CN204940483U - Drainage type rainwater inspection well - Google Patents
Drainage type rainwater inspection well Download PDFInfo
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- CN204940483U CN204940483U CN201520612363.0U CN201520612363U CN204940483U CN 204940483 U CN204940483 U CN 204940483U CN 201520612363 U CN201520612363 U CN 201520612363U CN 204940483 U CN204940483 U CN 204940483U
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Abstract
The utility model discloses drainage type rainwater inspection well, it relates to field, municipal drainage system.It comprises basis, well bore, cage and well lid, upstream water inlet pipe, downstream outlet pipe, tapping pipe, inlet for stom water tube connector, catchment; Described basis is at bottommost, the top on basis is well bore, the top of well bore is cage and well lid, well bore is arranged respectively upstream water inlet pipe, downstream outlet pipe and inlet for stom water tube connector, inlet for stom water tube connector is positioned at the top of well bore, the bottom of well bore is provided with a catchment, and tapping pipe is positioned at the bottom of catchment.The utility model beneficial effect is: it has in rainwater transportation process, again cuts down the effect of part amount of rainfall, and can significantly improve the ability that the rainfall that exceeds standard tackled by existing pipeline; The rainwater of earial drainage can penetrate into underground recharging groundwater in relatively large area; Can abandoned stream part Initial Runoff rainwater by the earial drainage of tapping pipe, thus reduce the pollution to receiving water body, be beneficial to the protection of Urban Water Environment.
Description
Technical field
The utility model relates to field, municipal drainage system, is specifically related to drainage type rainwater inspection well.
Background technology
Municipal administration drainage system against rain collects discharge runoff rainwater by facilities such as inlet for stom water, pipeline, pumping plants, implement principle rainwater neither being processed and also do not utilize, discharge fast for many years always nearby, carry out design and construction according to certain standard by the drainage structures in little catchment area.But the urban waterlogging that but takes place frequently in recent years, from 2011 ~ 2013 years, the whole nation met with waterlogging more than 360 cities, and the city such as Beijing, Jinan even there occurs the accident because waterlogging causes casualties.This illustrates the drainability of existing storm sewer, can not meet the demand of urban development.
For the rainfall of a certain field, the size of run-off depends on earth's surface kind, various roofing and concrete or flexible pavement run-off are 85% ~ 90% of amount of precipitation, non-pave that soil surface run-off is amount of precipitation 25% ~ 35%, park or greenery patches run-off are 10% ~ 20% of amount of precipitation.The area that hardens in Process of Urban Development increases, and it is inexorable trend that greenery patches and land area reduce, and this variation tendency will be further serious under extension increases the urbanization overall background of formula, and the waterlogging problem caused thus also will be further outstanding.
For make city development build before and after hydrological characteristics close, successfully manage urban waterlogging problem in design standard, the portion that firmly builds has issued " sponge urban construction technical manual " on November 2nd, 2014, advocate low affect development and Design municipal administration drainage system against rain.Facility, porous pavement etc. are low affects measure to adopt concave herbaceous field, ecologic rainwater to regulate, and all effectively can reduce flow path surface, reduce waterlogging odds in design standard.But rainfall has not specificity, when the rainfall that exceeds standard occurs, certainly exist the potential danger that waterlogging occurs.The urban waterlogging that the rainfall that exceeds standard causes is that China enters to promote quality for main urbanization Transformation Development stage problem demanding prompt solution.Affect on the drainage system against rain of development & construction low, if cut down part amount of rainfall again in the process of rainwater transportation, then can improve the ability that the rainfall that exceeds standard tackled by existing pipeline to a certain extent.But again cut down the measure of amount of rainfall and the raising degree of adaptibility to response thereof, there is not been reported.
Utility model content
The purpose of this utility model is defect for prior art and deficiency, the drainage type rainwater inspection well that a kind of structure is simple, reasonable in design, easy to use is provided, it has in rainwater transportation process, again cut down the effect of part amount of rainfall, and can significantly improve the ability that the rainfall that exceeds standard tackled by existing pipeline, and this adaptibility to response enlarges markedly with the increase of tapping pipe caliber; The rainwater of earial drainage can penetrate into underground recharging groundwater in relatively large area, effectively reduces because urban construction is on the impact of hydrological characteristics, realizes hydrological characteristics before and after development & construction close; Meanwhile, can abandoned stream part Initial Runoff rainwater by the earial drainage of tapping pipe, thus reduce the pollution to receiving water body, be beneficial to the protection of Urban Water Environment.
In order to solve the problem existing for background technology, the technical solution adopted in the utility model is: it comprises basis, well bore, cage and well lid, upstream water inlet pipe, downstream outlet pipe, tapping pipe, inlet for stom water tube connector, catchment, described basis is at bottommost, the top on basis is well bore, the top of well bore is cage and well lid, well bore arranges upstream water inlet pipe respectively, downstream outlet pipe and inlet for stom water tube connector, inlet for stom water tube connector is positioned at the top of well bore, the bottom of well bore is provided with a catchment, tapping pipe is positioned at the bottom of catchment, tapping pipe is perpendicular to upstream water inlet pipe and downstream outlet pipe, and tapping pipe caliber is less than inlet for stom water tube connector caliber, cage and well lid, upstream water inlet pipe, downstream outlet pipe, inlet for stom water tube connector, tapping pipe is approved product, tapping pipe adopts concrete pipe or plastic pipe, the perforate of tapping pipe tube wall, eyelet is staggered.
Drainage type rainwater inspection well is on the basis of the rainwater inspection well determined under design standard, and set up catchment and the tapping pipe of certain depth again in shaft bottom, chute is not established in shaft bottom, is circular or rectangular configuration.
After adopting said structure, the utility model beneficial effect is: it has in rainwater transportation process, again cut down the effect of part amount of rainfall, and the ability that the rainfall that exceeds standard tackled by existing pipeline can be significantly improved, and this adaptibility to response enlarges markedly with the increase of tapping pipe caliber; The rainwater of earial drainage can penetrate into underground recharging groundwater in relatively large area, effectively reduces because urban construction is on the impact of hydrological characteristics, realizes hydrological characteristics before and after development & construction close; Meanwhile, can abandoned stream part Initial Runoff rainwater by the earial drainage of tapping pipe, thus reduce the pollution to receiving water body, be beneficial to the protection of Urban Water Environment.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Description of reference numerals: basis 1, well bore 2, cage and well lid 3, upstream water inlet pipe 4, downstream outlet pipe 5, tapping pipe 6, inlet for stom water tube connector 7, catchment 8.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is further described.
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with the drawings and the specific embodiments, the utility model is further elaborated.Should be appreciated that detailed description of the invention described herein only in order to explain the utility model, and be not used in restriction the utility model.
As shown in Figure 1, this detailed description of the invention adopts following technical scheme: it comprises basis 1, well bore 2, cage and well lid 3, upstream water inlet pipe 4, downstream outlet pipe 5, tapping pipe 6, inlet for stom water tube connector 7, catchment 8, described basic 1 at bottommost, the top on basis 1 is well bore 2, the top of well bore 2 is cage and well lid 3, well bore 2 arranges upstream water inlet pipe 4 respectively, downstream outlet pipe 5 and inlet for stom water tube connector 7, inlet for stom water tube connector 7 is positioned at the top of well bore 2, the bottom of well bore 2 is provided with a catchment 8, tapping pipe 6 is positioned at the bottom of catchment 8, tapping pipe 6 is perpendicular to upstream water inlet pipe 4 and downstream outlet pipe 5, and tapping pipe 6 caliber is less than inlet for stom water tube connector 7 caliber, cage and well lid 3, upstream water inlet pipe 4, downstream outlet pipe 5, tapping pipe 6, inlet for stom water tube connector 7 is approved product, tapping pipe 6 adopts concrete pipe or plastic pipe, the perforate of tapping pipe 6 tube wall, eyelet is staggered.
Basis 1 is concrete, thickness 150mm, when there being underground water, should do the thick hardcore bed of 100mm for 1 time on basis; Well bore 2 grouts MU10 brick, wall thickness 240mm for cement bonded sand; For reducing cost and ensureing that shaft bottom is positioned at more than groundwater table, the height of catchment 8 is advisable with 0.3 ~ 0.4m, is no more than 0.5m at most; Tapping pipe 6 caliber is determined according to local rain fall, and can be 200mm, 300mm or 400mm, percent opening is 1% ~ 3%, block for preventing the eyelet of tapping pipe 6 tube wall, tapping pipe 6 surrounding answers filling thickness to be not less than the gravel of 200mm, the permeable geotextiles of layer of gravel outsourcing, geotextiles lap width 200mm; Tapping pipe 6 should be embedded in more than underground peak level, and thickness of earth covering is fixed with the manhole degree of depth, should not be less than 0.7m, should not be less than 0.6m under sidewalk, greenbelt under nonmotorized vehicle lane; The gradient of laying of tapping pipe 6 is 1%.
During rainfall, after rainwater in upstream water inlet pipe 4 and inlet for stom water tube connector 7 enters manhole, first tapping pipe 6 earial drainage is entered in catchment 8, after inflow exceedes the discharge capacity of tapping pipe 6, unnecessary water accumulates in catchment 8, the water surface rises to higher than after end absolute altitude in downstream outlet pipe 5, just enters downstream outlet pipe 5 and discharges; After amount of precipitation reduces, the water yield entering manhole reduces gradually, the displacement of downstream outlet pipe 5 is also in continuous reduction, after catchment 8 water level is lower than downstream outlet pipe 5 invert elevation (IE), downstream outlet pipe 5 no longer draining, but the water of catchment 8 still continues earial drainage by tapping pipe 6, until catchment 8 is emptying.
After tapping pipe 6 discharge portion amount of rainfall, certainly exist a part without hydrospace in pipeline, this can hold a part without hydrospace and to exceed standard amount of rainfall.When rainfall is no more than design standard, the actual flow of pipeline is less than design discharge, is also namely less than the design conveyance power of water of pipeline, can avoids the generation of waterlogging; When rainfall exceedes design standard, the runoff design flow of storm drain as increased is less than the discharge of tapping pipe 6, and now pipeline does not reach design discharge, can not produce waterlogging; Runoff design flow of storm drain as increased equals the discharge of tapping pipe 6, and now pipeline reaches design discharge, carries out water delivery, also can not produce waterlogging by design conveyance power of water; Runoff design flow of storm drain as increased is greater than the discharge of tapping pipe 6, then ponding on the ground, may produce waterlogging time serious.
When the rainfall that exceeds standard occurs, the earial drainage existence of tapping pipe 6 flows to pressure current again to the change procedure of gravity current by gravity, and the pressure of pressure current catchments highly with catchment 8 and changes, and when pressure goes out to flow, its flow is greater than gravity-elution.When gravity flows out stream, tapping pipe 6 exists and flows to flowing full again to the process of non-flowing full by non-full, is not flowing full flow at the very start.In conjunction with these actual conditions, comprehensively get the discharge flow determining tapping pipe 6 and carry out analytical calculation relatively rationally by 35L/S, 100L/S, 210L/S respectively according to the difference of caliber 200mm, 300mm, 400mm, and there is certain representativeness.Calculate by analysis, the increase rate of Designed recurrence period is respectively 30%, 111%, 379%.
During one-sided sluicing, can earial drainage under sidewalk and greenbelt, also can earial drainage under road dividing strip; When bilateral sluices, should simultaneously earial drainage under sidewalk, greenbelt and road dividing strip.Be used for recharging groundwater by the rainwater of earial drainage, realize the further infiltration of rainwater, to alleviate the impact of urban construction on hydrological characteristics.Because orifice flow during earial drainage is greater than tube wall orifice flow, for avoiding structure foundation and road foundation to occur differential settlement, the length of tapping pipe 6 is to arrive greenbelt or dividing strip center line is advisable.Meanwhile, the unsuitable perforate of the tube wall under nonmotorized vehicle lane.
Drainage type rainwater inspection well should be arranged in the location of underground peak level lower than shaft bottom, in case underground water is introduced in well by stopping leak water pipe 6.According to local waterlogging situation, each rainwater inspection well can be made drainage type rainwater inspection well, also can do a drainage type rainwater inspection well at interval of certain distance, its spacing should be determined by calculating according to the developed width of infiltrating area and sidewalk, greenbelt, isolation strip.
This detailed description of the invention has in rainwater transportation process, again cut down the effect of part amount of rainfall, and the ability that the rainfall that exceeds standard tackled by existing pipeline can be significantly improved, and this adaptibility to response enlarges markedly with the increase of tapping pipe caliber, the rainwater of earial drainage can penetrate into underground recharging groundwater in relatively large area, also effectively reduce because urban construction is on the impact of hydrological characteristics, realize hydrological characteristics before and after development & construction close, simultaneously, can abandoned stream part Initial Runoff rainwater by the earial drainage of tapping pipe, thus the pollution reduced receiving water body, be beneficial to the protection of Urban Water Environment.
The above, only in order to the technical solution of the utility model to be described and unrestricted, other amendment that those of ordinary skill in the art make the technical solution of the utility model or equivalently to replace, only otherwise depart from the spirit and scope of technical solutions of the utility model, all should be encompassed in the middle of right of the present utility model.
Claims (3)
1. drainage type rainwater inspection well, is characterized in that comprising basis (1), well bore (2), cage and well lid (3), upstream water inlet pipe (4), downstream outlet pipe (5), tapping pipe (6), inlet for stom water tube connector (7), catchment (8); Described basis (1) is at bottommost, the top on basis (1) is well bore (2), the top of well bore (2) is cage and well lid (3), well bore (2) is arranged respectively upstream water inlet pipe (4), downstream outlet pipe (5) and inlet for stom water tube connector (7), inlet for stom water tube connector (7) is positioned at the top of well bore (2), the bottom of well bore (2) is provided with a catchment (8), tapping pipe (6) is positioned at the bottom of catchment (8), tapping pipe (6) tube wall perforate, eyelet is staggered.
2. drainage type rainwater inspection well according to claim 1, it is characterized in that described tapping pipe (6) is perpendicular to upstream water inlet pipe (4) and downstream outlet pipe (5), and tapping pipe (6) caliber is less than inlet for stom water tube connector (7) caliber.
3. drainage type rainwater inspection well according to claim 1, it is characterized in that described cage and well lid (3), upstream water inlet pipe (4), downstream outlet pipe (5), tapping pipe (6), inlet for stom water tube connector (7) are approved product, tapping pipe (6) adopts concrete pipe or plastic pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520612363.0U CN204940483U (en) | 2015-08-14 | 2015-08-14 | Drainage type rainwater inspection well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520612363.0U CN204940483U (en) | 2015-08-14 | 2015-08-14 | Drainage type rainwater inspection well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204940483U true CN204940483U (en) | 2016-01-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520612363.0U Expired - Fee Related CN204940483U (en) | 2015-08-14 | 2015-08-14 | Drainage type rainwater inspection well |
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| Country | Link |
|---|---|
| CN (1) | CN204940483U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112176820A (en) * | 2020-10-30 | 2021-01-05 | 大连科技学院 | Auxiliary drainage device for two sides of highway |
-
2015
- 2015-08-14 CN CN201520612363.0U patent/CN204940483U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112176820A (en) * | 2020-10-30 | 2021-01-05 | 大连科技学院 | Auxiliary drainage device for two sides of highway |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160106 Termination date: 20160814 |
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| CF01 | Termination of patent right due to non-payment of annual fee |