CN103821217B - Low-lying green space flow limiting facility for relieving small-watershed waterlogging disaster of city - Google Patents
Low-lying green space flow limiting facility for relieving small-watershed waterlogging disaster of city Download PDFInfo
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- CN103821217B CN103821217B CN201410053008.4A CN201410053008A CN103821217B CN 103821217 B CN103821217 B CN 103821217B CN 201410053008 A CN201410053008 A CN 201410053008A CN 103821217 B CN103821217 B CN 103821217B
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Abstract
The invention discloses a low-lying green space flow limiting facility for relieving a small-watershed waterlogging disaster of a city. The low-lying green space flow limiting facility comprises low-lying green spaces arranged on the periphery of a road, wherein edges of the low-lying green spaces are lower than the surface of the road; the elevations of the low-lying green spaces are gradually reduced towards the middles so that a middle low-point area for storing rainwater is formed; and the middle low-point area is provided with a catch basin which is connected with a municipal drainage pipe network. By using the low-lying green space flow limiting facility, rainwater on the surface of the road is stored in the peripheral low-lying green spaces, and then is drained in the municipal drainage pipe network through the catch basin of the middle low-point area. By the design, the water logging time of the low-lying green spaces is shortened, water in soil of the green spaces is drained, the number of rainwater openings in sides of the road is reduced, the water drainage ability of the existing municipal drainage pipe network is sufficiently utilized, blockage is relieved, long-time and high-quantity rainstorm can be handled easily, heavy rain which was not encountered in the past 50 years can be effectively handled, requirements on a new city water drainage and waterlogging prevention outline can be met, the planning design on the low-lying green spaces is improved fundamentally, and the small-watershed waterlogging disaster of the city is relieved.
Description
Technical field
The present invention is used for municipal sewerage engineering field, particularly relates to a kind of Low elevation greenbelt current limliting facility alleviating urban catchments effectiveness factors.
Background technology
Low elevation greenbelt (is also called in " recessed greenery patches ", be referred to as in the application " Low elevation greenbelt ") refer to relatively lower than surrounding ground or road surface (track, sidewalk, square mat formation face etc., be below referred to as road surface) absolute altitude, can put aside, under ooze the greenery patches of self and periphery rainfall runoff.The starting point of existing Low elevation greenbelt scheme is by Low elevation greenbelt, stores stagnant rain flood as much as possible, reduces runoff coefficient, ooze condition recharge of groundwater resource, even dam for target with 100%, it is desirable to runoff coefficient to be reduced to zero under creation.
There are following 3 limitation in above-mentioned thinking: 1. Low elevation greenbelt lasts to the effect reducing runoff coefficient and changes along with heavy rain magnitude, rainfall pattern, the rainfall pattern of existing research is many based on short-duration rainstorm strength formula, be difficult to the rainfall pattern that reflection is complete comprehensively, the conclusion that its peak clipping obtained, runoff coefficient are cut down often limits with specific fringe conditions, the runoff coefficient obtained is also often less than normal, not enough to the dynamic change reflection of runoff coefficient, thus may bring adverse effect to the design of section rainwater plan.2. in order to descend impregnation to fill groundwater resources possibly as far as possible, the holdup time of rainwater in greenery patches certainly will be extended, extend the water logging time in greenery patches on the one hand, affect greenery patches and use; Long-time delay also occupies the storage capacity of regulating and storing of Low elevation greenbelt on the other hand, significantly reduces the peak clipping ability of the main rainfall peak value of reply rainfall pattern rearward.3. descend milliosmolarity increase namely to mean to decrease the rainwater flow into city planting ductwork, under low recurrence interval condition, Storm Sewer Network drainability is not fully utilized, draining and flushing ability weakens, easy increase pipeline fouling status, be degrading prominent adaptibility to response of meeting high recurrence interval heavy rain, need to increase and dredge maintenance workload clearly.
In addition, the municipal inlet for stom water of the overwhelming majority is arranged along road side at present, and former side entering type inlet for stom water, owing to forming escarpment among a small circle at inlet for stom water place, exists potential safety hazard, less employing, and what adopt at present is put down into formula inlet for stom water.Road side inlet for stom water affects the planeness on road surface on the one hand, easily produces noise; In addition, at road cleaning and under closing on retail shop and residential community situation, be subject to blocking.
Moreover, brick or the reinforced concrete structure of the many employings of current catch-basin, the borehole wall is waterproof, particularly for the rainwater well head in Low elevation greenbelt, as the borehole wall can not be permeable, then can not residual rainwater in the drainage periphery soil body, make soil be in saturation state for a long time after the rain, affect plant growth and utilization of area.
Summary of the invention
For solving the problem, the invention provides and a kind of reduce Low elevation greenbelt water logging duration, drainage soil of greenbelt and while reducing trackside inlet for stom water, give full play to existing municipal drainage pipe network drainability, minimizing is silted up, alleviates the Low elevation greenbelt current limliting facility of urban catchments effectiveness factors.
The technical solution adopted for the present invention to solve the technical problems is: a kind of Low elevation greenbelt current limliting facility alleviating urban catchments effectiveness factors, comprise the Low elevation greenbelt being located at road periphery, Low elevation greenbelt edge is lower than pavement of road, and reducing elevation gradually to middle part to form the low spot region, middle part of collected rainwater, low spot region, middle part is provided with the catch-basin connected with municipal drainage pipe network.
Be further used as the improvement of technical solution of the present invention, catch-basin adopts puts down into formula catch-basin, and catch-basin forms the well edge higher than periphery Low elevation greenbelt mud face, and arranges grid-like cover plate in well edge.
Be further used as the improvement of technical solution of the present invention, the borehole wall of catch-basin adopts sand concrete free structure, and at arranged outside loaded filter.
Be further used as the improvement of technical solution of the present invention, loaded filter comprises cobble layer and the granule layer of ecto-entad layering setting, and is wrapped in the geotextiles outside cobble layer and granule layer.
Be further used as the improvement of technical solution of the present invention, the borehole wall bottom of catch-basin is provided with the outlet pipe connected with municipal drainage pipe network, and the entry position of the inherent outlet pipe of catch-basin is provided with current limliting lock.
Be further used as the improvement of technical solution of the present invention, current limliting lock comprises base plate and some stoplogs, base plate upper end is provided with overflow water inlet breach, and forms slot post in the both sides of overflow water inlet breach, and the inner side of slot post is provided with the slot guiding stoplog to slip into overflow water inlet breach.
Be further used as the improvement of technical solution of the present invention, stoplog is the straight beam of rectangular in cross-section, base plate forms the plane can fitted with stoplog in the bottom surface of overflow water inlet breach, slot is the V-shaped groove along slot post indent, and the termination, two ends of stoplog all forms the first orientation angle rib that can coordinate with V-shaped groove and locate.
Be further used as the improvement of technical solution of the present invention, the shaft bottom of catch-basin is provided with draw-in groove, the bottom of base plate forms embedding draw-in groove and support baseboard rotates around draw-in groove with the second orientation angle rib opening or cover outlet pipe, and the bottom of base plate is also provided with some sluicing seams penetrating base plate.
Be further used as the improvement of technical solution of the present invention, the pavement of road slope aspect Low elevation greenbelt of Low elevation greenbelt periphery, the discrepancy in elevation of Low elevation greenbelt edge and pavement of road adopts the transition of face, flat gradient.
Be further used as the improvement of technical solution of the present invention, below the shaft bottom of catch-basin, be provided with substrate, the stone sand bed course that substrate comprises plain concrete basis and is positioned on the downside of plain concrete basis.
Beneficial effect of the present invention: in the Low elevation greenbelt current limliting facility of this alleviation urban catchments effectiveness factors, the rainwater of pavement of road puts aside the Low elevation greenbelt of periphery, and enters municipal drainage pipe network by the catch-basin in low spot region, middle part.The present invention is by above-mentioned design, can reach at reduction Low elevation greenbelt water logging duration, drainage soil of greenbelt and while reducing trackside inlet for stom water, give full play to existing municipal drainage pipe network drainability, minimizing is silted up, and calm reply length is lasted, the heavy rain of large rainfall, successfully manages new edition urban sewerage and drainage prevention waterlogging outline and requires to promote the 50 years one chance Storm Rainfall Standards reached, thus fundamentally improving the planning and designing of Low elevation greenbelt, reach the beneficial effect alleviating urban catchments effectiveness factors.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the invention will be further described:
Fig. 1 is plane structure schematic diagram of the present invention;
Fig. 2 is first embodiment of the invention longitudinal profile schematic diagram;
Fig. 3 is first embodiment of the invention horizontal section schematic diagram;
Fig. 4 is second embodiment of the invention longitudinal profile schematic diagram;
Fig. 5 is second embodiment of the invention horizontal section schematic diagram;
Fig. 6 is current limliting brake structure schematic diagram of the present invention;
Fig. 7 is A-A place sectional view in Fig. 6;
Fig. 8 is B-B place sectional view in Fig. 6;
Fig. 9 is stoplog structural representation of the present invention.
Detailed description of the invention
With reference to Fig. 1 ~ Fig. 9, the invention provides a kind of Low elevation greenbelt current limliting facility alleviating urban catchments effectiveness factors, comprise the Low elevation greenbelt 2 being located at road 1 periphery, Low elevation greenbelt 2 edge is lower than road 1 road surface, Low elevation greenbelt 2 and road 1 road boundary place highness change are at 30mm, and reduce elevation gradually to middle part to form the low spot region, middle part of collected rainwater, low spot region, middle part is provided with the catch-basin 3 connected with municipal drainage pipe network, substrate is provided with, the stone sand bed course 32 that substrate comprises plain concrete basis 31 and is positioned on the downside of plain concrete basis 31 below the shaft bottom of catch-basin 3.
Wherein, peripheral path 1 road surface slope aspect Low elevation greenbelt 2, rainwater is that planar diffusing enters Low elevation greenbelt 2 by road 1 road surface, give prominence to boundary zone if any road side stone, then adopt the way of interval parting, between kerbstone, reserved row's mouth sews up Low elevation greenbelt 2, stitch wide 30 ~ 50mm, spacing 600 ~ 1200mm; When centre has sidewalk to intercept, then under sidewalk, bury minor diameter rain pipe linking-up road 1 and Low elevation greenbelt 2 underground.Low elevation greenbelt 2 edge is lower than road 1 road surface 30mm, and the ratio of slope to middle part gradually with 0.5 ~ 10% reduces elevation, to expand effectively the regulate and store degree of depth and the volume of Low elevation greenbelt 2 gradually.
In the Low elevation greenbelt current limliting facility of this alleviation urban catchments effectiveness factors, the rainwater on road 1 road surface puts aside the Low elevation greenbelt 2 of periphery, and enters municipal drainage pipe network by the catch-basin 3 in low spot region, middle part.The present invention is by above-mentioned design, can reach and (not only get rid of surface water at reduction Low elevation greenbelt 2 water logging duration, still can regulate soil moisture content in time, avoid being in saturation state for a long time), drainage soil of greenbelt and while reducing trackside inlet for stom water, give full play to existing municipal drainage pipe network drainability, minimizing is silted up, calm reply is long to last, the heavy rain of large rainfall, successfully manage new edition urban sewerage and drainage prevention waterlogging outline to require to promote the 50 years one chance Storm Rainfall Standards reached, thus fundamentally improving the planning and designing of Low elevation greenbelt, reach the beneficial effect alleviating urban catchments effectiveness factors.
As the preferred embodiment of the present invention, catch-basin 3 adopts and puts down into formula catch-basin (according to the collective area size shared, single grate or two grate well are set), catch-basin 3 forms the well edge 33 higher than periphery Low elevation greenbelt 2 mud face, and in well edge 33, arrange grid-like cover plate 34.The function of catch-basin 3 is the rain flood that collection Low elevation greenbelt 2 confluxes.Wherein, well edge 33, higher than mud face, periphery greenery patches 30mm, directly pours in well to prevent silt particle; Well head arranges the cover plate 34 of self-locking ductile iron, as rain flood entrance and access hole, enters in well by grid-like design to reduce plant leaf;
As the preferred embodiment of the present invention, one of emphasis of the present invention is, the borehole wall 35 of catch-basin 3 adopts the sand concrete free structure of good water permeability, the main difference part of sand concrete free structure and ordinary concrete does not have fines, and only with coarse aggregate, cement is in order to cover the surface of coarse aggregate, and play cementation, instead of filling space, therefore cement consumption is fewer than ordinary concrete, is generally 70 ~ 150kg/m
3, medium grain size (10 ~ 20mm) selected by coarse aggregate, and should use evengranular gravel or rubble, and the water permeability of sand concrete free structure can reach 1mm/s magnitude.For avoiding the sand concrete free structure borehole wall by the silt blocking brought in soil, need loaded filter 36 be set outside well, the 150mm that loaded filter 36 is arranged by layering thick cobble layer (particle diameter 10mm) and the thick granule layer of 150mm (particle diameter 1 ~ 4mm) form, and in cobble layer and granule layer outsourcing geotextiles 37 to prevent from blocking, form an infiltration vertical shaft, so that be detained the Low elevation greenbelt 2 timely drainage after the rain of rain flood, avoid the soil body to be in saturation state for a long time, be beneficial to plant growth and greenery patches use.
As the preferred embodiment of the present invention, the borehole wall 35 bottom of catch-basin 3 is provided with the outlet pipe 4 connected with municipal drainage pipe network, and the entry position of the inherent outlet pipe 4 of catch-basin 3 is provided with current limliting lock 5.Current limliting lock 5 can select stoplog current limliting, lock hole current limliting, pipeline current limliting, weir current limliting etc.Wherein with stoplog current limliting lock pattern brief and practical the most, its function is the rain mighty torrent amount controlling to enter Storm Sewer Network flexibly, reaches current limliting object, to alleviate downstream ductwork pressure and to alleviate urban catchments waterlogging.
Concrete, current limliting lock 5 comprises base plate 51 and some stoplogs 52, and base plate 51 upper end is provided with overflow water inlet breach 53, and forms slot post 54 in the both sides of overflow water inlet breach 53, and the inner side of slot post 54 is provided with the slot 55 guiding stoplog 52 to slip into overflow water inlet breach 53.Stoplog 52 is the straight beam of rectangular in cross-section, base plate 51 forms the plane can fitted with stoplog 52 in the bottom surface of overflow water inlet breach 53, slot 55 is the V-shaped groove along slot post 54 indent, and the termination, two ends of stoplog 52 all forms the first orientation angle rib 56 that can coordinate with V-shaped groove and locate.The shaft bottom of catch-basin 3 is provided with draw-in groove 38, and the bottom of base plate 51 forms embedding draw-in groove 38 and support baseboard 51 rotates around draw-in groove 38 the second orientation angle rib 57 opening or cover outlet pipe 4.The present invention limits by the number of stoplog 52 on base plate 51 flow that catch-basin 3 enters outlet pipe 4; When in emergency circumstances, when needing to increase rainwater conveyance capacity, can the base plate 51 of current limliting lock 5 being toppled over to outlet pipe 4 to going out side, can current-limiting function be removed.
In addition, the bottom of base plate 51 is also provided with some sluicing seams 58 penetrating base plate 51, to drain the ponding in net rainfall well 3, avoids mosquito to grow.
Certainly, the invention is not limited to above-mentioned embodiment, those of ordinary skill in the art also can make equivalent variations or replacement under the prerequisite without prejudice to spirit of the present invention, and these equivalent modification or replacement are all included in the application's claim limited range.
Claims (8)
1. alleviate the Low elevation greenbelt current limliting facility of urban catchments effectiveness factors for one kind, it is characterized in that: comprise the Low elevation greenbelt being located at road periphery, described Low elevation greenbelt edge is lower than pavement of road, and reduce elevation gradually to middle part to form the low spot region, middle part of collected rainwater, low spot region, described middle part is provided with the catch-basin connected with municipal drainage pipe network, the borehole wall bottom of described catch-basin is provided with the outlet pipe connected with municipal drainage pipe network, the entry position of the inherent outlet pipe of described catch-basin is provided with current limliting lock, described current limliting lock comprises base plate and some stoplogs, described base plate upper end is provided with overflow water inlet breach, and form slot post in the both sides of described overflow water inlet breach, the inner side of described slot post is provided with the slot guiding stoplog to slip into overflow water inlet breach.
2. the Low elevation greenbelt current limliting facility of alleviation urban catchments effectiveness factors according to claim 1, it is characterized in that: described catch-basin adopts puts down into formula catch-basin, described catch-basin forms the well edge higher than periphery Low elevation greenbelt mud face, and arranges grid-like cover plate in described well edge.
3. the Low elevation greenbelt current limliting facility of alleviation urban catchments effectiveness factors according to claim 1 and 2, is characterized in that: the borehole wall of described catch-basin adopts sand concrete free structure, and at arranged outside loaded filter.
4. the Low elevation greenbelt current limliting facility of alleviation urban catchments effectiveness factors according to claim 3, is characterized in that: described loaded filter comprises cobble layer and the granule layer of ecto-entad layering setting, and is wrapped in the geotextiles outside cobble layer and granule layer.
5. the Low elevation greenbelt current limliting facility of alleviation urban catchments effectiveness factors according to claim 1, it is characterized in that: described stoplog is the straight beam of rectangular in cross-section, described base plate forms the plane can fitted with stoplog in the bottom surface of overflow water inlet breach, described slot is the V-shaped groove along slot post indent, and the termination, two ends of described stoplog all forms the first orientation angle rib that can coordinate with V-shaped groove and locate.
6. the Low elevation greenbelt current limliting facility of alleviation urban catchments effectiveness factors according to claim 1, it is characterized in that: the shaft bottom of described catch-basin is provided with draw-in groove, the bottom of described base plate forms the described draw-in groove of embedding and support baseboard rotates around draw-in groove with the second orientation angle rib opening or cover outlet pipe, and the bottom of described base plate is also provided with some sluicing seams penetrating base plate.
7. the Low elevation greenbelt current limliting facility of alleviation urban catchments effectiveness factors according to claim 1 and 2, it is characterized in that: the pavement of road slope aspect Low elevation greenbelt of described Low elevation greenbelt periphery, the discrepancy in elevation of Low elevation greenbelt edge and pavement of road adopts the transition of face, flat gradient.
8. the Low elevation greenbelt current limliting facility of alleviation urban catchments effectiveness factors according to claim 1 and 2, is characterized in that: be provided with substrate below the shaft bottom of described catch-basin, the stone sand bed course that described substrate comprises plain concrete basis and is positioned on the downside of plain concrete basis.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410053008.4A CN103821217B (en) | 2014-02-17 | 2014-02-17 | Low-lying green space flow limiting facility for relieving small-watershed waterlogging disaster of city |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410053008.4A CN103821217B (en) | 2014-02-17 | 2014-02-17 | Low-lying green space flow limiting facility for relieving small-watershed waterlogging disaster of city |
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| CN103821217A CN103821217A (en) | 2014-05-28 |
| CN103821217B true CN103821217B (en) | 2015-05-13 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104790508A (en) * | 2015-04-13 | 2015-07-22 | 湖南城市学院 | Gutter inlet structure with function of draining water accumulated inside roadbed and road surface |
| CN105863029A (en) * | 2016-05-16 | 2016-08-17 | 北京雨人润科生态技术有限责任公司 | Multifunctional municipal pipeline discharge port suitable for different rainfall conditions |
| CN109339186A (en) * | 2018-08-28 | 2019-02-15 | 武汉圣禹排水系统有限公司 | Road rain water pneumatically shunts processing system and its control method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5595457A (en) * | 1995-03-14 | 1997-01-21 | Stucks; Mark A. | Storm drainage underflow dam unit |
| CN2887986Y (en) * | 2005-09-02 | 2007-04-11 | 北京泰宁科创科技有限公司 | Penetrating catch basin |
| CN202380558U (en) * | 2011-12-27 | 2012-08-15 | 北京建筑工程学院 | Anti-water-logging system |
| CN102720262A (en) * | 2012-06-30 | 2012-10-10 | 黄姁媛 | Novel urban drainage system |
| CN102966165B (en) * | 2012-11-12 | 2015-05-06 | 三峡大学 | System for eliminating and reducing urban inland inundation by utilizing adsorption layer of green area and inland inundation eliminating and reducing method |
| CN203174754U (en) * | 2013-03-22 | 2013-09-04 | 大连东都建材有限公司 | Rainwater permeable-type overflow well |
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Address after: 510060 Guangdong, Guangzhou City, East Central Road, Municipal Services Building, East staircase, No. 348 Patentee after: Guangzhou City Engineering Design studies total institute Address before: 510060 Guangdong, Guangzhou City, East Central Road, Municipal Services Building, East staircase, No. 348 Patentee before: Guangzhou Municipal Engineering Design and Research Institute |
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Address after: 510060 East seat, No. 348 East Ring Road, Guangzhou, Guangdong, Yuexiu District Patentee after: Guangzhou municipal engineering design and Research Institute Co., Ltd. Address before: 510060 East staircase, Municipal Services Building, 348 East Ring Road, Guangzhou, Guangdong Patentee before: Guangzhou City Engineering Design studies total institute |
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