CN203213070U - Model test device for researching damage of flowing soil of levee of river - Google Patents
Model test device for researching damage of flowing soil of levee of river Download PDFInfo
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- CN203213070U CN203213070U CN 201320205077 CN201320205077U CN203213070U CN 203213070 U CN203213070 U CN 203213070U CN 201320205077 CN201320205077 CN 201320205077 CN 201320205077 U CN201320205077 U CN 201320205077U CN 203213070 U CN203213070 U CN 203213070U
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Abstract
The utility model discloses a model test device for researching damage of flowing soil of a levee of a river. The device comprises three parts of a variable water head water supply device, a box type model groove and a data acquisition unit, wherein an upstream and downstream double-adjusting water level system comprising the variable water head water supply device in the upstream direction and a water level control box of the box type model groove in the downstream direction applies time variable water head difference on a soil sample and simulates the osmosis of different water heads during flood peak of upstream and downstream of the levee, so that seepage failures such as seepage development, deformation, piping and the like of the soil sample are realized; besides, measuring devices such as a liquid level sensor, a birotor flow meter and the like are used, so that a corresponding seepage field can be obtained; occurrence and development processes of the river under various hydraulic conditions can be simulated in the manner of changing positions of flowing soil hole in the box type model groove; and the model test device is applicable to research of levee construction seepage and seepage failure and provides actual guidance for construction and design of levee construction.
Description
Technical field
The utility model relates to a kind of model test apparatus that rivers embankment stream soil destroys of studying, and belongs to hydraulic engineering physical experiments field.
Background technology
Rivers embankment seepage failure is very big to the harm of the destruction of river course dykes and dams, and it is many that quantity takes place for it, has a very wide distribution, and the great dangerous situation that inrushes easily takes place, and the people's life and health and property safety all caused serious threat.So strengthen the research to rivers embankment stream soil destruction, concern national economy and the people's livelihood, significant.The seepage failure problem of levee foundation has been subjected to the common concern of science and engineering circle.
At present, flow the scope that the native numerical simulation of destroying is confined to the finite element seepage simulation more about the rivers embankment, but it can't consider the water and soil mechanism that particle runs off and causes, so be difficult to the evolution that comprehensive sign rivers embankment stream soil destroys.Than finite element numerical simulation, the physical experiments principle is simple, and phenomenon is more directly perceived, and is with strong points.
Rivers embankment in the past flows native damage model test method, general applies head difference in the soil sample upstream, the situation of bearing different heads with levee foundation upstream and downstream in the engineering reality simultaneously also has certain difference, the osmosis of sign levee foundation upstream and downstream under different heads between flood period that can not science.In addition, the laboratory apparatus of former studies seepage failure is generally narrow groove, size is less, general artificial observation data, precision is lower, and adopt the mode of hand-operated lifting head more, the upstream head can not be controlled automatically, also can't monitor the dynamic change of seepage field in the seepage deformation process, can not obtain to flow the hydraulic parameters of transient state in the native evolution, be difficult to more accurately reflect the non-homogeneous seepage flow of rivers embankment unsaturation and seepage failure phenomenon, can not satisfy the requirement of seepage deformation damage studies such as rivers embankment stream soil.
So need a kind of new technical scheme to address the above problem.
Summary of the invention
For solving the problems of the technologies described above, the utility model provides a kind of model test apparatus that can accurately also comprehensively characterize the stream soil destruction evolution of the whole soil body of simulating the rivers embankment.
For achieving the above object, the utility model adopts following technical scheme:
A kind of model test apparatus of studying rivers embankment stream soil destruction, comprise varying head water supply installation, box model groove, data acquisition unit: box model groove upstream is provided with spiral water inlet, spiral water inlet links to each other with the outlet pipe of the portable feed tank of varying head water supply installation through the water inlet rubber hose, porous disc is installed in water inlet right side and downstream, box model groove lateral surface diverse location is provided with a plurality of liquid level sensors, the downstream is provided with water level control box, sidewall bottom, the rightmost side has spillway hole, and the spillway hole bottom is connected to duplex rotor meter; The organic glass cover plate is added a cover on box model groove top, uses a plurality of bolt between organic glass cover plate and the box model groove, has the native hole of a plurality of streams on the organic glass cover plate, flows the glass stopper shutoff of aperture, native hole; Three faces are provided with machine glass water baffle around flowing native hole, make the water of band sand by collecting a mouthful discharge.
Described varying head water supply installation comprises portable feed tank, sister block, hawser, long plank and movable support, and sister block is fixed on the long plank, and is installed on the movable support.Be carved with scale on the long plank, portable feed tank is connected in the sister block system by hawser; There is water inlet pipe in portable feed tank left side, links to each other with water intaking valve and plastic water pipe respectively, and outlet pipe is arranged at the bottom, links to each other with box model groove upstream water inlet through the water inlet rubber hose.
Described level of tail water control cabinet is positioned at porous disc right side, downstream, and the water level control box left side top outside links to each other with a duplex rotor meter through water intaking valve, rubber water pipe, and the duplex rotor meter outside links to each other with the downstream water inlet pipe through connecting the rubber water pipe; The water level control box right side evenly has the water level adjustment hole from top to bottom, the glass stopper shutoff of water level adjustment hole.
The native hole of described stream and downstream spillway hole are the drainage outlet of box model groove, wherein, flow native hole draining band sand, the seepage flow outlet that simulation rivers embankment stream soil destroys; The draining of downstream spillway hole, sediment outflow not, the normal seepage flow water outlet of simulation rivers embankment.
Described data acquisition unit is made up of duplex rotor meter, liquid level sensor, data acquisition and transport module and data terminal.
The beneficial effects of the utility model:
1, the device that provides a kind of new simulation rivers embankment stream soil to destroy;
2, its two water transfer position systems of upstream and downstream that form by the water level control box of SCM Based intelligent head control system and box model groove downstream direction, soil sample is applied time dependent head difference, can accurately reproduce the seepage deformation situation of levee foundation than the osmosis of simulation levee foundation upstream and downstream under different heads between flood period of science;
3, by changing the mode of box model concentrated flow soil hole site, can simulate the evolution that the stream soil under the various hydraulics of rivers embankment destroys;
4, by measurement mechanisms such as liquid level sensor, duplex rotor meter are set, can obtain the hydraulic parameters of transient state in the seepage flow evolution, the dynamic change of seepage field is able to more accurately reflect the non-homogeneous seepage flow of rivers embankment unsaturation and seepage failure phenomenon in the omnidistance monitoring seepage deformation process.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is operating principle schematic diagram of the present utility model.
Among the figure, 1, the organic glass cover plate, 2, porous disc, 3, the downstream porous disc, 4, flow native hole, 5, the organic glass water baffle, 6, collect mouth, 7, liquid level sensor, 8, data acquisition and transport module, 9, data terminal, 10, connect the rubber water pipe, 11, the rubber water pipe, 12, water intaking valve, 13, the water level adjustment hole, 14, glass stopper, 15, duplex rotor meter, 16, connect the rubber water pipe, 17, the water outlet rubber hose, 18, duplex rotor meter, 19, spiral water inlet, 20, the water inlet rubber hose, 21, sister block, 22, hawser, 23, portable feed tank, 24, overfall, 25, water intaking valve, 26, water inlet pipe, 27, plastic water pipe, 28, movable support, 29, spillway hole, 30, outlet pipe, 31, long plank, 32, box model groove, 33, water level control box.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, further illustrate the utility model, should understand these embodiment only is used for explanation the utility model and is not used in restriction scope of the present utility model, after having read the utility model, those skilled in the art all fall within the application's claims institute restricted portion to the modification of the various equivalent form of values of the present utility model.
As shown in Figure 1, the utility model discloses a kind of model test apparatus that rivers embankment stream soil destroys of studying, comprise the varying head water supply installation, box model groove, data acquisition unit: box model groove 32 upstreams are provided with spiral water inlet 19, link to each other with the outlet pipe 30 of the portable feed tank 23 of varying head water supply installation through water inlet rubber hose 20, porous disc 2 is installed on spiral water inlet 19 right sides, downstream direction is installed downstream porous disc 3, box model groove 32 lateral surface diverse locations are provided with a plurality of liquid level sensors, the downstream is provided with water level control box 33, sidewall bottom, the rightmost side has spillway hole 29, and spillway hole 29 bottoms are connected to duplex rotor meter 18; Organic glass cover plate 1 is added a cover on box model groove 32 tops, uses a plurality of bolt between organic glass cover plate 1 and the box model groove 32, and the cover plate end face has the native hole 4 of a plurality of streams, flows the 4 apertures glass stopper shutoff of native hole; Three faces are provided with machine glass water baffle 5 around flowing native hole, make the water of band sand by collecting mouthful 6 discharges.
Described varying head water supply installation comprises portable feed tank 23, sister block 21, hawser 22, long plank 31 and movable support 28, and sister block 21 is fixed on the long plank 31, and is installed on the movable support 28.Be carved with scale on the long plank 31, portable feed tank 23 is connected in the sister block system by hawser 22; There is water inlet pipe 26 in portable feed tank 23 left sides, link to each other with water intaking valve 25 and plastic water pipe 27 respectively, and outlet pipe 30 is arranged at the bottom, link to each other with box model groove upstream water inlet 19 through water inlet rubber hose 20.
The native hole 4 of described stream and downstream spillway hole 29 are the drainage outlet of box model groove, wherein, flow native hole 4 draining band sand, and the seepage flow that simulation rivers embankment stream soil destroys exports; 29 drainings of downstream spillway hole, sediment outflow not, the normal seepage flow water outlet of simulation rivers embankment.
Described data acquisition unit is made up of duplex rotor meter 15, duplex rotor meter 18, liquid level sensor 7, data acquisition and transport module 8 and data terminal 9.
Described level of tail water control cabinet 33 is positioned at downstream porous disc 3 right sides, the water level control box 33 left side top outside links to each other with a duplex rotor meter 15 through water intaking valve 12, rubber water pipe 11, and duplex rotor meter 15 outsides link to each other with the downstream water inlet pipe through connecting rubber water pipe 16; Water level control box 33 right sides evenly have water level adjustment hole 13 from top to bottom, 14 shutoff of water level adjustment hole 13 usefulness glass stoppers.
The operating principle of the model test apparatus of the utility model rivers embankment stream soil destruction evolution is as follows:
As shown in Figure 1 and Figure 2, in box model groove 32, fill soil sample, layering filling, every layer has been loaded and has just carried out compacting, exhaust and saturated processing; With level of tail water control cabinet 33 the soil sample level of tail water is stabilized in a certain water level, the upstream utilizes the varying head water supply installation to increase head gradually, the osmosis of simulation rivers embankment upstream and downstream under different heads during the flood peak, and open the glass stopper in a native hole 4 of stream, under the effect of head difference, current form seepage field through porous disc 2 in box model groove soil sample; Each head data constantly of the diverse location soil body in the liquid level sensor vasculum pattern type groove 32; The flow in whole seepage flow development, the deformation process is monitored and recorded to duplex rotor meter 18 in real time, note the experimental phenomena in observation, recorded stream soil hole 4 etc., and in time measure the native hole of stream 4 outer seepage discharge and the sand production rates of collecting mouth 6, and until soil sample stream soil taking place destroys, test stops; Other conditions are constant, constantly change the position in the native hole 4 of stream, namely open organic glass cover plate 1 successively and flow the glass stopper in native hole 4 away from each of upstream, repeat above each step, finish out many groups of different tests of 4 positions, ease hole; Analyze recording data such as head, flow, obtain corresponding seepage field, characterize so that the rivers embankment is flowed native breakoff phenomenon.
Claims (2)
1. study the model test apparatus that rivers embankment stream soil destroys for one kind, comprise varying head water supply installation, box model groove, data acquisition unit, it is characterized in that: box model groove upstream is provided with spiral water inlet, spiral water inlet links to each other with the outlet pipe of the portable feed tank of varying head water supply installation through the water inlet rubber hose, porous disc is installed in water inlet right side and downstream, box model groove lateral surface diverse location is provided with a plurality of liquid level sensors, the downstream is provided with water level control box, sidewall bottom, the rightmost side has spillway hole, and the spillway hole bottom is connected to duplex rotor meter; The organic glass cover plate is added a cover on box model groove top, uses a plurality of bolt between organic glass cover plate and the box model groove, has the native hole of a plurality of streams on the organic glass cover plate, flows the glass stopper shutoff of aperture, native hole; Three faces are provided with machine glass water baffle around flowing native hole, make the water of band sand by collecting a mouthful discharge;
Described varying head water supply installation comprises portable feed tank, sister block, hawser, long plank and movable support, sister block is fixed on the long plank, and be installed on the movable support, be carved with scale on the long plank, portable feed tank is connected in the sister block system by hawser; There is water inlet pipe in portable feed tank left side, links to each other with water intaking valve and plastic water pipe respectively, and outlet pipe is arranged at the bottom, links to each other with box model groove upstream water inlet through the water inlet rubber hose;
Described level of tail water control cabinet is positioned at porous disc right side, downstream, and the water level control box left side top outside links to each other with a duplex rotor meter through water intaking valve, rubber water pipe, and the duplex rotor meter outside links to each other with the downstream water inlet pipe through connecting the rubber water pipe; The water level control box right side evenly has the water level adjustment hole from top to bottom, the glass stopper shutoff of water level adjustment hole.
2. research rivers embankment according to claim 1 flows the model test apparatus that soil destroys, and it is characterized in that: described data acquisition unit is made up of duplex rotor meter, liquid level sensor, data acquisition and transport module, data terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN 201320205077 CN203213070U (en) | 2013-04-19 | 2013-04-19 | Model test device for researching damage of flowing soil of levee of river |
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| CN 201320205077 CN203213070U (en) | 2013-04-19 | 2013-04-19 | Model test device for researching damage of flowing soil of levee of river |
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| CN104727265A (en) * | 2015-04-07 | 2015-06-24 | 董纪全 | Risk prediction method for crossing-dyke sluice |
| CN104846772A (en) * | 2015-05-20 | 2015-08-19 | 长江水利委员会长江科学院 | Method for calculating starting speed of channel deposit blocks under the action of hyperconcentrated flow |
| CN104880396A (en) * | 2015-05-26 | 2015-09-02 | 上海大学 | Soil body two-direction seepage model device under external load action and testing method |
| CN105178243A (en) * | 2015-08-07 | 2015-12-23 | 黄河水利委员会黄河水利科学研究院 | Hydraulic model capable of dynamically simulating relocation diffusion process of sediment to pollutants |
| CN106053762A (en) * | 2016-07-05 | 2016-10-26 | 长沙理工大学 | Lakeside embankment seepage and deformation characteristics testing apparatus and method |
| CN106644841A (en) * | 2017-02-22 | 2017-05-10 | 辽宁工程技术大学 | Simulation test device for studying underground engineering piping phenomenon |
| CN106644884A (en) * | 2016-12-13 | 2017-05-10 | 河海大学 | Varying water head generation device |
| CN110133224A (en) * | 2019-05-22 | 2019-08-16 | 华北水利水电大学 | The simulation test device of dyke building seepage failure development process |
| CN112986536A (en) * | 2021-02-22 | 2021-06-18 | 中国水利水电科学研究院 | Device and method for simulating contact scouring damage of crossing-dike culvert pipe |
| CN113155698A (en) * | 2021-04-06 | 2021-07-23 | 长江水利委员会长江科学院 | Physical simulation device for large-scale embankment piping dangerous case evolution mechanism |
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| CN104727265B (en) * | 2015-04-07 | 2016-05-11 | 董纪全 | One is worn dike culverts and water gates dangerous situation Forecasting Methodology |
| CN104727265A (en) * | 2015-04-07 | 2015-06-24 | 董纪全 | Risk prediction method for crossing-dyke sluice |
| CN104846772A (en) * | 2015-05-20 | 2015-08-19 | 长江水利委员会长江科学院 | Method for calculating starting speed of channel deposit blocks under the action of hyperconcentrated flow |
| CN104846772B (en) * | 2015-05-20 | 2016-09-07 | 长江水利委员会长江科学院 | The measuring method of channel deposit block initial velocity under hyper-concentration flow effect |
| CN104880396B (en) * | 2015-05-26 | 2017-12-05 | 上海大学 | The soil body two is to flow model in porous media device and method of testing under outside charge function |
| CN104880396A (en) * | 2015-05-26 | 2015-09-02 | 上海大学 | Soil body two-direction seepage model device under external load action and testing method |
| CN105178243A (en) * | 2015-08-07 | 2015-12-23 | 黄河水利委员会黄河水利科学研究院 | Hydraulic model capable of dynamically simulating relocation diffusion process of sediment to pollutants |
| CN106053762A (en) * | 2016-07-05 | 2016-10-26 | 长沙理工大学 | Lakeside embankment seepage and deformation characteristics testing apparatus and method |
| CN106053762B (en) * | 2016-07-05 | 2018-03-30 | 长沙理工大学 | A kind of embankment seepage flow along the lake and deformation behaviour experimental rig |
| CN106644884A (en) * | 2016-12-13 | 2017-05-10 | 河海大学 | Varying water head generation device |
| CN106644841A (en) * | 2017-02-22 | 2017-05-10 | 辽宁工程技术大学 | Simulation test device for studying underground engineering piping phenomenon |
| CN106644841B (en) * | 2017-02-22 | 2023-10-03 | 辽宁工程技术大学 | Analogue test device of research underground construction engineering piping phenomenon |
| CN110133224A (en) * | 2019-05-22 | 2019-08-16 | 华北水利水电大学 | The simulation test device of dyke building seepage failure development process |
| CN112986536A (en) * | 2021-02-22 | 2021-06-18 | 中国水利水电科学研究院 | Device and method for simulating contact scouring damage of crossing-dike culvert pipe |
| CN112986536B (en) * | 2021-02-22 | 2022-02-08 | 中国水利水电科学研究院 | Device and method for simulating contact scouring damage of crossing-dike culvert pipe |
| CN113155698A (en) * | 2021-04-06 | 2021-07-23 | 长江水利委员会长江科学院 | Physical simulation device for large-scale embankment piping dangerous case evolution mechanism |
| CN113155698B (en) * | 2021-04-06 | 2022-09-13 | 长江水利委员会长江科学院 | Physical simulation device for large-scale embankment piping dangerous case evolution mechanism |
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