CN202916069U - Device for generating oscillation wave to simulate sediment erosion and transportation characteristics - Google Patents
Device for generating oscillation wave to simulate sediment erosion and transportation characteristics Download PDFInfo
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- CN202916069U CN202916069U CN 201220472284 CN201220472284U CN202916069U CN 202916069 U CN202916069 U CN 202916069U CN 201220472284 CN201220472284 CN 201220472284 CN 201220472284 U CN201220472284 U CN 201220472284U CN 202916069 U CN202916069 U CN 202916069U
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Abstract
The utility model discloses a device for generating oscillation wave to simulate sediment erosion and transportation characteristics. The device for generating oscillation wave to simulate sediment erosion and transportation characteristics comprises a prolate flume, a columnar mud sample pipe, bed load sediment capturing devices and wave generating devices A mud inlet hole and mud outlet holes are arranged at the bottom of the prolate flume. The mud outlet holes are located on both sides of the mud inlet hole. The columnar mud sample pipe is connected with the mud inlet hole in a sealing manner. The mud outlet holes are connected with the bed load sediment capturing device in a sealing manner. The wave generating devices are arranged on both ends of the prolate flume. The wave generating devices comprise wave generating push plates, driving mechanisms and control mechanisms. The driving mechanisms drive the wave generating push plates to carry out piston movement in the prolate flume. The control devices are connected with the driving mechanisms. According to the utility model, different waveforms can be generated to erode the surface of original sediment and to simulate sediment erosion characteristics; the migration characteristics of sediment bed surface are disclosed; and the problems that wave simulation does not exist and maintaining the original structure of the sediment is difficult are solved.
Description
Technical field
The utility model relates to shallow lake and river system water ecological setting analogue technique field, relates in particular to the water tank device of a kind of indoor generation wave of oscillation simulation bed mud erosion and transmission feature.
Background technology
Lake or river drift easily corrode, suspend under the hydrodynamism, and this process can cause the variation of surface deposit nutrition release, biomass etc.Bed mud surface erosion rate is defined as the bed mud erosion amount of unit area bottom within the unit interval.The riverbed shearing stress is the important parameter in the Cohesive Sediment research, and it has directly determined the degree of depth that bed mud is etched.Yet, determine that riverbed shearing stress, control external force condition are very difficult.At present, the lab simulation that bed mud is corroded mainly contains concussion method, wave flume method and annular water tank method.The concussion method is a certain amount of S ﹠ W sample of packing in triangular flask, with concussion frequency Simulated Water power size.The method simply be easy to controlled condition and can organize more parallel, but volume is too small, can not well describe bed mud and corrode with stormy waves and strengthen the trend that increases progressively.Wave flume and annular water tank method are that the directed flow that adopts mechanical means to produce overlying water suspends bed mud.These two kinds of methods are easy to controlled condition, but the original state of testing bed mud is subject to certain destruction, and more shallow overlying water and lake actual conditions differ greatly.Keep sedimental original state extremely important, it not only is related to the result that the variable effect of the interface that is exposed to overlying water and structure thereof suspends again, and the burst size of nutriment is also produced vital impact.In the bed mud erosion experiment, choosing and designing of device is most important, and the result is produced material impact.The design of historical facts or anecdotes experiment device should can reflect actual conditions as far as possible.
Silt has four kinds of states at bed surface (bed surface layer or bottom), namely static, roll, jump and suspend.The static bed material that is called wherein, rolling is called traction load with jump, and suspending is called suspended load.Usually in the river or the bed mud that is etched of upstream, lake can have influence on the Features of Water Environment of downstream water body.Therefore ratio, the migration characteristics of the traction load of bed mud and suspended load were to understand sediment in the major issue of water body or bed surface transmission rule after research was corroded.After bed mud is etched, can transmit at water body or bed surface with the form of traction load and suspended load.Former studies is confined to only consider suspended load part or total erosion ratio.Fail both are separately considered, thereby traction load and suspended load composition that bed mud is risen after hanging are short in understanding.
Because the experiment that bed mud corrodes is not easy to investigate in the open air, this class experiment is carried out modeling effort in indoor laboratory usually.The mechanism of production of hydrodynamism mainly contains the effect of wave and lake current, and this device has designed a kind of at the water tank device of wave action in the erosion of simulation bed mud and transmission feature.
The utility model content
The utility model purpose: the purpose of this utility model be to solve shallow lake and river system because of the randomness of the complicacy of natural conditions and wave motion so that there is the problem that is difficult to obtain in wave, provide a kind of and produced that wave of oscillation simulation bed mud corrodes and the device of transmission feature, this device overcome in the prior art without the wave simulation and keep bed mud original state structure difficult, lack to bed mud rise outstanding after the problems such as understanding of traction load and suspended load composition.
Technical scheme: a kind of device that produces wave of oscillation simulation bed mud erosion and transmission feature described in the utility model comprises prolate shape tank, column mud sample pipe, bed load sediment acquisition equipment and wave generation device; The bottom surface of described prolate shape tank has into mud hole and mudhole, described mudhole is positioned at into the both sides in mud hole, described column mud sample pipe with enter the mud hole and be tightly connected, described mudhole and bed load sediment acquisition equipment are tightly connected, described wave generation device is arranged on the two ends of prolate shape tank, described wave generation device comprises makes ripple push pedal, driving mechanism and control gear, described driving mechanism drive is made the ripple push pedal and do the piston type motion in the prolate shape tank, and described control device is connected with driving mechanism.
Further improve technique scheme, described driving mechanism comprises push rod, rotating disk and motor, the driven by motor turntable rotation, rotating disk promotes push rod and seesaws, the push rod drive is made the ripple push pedal and do the piston type motion in the prolate shape tank, described control device is connected with motor, by the rotating speed of controlling motor and then the rotational frequency of controlling rotating disk.
Further improve technique scheme, described rotating disk big or small adjustable, the reciprocating amplitude of ripple push pedal is made in control, thereby obtains different wave height.
Further, be provided with the mud post in the described column mud sample pipe, the bottom of described mud post connects lifting jack by piston, and described lifting jack heads into this mud sample describedly to advance in the mud hole from bottom to top.
Described bed load sediment acquisition equipment is the sloping plate deposition case, and the base plate of described sloping plate deposition case is screwed in its bottom by screw thread.
The upper surface of described prolate shape tank has the wave height gaging hole, is provided with wave-height gauge in the described wave height gaging hole.
The push rod of described wave generation device and making between the ripple push pedal as hinged.
The principle of work of the device of above-mentioned generation wave of oscillation simulation bed mud erosion and transmission feature is: the driven by motor turntable rotation, and then ripple push pedal generation wave is made in promotion back and forth, wave height depends on the reciprocating amplitude of making the ripple push pedal, depends on wavelength and period of wave the reciprocating frequency of ripple push pedal and the amplitude made.Wave height as required, wavelength and period of wave, make the ripple push pedal by the size realization of control device and adjusting rotating disk and produce the simulation that various types of ripples are realized bed mud erosion and transport property in the cyclical movement in the form of piston of tank two ends.
The utility model compared with prior art, its beneficial effect is: (1) utilizes the driven by motor turntable rotation, and then drives and to make ripple push pedal to-and-fro movement, has realized the generation of different waves.(2) the column bed mud that utilizes vertical structure not to be disturbed carries out erosion experiment, has kept the bed mud primary characteristic, characterizes the actual erosion performance of bed mud.(3) adopt the bed load sediment acquisition equipment effectively to collect bed mud and play traction load after outstanding, calculate and corrode rear bed mud in water body or the suspended load of bed surface motion and composition and the ratio of traction load, disclose the bed mud migration characteristics, realized simultaneously catching the convenient of sample and collected measurement and clean.(4) accessible wave-height gauge, the wave height of measure water slot wave wave realizes under the wave action of simulation varying strength the shear action to bed mud.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is described wave generation device vertical view.
Fig. 3 is described bed load sediment acquisition equipment schematic diagram.
Among the figure: 1, prolate shape tank; 2, column mud sample pipe; 3, bed load sediment acquisition equipment; 4, wave generation device; 5, wave height gaging hole; 6, wave-height gauge; 7, enter the mud hole; 8, mudhole; 9, mud post; 10, piston; 11, lifting jack; 12, swash plate; 13, base plate; 14, make the ripple push pedal; 15, push rod; 16, rotating disk; 17, motor.
Embodiment
The below is elaborated to technical solutions of the utility model, but protection domain of the present utility model is not limited to described embodiment.
As shown in Figures 1 to 3, a kind of device that produces wave of oscillation simulation bed mud erosion and transmission feature is made of prolate shape tank 1, column mud sample pipe 2, bed load sediment acquisition equipment 3 and wave generation device 4.
The upper surface of described prolate shape tank 1 has wave height gaging hole 5, be provided with wave-height gauge 6 in the described wave height gaging hole 5, have into mud hole 7 in the middle of the lower surface under the described prolate shape tank 1, end by specific rubber band and silica gel and column mud sample pipe 2 is tightly connected, and have equal-sized two mudholes 8 entering both sides, mud hole, with specific rubber band and the silica gel two cover bed load sediment acquisition equipments 3 that are tightly connected respectively.
The described column mud sample pipe 2 interior mud posts 9 that arrange, the bottom of described mud post 9 connects lifting jack 11 by piston 10, enter mud hole 7 with what mud post 9 headed into prolate shape tank 1 from bottom to top, translational speed can manually be controlled, its objective is to remain mud post 9 surface with prolate shape tank 1 bottom maintenance level or exceed a bit a little, so that surperficial mud sample is subject to the horizontal flow shear action of current.The bed mud erosion rate is the lifting height of mud post 9 divided by duration of experiment.
Described bed load sediment acquisition equipment 3 built-in swash plates 12, guarantee that the silt that bed load sediment acquisition equipment 3 is caught no longer enters in the water body, the base plate 13 of bed load sediment acquisition equipment 3 is screwed in its bottom by screw thread, and base plate is detachable, and convenient the cleaning measured settled bed mud.
Described wave generation device 4 forms by making ripple push pedal 14, push rod 15, rotating disk 16, motor 17 and intelligent computer control device.Motor 17 drives rotating disks 16 rotations, and then the push rod 15 that promotion links to each other with rotating disk 16 seesaws, thereby drive is made ripple push pedal 14 piston types and moved forward and backward the generation wave.The motion amplitude of making ripple push pedal 14 can configure according to needed wave height the rotating disk of corresponding size, and its period of motion can by motor 17, be controlled by the intelligent computer control device.Make ripple push pedal 14 constant acceleration by control, constant speed and constant deceleration can simulate the various simple waveforms such as sinusoidal curve, triangle, square, trapezoidal, pulse.These waveforms can simply repeat also stackable, thereby simulate various oscillatory flows and non-oscillatory stream.
Its course of work is: the water that injects certain depth in the prolate shape tank, wave parameter according to required simulation, configure corresponding rotating disk 16, by intelligent computer control device control the push pedal of both parties in a lawsuit's ripple is turned round (one makes in the ripple push pedal and pushes away with 180 ° of out-phase, one makes the ripple push pedal draws outward), driving rotating disk 16 by control motor 17 rotates, and then the push rod 15 that drive is connected with rotating disk 16 moves, thereby control is made ripple push pedal 14 and is moved back and forth and produce required wave, and record corresponding wave height by wave-height gauge, current promote the column mud sample 9 by lifting jack 11 jack-up, surface mud sample corrodes under the horizontal flow shearing force effect of current, after bed load sediment arrived certain position, landing was collected to bed load sediment gathering-device 3.After a period of time was carried out in experiment, according to the unit weight that corrodes bed mud with collect to get the unit weight of bed load sediment, difference was the unit weight of suspended sediment, and then can obtain both proportion of composing, also can calculate the bed mud erosion ratio.
As mentioned above, although represented and explained the utility model with reference to specific preferred embodiment, it shall not be construed as the restriction to the utility model self.Under the spirit and scope prerequisite of the present utility model that does not break away from the claims definition, can make in the form and details various variations to it.
Claims (7)
1. a device that produces wave of oscillation simulation bed mud erosion and transmission feature is characterized in that, comprises prolate shape tank, column mud sample pipe, bed load sediment acquisition equipment and wave generation device; The bottom surface of described prolate shape tank has into mud hole and mudhole, described mudhole is positioned at into the both sides in mud hole, described column mud sample pipe with enter the mud hole and be tightly connected, described mudhole and bed load sediment acquisition equipment are tightly connected, described wave generation device is arranged on the two ends of prolate shape tank, described wave generation device comprises makes ripple push pedal, driving mechanism and control gear, described driving mechanism drive is made the ripple push pedal and do the piston type motion in the prolate shape tank, and described control device is connected with driving mechanism.
2. the device of generation wave of oscillation simulation bed mud erosion according to claim 1 and transmission feature is characterized in that, described driving mechanism comprises push rod, rotating disk and motor; Driven by motor turntable rotation, rotating disk promote push rod and seesaw, and the push rod drive is made the ripple push pedal and do the piston type motion in the prolate shape tank, and described control device is connected with motor.
3. the generation wave of oscillation according to claim 1 simulation bed mud corrodes and the device of transmission feature, it is characterized in that described rotating disk big or small adjustable.
4. the generation wave of oscillation according to claim 1 is simulated the device of bed mud erosion and transmission feature, it is characterized in that, be provided with the mud post in the described column mud sample pipe, the bottom of described mud post connects lifting jack by piston, and described lifting jack heads into this mud sample describedly to advance in the mud hole from bottom to top.
5. the device of generation wave of oscillation simulation bed mud erosion according to claim 1 and transmission feature is characterized in that, described bed load sediment acquisition equipment is the sloping plate deposition case, and the base plate of described sloping plate deposition case is screwed in its bottom by screw thread.
6. the device of generation wave of oscillation simulation bed mud erosion according to claim 1 and transmission feature is characterized in that, the upper surface of described prolate shape tank has the wave height gaging hole, is provided with wave-height gauge in the described wave height gaging hole.
7. the generation wave of oscillation according to claim 1 simulation bed mud corrodes and the device of transmission feature, it is characterized in that the push rod of described wave generation device and to make be hinged between the ripple push pedal.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201220472284 CN202916069U (en) | 2012-09-17 | 2012-09-17 | Device for generating oscillation wave to simulate sediment erosion and transportation characteristics |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201220472284 CN202916069U (en) | 2012-09-17 | 2012-09-17 | Device for generating oscillation wave to simulate sediment erosion and transportation characteristics |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104596797A (en) * | 2015-01-07 | 2015-05-06 | 河海大学 | Field sampling device for searching sediment suspension |
| CN110333048A (en) * | 2019-08-06 | 2019-10-15 | 交通运输部天津水运工程科学研究所 | A kind of novel and multifunctional expanded letter wave, stream experimental trough |
| CN114046961A (en) * | 2021-09-18 | 2022-02-15 | 浙江大学 | Sediment erosion testing system based on digital imaging technology |
| CN116148145A (en) * | 2023-01-10 | 2023-05-23 | 中国地质大学（北京） | Physical deposition simulation experiment device and experiment method for geological feature research |
-
2012
- 2012-09-17 CN CN 201220472284 patent/CN202916069U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104596797A (en) * | 2015-01-07 | 2015-05-06 | 河海大学 | Field sampling device for searching sediment suspension |
| CN110333048A (en) * | 2019-08-06 | 2019-10-15 | 交通运输部天津水运工程科学研究所 | A kind of novel and multifunctional expanded letter wave, stream experimental trough |
| CN110333048B (en) * | 2019-08-06 | 2024-01-26 | 交通运输部天津水运工程科学研究所 | Novel multifunctional wide body wave and flow experiment water tank |
| CN114046961A (en) * | 2021-09-18 | 2022-02-15 | 浙江大学 | Sediment erosion testing system based on digital imaging technology |
| CN116148145A (en) * | 2023-01-10 | 2023-05-23 | 中国地质大学（北京） | Physical deposition simulation experiment device and experiment method for geological feature research |
| CN116148145B (en) * | 2023-01-10 | 2024-04-02 | 中国地质大学（北京） | Physical deposition simulation experiment device and experiment method for geological feature research |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130501 Termination date: 20150917 |
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