CN206489035U - A kind of simulation test device of Study of The Underground architectural engineering Piping phenomenon - Google Patents
A kind of simulation test device of Study of The Underground architectural engineering Piping phenomenon Download PDFInfo
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- CN206489035U CN206489035U CN201720159215.7U CN201720159215U CN206489035U CN 206489035 U CN206489035 U CN 206489035U CN 201720159215 U CN201720159215 U CN 201720159215U CN 206489035 U CN206489035 U CN 206489035U
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Abstract
The utility model provides a kind of simulation test device of Study of The Underground architectural engineering Piping phenomenon, including experiment casing, stressed press perpendicular device, SCM Based intelligent head control system and microscopic observation device are applied to soil sample in chamber body, experiment casing has water inlet pipe to be connected through water intaking valve with the SCM Based intelligent head control system on the left of upstream, has outlet pipe on the right side of downstream；The experiment casing top is sealed with lucite cover plate, and the lucite lid surface is provided with multiple piping mouthful along upstream to downstream and blocked with plug, and current meter is provided with the piping mouthful and the water inlet pipe.The experimental rig of the utility model simulation piping soil under action body destruction, water table gradient, seepage paths length can be adjusted as needed, so as to closer to reality, measure under the effect of different water velocities, the Piping phenomenon of the soil body under different seepage paths length, under different vertical pressure.
Description
Technical field：
The utility model belongs to the experimental rig of Piping phenomenon, more particularly to a kind of Study of The Underground architectural engineering Piping phenomenon
Simulation test device.
Background technology：
As skyscraper and high-rise building are more and more, the underground engineering such as corresponding foundation ditch is also more and more deeper.
While pattern foundation pit supporting structure, it is often necessary to using the level of ground water in the methods such as well-points dewatering reduction foundation ditch so that inside and outside foundation ditch
Head difference is huge, and artificial increases the possibility that foundation ditch produces seepage deformation.Infiltration is due to that groundwater pressure is unbalanced
The process of water seepage flow is formed, and the displacement of sand grains can be caused by permeating, it is generally divided into：Flow soil, piping, contact scour and connect
Touch and be lost in four kinds of failure modes, great mass of data shows that piping in foundation pit harm is maximum.In order to ensure the building security of underground engineering, therefore
The seepage failure problem such as piping receives the common concern of academic and engineering circles.In order to study the mechanism of piping, it is necessary to a kind of mould
Intend the experimental rig that active development is corroded in piping, the data sheet one that existing piping experimental rig is drawn, and shortage to exist to the soil body
The correlative study of Piping phenomenon occurs under different pressures.Therefore being badly in need of a kind of new experimental rig of offer can not only truly simulate
The condition and process of soil body piping development, real-time monitoring tubular, which gushes soil body microscopical structure in evolution, waterpower, mechanical characteristic, drills
Become, and a variety of data about piping can be measured simultaneously, so that carrying out comparative study draws corresponding rule, deeply to grind
Study carefully piping mechanism and reliable basis are provided.
Utility model content：
For the defect of prior art, the utility model offer is a kind of can to measure underground structrue engineering Piping phenomenon simultaneously
The simulation test device of a variety of related datas.
The utility model is adopted the following technical scheme that：A kind of simulated test of Study of The Underground architectural engineering Piping phenomenon is provided
Device, including test casing, stressed press perpendicular device, SCM Based intelligent head are applied to soil sample in chamber body
Control system and microscopic observation device, experiment casing have water inlet pipe through water intaking valve and the SCM Based intelligence on the left of upstream
Head control system is connected, and has outlet pipe on the right side of downstream；Upstream end forms water inlet provided with porous disc interval in the chamber body
Room and soil sample accommodating chamber, the soil sample accommodating chamber is corresponding to test the permeable hole that casing front side wall is provided with multiple regular arrays,
The experiment casing top is sealed with lucite cover plate, and the lucite lid surface is provided with multiple pipes along upstream to downstream
Gush mouth and blocked with plug, current meter is installed at the piping mouthful and the water inlet pipe.
The SCM Based intelligent head control system includes head lowering or hoisting gear, controls the electricity of head lowering or hoisting gear
The delivery port of tank is connected with the water inlet pipe in the control cabinet of machine and controlled motor, the head lowering or hoisting gear.
The microscopic observation device is 10 times to 220 times of Olympus body microscope and ccd video camera by multiplication factor
Composition.
The press perpendicular device includes base and the multistage hydraulic cylinder being fixed on base, and shown experiment casing is placed in institute
State on base, the multistage hydraulic cylinder is acted on to pressurize step by step on the lucite cover plate to soil sample, and every grade of pressurized control exists
0.1~0.2kPa.
The lateral wall of the experiment casing is poly (methyl methacrylate) plate.
The piping mouthful equidistantly distributed.
It is provided with the piping mouth and holds emery disc.
As shown from the above technical solution, the utility model compared with prior art, has the following advantages that：The Study of The Underground
It is the water velocity simulated in the simulation test device of architectural engineering Piping phenomenon, process of the test, seepage paths length, vertical suffered by the soil body
Pressure controllable, can measure a variety of related datas of Piping phenomenon simultaneously, realize when observation soil body generator tube gushes critical speed and ooze
Electrical path length draws the influence that water velocity is lost in particle to the influence degree of piping with this；Analytical soil sample is at various pressures
The changing rule of piping critical speed；The changing rule and piping grain diameter ratio of lower critical particle diameter different in flow rate；Simultaneously
Pass through the visualization of the more preferable implementation model of experimental rig energy.
Brief description of the drawings：
The simulation test device structure for the Study of The Underground architectural engineering Piping phenomenon that Fig. 1 provides for the utility model embodiment
Schematic diagram；
In the present embodiment：1- control cabinets, 2- motors, 3- head lowering or hoisting gears, 4- tanks, 5- water inlet pipes, 6- water intaking valves, 7-
Lucite cover plate, 8- porous discs, 9- piping mouthful, 10- current meters, 11- Olympus body microscopes, 12-CCD video cameras, 13-
Test casing, 131- intake chambers, 132- soil sample accommodating chambers, 14- outlet pipes, 15- permeable holes, 16- outlet valves, 17- press perpendiculars
Device, 18- bases, 19- multistage hydraulic cylinders.
Embodiment：
With reference to the accompanying drawings and examples, embodiment of the present utility model is described in further detail.Below
Embodiment is used to illustrate the utility model, but is not limited to scope of the present utility model.
Refer to shown in Fig. 1, a kind of simulated test of Study of The Underground architectural engineering Piping phenomenon disclosed in the utility model
Device, including be made up of poly (methyl methacrylate) plate experiment casing 13, to soil sample in experiment casing 13 apply stressed press perpendicular dress
Put 17, SCM Based intelligent head control system and microscopic observation device.Experiment casing 13 has water inlet pipe 5 to pass through on the left of upstream
Water intaking valve 6 is connected with the SCM Based intelligent head control system, has outlet pipe 14 on the right side of downstream；The experiment casing
Upstream end forms intake chamber 131 and soil sample accommodating chamber 132 provided with the interval of porous disc 8 in 13, and the soil sample accommodating chamber 132 is corresponding
Test the permeable hole 15 that the front side wall of casing 13 is provided with multiple regular arrays, a diameter of 30mm, for being permeated in process of the test
The water come up can drain without influenceing experiment as early as possible, and the experiment top lucite cover plate 7 of casing 13 is sealed, described organic
The surface of glass cover-plate 7 is equidistantly provided with three a diameter of 50mm piping mouthful 9 along upstream to downstream and blocked with plug, piping mouthful
Provided with emery disc is held at 9, the emery disc that holds can collect the silt gushed out, water is filtered out, for judging grain diameter ratio, in institute
State and current meter 10 is installed at piping mouthful 9 and the water inlet pipe 5, facing when occurring to real-time monitored water velocity and piping
Boundary's speed.
The press perpendicular device 17 includes base 18 and the multistage hydraulic cylinder 19 being fixed on base 18, shown chamber
Body 13 is placed on the base 18, and the multistage hydraulic cylinder 19 is acted on to pressurize step by step on the lucite cover plate 7 to soil sample,
Every grade of pressurized control passes through the change of the available piping critical speed at various pressures of the flow velocity for adjusting water in 0.1~0.2kPa
Law.
The SCM Based intelligent head control system includes head lowering or hoisting gear 3, controls head lowering or hoisting gear 3
The delivery port of tank 4 is connected with the water inlet pipe 5 in motor 2 and the control cabinet of controlled motor 21, the head lowering or hoisting gear 3.
The microscopic observation device is imaged by multiplication factor for 10 times to 220 times of Olympus body microscope 11 and CCD
Machine 12 is constituted, and can continuously be automatically snapped or manually shot, and obtains the picture and image of local soil sample in process of the test, with
For rill evolution analysis, and it can analyze under different in flow rate, the changing rule of critical grain size.
Experimental rig implementation process of the present utility model is as follows：
Porous disc is fixed first, and soil sample accommodating chamber in chamber body stacks soil sample, it is appropriate compacting, smooth,
The nature of the soil body is reduced as far as possible, is then covered lucite cover plate, it is ensured that seamless between soil sample and lucite cover plate
Gap, piping mouthful thereon is blocked with plug, and water intaking valve and outlet valve are closed；By the zeroing of Olympus body microscope,
Ccd video camera and current meter are in running order；Opened during different seepage paths length experiments the piping mouthful of relevant position, start
Press perpendicular device, is pressurizeed to soil sample, and water tank is filled into water, connects single-chip microcomputer control cabinet power supply, opens water intaking valve, and adjust water
Flow velocity, water is flowed through water inlet pipe and enter intake chamber；Observation soil sample surface situation of change, and pass through micro- sem observation soil sample afterwards
The situation of change that surface particles are carefully seen, when piping occurs for soil sample, water carries fine sand and starts to convey to piping mouthful, observes flow velocity
The registration that instrument is fed back, when the soil body is totally stationary, the silt that emery disc is gushed out is held in collection, and water outlet is finally opened in as off-test
Valve.By calculating, data and related conclusions needed for can drawing.In each process of the test, start press perpendicular device to soil sample
The pressure of application can increase step by step, and then can study the change for applying piping critical speed under different size of pressure in soil sample
Rule.
In summary, the simulation test device of Study of The Underground architectural engineering Piping phenomenon of the present utility model disclosure satisfy that soil
The Piping phenomenon simulation of body is required.It can obtain the critical speed that piping occurs at different seepage paths length；Lower critical grain different in flow rate
The changing rule and piping grain diameter ratio in footpath；The change of soil body piping critical speed under different size of pressure at right angle
Rule；The changing rule of soil body microscopical structure in piping evolution.
Finally it should be noted that：Above example is only to illustrate the technical solution of the utility model, rather than its limitations；
Although the utility model is described in detail with reference to the foregoing embodiments, it will be understood by those within the art that：
It can still modify to the technical scheme described in previous embodiment, or to which part or all technical characteristic
Carry out equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from the utility model right and want
Seek limited range.
Claims (7)
1. a kind of simulation test device of Study of The Underground architectural engineering Piping phenomenon, it is characterised in that including：Test casing, give
Soil sample applies stressed press perpendicular device, SCM Based intelligent head control system and microscopic observation dress in chamber body
Put, experiment casing has water inlet pipe to be connected through water intaking valve with the SCM Based intelligent head control system on the left of upstream, under
There is outlet pipe on trip right side；Upstream end forms intake chamber and soil sample accommodating chamber provided with porous disc interval in the chamber body, described
The corresponding experiment casing front side wall of soil sample accommodating chamber is provided with the permeable hole of multiple regular arrays, and the experiment casing top is with having
Machine glass cover-plate is sealed, and the lucite lid surface is provided with multiple piping mouthful along upstream to downstream and blocked with plug,
Current meter is installed at the piping mouthful and the water inlet pipe.
2. the simulation test device of Study of The Underground architectural engineering Piping phenomenon according to claim 1, it is characterised in that：Institute
Stating SCM Based intelligent head control system includes head lowering or hoisting gear, the motor of control head lowering or hoisting gear and control electricity
The delivery port of tank is connected with the water inlet pipe in the control cabinet of machine, the head lowering or hoisting gear.
3. the simulation test device of Study of The Underground architectural engineering Piping phenomenon according to claim 1, it is characterised in that：Institute
Microscopic observation device is stated to be made up of for 10 times to 220 times of Olympus body microscope and ccd video camera multiplication factor.
4. the simulation test device of Study of The Underground architectural engineering Piping phenomenon according to claim 1, it is characterised in that：Institute
Stating press perpendicular device includes base and the multistage hydraulic cylinder being fixed on base, and shown experiment casing is placed on the base,
The multistage hydraulic cylinder is acted on to pressurize step by step on the lucite cover plate to soil sample, every grade of pressurized control 0.1~
0.2kPa。
5. the simulation test device of Study of The Underground architectural engineering Piping phenomenon according to claim 1, it is characterised in that：Institute
The lateral wall for stating experiment casing is poly (methyl methacrylate) plate.
6. the simulation test device of Study of The Underground architectural engineering Piping phenomenon according to claim 1, it is characterised in that：Institute
State piping mouthful equidistantly distributed.
7. the simulation test device of Study of The Underground architectural engineering Piping phenomenon according to claim 1, it is characterised in that：
It is provided with the piping mouthful and holds emery disc.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720159215.7U CN206489035U (en) | 2017-02-22 | 2017-02-22 | A kind of simulation test device of Study of The Underground architectural engineering Piping phenomenon |
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| CN201720159215.7U CN206489035U (en) | 2017-02-22 | 2017-02-22 | A kind of simulation test device of Study of The Underground architectural engineering Piping phenomenon |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN108593502A (en) * | 2018-05-07 | 2018-09-28 | 吉林建筑大学 | A kind of groundwater flow modeling device and monitoring method |
| CN108982324A (en) * | 2018-07-20 | 2018-12-11 | 河海大学 | It is a kind of to carry out under different compactness piping evaluation test device and test method in the soil body |
-
2017
- 2017-02-22 CN CN201720159215.7U patent/CN206489035U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN108593502A (en) * | 2018-05-07 | 2018-09-28 | 吉林建筑大学 | A kind of groundwater flow modeling device and monitoring method |
| CN108982324A (en) * | 2018-07-20 | 2018-12-11 | 河海大学 | It is a kind of to carry out under different compactness piping evaluation test device and test method in the soil body |
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