CN202730707U - Initial-stage rainwater intercepting and shunting as well as later-stage rainwater separating system for flood drainage river channel - Google Patents

Initial-stage rainwater intercepting and shunting as well as later-stage rainwater separating system for flood drainage river channel Download PDF

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Publication number
CN202730707U
CN202730707U CN 201220422474 CN201220422474U CN202730707U CN 202730707 U CN202730707 U CN 202730707U CN 201220422474 CN201220422474 CN 201220422474 CN 201220422474 U CN201220422474 U CN 201220422474U CN 202730707 U CN202730707 U CN 202730707U
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China
Prior art keywords
rainwater
stage rainwater
overflow
diversion channel
initial
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Expired - Fee Related
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CN 201220422474
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Chinese (zh)
Inventor
李志�
宋乾武
王红雨
白璐
张玥
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李志�
宋乾武
王红雨
白璐
张玥
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Priority to CN 201220422474 priority Critical patent/CN202730707U/en
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Publication of CN202730707U publication Critical patent/CN202730707U/en
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Abstract

The utility model discloses an initial-stage rainwater intercepting and shunting as well as later-stage rainwater separating system. The initial-stage rainwater intercepting and shunting as well as later-stage rainwater separating system comprises a diversion channel, an overflow side weir, a flood overflow channel and an initial-stage rainwater regulating and accumulating tank; an upstream water inlet of the diversion channel is communicated with an upstream fluid of an original flood drainage river channel; a downstream water outlet of the diversion channel is communicated with a fluid of the initial-stage rainwater regulating and accumulating tank; the flood overflow channel, from the upstream water inlet of the diversion channel to the downstream water outlet of the diversion channel, is arranged at one side of the diversion channel; the overflow side weir is positioned between the flood overflow channel and the diversion channel, and the weir top standard height of the overflow side weir and the highest control liquid level of the initial rainwater regulating and accumulating tank are at the same level; and the downstream water outlet of the flood overflow channel is communicated with the downstream fluid of the original flood drainage river channel. The initial-stage rainwater intercepting and shunting as well as later-stage rainwater separating system provided by the utility model can separate rainwater polluted severely at the initial stage from clean rainwater at the later stage effectively, prevents rainwater at the initial stage from polluting a downstream ground surface water body, does not influence flood prevention, saves energy consumption, is simple to run and manage, and achieve unmanned management.

Description

Drain off floodwaters river course early-stage rainwater interception and shunting and later stage rainwater piece-rate system
Technical field
The utility model relates to the intercepting system of the river course early-stage rainwater that drains off floodwaters, belong to field of environment engineering technology, particularly a kind of to the river course early-stage rainwater runoff that drains off floodwaters is tackled and early-stage rainwater runoff that pollution load is larger separates with clean later stage rainwater drain off floodwaters river course early-stage rainwater interception and shunting and later stage rainwater piece-rate system.
Background technology
The sewage collecting in China overwhelming majority cities and towns and treatment system be imperfection also, atmosphere pollution and ground pollution are serious, and the fast development along with plant husbandry, poultry industry and culture fishery, caused China's city surface source pollution and Rural Plane Source Pollution serious, under the leaching and souring of rainfall runoff, pollution of area source enters the water bodys such as lake, river, reservoir with rainfall runoff by the canal that drains off floodwaters, river course, artificial water canal etc.At the rainfall initial stage, because the first flush effect of rainfall, the water quality of early-stage rainwater runoff is the poorest, has carried the pollutant of whole rainfall runoff more than 80%.In order to protect the downstream receiving water body, the canal that drains off floodwaters, river course, artificial water canal etc. be can be chosen in and interception, separate system built, early-stage rainwater is introduced bypass rainwater storage pond and processing, thus effective Control the Plan Pollution Sources.
The hold-up interception method of early-stage rainwater mainly contains various early-stage rainwater catch basins, comprise jump weir formula catchpit, side-flow weir formula catchpit, bar gate type catchpit etc., these catch basins are realized the rainwater shunting according to ducted uninterrupted, and can not optionally separate early-stage rainwater runoff and later stage rainfall runoff according to duration of raining, therefore bad to the rejection effect of early-stage rainwater, and the early-stage rainwater catch basin only limits to use in the urban drainage system, and the early-stage rainwater that is not suitable for the large flow such as river course is held back.
The mode of holding back of early-stage rainwater also rain is held back ditch and shunting well, rainwater is held back and is laid the high osmosis material in the ditch, collection rain pipe is laid in the bottom, when the rainwater process is held back ditch, can penetrate in the collection rain pipe, collection rain pipe is sent the rainwater that is trapped into the rainwater shunting well, early-stage rainwater enters the rainwater storage pond by the rainwater shunting well, after storage pond is full, the later stage rainwater will enter the downstream water body by automatic overflow from the rainwater shunting well, thereby realize the shunting of rainwater.The water level that rainwater is held back ditch and shunting well must be lower than the water level of rainfall runoff, ability effectively catching, shunting early-stage rainwater, caused the water level in follow-up rainwater storage pond must be lower, unless landform has great slope, otherwise the rainwater of collecting need to rise to the subsequent treatment facility with water pump, and energy consumption is high.In addition, because the suspension of early-stage rainwater is very high, rainwater is held back very risky that ditch is deposited.
In addition, can also build in the river course that drains off floodwaters the rainwater interception such as rubber dam, pivoted weir, boiling water weir facility, early-stage rainwater is introduced bypass clean-up system, when bypass clean-up system reaches peak level, the later stage rainwater enters downstream river course with overflow.Rubber dam need to fill draining or gas, need to fill draining (gas) facility and control system, and rubber dam bag is subject to the damage of sharp object easily, so the maintenance management of rubber dam is had relatively high expectations.When adopting pivoted weir, after water level reached design elevation, turnover panel meeting automatic overturning do not affect flood passage, but water inlet need to arrange the anti counter-flowing facilities such as flap valve.In addition, equipment maintenance and management is had relatively high expectations, otherwise the situation that turnover panel does not have overturning may occur.The maintenance management on boiling water weir requires low, but in order not affect flood passage, dam crest can not be too high, and overflow weir is as far as possible wide, can reduce height of dam and discharge per unit width like this, therefore when the river course is narrower, the boiling water weir is difficult to both satisfy the flood control requirement, satisfies again the function of early-stage rainwater interception, shunting.
The utility model content
For the deficiencies in the prior art, the purpose of this utility model is to provide a kind of rainwater that can precontamination is serious to separate with the later stage rainwater of comparatively cleaning, energy consumption can be saved again, and unwatched river course early-stage rainwater interception and shunting and the later stage rainwater piece-rate system of drainning off floodwaters can be realized.
The technical solution of the utility model is achieved in that drain off floodwaters river course early-stage rainwater interception and shunting and later stage rainwater piece-rate system, comprises diversion channel, overflow side weir, excessive big vast canal and Rainwater Storage Tank; The upstream water inlet of described diversion channel and the former river course upstream fluid conducting of drainning off floodwaters, the downstream delivery port of described diversion channel and Rainwater Storage Tank fluid communication; Described excessive big vast canal is arranged on described diversion channel one side from described diversion channel upstream water inlet to described diversion channel downstream delivery port, described overflow side weir is between described excessive big vast canal and described diversion channel, and the weir crest absolute altitude of described overflow side weir and the highest control liquid level of described Rainwater Storage Tank are in the same level face; The downstream delivery port of described excessive big vast canal and the former river course downstream fluid conducting of drainning off floodwaters.
The beneficial effects of the utility model are:
(1) will drain off floodwaters early-stage rainwater interception in the river course, be diverted to the bypass Rainwater Storage Tank, and make comparatively clean later stage rainfall runoff overflow to the former river course that drains off floodwaters, the rainwater that precontamination is serious separates with the later stage rainwater of comparatively cleaning effectively, prevent early-stage rainwater to the pollution of downstream surface water body, also do not affect simultaneously flood passage.
(2) overflow side weir has been raised the regulate and store water level of system of early-stage rainwater, created preferably hydraulics, the rainwater gravity flow that is conducive in the Rainwater Storage Tank enters next handling process, reduces Rainwater Storage Tank to the waterpower elevation of next handling process, saves energy consumption.
(3) wide can design wider in the weir of overflow side weir, thus height of dam and discharge per unit width reduced, do not affect flood control.
(4) operational management is simple, can realize unattended.
Description of drawings
Fig. 1 is the drain off floodwaters plan view of river course early-stage rainwater interception and shunting and later stage rainwater piece-rate system of the utility model.
Fig. 2 is the drain off floodwaters A-A sectional drawing of river course early-stage rainwater interception and shunting and later stage rainwater piece-rate system of the utility model shown in Figure 1.
The former upstream, river course of drainning off floodwaters of 1-, 2-diversion channel, 3-storage pond entrance, 4-overflow side weir, 5-overflow canal, the former downstream, river course of drainning off floodwaters of 6-.
The specific embodiment
Present embodiment drains off floodwaters, and river course early-stage rainwater interception and shunting and later stage rainwater piece-rate system comprise diversion channel 2, overflow side weir 4, overflow big vast canal 5 and Rainwater Storage Tank 3; The upstream water inlet of described diversion channel 2 and former upstream, river course 1 fluid communication of drainning off floodwaters, the downstream delivery port of described diversion channel 2 and Rainwater Storage Tank 3 fluid communication; Described excessive big vast canal 5 is arranged on described diversion channel 2 one sides from described diversion channel 2 upstream water inlets to described diversion channel 2 downstream delivery ports, described overflow side weir 4 is between described excessive big vast canal 5 and described diversion channel 2, and the weir crest absolute altitude of described overflow side weir 4 and the highest control liquid level of described Rainwater Storage Tank 3 are in the same level face; The downstream delivery port of described excessive big vast canal 5 and former downstream, river course 6 fluid communication of drainning off floodwaters.
During rainfall, early-stage rainwater runoff in the former upstream, river course 1 of drainning off floodwaters is introduced Rainwater Storage Tank 3 by described diversion channel 2, because the absolute altitude of described overflow side weir 4 is consistent with the peak level of described Rainwater Storage Tank 3, after described Rainwater Storage Tank 3 is held completely, comparatively clean later stage rainwater enters described overflow canal 5 by described overflow side weir 4 overflows, then be introduced into the former downstream, river course 6 of drainning off floodwaters, thereby realize early-stage rainwater interception and shunting, and the separating of early-stage rainwater and later stage rainwater.
For so that early-stage rainwater all flows into described Rainwater Storage Tank 3, in practice of construction, described diversion channel 2 has certain hydraulic slope from upstream water inlet to downstream delivery port.
In addition, by flood control standard, when flood peak discharge passed through, the height of weir of described overflow side weir 4 added the liquid level elevation of weir headwater depth, is lower than the pool wall absolute altitude of described Rainwater Storage Tank 3; So that after being full of described Rainwater Storage Tank 3, can all flow into the described former downstream, river course 6 of drainning off floodwaters from the current of the former upstream, river course 1 of drainning off floodwaters along described excessive big vast canal 5, can not overflow from described Rainwater Storage Tank 3 like this.
Above-described embodiment only is for the invention example clearly is described, and is not the restriction to the invention specific embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here need not also can't give all embodiments exhaustive.And the apparent variation of being amplified out thus or change still are among the protection domain of the invention claim.

Claims (1)

1. drain off floodwaters river course early-stage rainwater interception and shunting and later stage rainwater piece-rate system is characterized in that, comprise diversion channel (2), overflow side weir (4), overflow big vast canal (5) and Rainwater Storage Tank (3); The upstream water inlet of described diversion channel (2) and former upstream, river course (1) fluid communication of drainning off floodwaters, the downstream delivery port of described diversion channel (2) and Rainwater Storage Tank (3) fluid communication; Described excessive big vast canal (5) is arranged on described diversion channel (2) one sides from described diversion channel (2) upstream water inlet to described diversion channel (2) downstream delivery port, described overflow side weir (4) is positioned between described excessive big vast canal (5) and the described diversion channel (2), and the highest control liquid level of the weir crest absolute altitude of described overflow side weir (4) and described Rainwater Storage Tank (3) is in the same level face; The downstream delivery port of described excessive big vast canal (5) and former downstream, river course (6) fluid communication of drainning off floodwaters.
CN 201220422474 2012-08-24 2012-08-24 Initial-stage rainwater intercepting and shunting as well as later-stage rainwater separating system for flood drainage river channel Expired - Fee Related CN202730707U (en)

Priority Applications (1)

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CN 201220422474 CN202730707U (en) 2012-08-24 2012-08-24 Initial-stage rainwater intercepting and shunting as well as later-stage rainwater separating system for flood drainage river channel

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Application Number Priority Date Filing Date Title
CN 201220422474 CN202730707U (en) 2012-08-24 2012-08-24 Initial-stage rainwater intercepting and shunting as well as later-stage rainwater separating system for flood drainage river channel

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CN202730707U true CN202730707U (en) 2013-02-13

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103243692A (en) * 2013-05-16 2013-08-14 黄河勘测规划设计有限公司 Construction arrangement method combining flow guidance and flood discharge
CN105672189A (en) * 2016-02-29 2016-06-15 叶兴 Disaster prevention and reduction method for preventing overproof flood dyke water damage
CN112482533A (en) * 2020-11-19 2021-03-12 北京市水利规划设计研究院 Method for setting river channel rainwater drainage port and river channel rainwater drainage system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103243692A (en) * 2013-05-16 2013-08-14 黄河勘测规划设计有限公司 Construction arrangement method combining flow guidance and flood discharge
CN103243692B (en) * 2013-05-16 2015-10-28 黄河勘测规划设计有限公司 The Construction Arrangement method that water conservancy diversion combines with flood discharge
CN105672189A (en) * 2016-02-29 2016-06-15 叶兴 Disaster prevention and reduction method for preventing overproof flood dyke water damage
CN112482533A (en) * 2020-11-19 2021-03-12 北京市水利规划设计研究院 Method for setting river channel rainwater drainage port and river channel rainwater drainage system

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C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20130213

Termination date: 20150824

EXPY Termination of patent right or utility model