CN109000731B - The experimental rig and method that research inlet for stom water chocking-up degree influences water discharged amount - Google Patents
The experimental rig and method that research inlet for stom water chocking-up degree influences water discharged amount Download PDFInfo
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- CN109000731B CN109000731B CN201810890023.2A CN201810890023A CN109000731B CN 109000731 B CN109000731 B CN 109000731B CN 201810890023 A CN201810890023 A CN 201810890023A CN 109000731 B CN109000731 B CN 109000731B
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- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
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- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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Abstract
The present invention provides a kind of experimental rig that research inlet for stom water chocking-up degree influences water discharged amount and method.Experimental rig is characterized in that, comprising: water storage portion；Surface runoff modeling portion, simcity road runoff process, and side vent is connected with water storage portion；The water of certain flow is supplied surface runoff modeling portion by water unit；Rainwater aerial drainage simulation part, the aerial drainage situation of simcity roads rain inlet include: the rain double-edged fine-toothed comb being mounted on surface runoff modeling portion outlet at bottom, the catch-basin and side branch being connected with outlet at bottom；The depth of water and flow velocity measurement portion, for measuring the depth of water and flow velocity near rain double-edged fine-toothed comb at fixed level；Letdown flow measurement portion is located at below rainwater aerial drainage simulation part, accepts the water flow let out under side branch, include: approach channel is mounted on the triangle weir plate of approach channel end, and entrance is connected with triangle weir plate, exports the waste canal being connected with water storage portion；And choking portion, it include rain double-edged fine-toothed comb blocking member and side branch blocking member.
Description
Technical field
The present invention relates to municipal drainage fields, and in particular to a kind of examination that research inlet for stom water chocking-up degree influences water discharged amount
Experiment device and method.
Background technique
China experienced rapid urban development in recent years, and roadnet constantly improve, and wherein drainage pipeline project is built
If level and quality also step up, but whenever heavy rain season, urban waterlogging phenomenon is still commonplace.According to statistics, 2006
Since China have every year and exceed hundred cities and flooded, the loss of year flood is huge.If national city flooded in 2010 is up to 258, phase
The big flood direct economic loss answered is up to 374,500,000,000 yuan.
Data show that when practical rainfall intensity is much smaller than design storm intensity corresponding to storm sewer Designed recurrence period
When, still there is the case where ponding waterlogging in many downtown roads.And it is the major reason for causing surface gathered water that inlet for stom water, which blocks unsmooth,
One of.Urban road inlet for stom water is the key facility that drainage system collects rainwater on road surface, is that rainwash rainwater enters underground row
The key node of waterpipe.Inlet for stom water once blocks the discharge capacity that will directly weaken entire sewer system, and then influences
The exclusion effect of rainwater, and traffic safety is influenced indirectly.But aerial drainage after the blocking for urban road inlet for stom water domestic at present
The research for measuring variation is less.Therefore carry out the experimental study of influence of the inlet for stom water chocking-up degree to its water discharged amount with particularly significant
Realistic meaning, while also can for building fining urban flooding process value model scientific basis be provided.
Summary of the invention
It is an object of that present invention to provide a kind of experimental rig that research inlet for stom water chocking-up degree influences water discharged amount and method,
To study inlet for stom water under different chocking-up degrees, the relationship of letdown flow and the comb preceding depth of water and flow velocity.
The present invention to achieve the goals above, uses following scheme:
<device>
The present invention provides a kind of experimental rig that research inlet for stom water chocking-up degree influences water discharged amount, which is characterized in that tool
Have: water storage portion；Surface runoff modeling portion, simcity road runoff process, and side vent is connected with water storage portion
It is logical；Water unit is connected with water storage portion and surface runoff modeling portion, and the water of certain flow is supplied surface runoff modeling portion；Rainwater
Aerial drainage simulation part, the aerial drainage situation of simcity roads rain inlet include: being mounted on the outlet at bottom in surface runoff modeling portion
Rain double-edged fine-toothed comb, the catch-basin being connected below the outlet at bottom and with outlet at bottom, and being mounted on collateral by catch-basin side
Pipe；The depth of water and flow velocity measurement portion are arranged in surface runoff modeling portion, for measuring the depth of water near rain double-edged fine-toothed comb at fixed level
And flow velocity；Letdown flow measurement portion is located at below rainwater aerial drainage simulation part, accepts the water flow let out under side branch, includes: smooth
And the approach channel for the stream that sluices under side branch is guided, it is mounted on approach channel end, the triangle weir plate for measuring letdown flow, entrance and three
The waste canal that angle weir plate is connected, water level is lower than triangle weir plate right-angled apices and outlet is connected with water storage portion；And blocking
Portion includes: for blocking the rain double-edged fine-toothed comb blocking member of the rain double-edged fine-toothed comb of certain area, and the side branch for blocking certain area
Side branch blocking member.
In the experimental rig that research inlet for stom water chocking-up degree according to the present invention influences water discharged amount, can also have
Such feature: surface runoff modeling portion includes: sink, be connected at the discharge outlet of sink side, with water storage portion and
For adjusting the tail-gate of the depth of water.
In the experimental rig that research inlet for stom water chocking-up degree according to the present invention influences water discharged amount, can also have
Such feature: rain double-edged fine-toothed comb blocking member includes: being covered on rain double-edged fine-toothed comb, blocked the plastic plate of water grid, and by plastics
Plate is removably mounted on the fixing piece on rain double-edged fine-toothed comb.
In the experimental rig that research inlet for stom water chocking-up degree according to the present invention influences water discharged amount, can also have
Such feature: side branch blocking member includes: being mounted on the ring flange in side branch exit, covers the ring flange of certain area
Transparent baffle, and installation part transparent baffle being removably mounted on ring flange.
In the experimental rig that research inlet for stom water chocking-up degree according to the present invention influences water discharged amount, can also have
Such feature: water unit includes: the connecting tube that water storage portion is connected with surface runoff modeling portion, and is arranged in connecting tube
Upper, regulating flow quantity water pump.
<method>
The present invention also provides a kind of test methods that research inlet for stom water chocking-up degree influences water discharged amount, using above-mentioned < dress
Set > described in experimental rig tested, which comprises the steps of: step 1. is using water unit by water storage portion
Middle water is according to predetermined amount of flow sustainable supply surface runoff modeling portion；Step 2. is adopted after the waterflow stabilization in surface runoff modeling portion
The depth of water and flow velocity near rain double-edged fine-toothed comb at fixed level are measured and recorded with the depth of water and flow velocity measurement portion, and records triangle weir plate
Preceding water level；The depth of water that step 3. gradually changes surface runoff modeling portion repeats step 2 every time after waterflow stabilization；Step
Rapid 4. gradually adjust the flow of inlet water in surface runoff modeling portion using water unit, then repeat step 2 and 3 every time.
The action and effect of invention
Because water storage portion is connected with surface runoff modeling portion, and is surface runoff modeling portion quantitative water supply by water unit,
The fixed rainy double-edged fine-toothed comb of the slot bottom in surface runoff modeling portion and the catch-basin and side branch for being undertaken on lower section, are used for simcity road
The aerial drainage situation of inlet for stom water；It is letdown flow measuring device below inlet for stom water aerial drainage, for measuring the letdown flow of inlet for stom water；Ground
Table Runoff Simulation portion and letdown flow measuring device are connected to water storage portion, by surface runoff modeling portion draining and rainwater
Underground sluices and streams back in water storage portion；Pass through the depth of water in tail-gate adjusting draining open area adjustably table Runoff Simulation portion.Cause
This can effectively simulate rain double-edged fine-toothed comb and catch-basin side branch difference blocking feelings using experimental rig provided by the present invention and method
The aerial drainage situation of urban road inlet for stom water under condition, while the flow shape in catch-basin is observed, and can propose according to test data
Under inlet for stom water difference chocking-up degree, the depth of water and the relationship of flow velocity at letdown flow and preceding fixed level of combing.
Detailed description of the invention
Fig. 1 is the knot for the experimental rig that research inlet for stom water chocking-up degree influences water discharged amount involved in the embodiment of the present invention
Structure schematic diagram；
Fig. 2 is the structural schematic diagram of rainwater aerial drainage simulation part involved in the embodiment of the present invention and rain double-edged fine-toothed comb blocking member
(its moderate rain double-edged fine-toothed comb is by rain double-edged fine-toothed comb blocking member blocking 1/3)；
Fig. 3 is that the structural schematic diagram of side branch involved in the embodiment of the present invention and side branch blocking member is (wherein collateral
1/4) pipe is blocked by side branch blocking member；
Fig. 4 is the structural schematic diagram of letdown flow measurement portion involved in the embodiment of the present invention.
Specific embodiment
The experimental rig that research inlet for stom water chocking-up degree according to the present invention influences water discharged amount referring to the drawings
And method is elaborated.
As illustrated in fig. 1 and 2, the experimental rig 10 that research inlet for stom water chocking-up degree influences water discharged amount with water storage portion 11,
Surface runoff modeling portion 12, water unit 13, rainwater aerial drainage simulation part 14, the depth of water and flow velocity measurement portion 15, letdown flow measurement portion
16 and choking portion 17.
In the present embodiment, water storage portion 11 is the reservoir that underground is arranged in, in the lowest level of experimental rig 10, Fig. 1
The rightmost side has been drawn in only for signal.
Surface runoff modeling portion 12 is used for simcity road runoff process, and side vent and water storage portion 11
It is connected.In the present embodiment, surface runoff modeling portion 12 is arranged above 11 water storage portion of water storage portion, and the water flowed out from discharge outlet can
It flows directly into the water storage portion 11 of lower section.Surface runoff modeling portion 12 includes sink 121 and tail-gate 122.Sink 121 is cuboid
Shape, bottom is transparent toughened glass layer, and bottom central zones are equipped with outlet, and side is equipped with discharge outlet.Tail-gate 122 is located at water
At 121 discharge outlet of slot, it is connected with water storage portion 11, for adjusting the depth of water in sink 121.Specifically, tail-gate 122 is by two layers of phase
Mutually transportable screen forms, and there are glade plane space between two layers of screen, passes through the stream for adjusting the adjustable draining in screen gap
Amount, and then adjust the depth of water in sink 121.
Water unit 13 is connected with water storage portion 11 and surface runoff modeling portion 12, and the water in water storage portion 11 is supplied with certain flow
To surface runoff modeling portion 12.Water unit 13 includes connecting tube 131 and water pump 132.Connecting tube 131 is by water storage portion 11 and earth's surface diameter
Flow field simulation portion 12 is connected.Water pump 132 is arranged in connecting tube 131, and regulating flow quantity.
As shown in Figures 1 to 3, rainwater aerial drainage simulation part 14 is used for the aerial drainage situation of simcity roads rain inlet, it includes
Rain double-edged fine-toothed comb 141, catch-basin 142 and side branch 143.The chimeric bottom for being mounted on surface runoff modeling portion 12 of rain double-edged fine-toothed comb 141 goes out
On mouth.Catch-basin 142 is located at below outlet at bottom, and is connected with outlet at bottom.Side branch 143 is mounted on catch-basin 142
By side.
The depth of water and flow velocity measurement portion 15 are arranged in surface runoff modeling portion 12, nearby stablize for measuring rain double-edged fine-toothed comb 141
The depth of water and flow velocity at water level.
As shown in figs. 1 and 4, letdown flow measurement portion 16 is located at 14 lower section of rainwater aerial drainage simulation part, accepts from side branch 143
Under the water flow let out.Letdown flow measurement portion 16 includes approach channel 161, triangle weir plate 162 and waste canal 163.Approach channel 161 is for smooth
With the lower sluicing stream of guidance side branch 143.Triangle weir plate 162 is mounted on the end of approach channel 161, lets out under inlet for stom water for measuring
Flow.The water inlet of waste canal 163 is connected with triangle weir plate 162, and water level is lower than the right-angled apices of triangle weir plate 162,
The water outlet of waste canal 163 is connected with water storage portion 11, will drain and send water storage portion 11 back to.In the present embodiment, 161 He of approach channel
Waste canal 163 is all to build the cuboid trough to get up with brick to enable to triangle weir plate 162 by the smooth water flow of approach channel 161
The preceding water surface is steady, and convenient for reading, the aerial drainage of triangle weir plate 162 passes through waste canal 163 again and is sent back in water storage portion 11.
Choking portion 17 includes rain double-edged fine-toothed comb blocking member 171 and side branch blocking member 172.
Rain double-edged fine-toothed comb blocking member 171 is used to block the rain double-edged fine-toothed comb 141 of certain area, as shown in Fig. 2, it include plastic plate and
Fixing piece.Plastic plate is covered on rain double-edged fine-toothed comb 141, is blocked a part and is crossed water grid.Fixing piece removably pacifies plastic plate
On rain double-edged fine-toothed comb 141, in the present embodiment, as shown in Fig. 2, the polypropylene plastics flitch using 0.5mm seals the 1/ of rain double-edged fine-toothed comb 141
3 cross water grids, and are pasted fixation with adhesive tape, with manufacture rain double-edged fine-toothed comb 141 it is blocked 1/3 the case where；By replacing not
The water grid excessively that rain double-edged fine-toothed comb 141 is blocked with the polypropylene plastics flitch of size, can simulate the feelings of the different chocking-up degrees of rain double-edged fine-toothed comb 141
Condition.
Side branch blocking member 172 is used to block the side branch 143 of certain area, and as shown in Figures 2 and 3, it includes flange
Disk 172a, transparent baffle 172b and installation part 172c.Ring flange 172a is mounted on 143 exit of side branch.Transparent baffle 172b
For covering the ring flange 172a of certain area.Transparent baffle 172b is removably mounted on ring flange 172a by installation part 172c
On.In the present embodiment, installation part 172c is six bolts, is uniformly provided with six eyelets on ring flange 172a.As shown in figure 3, examination
In testing, transparent baffle 172b is blocked to the ring flange 172a for covering 1/4 area, then by bolt by transparent baffle 172b with
Ring flange 172a is fixedly linked, thus will installation simulation side branch 143 be blocked 1/4 the case where；It is different size of by connecting
The case where transparent baffle 172b adjusts the area that is blocked of ring flange 172a, and can simulate 143 difference chocking-up degree of side branch.
Based on the above structure, for specific test, such as the maximum stream flow about 70L/s in surface runoff modeling portion 12 is given,
Maximum water depth about 25cm, rain double-edged fine-toothed comb 141 is having a size of 300*500mm, and catch-basin 142 is having a size of 300*500*500mm, side branch
143 diameters are 15cm, and the letdown flow of corresponding inlet for stom water can reach 35L/s.In view of the measurement accuracy of triangular-notch weir is relatively high,
It is generally used for the flow measurement that flow is less than 70L/s, so weir plate 162 is 80cm long, high 45cm, right angle using right angle trigonometry weir
The distance on edge is 30cm on vertex to weir plate 162, and the right and left of weir plate 162 and lower edge are all embedded in 161 brick wall of approach channel when installation
In 5cm, so the width of approach channel 161 is exactly 80-5-5=70cm, the maximum measuring flow that triangular-notch weir is calculated is 70L/s,
Meet the flow measurement requirement of test.In order to make the water flow stationary before triangular-notch weir, 162 lower edge of triangle weir plate is apart from 161 bottom of approach channel
Portion can have a certain distance, and the height set in the present embodiment is 15cm, i.e., 161 total height of approach channel is 15+45=60cm, together
When according to the installation requirement of triangle weir plate 162, the length of approach channel 161 need to be greater than 10 times of its width, so that 162 water surface before weir plate
Stablize, convenient for measurement water level, sets 8m for 161 length of approach channel in the present embodiment.The effect of waste canal 163 is by triangle weir plate
162 water outlet is guided in water-storing device, according to the installation requirement of triangular-notch weir, meets its water level lower than 162 right angle top of triangle weir plate
, 163 width of waste canal is set as 70cm, a height of 40cm in the present embodiment.
Further, experimental rig 10 using the above structure includes the following steps: come the concrete operation method tested
Step 1. is using water unit 13 by water in water storage portion 11 according to predetermined amount of flow sustainable supply surface runoff modeling portion 12；
Step 2. is measured and recorded after the waterflow stabilization in surface runoff modeling portion 12 using the depth of water and flow velocity measurement portion 15
The depth of water and flow velocity near rain double-edged fine-toothed comb 141 at fixed level, and record the water level before triangle weir plate 162；
The depth of water that step 3. gradually changes surface runoff modeling portion 12 repeats step 2 every time after waterflow stabilization；
Step 4. gradually adjusts the flow of inlet water in surface runoff modeling portion 12 using water unit 13, then repeats every time
Execute step 2 and 3.
Rain double-edged fine-toothed comb can be effectively simulated by the above test method and side branch difference stopping state descends urban road rainwater
The aerial drainage situation of mouth, while facilitating the flow shape in observation catch-basin, and can propose that inlet for stom water difference is blocked up according to experimental data
Under plug degree, the depth of water and the relationship of flow velocity at letdown flow and preceding fixed level of combing, so that researcher be enable conveniently to have
Effect ground research inlet for stom water chocking-up degree influences water discharged amount, and the urban flooding process value model for building fining provides section
Learn foundation.
Above is only the illustration done to technical solution of the present invention.Research inlet for stom water blocking according to the present invention
The experimental rig and method that degree influences water discharged amount are not merely defined in described structure in the embodiment above, but
It is defined by the scope defined by the claims..Any modification that those skilled in the art of the invention are made on the basis of this or
Supplement or equivalence replacement, all in claim range claimed of the invention.
Claims (6)
1. a kind of experimental rig that research inlet for stom water chocking-up degree influences water discharged amount, has water storage portion, water unit, rainwater aerial drainage
Simulation part and letdown flow measurement portion, which is characterized in that also include
Surface runoff modeling portion, the depth of water and flow velocity measurement portion and choking portion,
Wherein, the surface runoff modeling portion be used for simcity road runoff process, and side vent with it is described
Water storage portion is connected；
The water unit is connected with the water storage portion and the surface runoff modeling portion, and the water of certain flow is supplied the earth's surface
Runoff Simulation portion；
The rainwater aerial drainage simulation part is used for the aerial drainage situation of simcity roads rain inlet, includes: being mounted on the earth's surface diameter
Rain double-edged fine-toothed comb on the outlet at bottom in flow field simulation portion, the rainwater being connected below the outlet at bottom and with the outlet at bottom
Well, and the side branch being mounted on by the catch-basin side；
The depth of water and flow velocity measurement portion are arranged in the surface runoff modeling portion, nearby stablize for measuring the rain double-edged fine-toothed comb
The depth of water and flow velocity at water level；
The water flow let out under the side branch is accepted below the rainwater aerial drainage simulation part in the letdown flow measuring point,
Include: approach channel that is smooth and guiding the stream that sluices under side branch is mounted on the approach channel end, the triangle for measuring letdown flow
Weir plate, entrance is connected with the triangle weir plate, water level is lower than the triangle weir plate right-angled apices and outlet and the water storage portion
The waste canal being connected；And
The choking portion includes: for blocking the rain double-edged fine-toothed comb blocking member of the rain double-edged fine-toothed comb of certain area, and for blocking one
Determine the side branch blocking member of the side branch of area.
2. the experimental rig that research inlet for stom water chocking-up degree according to claim 1 influences water discharged amount, it is characterised in that:
Wherein, the surface runoff modeling portion includes: sink, at the discharge outlet of the sink side, with the storage
Water portion is connected and the tail-gate for adjusting the depth of water.
3. the experimental rig that research inlet for stom water chocking-up degree according to claim 1 influences water discharged amount, it is characterised in that:
Wherein, the rain double-edged fine-toothed comb blocking member includes: it is covered on the rain double-edged fine-toothed comb, blocked the plastic plate of water grid, and
The plastic plate is removably mounted on the fixing piece on the rain double-edged fine-toothed comb.
4. the experimental rig that research inlet for stom water chocking-up degree according to claim 1 influences water discharged amount, it is characterised in that:
Wherein, the side branch blocking member includes: being mounted on the ring flange in the side branch exit, covers certain area
The transparent baffle of the ring flange, and the transparent baffle is removably mounted on the installation part on the ring flange.
5. the experimental rig that research inlet for stom water chocking-up degree according to claim 1 influences water discharged amount, it is characterised in that:
Wherein, the water unit includes: the connecting tube that the water storage portion is connected with the surface runoff modeling portion, and setting
In the connecting tube, the water pump of regulating flow quantity.
6. a kind of test method that research inlet for stom water chocking-up degree influences water discharged amount, using any one of claim 1 to 5
The experimental rig is tested, which comprises the steps of:
Step 1. is using water unit by water in water storage portion according to surface runoff modeling portion described in predetermined amount of flow sustainable supply；
It is close that step 2. measures and records rain double-edged fine-toothed comb after the waterflow stabilization in surface runoff modeling portion, using the depth of water and flow velocity measurement portion
The depth of water and flow velocity at other fixed level, and record the water level before triangle weir plate；
The depth of water that step 3. gradually changes surface runoff modeling portion repeats step 2 every time after waterflow stabilization；
Step 4. gradually adjusts the flow of inlet water in surface runoff modeling portion using water unit, then repeats step every time
2 and 3.
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| CN109797838A (en) * | 2019-02-21 | 2019-05-24 | 河北工程大学 | A kind of flow monitoring equipment of rectangle catch-basin |
| CN110346111A (en) * | 2019-07-24 | 2019-10-18 | 中国电建集团华东勘测设计研究院有限公司 | The experimental rig that road grade and run-off influence inlet for stom water interception capacity |
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| CN109000731A (en) | 2018-12-14 |
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