CN105784975B - One kind landslide building model test apparatus - Google Patents
One kind landslide building model test apparatus Download PDFInfo
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- CN105784975B CN105784975B CN201610322701.6A CN201610322701A CN105784975B CN 105784975 B CN105784975 B CN 105784975B CN 201610322701 A CN201610322701 A CN 201610322701A CN 105784975 B CN105784975 B CN 105784975B
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- model
- flow generator
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/24—Earth materials
Abstract
The present invention proposes a kind of landslide building model test apparatus, it includes being arranged at the flow generator above geotechnical model slope, the flow generator is cone cylinder structure, at least one tangential admission mouthful is provided with below, top is provided with a gas outlet, the flow generator is connected by a head rod and second connecting rod with the model casing, the head rod top is provided with a mouth of calling prisoners in after letting them out for exercise being located at the top of the model casing, the second connecting rod top is provided with an air outlet being located at the top of the model casing, the mouth of calling prisoners in after letting them out for exercise is horn-like structure with the air outlet, the mouth of calling prisoners in after letting them out for exercise is connected by pipeline with the tangential admission mouthful, the air outlet is connected by pipeline with the gas outlet.Device for the geotechnical model test that comes down proposed by the invention, it can produce air-flow outside geotechnical model, so as to influence of the extreme airflow condition such as typhoon, cyclone to coming down can be simulated in centrifugal model test.
Description
Technical field
The present invention relates to landslide physical technical field, particularly a kind of device for the geotechnical model test that comes down.
Background technology
In to the research work of landslide mechanism, the method for using can mainly be attributed to：The inspection of the scene of a crime and experiment, scene
The methods such as monitoring, theory analysis and numerical computations, and physical experiments.Due to the complexity of landslide mechanism so that
Turned into using physical experiments and reproduced one of important research means that landslide occurs.
Landslide physical model test belongs to geomechanical model test category, and its theory is derived from structural model test.It is sliding
Slope model test is the experimental technique for this particular studies object that comes down, its development experience in geomechanical model test
Architecture model experiment, the experiment of bottom surface friction model, three-dimensional scene and full scale model test, hydraulic gradient model experiment, Tu Gongli
The experimental stages such as heart model test, at present geomechanical model test majority conventional both at home and abroad be architecture model experiment and from
Two kinds of forms of heart model test.
Centrifugal model test utilizes the geotechnical centrifuge centrifugal force simulated gravity that rotation is produced at a high speed due to it, in Ng conditions
Under, enable to the stress of small size centrifugal model, strain same or similar with prototype, therefore obtained in research on landslide extensively
Using simulating earthquake, the existing lot of documents of rainy situation by shake table, dewatering device in centrifugal model test now and enter
Gone disclosure, such as a kind of rainer for geotechnical centrifugal model test disclosed in Chinese patent CN204108697U,
The disclosed rainfall simulation methods and its device for centrifugal model of CN104391103A；But how in centrifugal model test mould
Intend the extreme airflow condition such as typhoon, cyclone, so that study it does not have correlative study also then to the influence come down.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of landslide building model test apparatus, before being reduced or avoided
The problem being previously mentioned.
In order to solve the above technical problems, the present invention proposes a kind of landslide building model test apparatus, it is arranged at placement
On the model casing of geotechnical model, it includes being arranged at the flow generator above the geotechnical model slope, and the air-flow occurs
Device is cone cylinder structure, and at least one tangential admission mouthful is provided with below, and top is provided with a gas outlet, and the air-flow occurs
Device is connected by a head rod and second connecting rod with the model casing, and the head rod top is provided with
One mouth of calling prisoners in after letting them out for exercise being located at the top of the model casing, the second connecting rod top is provided with one and is located at model casing top
Air outlet, the mouth of calling prisoners in after letting them out for exercise is horn-like structure with the air outlet, and the mouth of calling prisoners in after letting them out for exercise tangentially is entered by pipeline with described
Gas port is connected, and the air outlet is connected by pipeline with the gas outlet.
Preferably, the gas outlet is provided with magnetic valve.
Preferably, the mouth of calling prisoners in after letting them out for exercise is provided with magnetic valve.
Preferably, the tangential admission mouthful is not less than the flow generator with the distance on the flow generator base
The 1/8 of height.
Preferably, the tangential admission mouthful is with an angle the inclination angle of 3-8 degree with the flow generator base.
Preferably, the tangential admission mouthful and the distance of the tangent line in parallel of the flow generator inwall are 2-
5mm。
A kind of device for the geotechnical model test that comes down proposed by the invention, it can produce gas outside geotechnical model
Stream, so as to influence of the extreme airflow condition such as typhoon, cyclone to coming down can be simulated in centrifugal model test.
Brief description of the drawings
The following drawings is only intended to, in schematic illustration and explanation is done to the present invention, not delimit the scope of the invention.Wherein,
Fig. 1 is shown the structural representation of geotechnical centrifuge；
Fig. 2 is shown a kind of device for the geotechnical model test that comes down of a specific embodiment of the invention
Principle schematic diagram.；
Fig. 3 is shown the schematic cross-section of the tangential admission mouthful of the flow generator in Fig. 2；
Fig. 4 is shown the cross-sectional view of the flow generator in Fig. 2.
Specific embodiment
In order to be more clearly understood to technical characteristic of the invention, purpose and effect, now control illustrates this hair
Bright specific embodiment.Wherein, identical part uses identical label.
The structural representation of the geotechnical centrifuge that Fig. 1 shows；It is shown in Figure 1, in centrifugal model test, centrifugal model
Be generally arranged in a model casing, the model casing is placed in the hanging basket 1 of geotechnical centrifuge, when the geotechnical centrifuge at a high speed
During rotation, the centrifugal acceleration of Ng will be produced in the hanging basket 1, at this moment, the centrifugal model of small size can be obtained and prototype
Same or analogous stress, strain, also can just realize the research on landslide to actual massif side slope.Under normal circumstances, in research
During landslide, the centrifugal acceleration of geotechnical centrifuge can be in more than 30g, even more than 50g.Therefore, height is had outside model casing
Fast air-flow is produced, but because the model casing used in usual centrifugal model test is open type structure, therefore in model casing,
Air-flow outside centrifugal model is relatively steady, that is, the air-flow geo-stationary outside centrifugal model.
Fig. 2 is shown a kind of device for the geotechnical model test that comes down of a specific embodiment of the invention
Principle schematic diagram.；Fig. 3 is shown the schematic cross-section of the tangential admission mouthful of the flow generator in Fig. 2；Fig. 4 shows
Be flow generator in Fig. 2 cross-sectional view.Referring to shown in Fig. 2-4, in order to control outside centrifugal model
Air-flow, so as to the extreme air-flow such as typhoon, cyclone can be simulated in centrifugal model test, the invention provides one kind for sliding
The device of slope geotechnical model test, it is arranged on the model casing 3 for placing geotechnical model 2, and it includes being arranged at the geotechnological mould
Flow generator 41 above the slope of type 2, the flow generator 41 is cone cylinder structure, at least one is provided with below tangential
Air inlet 4111, top is provided with a gas outlet 412, and the flow generator 41 passes through a head rod 42 and one
Second connecting rod 43 is connected with the model casing 3, and the top of the head rod 42 is provided with one and is pushed up positioned at the model casing 3
The mouth 44 of calling prisoners in after letting them out for exercise in portion, the top of second connecting rod 43 is provided with an air outlet 45 for being located at the top of the model casing 3, described
Mouth 44 of calling prisoners in after letting them out for exercise is horn-like structure with the air outlet 45, and the mouth 44 of calling prisoners in after letting them out for exercise is by pipeline and the tangential admission mouthful 4111
Connection, the air outlet 45 is connected by pipeline with the gas outlet 412.
In installation process, the settable crossbeam in the top of the model casing 3, so that can be to the described first connection 42 and described the
Two connecting rods 43 are fixed, and the head rod 42 is located at windward side side of the model casing 3 in rotary course, institute
State the second connecting rod 43 and be located at lee face side of the model casing 3 in rotary course.
When geotechnical centrifuge rotates at a high speed, the air-flow of the tangential admission mouthful 411 is entered into by the mouth 44 of calling prisoners in after letting them out for exercise
Because section reduces, therefore flow velocity increases, so that after the flow generator 41 is entered from the tangential admission mouthful 411, meeting
Cyclone gas are produced in the flow generator 41, also negative pressure will be formed outside the geotechnical model 2, so as to can simulate
Cyclone etc. can produce the extreme airflow condition of negative pressure.The air-flow for producing eddy flow and the gas for being inhaled into the flow generator 41
Stream can be discharged via pipeline by the gas outlet 412 from the air outlet 45.So that will not be to the gas in the model casing 3
Field environment causes excessive influence.
Shown in Figure 3, the passage of the tangential admission mouthful 411 is in parallel with the inwall of the flow generator 41
Nearest tangent line may be configured as 2-5mm apart from d, on the one hand can so ensure the air-flow entered from the tangential admission mouthful 411
Eddy flow can easily be produced, is on the other hand easy to be processed the tangential admission mouthful 411.
Shown in Figure 2, for the ease of the pressure that calculated gas flow is produced to geotechnical model 2, the flow generator 41 will
Domatic parallel to the geotechnical model 2 is configured, that is to say, that the flow generator 41 corresponds to the model casing 3
Bottom there is an angle of inclination, in this case, in order to ensure that cyclone gas in the flow generator 41 will be to
The top of the flow generator 41 is collected, shown in Figure 4, the tangential admission mouthful 411 and the bottom of the flow generator 41
The 1/8 of the height H apart from H1 otherwise less than the flow generator 41 on side, and, the passage of the tangential admission mouthful 411 with
α is the inclination angle of 3-8 degree to the base of the flow generator 41 with an angle.
The settable multiple of the tangential admission mouthful 411, for example, can on section where it along the center of circle be symmetrical arranged two or
Person four.The stabilization of the center of produced cyclone gas under various inlet flow condition can so be ensured.
Shown in Figure 4, the gas outlet 412 is only as the flow pass of vortex gas-flow, therefore it can be arranged on institute
Flow generator 41 is stated on the side wall of top margin, certainly, its top margin that may also be arranged on the flow generator 41, it is described go out
At gas port 412 can be set a magnetic valve, so, the gas outlet 412 can be closed by closing the magnetic valve, when it is described go out
When gas port 412 is closed, will be spilled on the geotechnical model 2 into the flow generator 41 from tangential admission mouthful 411, from
And can simulate typhoon etc. can produce the extreme airflow condition of malleation.
The mouth 44 of calling prisoners in after letting them out for exercise can be set a magnetic valve (not shown), and air intake can be so adjusted in process of the test
Amount.
By a kind of produced gas in centrifugal test of device for the geotechnical model test that comes down provided by the present invention
Flowing pressure can be measured by setting baroceptor in the flow generator 41 and in the model casing.
A kind of device for the geotechnical model test that comes down proposed by the invention, it can produce gas outside geotechnical model
Stream, so as to influence of the extreme airflow condition such as typhoon, cyclone to coming down can be simulated in centrifugal model test.
It will be appreciated by those skilled in the art that although the present invention is described according to the mode of multiple embodiments,
Be not each embodiment only comprising an independent technical scheme.For the sake of so narration is used for the purpose of understanding in specification,
Those skilled in the art should be understood specification as an entirety, and by technical scheme involved in each embodiment
Regard that can be mutually combined into the mode of different embodiments understands protection scope of the present invention as.
Schematical specific embodiment of the invention is the foregoing is only, the scope of the present invention is not limited to.It is any
Those skilled in the art, the equivalent variations made on the premise of design of the invention and principle is not departed from, modification and combination,
The scope of protection of the invention all should be belonged to.
Claims (1)
1. a kind of landslide building model test apparatus, it is arranged on the model casing for placing geotechnical model, it is characterised in that its bag
Include the flow generator being arranged above the geotechnical model slope；The flow generator is cone cylinder structure, is set below
There is at least one tangential admission mouthful, top is provided with a gas outlet；The flow generator by head rod and
One the second connecting rod is connected with the model casing, and the head rod top is provided with one and is located at model casing top
Mouth of calling prisoners in after letting them out for exercise, second connecting rod top is provided with an air outlet being located at the top of the model casing, it is described call prisoners in after letting them out for exercise mouth with
The air outlet is horn-like structure, and the mouth of calling prisoners in after letting them out for exercise is connected by pipeline with the tangential admission mouthful, and the air outlet leads to
Piping is connected with the gas outlet, and the gas outlet is provided with magnetic valve, the tangential admission mouthful and the flow generator
The distance on base is not less than the 1/8 of the height of the flow generator, the tangential admission mouthful and the flow generator base
It is with an angle the inclination angle of 3-8 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610322701.6A CN105784975B (en) | 2015-05-12 | 2015-05-12 | One kind landslide building model test apparatus |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610322701.6A CN105784975B (en) | 2015-05-12 | 2015-05-12 | One kind landslide building model test apparatus |
| CN201510237335.XA CN104807976B (en) | 2015-05-12 | 2015-05-12 | A kind of device for the geotechnical model test that comes down |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510237335.XA Division CN104807976B (en) | 2015-05-12 | 2015-05-12 | A kind of device for the geotechnical model test that comes down |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105784975A CN105784975A (en) | 2016-07-20 |
| CN105784975B true CN105784975B (en) | 2017-06-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610322701.6A Expired - Fee Related CN105784975B (en) | 2015-05-12 | 2015-05-12 | One kind landslide building model test apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111337646B (en) * | 2020-02-24 | 2021-10-08 | 同济大学 | Dam break type mudstone flow dynamics evolution overall process simulation test system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102297834A (en) * | 2011-05-27 | 2011-12-28 | 浙江大学 | Dry-wet circulation climate hypergravity simulation system |
| CN103234733A (en) * | 2013-05-07 | 2013-08-07 | 清华大学 | Giant maritime work centrifugal machine |
| CN103267651A (en) * | 2013-05-07 | 2013-08-28 | 清华大学 | High-gravity field wind generation device for giant maritime work centrifuge |
| CN203572758U (en) * | 2013-10-30 | 2014-04-30 | 西南交通大学 | Shear rheology device for researching gas trapping rheological property of long-runout landslides |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7412875B2 (en) * | 2004-12-08 | 2008-08-19 | Board Of Regents, The University Of Texas System | Centrifuge permeameter for unsaturated soils system |
-
2015
- 2015-05-12 CN CN201610322701.6A patent/CN105784975B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102297834A (en) * | 2011-05-27 | 2011-12-28 | 浙江大学 | Dry-wet circulation climate hypergravity simulation system |
| CN103234733A (en) * | 2013-05-07 | 2013-08-07 | 清华大学 | Giant maritime work centrifugal machine |
| CN103267651A (en) * | 2013-05-07 | 2013-08-28 | 清华大学 | High-gravity field wind generation device for giant maritime work centrifuge |
| CN203572758U (en) * | 2013-10-30 | 2014-04-30 | 西南交通大学 | Shear rheology device for researching gas trapping rheological property of long-runout landslides |
Non-Patent Citations (2)
| Title |
|---|
| 台风作用下植被对斜坡稳定性影;王照财 等;《自 然 灾 害 学 报》;20130803;第 22 卷(第 4 期);全文 * |
| 台风滑坡变形破坏机制模型试验研究;孔维伟 等;《工程地质学报》;20130415;全文 * |
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| CN105784975A (en) | 2016-07-20 |
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Granted publication date: 20170620 Termination date: 20210512 |