it is characterized in that: when Urban Rain occurs, rainwater enters sedimentation basin (1-2) and enters main pipe (1-7) and a conduit (1-8), and a part of rainwater enters into vertical deep-well (1-6) through main pipe passage (6-1); Part rainwater enters into sorbing material layer (1-4) storage from the perforate of main pipe (1-7) and a conduit (1-8), and arrives in the vertical deep-well (1-6) by borehole wall perforate (1-13) seepage flow on vertical deep-well (1-6) borehole wall.
10. method of subduing the city waterlogging according to claim 9 is characterized in that: concentrate the rainwater in the vertical deep-well (1-6) to be used for recharging underground water or to extract the vegetation that is used for irrigating vegetation soil layer (1-1) out.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210450678.0A CN102966165B (en) | 2012-11-12 | 2012-11-12 | System for eliminating and reducing urban inland inundation by utilizing adsorption layer of green area and inland inundation eliminating and reducing method |
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| CN201210450678.0A CN102966165B (en) | 2012-11-12 | 2012-11-12 | System for eliminating and reducing urban inland inundation by utilizing adsorption layer of green area and inland inundation eliminating and reducing method |
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| CN102966165B CN102966165B (en) | 2015-05-06 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103821217A (en) * | 2014-02-17 | 2014-05-28 | 广州市市政工程设计研究院 | Low-lying green space flow limiting facility for relieving small-watershed waterlogging disaster of city |
| CN106555430A (en) * | 2017-01-04 | 2017-04-05 | 肖刚 | Heat-extraction system is received in a kind of sponge type rain penetration |
| CN106567448A (en) * | 2016-11-07 | 2017-04-19 | 合浦县市政管理局 | Water draining, water retention and irrigation system for gardens and parks |
| CN108551954A (en) * | 2018-03-14 | 2018-09-21 | 上海市园林科学规划研究院 | Low-rise building ecological green land structure and method |
| CN109235541A (en) * | 2018-11-23 | 2019-01-18 | 高秀清 | water storage device |
| CN110146654A (en) * | 2019-05-30 | 2019-08-20 | 徐州市水利科学研究所 | A kind of flood stain comprehensive draining index Test device and its application method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| 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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| CN110146654A (en) * | 2019-05-30 | 2019-08-20 | 徐州市水利科学研究所 | A kind of flood stain comprehensive draining index Test device and its application method |
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Effective date of registration: 20210709 Address after: 443100 group 3, liaojialin village, xiaoxita, Yiling District, Yichang City, Hubei Province Patentee after: Yichang Hongqian environmental protection building materials Co., Ltd Address before: 443002 No. 8, University Road, Yichang, Hubei Patentee before: CHINA THREE GORGES University |
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