CN113550272B - Coastal city drainage waterlogging prevention integrated gate station - Google Patents
Coastal city drainage waterlogging prevention integrated gate station Download PDFInfo
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- CN113550272B CN113550272B CN202110854864.XA CN202110854864A CN113550272B CN 113550272 B CN113550272 B CN 113550272B CN 202110854864 A CN202110854864 A CN 202110854864A CN 113550272 B CN113550272 B CN 113550272B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B7/00—Barrages or weirs; Layout, construction, methods of, or devices for, making same
- E02B7/20—Movable barrages; Lock or dry-dock gates
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F5/00—Draining the sub-base, i.e. subgrade or ground-work, e.g. embankment of roads or of the ballastway of railways or draining-off road surface or ballastway drainage by trenches, culverts, or conduits or other specially adapted means
- E01F5/005—Culverts ; Head-structures for culverts, or for drainage-conduit outlets in slopes
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B7/00—Barrages or weirs; Layout, construction, methods of, or devices for, making same
- E02B7/20—Movable barrages; Lock or dry-dock gates
- E02B7/205—Barrages controlled by the variations of the water level; automatically functioning barrages
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/22—Adaptations of pumping plants for lifting sewage
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H5/00—Buildings or groups of buildings for industrial or agricultural purposes
- E04H5/02—Buildings or groups of buildings for industrial purposes, e.g. for power-plants or factories
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/20—Controlling water pollution; Waste water treatment
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Abstract
The invention relates to the field of water conservancy and municipal engineering, and discloses a coastal urban drainage and waterlogging prevention integrated gate station, which comprises a municipal drainage pump station arranged on a bank on one side of a river channel sea outlet, wherein a forebay of the municipal drainage pump station is communicated with a rainwater box culvert and is provided with a sewage pump and a flow guide area, a drainage pump is arranged in the forebay and can pump water in the forebay to a water outlet pool communicated with the open sea, and the elevation of the flow guide area, the pump stop water level of the sewage pump and the pump starting water level of a single drainage pump are consistent; a river mouth sluice arranged between the other side embankment and the pump station; the front pool is provided with a normally closed pump front sluice, and the pump station and the river mouth sluice operate independently; when the river mouth sluice gate is closed due to the open sea top support but the river channel needs to be changed/drained, the sluice gate in front of the pump is opened, and the pump station is used for changing/draining water; when the pump station is shut down due to negative lift during operation, the sluice in front of the pump is opened, and water is drained through the sluice at the river mouth; when the rainfall pump station is shut down in case of exceeding standard, the sluice gate before the pump is opened, and the river is used for regulation and storage and is opened when the sea tide level is low. And the pump station and the water gate are mutually standby, so that the inland inundation risk of coastal cities is greatly reduced.
Description
Technical Field
The invention relates to the field of water conservancy and municipal engineering, in particular to a coastal urban drainage waterlogging prevention integrated gate station.
Background
In hydroelectric engineering, the drainage of waterlogging in river channels usually adopts the installation of gates or gate stations at river mouths. In the rainwater pump station of municipal works, the pump station is adopted to collect municipal rainwater converged in cities and then promote and discharge the rainwater. The initial rain of the municipal rainwater has certain pollution, partial mixed sewage possibly exists, the water quality cannot meet the requirement of the river water quality, and meanwhile, the calculation standards and methods of the two systems are different, so that the two systems are usually used independently.
In coastal cities, the existing estuary floodgates are greatly influenced by the sea tide level due to the geographical position of the existing estuary floodgates. Under the design condition, the sluice can satisfy the water change/drainage requirement of the river channel, but when the sluice cannot be opened due to the jacking of high sea tide level in open sea, the water change/drainage requirement of the river channel cannot be satisfied, and when standard rainstorm or extreme weather occurs, the sluice is difficult to deal with.
Municipal drainage pump stations located in coastal cities cannot directly discharge water into riverways due to requirements of riverway water ecological water quality and the like, and need to directly discharge the water to open sea, so that discharge ports of the municipal drainage pump stations are also easily influenced by the tide level of the open sea; in addition, when the rainfall exceeds the standard, the scale of a pump station cannot meet the drainage requirement, or the pump station needs to be shut down due to negative lift during operation, the rainwater cannot be discharged in time, so that the urban inland inundation is caused.
Disclosure of Invention
Aiming at the defects and shortcomings in the prior art, the invention provides a coastal city drainage waterlogging prevention integrated gate station, wherein a municipal drainage pump station and a estuary sluice can be mutually connected and stand by when necessary, so that water conservancy and municipal complementation is realized, the overall safety is improved, the problems that the municipal drainage pump station of the coastal city needs to directly drain to the open sea due to water ecology and water quality requirements, but can not effectively drain water when meeting super-standard rainfall are solved, and the problem that a riverway of the coastal city cannot effectively drain water at the high tide level of the open sea is also solved.
The above purpose of the invention is realized by the following technical scheme:
an integrated coastal city drainage and waterlogging prevention gate station comprises:
the municipal drainage pump station is arranged according to an embankment on one side of a river channel sea outlet and comprises a forebay and a water outlet pool, wherein the forebay is communicated with a rainwater box culvert, a sewage pump and a drainage pump are arranged in the forebay, a sewage pump guide area is defined by the communication position of a water outlet of the rainwater box culvert and the forebay through a guide wall, the height of the guide wall, the stop pump water level of the sewage pump and the starting pump water level of a single drainage pump are consistent, and initial rainwater or sewage which is not intercepted in dry seasons during rainfall is guided to the sewage pump through the sewage pump guide area and then is discharged to a municipal sewage pipe network; when rainfall increases, the water level of the forebay rises to the water level of a sewage pump stop pump, the sewage pump stops running, the drainage pump starts, rainwater in the forebay is pumped and drained to a water outlet pool, and the water outlet pool is communicated with open sea;
the river mouth sluice gate is arranged between a bank on the opposite side of the river channel sea outlet and the municipal drainage pump station;
the front pool is provided with a pump front sluice which is used for being connected with a river channel, the pump front sluice is normally closed, and the municipal drainage pump station and the river mouth sluice operate independently; when the river mouth sluice gate cannot be opened due to the high tide level jacking of the open sea, but the river channel needs to be changed with water or drained, the sluice gate in front of the pump is opened, the river channel is communicated with the forebay and the river channel can be changed with water or drained through a municipal drainage pump station; when the drainage pump runs and the negative lift cannot start the water pump to drain, the front pump sluice is opened, the front pool is communicated with the river channel, and rainwater is drained through the river mouth sluice; when the excessive rainfall occurs, the drainage requirement cannot be met by the drainage pump, the water level of the forebay still continues to rise and exceeds the highest operation water level, and the municipal drainage pump station needs to be shut down, the water gate in front of the pump is opened, the forebay is communicated with the river channel, the surge capacity of the river channel is utilized for regulation and storage, and the water gate is opened for drainage when the sea side tide level outside the water gate at the river mouth is low.
Preferably, the water outlet of the rainwater box culvert is communicated with the side wall of the front pool close to the upstream side of the river channel, and the drainage pump diversion area is arranged on the bank side in the front pool and at the water outlet of the rainwater box culvert; the pump front sluice is arranged on the side wall of the front pool close to the upstream side of the river channel.
Preferably, an accident gate is arranged at the downstream of the discharge port of the drainage pump, the accident gate is normally opened, and when the drainage pump runs and has a negative lift or is required to be shut down when exceeding-standard rainfall occurs, the accident gate is closed; the gate chamber of the estuary sluice is provided with an estuary working gate close to the inland river side and an estuary maintenance gate close to the open sea side, wherein the estuary maintenance gate is normally opened and is opened and closed as required.
Preferably, at least three partition walls are arranged in the forebay close to the open sea side to form at least two water inlet channels, one partition wall is connected with one embankment, and at least two drainage pumps are arranged and respectively arranged at the tail ends of the water inlet channels; correspondingly, the water outlet pool is provided with a plurality of dividing piers to form a plurality of water outlet channels, one dividing pier is connected with one bank, the dividing pier close to the estuary sluice is connected with one sluice pier of the estuary sluice, the discharge ports of the at least two drainage pumps are respectively positioned at the head ends of the corresponding water outlet channels, and the accident gate is arranged in each water outlet channel and positioned at the downstream of the discharge port of the drainage pump.
Preferably, the sewage pumps are two in number, have the same type and are arranged according to one use and one standby; the drainage pumps are four in number, have the same type and are arranged according to three purposes and one backup; the height of the guide wall is consistent with the pump stopping water level when the two sewage pumps run simultaneously and the pump starting water level of a single drainage pump.
Preferably, each water inlet channel is provided with a trash rack near the head end.
Preferably, a flap valve is arranged at the discharge port of each drainage pump; and/or the tail ends of the water outlet channels are communicated with a tail water channel, and the tail water channel is communicated with the open sea.
Preferably, the inland river side, the open sea side and the forebay of the river channel are respectively provided with a water level meter, each water level meter is electrically connected with a controller in a pump station control room, and the controllers are electrically connected with a display so as to monitor and display water level information of the inland river side, the open sea side and the forebay of the river channel in real time; and/or the controller is also electrically connected with an alarm device, and the alarm device respectively sends out alarm signals when the water levels of the inland river side, the open sea side and the forebay of the riverway exceed preset alarm values.
Preferably, the hoist of the pre-pump sluice, the hoist of each emergency gate and the hoist of the river mouth working gate are respectively and electrically connected with a controller, and the controller controls the opening and closing of the pre-pump sluice, each emergency gate and the river mouth working gate according to the monitored water level information and a preset program.
Preferably, the controller is electrically connected with each sewage pump and each drainage pump respectively, and controls the operation of each sewage pump and each drainage pump according to the monitored water level information and a preset program.
Compared with the prior art, the technical scheme of the invention has the beneficial effects that:
according to the invention, the municipal drainage pump station and the estuary sluice of the coastal city are built at the outlet of the river channel, the pump front sluice connected with the river channel is arranged in the pump station front pool, and the diversion facility and the sewage pump are arranged in the front pool, so that dry season sewage and initial rainwater are lifted to the municipal sewage pipe network for collection and treatment, the pollution to the river channel and the open sea is reduced, the ecological environment is protected, according to the monitored water level information of the river channel on the inner river side, the outer sea side and the front pool, the operation of the municipal drainage pump station and the estuary sluice is automatically controlled or manually controlled, so that two systems are mutually connected and reserved when necessary, the water conservancy and municipal complementation is realized, the overall safety is improved, the requirement of municipal drainage of the coastal city on the water ecological environment protection of the river channel and the outer sea is met, the problem that the municipal drainage pump station cannot effectively drain water when meeting over-standard rainfall and negative lift is caused is solved, and the problem that the coastal city cannot effectively drain water at high tide level is solved; the integral structure is compact, and the problem of shortage of land used at the position of the coastal city river channel sea outlet is favorably optimized.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
FIG. 1 is a schematic plan view of an integrated coastal city drainage and waterlogging prevention gate station according to an embodiment of the present invention;
FIG. 2 isbase:Sub>A cross-sectional view ofbase:Sub>A municipal drainage pumping station A-A in the integrated lock station shown in FIG. 1;
FIG. 3 is a sectional view of a estuary sluice B-B in the integrated sluice station of FIG. 1;
FIG. 4 is a partial sectional view of FIG. 1 taken along the direction C-C;
in the figure: the device comprises a forebay 1, a sewage pump 2, a drainage pump 3, a drainage pipe culvert 31, a discharge port 32, a water outlet pond 4, a river channel 5, a rainwater box culvert 6, open sea 7, a pump forebay water gate 8, an accident gate 9, a river mouth working gate 10, a river mouth overhaul gate 11, a trash rack 12, a floating box type flap valve 13, a tail canal 14 and a sewage pump diversion area 15.
Detailed Description
The drawings are for illustrative purposes only and are not to be construed as limiting the patent;
for the purpose of better illustrating the present embodiments, certain elements of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product;
it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted;
in the description of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "disposed" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, so to speak, as communicating between the two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. The terms "upper", "lower", "left", "right", "front", "rear", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
The technical solution of the present invention is further described below with reference to the accompanying drawings and examples.
As shown in fig. 1 to 4, the coastal urban drainage and waterlogging prevention integrated gate station provided by the embodiment of the invention comprises a municipal drainage pump station and a river mouth water gate which are built at the outlet of a river channel. The municipal drainage pump station is arranged along the embankment on one side of the river channel sea outlet and comprises a forebay 1 and a water outlet pool 4, the forebay is communicated with a rainwater box culvert 6, and a sewage pump 2 and a drainage pump 3 are arranged in the forebay. A drainage pump flow guide area 15 is defined by the communication position of the water outlet of the rainwater box culvert and the forebay through a flow guide wall, the height of the flow guide wall, the pump stop water level of the drainage pump and the pump starting water level of a single drainage pump are consistent, and initial rainwater or sewage which is not intercepted in dry seasons during rainfall is guided to the drainage pump through the drainage pump flow guide area and then is discharged to a municipal sewage pipe network; when rainfall increases, the water level of the forebay rises to the water level of the sewage pump, the sewage pump 2 stops running, the drainage pump 3 starts, rainwater in the forebay is pumped and discharged to the water outlet pool 4, and the water outlet pool is positioned on the inland river side of the river channel and communicated with the open sea 7, so that the rainwater discharged to the water outlet pool is finally discharged into the open sea. Considering the change of rainwater flow, the operation management of a pumping station is facilitated and electricity is savedIn this embodiment, four drain pumps 3 with the same model number and two drain pumps 2 with the same model number are arranged in common, the four drain pumps are arranged in a three-way manner and one standby manner, and the two drain pumps are arranged in a one-use manner and one standby manner, wherein the model of the drain pump (P7121/935, q = 4.9m) 3 /s, H =8.5m, p = 460kw), dredge pump model (Q =30L/s, H =14m, p =7.5kw, self-coupled mounting). In dry seasons, the flow of initial rainwater is small, and a sewage pump is started to pump and discharge the collected initial rainwater to a municipal sewage pipe network; during rainy season, rainwater flow is great, opens the rainwater that the drain pump will collect and takes out row to open the sea to satisfy the timely emission of a large amount of rainwater, avoid forming the waterlogging. Specifically, the method comprises the following steps: when the rainfall increases, the front pool water level rises to a pump stop water level when the two sewage pumps run simultaneously (simultaneously, the height of the diversion wall is also reached, and the pump starting water level of the diversion wall is also reached), the two sewage pumps run simultaneously and can not meet the drainage requirement, the sewage pumps stop the pumps, the first drainage pump starts, when the rainfall further increases, the water level continuously rises, the second drainage pump also starts until the third drainage pump starts at a correspondingly set water level, the three main drainage pumps start simultaneously and meet the design flow requirement, when the standard exceeding heavy rain occurs, the fourth drainage pump starts simultaneously, the drainage capacity is increased (19.6 m) 3 S) comparison with the original design (14.7 m) 3 /s) increased by about 33%.
The river mouth sluice is arranged along the opposite side bank at the river channel sea outlet and is positioned between the opposite side bank and the municipal drainage pump station. Specifically, the upstream connecting section and the lock chamber section of the estuary sluice are positioned on the inland river side of the river channel, and the downstream connecting section is positioned in the open sea. It should be noted that the foundation civil engineering structure and construction of the municipal drainage pump station and the foundation civil engineering structure and construction of the river mouth sluice are the prior art, and are not described herein. In the present invention, a pump front floodgate 8 for connection with a river 5 is provided at the front pond 1 to form an integrated floodgate station. Particularly, preferably, the front pump sluice 8 is arranged on the side wall of the front pool close to the upstream side of the river channel, so that when the front pump sluice is opened and water in the river channel enters the front pool, the water flows in a forward water inlet mode (namely, the water flow direction is consistent with the drainage direction of the drainage pump in the front pool during operation), and the adverse phenomena of generating vortex, backflow, siltation and the like and influencing the water taking of the drainage pump are avoided. Under normal conditions, the water gate 8 before the pump is normally closed, and the municipal drainage pump station and the river sluice operate independently; when the river mouth sluice gate cannot be opened due to the high-tide-level jacking of the open sea but the river channel needs to be changed or drained, the pump front sluice gate 8 is opened, the river channel 5 is communicated with the forebay 1, and river channel water change or drainage can be realized through a municipal drainage pump station; when the drainage pump runs and the negative lift cannot start the water pump to drain, the front pump sluice is opened, the front pool is communicated with the river channel, and rainwater is drained through the river mouth sluice; when meeting excessive rainfall or storm surge, the drain pump can't satisfy the drainage demand, the forebay water level still continues to rise and exceeds the highest operating water level and must close down municipal drainage pump station, the pump forebay sluice is opened, and forebay and river course intercommunication utilize the river course to gush to hold and regulate, and when utilizing the extra-sea side water level of river mouth sluice to be low, carry out the switching-off and rush-discharging, can effectively deal with the extreme weather in coastal area.
In a preferred embodiment, the side wall of the forebay 1 close to the upstream side of the river 5 is communicated with a rainwater box culvert 6 water outlet in the municipal rainwater system, and municipal rainwater flows into the forebay 1 through the rainwater box culvert in a forward water inlet mode (namely, the water flow direction is consistent with the drainage direction when the drainage pump operates in the forebay), so that the water flow is stable, the generation of vortexes, backflow and siltation are avoided, and a good condition is provided for the drainage pump 3 to take water. Dredge pump water conservancy diversion district 15 sets up in the front pool in the embankment side and the rainwater box culvert delivery port department, is located the drain pump upper reaches, and the dredge pump is installed in dredge pump water conservancy diversion district terminal and is close to the embankment and through pressure outlet pipe connection to municipal sewage pipe network. It can be understood that the rainwater box culvert 6 is provided with an overflow facility, which is the prior art and has a small degree of association with the innovation point of the present invention, and therefore, the detailed description thereof is omitted.
As shown in fig. 1-3, further, an accident gate 9 is arranged at the downstream of the discharge port of each drainage pump, each accident gate is normally opened, and each accident gate is closed when the municipal drainage pump station needs to be shut down due to the occurrence of negative lift or over-standard rainfall during the operation of the drainage pump. The sluice gate room of river mouth sluice gate is close to the inland river side and is equipped with river mouth work floodgate 10, is close to the open sea side and is equipped with river mouth maintenance floodgate 11, river mouth maintenance floodgate is normally opened, and river mouth work floodgate is closed when will taking place the sea water jacking, causes the waterlogging in order to avoid the sea water to flow backward, then opens and close according to actual need under all the other circumstances, for example, when needing to trade water/drainage to the river course, opens river mouth work floodgate, when needs to river course damming the retaining, then closes river mouth work floodgate.
Preferably, four water inlet channels are formed in the front pool 1 close to the open sea side by arranging five partition walls, one partition wall is connected with the embankment, four drainage pumps 3 are respectively arranged at the tail ends of the water inlet channels, the four drainage pumps are fixedly arranged vertical axial flow pumps, an electric double-beam bridge crane is adopted for installation, and the crane is located on a main plant structural beam right above the drainage pumps. It can be understood that different pump types, such as a horizontal axial flow pump, a submersible axial flow pump, a vertical axial flow pump, etc., can be selected for different items according to specific design flow and operating head ranges. Correspondingly, the water outlet pool 4 is provided with five dividing piers to form four water outlet channels, wherein one dividing pier is connected with the embankment, the dividing pier close to the estuary sluice is connected with a sluice pier of the estuary sluice, the water outlet of each drainage pump is communicated with a drainage pipe culvert 31 through a flange, the drainage pipe culvert is arranged in the foundation of civil engineering matched with a municipal drainage pump station in a penetrating way, the other end of the drainage pipe culvert penetrates out of the foundation and is communicated with the head end of the corresponding water outlet channel to form a drainage outlet 32 of the drainage pump, and the accident gate 9 is arranged at the lower stream of the drainage outlet of the drainage pump in each water outlet channel.
In this embodiment, a trash rack 12 is disposed near the head end of each water inlet channel to intercept and remove solid impurities in the water flow, so as to prevent the impurities from being sucked into the drainage pump and affecting the operation of the pump. In order to prevent seawater from flowing backward into the drain culvert 31, a floating box flap valve 13 is arranged at the discharge port 32 of each drain pump. The tail ends of the water outlet channels are communicated with the tail water channel 14, the tail water channel is arranged in the open sea 7 and communicated with the open sea, and the influence of water power caused by water pumping and draining of the water pump on the washing of the riverbed can be reduced by arranging the tail water channel 14.
Furthermore, the inland river side, the open sea side and the forebay of river channel are equipped with water level gauge (not shown) respectively, and the equal electricity of each water level gauge connects the PLC controller in the pump station control room, and this PLC controller electricity is connected with the display to real-time supervision and the water level information of showing river channel inland river side, open sea side and forebay, the staff of being convenient for looks over the operating mode of pump station and sluice at any time. The PLC controller is also electrically connected with an alarm device, and the alarm device respectively sends out alarm signals when the water levels of the river channel inland river side, the open sea side and the forebay exceed preset warning values, so that when abnormal conditions except design working conditions occur, a worker can timely make countermeasures, such as opening and closing of related gates, starting and stopping of related pumps and the like. In this embodiment, please refer to fig. 2, fig. 3, and fig. 4 for the designed operation water level, the highest/low operation water level, the designed tide level, etc. in the river, the seaside, and the forebay.
Of course, the integrated gate station of the invention can also adopt an automatic control mode to control the operation, the hoist of the water gate 8 before the pump, the hoist of each emergency gate 9, the hoist of the river mouth working gate 10, each drainage pump 3 and the drainage pump 2 are respectively and electrically connected with a PLC controller, and the PLC controller controls the opening and closing of the water gate 8 before the pump, each emergency gate 9 and the river mouth working gate 10 and the operation of each drainage pump 3 and the drainage pump 2 according to the monitoring water level information and a preset program. It is understood that, in the preset program of the present invention:
(1) In the normal operation period (when no rainfall occurs and water exchange is not needed), the river mouth working gate 10 and the water gate 8 before the pump are normally closed, the water level in the river channel keeps the landscape water level, and the water quality is maintained by the internal ecological treatment facility in the river channel.
(2) The seawater quality is better outside, and the water change is carried out according to the requirement of maintaining the operation of the riverway water quality (considered according to the frequency of once every 2 weeks). Firstly, opening the river mouth working gate 10 to pre-reduce the landscape water level during the ebb tide period, opening the river mouth working gate 10 to drain water during the high tide period, and restoring the water level in the river channel to the landscape water level, wherein the water gate 8 before the pump is kept closed in the process.
(3) When rainfall occurs, the operation of the estuary working gate 10 is divided into the following three cases: (1) when raining, the sea tide level is lower than the landscape water level, the water gate 8 before the pump is kept closed, the river mouth working gate 10 is opened, and the river water level is maintained to keep the landscape water level. (2) When raining, the sea tide level is higher than the landscape water level but lower than the water level in the river, the water gate 8 before the pump is kept closed, and the river mouth working gate 10 is opened for water drainage. (3) During rainfall, open sea tide level is higher than the view water level and is higher than the water level in the river course, river mouth work floodgate 10 keeps closing, gush interior water level and rise, rise to gush interior water level and be higher than the forebay water level (drain pump can normal operation this moment) when the water level, open water gate 8 before the pump, utilize municipal drainage pump station to carry out forced drainage and reduce the water level, when rainfall lasts and takes place, when exceeding standard flood tide, the worst condition is that open sea takes place 5 years and meets the tide level, gather the rain within range and take place exceeding standard torrential rainstorm, gush interior water level rises to be higher than the highest pump stop water level of pump station (four drain pumps are moved simultaneously), open river mouth work floodgate 10 drainage.
Design condition verification of 'mainly tide' and 'mainly flood' is carried out according to specific conditions on different engineering projects, and the verification is conventional calculation and rechecking and is not repeated.
(4) Under the daily condition, the river mouth work gate is normally closed, the landscape water level is kept in the river channel, when the water level of the river channel needs to be reduced, the river mouth work gate can be opened for draining water during the period of ebb tide by utilizing open sea, and the water gate before the pump is kept closed in the process. When the river channel needs to be changed during the period that the sea tide level outside the river channel is higher than the landscape water level in the river channel to form the jacking, the PLC controller controls the estuary work gate 10 to be kept closed, the water gate 8 in front of the pump to be opened, and the drainage pump to run, so that the water in the river channel 5 flows to the forebay 1 and is changed/drained through the municipal drainage pump station.
(5) In this example, the rainwater box culvert is connected to the box culvert bottom elevation (-3.5 m) of municipal drainage pump station department and is deeper than the river bottom elevation (deepest about-0.95 m) of this department, and the box culvert rainwater can not self-drain by gravity, therefore adopts municipal drainage pump station to arrange by force. The design rainwater flow of the pump station is 14.5m 3 And/s, correspondingly designing the water level before the pump to be minus 1.0m, the lowest operation water level of the drainage pump to be minus 4.0m and the highest operation water level of the drainage pump to be 2.53m. Four draining pumps are arranged, three draining pumps are arranged, and the flow of each draining pump isAnd (6) carrying out equipartition. It should be noted that the designed operation water level of the drainage pumps refers to the water level when three drainage pumps operate simultaneously, the lowest operation water level of the drainage pumps refers to the pump stop water level of a single drainage pump, and the highest operation water level of the drainage pumps refers to the pump stop water level when four drainage pumps operate simultaneously. The start and stop control of each drainage pump is as follows: starting a pump water level: the water level of the first drainage pump is-3.0 m; the water level of the second drainage pump is-2.0 m; the water level of the third drainage pump is-1.0 m; corresponding pump stop water level: the first drainage pump is-4.0 m; the second drainage pump is-3.0 m; the third drainage pump is-2.0 m; at the early stage of rainfall, the water level of the forebay rises, the water level firstly reaches the starting water level of the first drainage pump, if the rainfall is not large, the water level falls back, when the lowest operation water level is reached, the first drainage pump stops operating, or the rainfall continues to increase, the water level cannot be reduced by the first drainage pump, the water level continues to rise, the water level reaches the starting water level of the second drainage pump, the second drainage pump starts, at the moment, the first drainage pump and the second drainage pump simultaneously operate, when the water level falls back, the first drainage pump and the second drainage pump start, the second drainage pump stops pumping, if the first drainage pump and the second drainage pump simultaneously operate, the water level continues to rise, the designed operation water level is reached, the third drainage pump starts, at the moment, the first drainage pump, the second drainage pump and the third drainage pump simultaneously operate, when the water level falls back, the water level falls to the starting water level of the two drainage pumps, the third drainage pump stops pumping, if the first drainage pump, the second drainage pump and the third drainage pump simultaneously operate, the water level continues to rise, the river course water level is timely opened, the river course water level is kept rising, and the river course water level is kept higher.
(6) When the extreme case of one hundred year rainstorm occurs (the design working condition is twenty year rainstorm), the scheduling principle of the water gate before the pump is as follows: at this moment, the front pool water level rises rapidly, the front pool water level is higher than the open sea water level, the municipal drainage pump station cannot work due to the fact that the negative lift (the open sea water level is lower than the front pool water level), the front pump water level is higher than the water level in a river channel, the front pump sluice is opened, the front pool is communicated with the river channel, the river channel capacity is utilized for regulation, when the river channel water level is higher than the open sea water level, the river mouth working sluice is opened for drainage, the front pump sluice is closed when the negative lift of the pump station disappears, and the drainage pump is opened. The two systems complement each other, give full play to the characteristics of each system, and greatly reduce the risk of waterlogging in coastal areas.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and their concepts should be equivalent or changed within the technical scope of the present invention.
Claims (10)
1. The utility model provides a coastal city drainage prevention waterlogging integration floodgate station which characterized in that includes:
the municipal drainage pump station is arranged according to an embankment on one side of a river channel sea outlet and comprises a forebay and a water outlet pool, wherein the forebay is communicated with a rainwater box culvert, a sewage pump and a drainage pump are arranged in the forebay, a sewage pump guide area is defined by the communication position of a water outlet of the rainwater box culvert and the forebay through a guide wall, the height of the guide wall, the stop pump water level of the sewage pump and the starting pump water level of a single drainage pump are consistent, and initial rainwater or sewage which is not intercepted in dry seasons during rainfall is guided to the sewage pump through the sewage pump guide area and then is discharged to a municipal sewage pipe network; when rainfall increases, the water level of the forebay rises to the water level of the sewage pump, the sewage pump stops running, the drainage pump starts, rainwater in the forebay is pumped and drained to the water outlet pool, and the water outlet pool is communicated with open sea;
the river mouth sluice gate is arranged between a bank on the opposite side of the river channel sea outlet and a municipal drainage pump station;
the front pool is provided with a pump front sluice which is used for being connected with a river channel, the pump front sluice is normally closed, and the municipal drainage pump station and the river mouth sluice operate independently; when the river mouth sluice gate cannot be opened due to the high tide level jacking of the open sea, but the river channel needs to be changed or drained, the sluice gate in front of the pump is opened, the river channel is communicated with the forebay, and river channel water change or drainage can be realized through a municipal drainage pump station; when the drainage pump runs and the negative lift cannot start the water pump to drain, the front pump sluice is opened, the front pool is communicated with the river channel, and rainwater is drained through the river mouth sluice; when the excessive rainfall occurs, the drainage requirement cannot be met by the drainage pump, the water level of the forebay still continues to rise and exceeds the highest operation water level, and the municipal drainage pump station needs to be shut down, the water gate in front of the pump is opened, the forebay is communicated with the river channel, the surge capacity of the river channel is utilized for regulation and storage, and the water gate is opened for drainage when the sea side tide level outside the water gate at the river mouth is low.
2. The coastal urban drainage and waterlogging prevention integrated gate station according to claim 1, wherein a water outlet of the rainwater box culvert is communicated with a side wall of the front pool on a side close to an upstream side of a river channel, and the drainage pump diversion area is arranged on a bank side in the front pool and at a water outlet of the rainwater box culvert; and the front pump sluice is arranged on the side wall of the front pool close to the upstream side of the river channel.
3. The coastal city drainage and waterlogging prevention integrated gate station according to claim 1 or 2, characterized in that an accident gate is arranged at the downstream of the drainage outlet of the drainage pump, the accident gate is normally opened, and when the drainage pump runs with a negative lift or meets with excessive rainfall and needs to shut down a municipal drainage pump station, the accident gate is closed; the lock chamber of the estuary sluice is close to the inland river side and is provided with an estuary work lock, is close to the outer sea side and is provided with an estuary maintenance lock, the estuary maintenance lock is normally opened, and the estuary work lock is opened and closed as required.
4. The coastal urban drainage and flood prevention integrated gate station according to claim 3, wherein at least three partition walls are arranged in the forebay near the open sea side to form at least two water inlet channels, one partition wall is connected with the bank, and at least two drainage pumps are arranged and respectively arranged at the tail ends of the water inlet channels; correspondingly, the water outlet pool is provided with a plurality of partition piers to form a plurality of water outlet channels, one partition pier is connected with the bank, the partition pier close to the estuary sluice is connected with one sluice pier of the estuary sluice, the discharge ports of the at least two drainage pumps are respectively positioned at the head ends of the corresponding water outlet channels, and the accident gate is arranged in each water outlet channel at the downstream of the discharge port of the drainage pump.
5. The coastal urban drainage and waterlogging prevention integrated gate station according to claim 4, characterized in that the sewage pumps are two in total, have the same type, and are arranged in a one-to-one mode; the four drainage pumps are same in type and are arranged according to three purposes; the height of the guide wall is consistent with the pump stopping water level when the two sewage pumps run simultaneously and the pump starting water level of a single drainage pump.
6. The integrated coastal urban drainage and flood prevention gate station according to claim 4, wherein each water intake channel is provided with a trash rack near the head end thereof.
7. The coastal urban drainage waterlogging prevention integrated gate station according to claim 4, wherein a flap valve is arranged at the discharge port of each drainage pump; and/or the tail ends of the water outlet channels are communicated with a tail canal which is communicated with the open sea.
8. The coastal urban drainage and waterlogging prevention integrated gate station according to claim 4, characterized in that the inland river side, the open sea side and the forebay of the river channel are respectively provided with a water level meter, each water level meter is electrically connected with a controller in a pump station control room, and the controllers are electrically connected with a display so as to monitor and display water level information of the inland river side, the open sea side and the forebay of the river channel in real time; and/or the controller is also electrically connected with an alarm device, and the alarm device respectively sends out alarm signals when the water levels of the inland river side, the open sea side and the forebay of the riverway exceed preset alarm values.
9. The integrated coastal urban drainage and waterlogging prevention gate station according to claim 8, wherein the hoist of the pre-pump sluice, the hoist of each emergency gate and the hoist of the river mouth working gate are electrically connected to a controller respectively, and the controller controls the opening and closing of the pre-pump sluice, each emergency gate and the river mouth working gate according to monitored water level information and a preset program.
10. The coastal urban drainage and waterlogging prevention integrated gate station according to claim 9, wherein the controller is electrically connected with each sewage pump and each drainage pump respectively and controls the operation of each sewage pump and each drainage pump according to the monitored water level information and a preset program.
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| CN202110854864.XA CN113550272B (en) | 2021-07-28 | 2021-07-28 | Coastal city drainage waterlogging prevention integrated gate station |
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| CN202110854864.XA CN113550272B (en) | 2021-07-28 | 2021-07-28 | Coastal city drainage waterlogging prevention integrated gate station |
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| AU747971B2 (en) * | 1999-07-26 | 2002-05-30 | Ms Shona Grant Hay | Flood protection system |
| CN106499041A (en) * | 2016-10-28 | 2017-03-15 | 同济大学 | A kind of Water Collection Tank in Drainage Pumping Station efficiently cuts dirty system |
| CN212641711U (en) * | 2020-06-05 | 2021-03-02 | 江苏海峡环保科技发展有限公司 | Prevent flowing backward rainwater box culvert and cut dirty pump station |
| CN112502092A (en) * | 2020-08-20 | 2021-03-16 | 长江勘测规划设计研究有限责任公司 | Water gate and pump station double-layer integrated structure and operation method thereof |
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