CN109827874A - A kind of defeated shifting experimental provision of water sand interface pollution object and its implementation method - Google Patents
A kind of defeated shifting experimental provision of water sand interface pollution object and its implementation method Download PDFInfo
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Abstract
Include experimental solutions case the invention discloses a kind of defeated shifting experimental provision of water sand interface pollution object and its implementation method, experimental provision, is connected with sink main body；More pump linked systems, are formed by five groups of centrifugal pumps and valve in parallel；Positioned at the upstream pond of sink front end；Simulate riverbed sink main body section and sediment trapping pond；Multi-frequency water level control system, including drive system, transmission system and water level control gate；Sink end is equipped with afterbay.Experimental method, which specifically includes that establish indoor circulation sink and test husky slope, simulates the pollutant under different flood peaks and duration of flood driving in the defeated shifting at water sand interface by adjusting circular flow and depth of water size and frequency.The present invention is lauched the defeated shifting of husky interface pollution object to the driving of multi-frequency flood and is simulated, reflect influence of the river different parameters flood to water sand interface and phreatic zone contaminant transmission by collecting experimental data and relevant parameter；And experimental provision can change a variety of flood parameters such as flow, changes in flow rate frequency, water level, SEA LEVEL VARIATION frequency, test convenient, visual results.
Description
Technical field
The invention belongs to hydraulic engineering field, in particular to the defeated shifting experimental provision of a kind of water sand interface pollution object and its implementation
Method.
Background technique
In recent years, with the high speed development of social economy, a large amount of industrial and agricultural wastewater is discharged into surface water body, to river
Environmental health generates tremendous influence, and the undercurrent between surface water and phreatic water in phreatic zone exchanges, so that contaminated
Underground water enter in phreatic zone, in phreatic zone ecological circulation generate tremendous influence.And Flood makes surface water
The turbulent fluctuation of body is reinforced, and undercurrent exchange interaction increases, and the intensity at pollutant Inlet and outlet water sand interface increases, but multi-frequency flood is made
It is still still not clear there are many mechanistic problem with the defeated shifting of lower pollutant, while influence of the multi-frequency flood to the defeated shifting amount of pollutant
Etc. particular problems there is still a need for further further investigations.
Mainly use indoor circulating water channel mould quasi- real the research of the defeated shifting of pollutant in water sand interface and phreatic zone at present
It tests, but more the case where only considered constant flow and determine the controlled conditions such as water level, the complexity formed for variable-flow and varying head
Water sand interface under the conditions of flood and the defeated shifting problem of the pollutant in phreatic zone rarely have research.
Summary of the invention
Goal of the invention: in order to overcome the deficiencies in the prior art, it is defeated that the present invention provides a kind of water sand interface pollution object
Experimental provision and its implementation method are moved, the different in flow rate, depth of water in the simulation interface river Shui Sha and phreatic zone, flood frequency are able to solve
The defeated shifting problem of pollutant under many kinds of parameters such as rate, flood peak size.
Technical solution: to achieve the above object, the present invention provides a kind of defeated shifting experimental provision of water sand interface pollution object, including
Experimental solutions case pumps linked system, upstream pond, simulation riverbed sink, sediment trapping pond, multi-frequency water level control system and tail water more
Pond, the simulation riverbed sink are made of upstream pond, sediment trapping pond and afterbay, and the experimental solutions case by pumping linkage system more
System is connect with upstream pond, and sediment trapping pond is provided between the upstream pond and afterbay, is set above simulation riverbed sink
It is equipped with multi-frequency water level control system；The multi-frequency water level control system is by drive system, transmission system and water level control lock
Door is constituted, and is provided with rectification section and Sha Po in simulation riverbed sink, is provided with and disappears between the rectification section and upstream pond
It can trash rack.
Further, more pump linked systems are formed in parallel by five groups of centrifugal pumps and ZAZP type motor regulated valve, institute
It states five groups of centrifugal pump one end to connect with confluence interface, the confluence interface other end connects PVC water inlet pipe and Electromagnetic Flow is housed
Meter.
Further, the simulation riverbed sink is the body structure of five face water proofs, and bottom is metal base plate, and the back side is gold
Belong to plate, front is poly (methyl methacrylate) plate.
Further, upstream pond lower part connects the porous water inlet pipe of PVC, and porous water inlet pipe end is equipped with water stabilizing device,
The water stabilizing device is the poly (methyl methacrylate) plate that diameter is greater than the porous water inlet pipe caliber of PVC.
Further, the drive system is fixed by support and simulation riverbed sink upper surface, is arranged on the support
There is frequency converter, the frequency converter other end is connected with motor, and gate heave amplitude adjuster is provided on the motor.
Further, the transmission system is described by the first fixed pulley, the second fixed pulley, fixing buckle, steel strand wires and bracket
Bracket is fixed at simulation riverbed sink upper surface, and first fixed pulley is arranged on gate heave amplitude adjuster, the
Two fixed pulleys are arranged on bracket, and steel strand wires are provided between first fixed pulley and the second fixed pulley, and the steel strand wires are logical
Fixing buckle is crossed to fix.
Further, spring turntable is provided on the steel strand wires, the spring turntable is turned to by spring holder and steel strand wires
Fulcrum is constituted.
Further, the water level control gate is made of gate slot and lifting gate, and the gate slot is fixed on simulation
Riverbed inboard wall of cistern, lifting gate are fixed in gate slot, and gate slot is fixedly installed poly (methyl methacrylate) plate close to the side on husky slope,
The poly (methyl methacrylate) plate lower half portion is provided with water retaining separater, and poly (methyl methacrylate) plate top half is provided with porous plate, described porous
Plate outer surface is provided with sediment trapping net.Wherein water retaining separater is waterproof for carrying out water blocking sand, wherein the poly (methyl methacrylate) plate upper half
It is divided into the porous plate of porous permeable, while is stained with pore wire netting close to the side Sha Po, is referred to as sediment trapping net for sediment trapping.
Further, the tailrace pool bottom is provided with return pipe, is provided with overflow weir on the return pipe.
A kind of defeated implementation method for moving experimental provision of water sand interface pollution object as described above, includes the following steps:
(1) husky domatic shape is set according to requirement of experiment, adjusts lifting gate to initial extreme lower position, guarantees steel strand wires and lock
Door heave amplitude adjuster central axes are vertical, while the spring holder tightening of spring turntable, and steel strand wires are exceptionally straight, keep ZAZP type electronic
Control valve is closed, and is added in deionized water to simulation riverbed sink, and initial overflow height, addition institute's water requirement to experiment are reached
In liquor box；
(2) centrifugal pump is opened according to initial flow, opens ZAZP type motor regulated valve, make water flow in simulation riverbed sink
Interior abundant circulation；
(3) photographic camera is arranged with before simulation riverbed sink, opens camera, carries out Image Acquisition；
(4) appropriate temptation red colouring agent is added in experimental solutions case as tracer, stirs evenly, is allowed to melt completely
It closes；
(5) to tracer enter husky slope and reach exchange it is relatively stable after, frequency converter and motor are opened, according to setting
Rotational frequency generate needed for size and period half-wave sine water level signal, change simultaneously ZAZP type motor regulated valve input
Electric signal generates half-wave sinusoidal flow signal；
(6) ZAZP type motor regulated valve input electrical signal is made to return to initial value after completing a flow input period, electricity
Motivation drives the rotation of heave amplitude adjuster to close motor and frequency converter after a week；
(7) after testing tracer solution and exchanging stabilization in husky slope, flow valve is closed, takes out silt cleaning；
(8) change changes in flow rate frequency and amplitude and SEA LEVEL VARIATION frequency and amplitude, carry out repeating test.
The utility model has the advantages that compared with the prior art, the present invention has the following advantages:
(1) experimental provision of the present invention can change flow, changes in flow rate frequency, water level, SEA LEVEL VARIATION frequency etc.
Many kinds of parameters realizes the simulated experiment that the driving of multi-frequency flood is lauched the defeated shifting of pollutant in husky interface and phreatic zone, experiment side
Just, cheap, visual results；
(2) present invention utilizes physical principle and image acquisition technology, effectively illustrates the tracer solution of simulating pollution object
Defeated shifting path, reflect the influence that multi-frequency flood changes contaminant transportation, for flood driving be lauched husky interface and undercurrent
Technical support is provided with the defeated shifting problem of interior pollutant；
(3) more pump changes of the linked system by electric signal of the present invention, adjusts ZAZP type motor regulated valve and opens
Degree, to realize the flow of different change frequencies and amplitude, improves the efficiency and accuracy of manual control valve；
(4) multi-frequency water level control system of the present invention passes through the change of lifting gate position, realizes different changes
Change the water level of frequency and amplitude, so that the half-wave sine SEA LEVEL VARIATION generated effectively simulates flood.
(5) confluence interface of the present invention use streamlined symmetric design, can make it is more steady into water in-pipe flow,
Reduce the vibration together that water flow asymmetry generates；
(6) upstream pond of the present invention uses porous water inlet water inlet tube, and is equipped with water stabilizing device in pipe end, to have
The turbulent fluctuation of the reduction water flow of effect can also organize silt to flow backward and enter water inlet pipe, influence the normal operation of centrifugal pump.
(7) use of sediment trapping pond of the present invention and sediment trapping net had both avoided water and has flowed through the water generated after gate overflow
Influence of the fluidised form to the husky slope of experiment is flowed, and silt is prevented to enter circulating water pipe.
(8) spring holder of spring turntable of the present invention is tightened during simulating flood peak, and steel strand wires are exceptionally straight, and work as
Spring holder loosens when direction regulator turns to the other half, steel strand wires curling, to generate half-wave SEA LEVEL VARIATION.
Detailed description of the invention
Fig. 1 is experimental provision structural schematic diagram；
Fig. 2 is more pump linked system schematic diagrames；
Fig. 3 is the initial extreme lower position schematic diagram of gate；
Fig. 4 is the final extreme lower position schematic diagram of gate；
Fig. 5 is gate extreme higher position schematic diagram；
Gate position view when Fig. 6 is the take-up of spring turntable；
Fig. 7 is schematic diagram when spring turntable is most loose；
Fig. 8 is schematic diagram when spring turntable is most tight；
Fig. 9 is that gate lifting height calculates schematic diagram；
Figure 10 is gate frid schematic diagram；
1. experimental solutions case；Linked system is pumped 2. more；2-1. centrifugal pump；2-2. control valve；2-3. confluence interface；2-4.
Electromagnetic flowmeter；3. upstream pond；The porous water inlet pipe of 3-1.PVC；3-2. water-stabilizing board；3-3. energy dissipating trash rack；4. simulating riverbed
Sink；4-1. rectification section；4-2. sand slope；4-3. metal base plate；5. sediment trapping pond；6. multi-frequency water level control system；6-1. driving
System；6-1-1. gate heave amplitude adjuster；6-1-2. motor；6-1-3. frequency converter；6-1-4. support；6-2. power train
System；The first fixed pulley of 6-2-1.；6-2-2. fixing buckle；6-2-3. steel strand wires；6-2-4. the second fixed pulley 2；6-2-5. bracket；6-
2-6. spring turntable；6-2-6-1. spring holder；6-2-6-2. steel strand wires steering pivot；6-3. water level control gate；6-3-1. rising
Gate drops；6-3-2. gate slot；6-3-3. sediment trapping net；6-3-4. water retaining separater；6-3-5. porous plate；7. afterbay；7-1. overflowing
Flow weir；7-2. return pipe.
Specific embodiment
The present invention will be further explained with reference to the accompanying drawing.
As shown in Figure 1, the present invention includes experimental solutions case 1, more pump linked systems 2, upstream pond 3, simulation riverbed sink
4, sediment trapping pond 5, multi-frequency water level control system 6 and afterbay 7.
Wherein experimental solutions case 1 is located under simulation riverbed sink 4, is connected with simulation riverbed sink 4；More pump linked systems 2
It is formed in parallel by five groups of centrifugal pump 2-1 and ZAZP type motor regulated valve 2-2, five groups of water inlet pipes are connected to confluence interface 2-3, converge
Stream interface 2-3 is followed by the porous water inlet pipe 3-1 of PVC and equipped with electromagnetic flowmeter 2-4；Before upstream pond 3 is located at simulation riverbed sink 4
End, lower part connect the porous water inlet pipe 3-1 of PVC, and the end porous water inlet pipe 3-1 PVC is equipped with water stabilizing device 3-2, and water stabilizing device 3-2 is straight
Diameter is greater than the poly (methyl methacrylate) plate of water inlet pipe caliber, and upstream pond 3 is connected by energy dissipating trash rack 3-3 with rectification section 4-1, described whole
The stream section 4-1 other end is provided with experiment sand slope 4-2；Sediment trapping pond 5 is located at after experiment sand slope 4-2；Multi-frequency water level control system 6
Including drive system 6-1, transmission system 6-2 and water level control valve 6-3, drive system 6-1 by a frequency converter 6-1-3 connection
Motor 6-1-2 power is provided, drive gate to be gone up and down by gate heave amplitude adjuster 6-1-1, entire driving system
System 6-1 is fixed on sink by support 6-1-4, and transmission system 6-2 is by two fixed pulleys i.e. the first fixed pulley 6-2-1 and second
Fixed pulley 6-2-4 carries out the steering of traction steel strand wires 6-2-3, and the first fixed pulley 6-2-1 and the second fixed pulley 6-2-4 are fixed respectively
On gate heave amplitude adjuster 6-1-1 and bracket 6-2-5, steel strand wires 6-2-3 is fixed with fixing buckle 6-2-2；Tail
Pond 7 is set to entire sink tail portion, including overflow weir 7-1 and return pipe 7-2；The bottom of gullet is metal base plate.
As shown in figure 3, being equipped with spring turntable 6-2-6 on steel strand wires 6-2-3, water level control valve 6-3 is by gate slot 6-
3-2 and lifting altitude valve door 6-3-1 composition, lifting altitude valve door 6-3-1 are poly (methyl methacrylate) plate material.
As shown in figure 8, spring turntable 6-2-6 includes spring holder 6-2-6-1 and steel strand wires steering pivot 6-2-6-2.
As shown in figure 9, water level control valve 6-3 adjustable height calculation method isIts h is water
Level control valve door 6-3 adjustable height, L are the adjustable fixed pulley position lifting regulator 6-1-1 away from centre distance, and ω is motor 6-
1-2 rotational angular velocity, t are rotation time, and θ=ω t.
As shown in Figure 10, the water blocking that gate slot 6-3-2 is made of the poly (methyl methacrylate) plate of two pieces of waterproof upper porous in lower part
Partition 6-3-4, sediment trapping pond side gate slot plate surface are equipped with sediment trapping net 6-3-3, are metal-nylon web material matter；Water level control gate
6-3 is made of gate slot 6-3-2 and lifting gate 6-3-1, and gate slot 6-3-2 is fixed on simulation 4 inner wall of riverbed sink, goes up and down lock
Door 6-3-1 is fixed in gate slot 6-3-2, and gate slot 6-3-2 secures one piece of poly (methyl methacrylate) plate close to the side of sand slope 4-2,
Lower half portion is waterproof progress water blocking sand water retaining separater 6-3-4, and top half is the porous plate 6-3-5 of porous permeable,
It is stained with pore wire netting close to the husky slope side 3-4 simultaneously, is referred to as sediment trapping net 6-3-3 for sediment trapping.
A kind of simulation multi-frequency flood driving of the present invention is lauched the defeated shifting experimental method of husky interface pollution object, including such as
Lower step:
(1) husky slope 4-2 shape is set according to requirement of experiment, adjusts lifting altitude valve door 6-3-1 to initial lowest order
It sets, as shown in figure 3, guaranteeing that steel strand wires 6-2-3 is vertical with the gate heave amplitude central axes adjuster 6-1-1, while spring turntable
The spring holder 6-2-6-1 of 6-2-6 is tightened, and steel strand wires 6-2-3 is exceptionally straight, and ZAZP type motor regulated valve 2-2 is kept to close, and addition is gone
In ionized water to sink, reach initial overflow height, adds in institute's water requirement to experimental solutions case；
(2) centrifugal pump 2-1 is opened according to initial flow, opens ZAZP type motor regulated valve 2-2, makes water flow in recirculated water
It is sufficiently recycled in slot；
(3) photographic camera arrangement is opened into camera with before circulating water chennel, carries out Image Acquisition；
(4) the appropriate temptation red colouring agent of 1 addition stirs evenly as tracer, is allowed to melt completely in experimental solutions case
It closes；
(5) to tracer enter husky slope and reach exchange it is relatively stable after, open frequency converter 6-1-3 and motor 6-1-
2, the half-wave sine water level signal of size and period needed for generating according to the rotational frequency of setting changes simultaneously ZAZP type electric adjustable
Valve 2-2 input electrical signal is saved, half-wave sinusoidal flow signal is generated；
(6) ZAZP type motor regulated valve 2-2 input electrical signal is made to return to initial value after completing a flow input period,
Motor 6-1-2 and frequency converter 6-1-3 is closed in the rotation of motor drive heave amplitude adjuster after a week；
(7) after testing tracer solution and exchanging stabilization in husky slope 4-2, flow valve is closed, takes out silt cleaning；
(8) change changes in flow rate frequency and amplitude and SEA LEVEL VARIATION frequency and amplitude, carry out repeating test.
The above is only a preferred embodiment of the present invention, it should be pointed out that: for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (10)
1. a kind of defeated shifting experimental provision of water sand interface pollution object, it is characterised in that: including experimental solutions case, pump linked system,
Upstream pond, simulation riverbed sink, sediment trapping pond, multi-frequency water level control system and afterbay, simulation riverbed sink is by upper
Swim pond, sediment trapping pond and afterbay is constituted, and the experimental solutions case is connect by mostly pump linked system with upstream pond, it is described on
It is provided with sediment trapping pond between swimming pond and afterbay, is provided with multi-frequency water level control system above simulation riverbed sink；
The multi-frequency water level control system is made of drive system, transmission system and water level control gate, simulation riverbed sink
It is inside provided with rectification section and Sha Po, energy dissipating trash rack is provided between the rectification section and upstream pond.
2. a kind of defeated shifting experimental provision of water sand interface pollution object according to claim 1, it is characterised in that: more pump connection
Dynamic system is formed in parallel by five groups of centrifugal pumps and ZAZP type motor regulated valve, and described five groups of centrifugal pump one end and confluence interface connect
It connects, the confluence interface other end connects PVC water inlet pipe and electromagnetic flowmeter is housed.
3. a kind of defeated shifting experimental provision of water sand interface pollution object according to claim 1, it is characterised in that: the simulation river
Bed sink is the body structure of five face water proofs, and bottom is metal base plate, and the back side is metal plate, and front is poly (methyl methacrylate) plate.
4. a kind of defeated shifting experimental provision of water sand interface pollution object according to claim 1, it is characterised in that: the upper water
Pond lower part connects the porous water inlet pipe of PVC, and porous water inlet pipe end is equipped with water stabilizing device, and the water stabilizing device is that diameter is more greater than PVC
The poly (methyl methacrylate) plate of hole water inlet pipe caliber.
5. a kind of defeated shifting experimental provision of water sand interface pollution object according to claim 1, it is characterised in that: the driving system
System is fixed by support and simulation riverbed sink upper surface, and frequency converter is provided on the support, and the frequency converter other end connects
It is connected to motor, gate heave amplitude adjuster is provided on the motor.
6. a kind of defeated shifting experimental provision of water sand interface pollution object according to claim 1, it is characterised in that: the power train
For system by the first fixed pulley, the second fixed pulley, fixing buckle, steel strand wires and bracket, the bracket is fixed at simulation riverbed sink
Upper surface, first fixed pulley is arranged on gate heave amplitude adjuster, the second fixed pulley is arranged on bracket, and described the
Steel strand wires are provided between one fixed pulley and the second fixed pulley, the steel strand wires are fixed by fixing buckle.
7. a kind of defeated shifting experimental provision of water sand interface pollution object according to claim 6, it is characterised in that: the steel strand wires
On be provided with spring turntable, the spring turntable is made of spring holder and steel strand wires steering pivot.
8. a kind of defeated shifting experimental provision of water sand interface pollution object according to claim 1, it is characterised in that: the water level control
Check door is made of gate slot and lifting gate, and the gate slot is fixed on simulation riverbed inboard wall of cistern, and lifting gate is fixed on
In gate slot, gate slot is fixedly installed poly (methyl methacrylate) plate, the poly (methyl methacrylate) plate lower half portion setting close to the side on husky slope
There is water retaining separater, poly (methyl methacrylate) plate top half is provided with porous plate, and the porous plate outer surface is provided with sediment trapping net.
9. a kind of defeated shifting experimental provision of water sand interface pollution object according to claim 1, it is characterised in that: the afterbay
Bottom is provided with return pipe, is provided with overflow weir on the return pipe.
10. a kind of defeated implementation method for moving experimental provision of water sand interface pollution object as claimed in one of claims 1 to 9, feature
It is, includes the following steps:
(1) husky domatic shape is set according to requirement of experiment, adjusts lifting gate to initial extreme lower position, guarantees steel strand wires and gate liter
Drop amplitude regulator central axes are vertical, while the spring holder tightening of spring turntable, and steel strand wires are exceptionally straight, keep ZAZP type motorized adjustment
Valve is closed, and in addition deionized water to simulation riverbed sink, reaches initial overflow height, addition institute's water requirement to experimental solutions
In case；
(2) centrifugal pump is opened according to initial flow, opens ZAZP type motor regulated valve, fill water flow in simulation riverbed sink
Divide circulation；
(3) photographic camera is arranged with before simulation riverbed sink, opens camera, carries out Image Acquisition；
(4) appropriate temptation red colouring agent is added in experimental solutions case as tracer, stirs evenly, is allowed to merge completely；
(5) to tracer enter husky slope and reach exchange it is relatively stable after, frequency converter and motor are opened, according to turning for setting
The half-wave sine water level signal of size and period needed for dynamic frequency generates changes simultaneously ZAZP type motor regulated valve input telecommunications
Number, generate half-wave sinusoidal flow signal；
(6) ZAZP type motor regulated valve input electrical signal is made to return to initial value, motor after completing a flow input period
The rotation of heave amplitude adjuster is driven to close motor and frequency converter after a week；
(7) after testing tracer solution and exchanging stabilization in husky slope, flow valve is closed, takes out silt cleaning；
(8) change changes in flow rate frequency and amplitude and SEA LEVEL VARIATION frequency and amplitude, carry out repeating test.
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| CN201910063619.XA CN109827874B (en) | 2019-01-23 | 2019-01-23 | Water-sand interface pollutant transport experimental device and implementation method thereof |
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| CN109827874B (en) | 2021-07-09 |
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