CN104807976B - A kind of device for the geotechnical model test that comes down - Google Patents

A kind of device for the geotechnical model test that comes down Download PDF

Info

Publication number
CN104807976B
CN104807976B CN201510237335.XA CN201510237335A CN104807976B CN 104807976 B CN104807976 B CN 104807976B CN 201510237335 A CN201510237335 A CN 201510237335A CN 104807976 B CN104807976 B CN 104807976B
Authority
CN
China
Prior art keywords
geotechnical
test
mouth
casing
flow generator
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201510237335.XA
Other languages
Chinese (zh)
Other versions
CN104807976A (en
Inventor
刘吉夫
邢颖
邓志飞
石瑶
高慧
郭兰兰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Beijing Normal University
Original Assignee
Beijing Normal University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Beijing Normal University filed Critical Beijing Normal University
Priority claimed from CN201610322721.3A external-priority patent/CN105738599B/en
Priority to CN201510237335.XA priority Critical patent/CN104807976B/en
Priority claimed from CN201610322714.3A external-priority patent/CN105738598B/en
Priority claimed from CN201610322701.6A external-priority patent/CN105784975B/en
Publication of CN104807976A publication Critical patent/CN104807976A/en
Publication of CN104807976B publication Critical patent/CN104807976B/en
Application granted granted Critical
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/24Earth materials

Abstract

The present invention proposes a kind of device for the geotechnical model test that comes down, it includes being arranged at the flow generator above geotechnical model slope, described flow generator is cone cylinder structure, it is provided with at least one tangential admission mouth below, it is provided above a gas outlet, described flow generator is connected with described model casing by a head rod and second connecting rod, described head rod top is provided with a mouth of calling prisoners in after letting them out for exercise being positioned at described model casing top, described second connecting rod top is provided with an air outlet being positioned at described model casing top, described mouth of calling prisoners in after letting them out for exercise is horn-like structure with described air outlet, described mouth of calling prisoners in after letting them out for exercise is connected with described tangential admission mouth by pipeline, described air outlet is connected with described gas outlet by pipeline.The device for the geotechnical model test that comes down proposed by the invention, its can at the externally-generated air-flow of geotechnical model, thus the impact on coming down of the extreme airflow condition such as typhoon, tornado can simulate in centrifugal model test.

Description

A kind of device for the geotechnical model test that comes down
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 research work to landslide mechanism, the method for use mainly can be attributed to: the inspection of the scene of a crime and test, field monitoring, theory analysis and numerical computations, and the method such as physical experiments.Complexity due to landslide mechanism so that adopt one of physical experiments important research means having become the generation of reproduction landslide.
Landslide physical model test belongs to geomechanical model test category, and its theory stems from structural model test.Slope model test is the experimental technique in geomechanical model test for this particular studies object that comes down, the experimental stage such as the architecture model test of its development experience, the test of bottom surface friction model, on-the-spot three-dimensional and full scale model test, hydraulic gradient model test, geotechnical centrifugal model test, geomechanical model test majority conventional both at home and abroad at present is architecture model test and two kinds of forms of centrifugal model test.
Centrifugal model test utilizes, due to it, the centrifugal force simulated gravity that geotechnical centrifuge high speed rotating produces, when Ng, enable to the stress of small size centrifugal model, strain is same or similar with prototype, therefore it is used widely in research on landslide, now in centrifugal model test, pass through vibration table, dewatering device simulation earthquake, the existing lot of documents of situation about raining has disclosed, such as, disclosed in Chinese patent CN204108697U a kind of rainer for geotechnical centrifugal model test, the disclosed rainfall simulation method for centrifugal model of CN104391103A and device thereof;But in centrifugal model test, how to simulate the extreme airflow condition such as typhoon, tornado, thus study its impact on landslide then also do not have correlational study.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of device for the geotechnical model test that comes down, to reduce or to avoid problem noted earlier.
For solving above-mentioned technical problem, the present invention proposes a kind of device for the geotechnical model test that comes down, it is arranged on the model casing placing geotechnical model, it includes being arranged at the flow generator above described geotechnical model slope, described flow generator is cone cylinder structure, it is provided with at least one tangential admission mouth below, it is provided above a gas outlet, described flow generator is connected with described model casing by a head rod and second connecting rod, described head rod top is provided with a mouth of calling prisoners in after letting them out for exercise being positioned at described model casing top, described second connecting rod top is provided with an air outlet being positioned at described model casing top, described mouth of calling prisoners in after letting them out for exercise is horn-like structure with described air outlet, described mouth of calling prisoners in after letting them out for exercise is connected with described tangential admission mouth by pipeline, described air outlet is connected with described gas outlet by pipeline.
Preferably, described gas outlet is provided with electromagnetic valve.
Preferably, mouth of calling prisoners in after letting them out for exercise described in is provided with electromagnetic valve.
Preferably, the distance on described tangential admission mouth and described flow generator base is not less than the 1/8 of the height of described flow generator.
Preferably, described tangential admission mouth and described flow generator base are the inclination angle of 3-8 degree with an angle.
Preferably, the distance of the tangent line in parallel of described tangential admission mouth and described flow generator inwall is 2-5mm.
A kind of device for the geotechnical model test that comes down proposed by the invention, its can at the externally-generated air-flow of geotechnical model, thus the impact on landslide of the extreme airflow condition such as typhoon, tornado can be simulated in centrifugal model test.
Accompanying drawing explanation
The following drawings is only intended to, in the present invention being schematically illustrated and explaining, not delimit the scope of the invention.Wherein,
Fig. 1 is shown that the structural representation of geotechnical centrifuge;
Fig. 2 is shown that the structural principle schematic diagram of a kind of device for the geotechnical model test that comes down of a specific embodiment according to the present invention;
The schematic cross-section of the tangential admission mouth of the flow generator that Fig. 3 is shown that in Fig. 2;
The cross-sectional view of the flow generator that Fig. 4 is shown that in Fig. 2.
Detailed description of the invention
In order to the technical characteristic of the present invention, purpose and effect are more clearly understood from, now comparison accompanying drawing illustrates the specific embodiment of the present invention.Wherein, identical parts adopt identical label.
The structural representation of the geotechnical centrifuge that Fig. 1 shows;Shown in Figure 1, in centrifugal model test, centrifugal model is generally arranged in a model casing, this model casing is placed in the hanging basket 1 of geotechnical centrifuge, when described geotechnical centrifuge high speed rotating, described hanging basket 1 will produce the centrifugal acceleration of Ng, at this moment, undersized centrifugal model can obtain and the same or analogous stress of prototype, strain, also just can realize the research on landslide to actual massif side slope.Under normal circumstances, when Study of Landslides, the centrifugal acceleration of geotechnical centrifuge can at more than 30g, even more than 50g.Therefore, having high velocity air outside model casing and produce, but the model casing owing to using in usual centrifugal model test is open type structure, therefore in model casing, the air-flow outside centrifugal model is relatively steady, the namely air-flow geo-stationary outside centrifugal model.
Fig. 2 is shown that the structural principle schematic diagram of a kind of device for the geotechnical model test that comes down of a specific embodiment according to the present invention;The schematic cross-section of the tangential admission mouth of the flow generator that Fig. 3 is shown that in Fig. 2;The cross-sectional view of the flow generator that Fig. 4 is shown that in Fig. 2.nullShown in Fig. 2-4,In order to the air-flow outside control centrifugal model,Thus typhoon can be simulated in centrifugal model test、The extreme air-flow such as tornado,The invention provides a kind of device for the geotechnical model test that comes down,It is arranged on the model casing 3 placing geotechnical model 2,It includes being arranged at the flow generator 41 above described geotechnical model 2 slope,Described flow generator 41 is cone cylinder structure,It is provided with at least one tangential admission mouth 4111 below,It is provided above a gas outlet 412,Described flow generator 41 is connected with described model casing 3 by a head rod 42 and second connecting rod 43,Described head rod 42 top is provided with a mouth 44 of calling prisoners in after letting them out for exercise being positioned at described model casing 3 top,Described second connecting rod 43 top is provided with an air outlet 45 being positioned at described model casing 3 top,Described mouth 44 of calling prisoners in after letting them out for exercise is horn-like structure with described air outlet 45,Described mouth 44 of calling prisoners in after letting them out for exercise is connected with described tangential admission mouth 4111 by pipeline,Described air outlet 45 is connected with described gas outlet 412 by pipeline.
In installation process, described model casing 3 top can arrange crossbeam, thus described first connection 42 and described second connecting rod 43 can be fixed, described head rod 42 is arranged in the described model casing 3 side, windward side at rotary course, and described second connecting rod 43 is arranged in the described model casing 3 lee face side at rotary course.
When geotechnical centrifuge high speed rotating, the air-flow of described tangential admission mouth 411 is entered into due to cross section reduction by described mouth 44 of calling prisoners in after letting them out for exercise, therefore flow velocity increases, thus after entering described flow generator 41 from described tangential admission mouth 411, cyclone gas field can be produced in described flow generator 41, also negative pressure will be formed outside described geotechnical model 2, thus tornado etc. can be simulated can produce the extreme airflow condition of negative pressure.The air-flow producing eddy flow and the air-flow being inhaled into described flow generator 41 can pass through described gas outlet 412 and discharge from described air outlet 45 via pipeline.From without the gas field environment in described model casing 3 is caused too much impact.
Shown in Figure 3, the distance d of the nearest tangent line in parallel of the passage of described tangential admission mouth 411 and described flow generator 41 inwall may be configured as 2-5mm, can ensure that the air-flow entered from described tangential admission mouth 411 can easily produce eddy flow, is easy to described tangential admission mouth 411 is processed on the other hand so on the one hand.
Shown in Figure 2, for the ease of the pressure that geotechnical model 2 is produced by calculated gas flow, described flow generator 41 to be parallel to described the domatic of geotechnical model 2 and be configured, that is, described flow generator 41 has an angle of inclination corresponding to the bottom of described model casing 3, in this case, in order to ensure that the cyclone gas field in described flow generator 41 to be collected to the top of described flow generator 41, shown in Figure 4, the distance H1 on described tangential admission mouth 411 and described flow generator 41 base however 1/8 of the height H less than described flow generator 41, and, the passage of described tangential admission mouth 411 and described flow generator 41 base α with an angle are the inclination angle of 3-8 degree.
Described tangential admission mouth 411 can arrange multiple, for instance, on its cross section, place, two or four can be symmetrical arranged along the center of circle.Produced by so can being guaranteed under various inlet flow condition, the center of cyclone gas field stablizes.
Shown in Figure 4, described gas outlet 412 is only used as the flow pass of vortex gas-flow, therefore it can be arranged on described flow generator 41 on the sidewall of top margin, certainly, it may also be arranged on the top margin of described flow generator 41, described gas outlet 412 place can arrange an electromagnetic valve, so, described gas outlet 412 can be closed by closing this electromagnetic valve, when described gas outlet 412 is closed, enter described flow generator 41 from tangential admission mouth 411 will be spilled over to described geotechnical model 2, thus typhoon etc. can be simulated can produce the extreme airflow condition of malleation.
Described mouth 44 of calling prisoners in after letting them out for exercise can arrange an electromagnetic valve (not shown), so can regulate intake in process of the test.
Can be measured by arranging baroceptor in described flow generator 41 and in described model casing by a kind of device for the geotechnical model test that comes down provided by the present invention produced stream pressure in centrifugal test.
A kind of device for the geotechnical model test that comes down proposed by the invention, its can at the externally-generated air-flow of geotechnical model, thus the impact on landslide of the extreme airflow condition such as typhoon, tornado can be simulated in centrifugal model test.
Although it will be appreciated by those skilled in the art that the present invention is described according to the mode of multiple embodiments, but not each embodiment only comprises an independent technical scheme.In description so narration be only used to clear for the purpose of; description should be made as a whole to be understood by those skilled in the art, and technical scheme involved in each embodiment being regarded as, the mode that can be mutually combined into different embodiment is to understand protection scope of the present invention.
The foregoing is only the schematic detailed description of the invention of the present invention, be not limited to the scope of the present invention.Any those skilled in the art, the equivalent variations made under without departing from the design of the present invention and the premise of principle, amendment and combination, the scope of protection of the invention all should be belonged to.

Claims (1)

1., for a device for the geotechnical model test that comes down, it is arranged on the model casing placing geotechnical model, it is characterised in that it includes being arranged at the flow generator above described geotechnical model slope;Described flow generator is cone cylinder structure, is provided with at least one tangential admission mouth below, is provided above a gas outlet;Described flow generator is connected with described model casing by a head rod and second connecting rod, described head rod top is provided with a mouth of calling prisoners in after letting them out for exercise being positioned at described model casing top, described second connecting rod top is provided with an air outlet being positioned at described model casing top, described mouth of calling prisoners in after letting them out for exercise is horn-like structure with described air outlet, described mouth of calling prisoners in after letting them out for exercise is connected with described tangential admission mouth by pipeline, described air outlet is connected with described gas outlet by pipeline, and described gas outlet is provided with electromagnetic valve.
CN201510237335.XA 2015-05-12 2015-05-12 A kind of device for the geotechnical model test that comes down Active CN104807976B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510237335.XA CN104807976B (en) 2015-05-12 2015-05-12 A kind of device for the geotechnical model test that comes down

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
CN201610322714.3A CN105738598B (en) 2015-05-12 2015-05-12 Slope model test device
CN201610322701.6A CN105784975B (en) 2015-05-12 2015-05-12 One kind landslide building model test apparatus
CN201610322721.3A CN105738599B (en) 2015-05-12 2015-05-12 One kind landslide experimental rig
CN201610322703.5A CN105954494B (en) 2015-05-12 2015-05-12 A kind of device for slope model test
CN201510237335.XA CN104807976B (en) 2015-05-12 2015-05-12 A kind of device for the geotechnical model test that comes down
CN201610322685.0A CN106018738B (en) 2015-05-12 2015-05-12 A kind of device for experiment of coming down

Related Child Applications (5)

Application Number Title Priority Date Filing Date
CN201610322701.6A Division CN105784975B (en) 2015-05-12 2015-05-12 One kind landslide building model test apparatus
CN201610322685.0A Division CN106018738B (en) 2015-05-12 2015-05-12 A kind of device for experiment of coming down
CN201610322714.3A Division CN105738598B (en) 2015-05-12 2015-05-12 Slope model test device
CN201610322703.5A Division CN105954494B (en) 2015-05-12 2015-05-12 A kind of device for slope model test
CN201610322721.3A Division CN105738599B (en) 2015-05-12 2015-05-12 One kind landslide experimental rig

Publications (2)

Publication Number Publication Date
CN104807976A CN104807976A (en) 2015-07-29
CN104807976B true CN104807976B (en) 2016-07-06

Family

ID=53692983

Family Applications (3)

Application Number Title Priority Date Filing Date
CN201610322703.5A Active CN105954494B (en) 2015-05-12 2015-05-12 A kind of device for slope model test
CN201510237335.XA Active CN104807976B (en) 2015-05-12 2015-05-12 A kind of device for the geotechnical model test that comes down
CN201610322685.0A Active CN106018738B (en) 2015-05-12 2015-05-12 A kind of device for experiment of coming down

Family Applications Before (1)

Application Number Title Priority Date Filing Date
CN201610322703.5A Active CN105954494B (en) 2015-05-12 2015-05-12 A kind of device for slope model test

Family Applications After (1)

Application Number Title Priority Date Filing Date
CN201610322685.0A Active CN106018738B (en) 2015-05-12 2015-05-12 A kind of device for experiment of coming down

Country Status (1)

Country Link
CN (3) CN105954494B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106768846B (en) * 2017-01-23 2019-01-11 成都理工大学 Clast flow field simulation experimental rig and clast flow model pilot system
CN106855567B (en) * 2017-01-23 2019-02-22 成都理工大学 Clast flow model test method
CN107228935B (en) * 2017-07-13 2019-11-15 中国地质大学(武汉) A kind of passive pile soil arching effect experimental rig based on seepage effect
CN108107184A (en) * 2017-11-16 2018-06-01 含山县进步阶梯环境科技有限公司 A kind of geotechnical centrifuge case for being used to simulate the rainfall with a variety of wind directions and wind speed

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000227386A (en) * 1999-02-04 2000-08-15 Mitsubishi Heavy Ind Ltd Basic shape mold of centrifugal acceleration field generation structure
CN102928572A (en) * 2012-10-26 2013-02-13 中国地质大学(武汉) Hydraulic-lifting self-weight loading device for landslide physical model test
CN203108697U (en) * 2013-03-12 2013-08-07 长安大学 Rainfall device for geotechnical centrifuge model test
CN103267651A (en) * 2013-05-07 2013-08-28 清华大学 High-gravity field wind generation device for giant maritime work centrifuge
CN103353516A (en) * 2013-05-27 2013-10-16 中国地质大学(武汉) Large movable lateral uplifting composite lading slope physical model test apparatus
CN203643442U (en) * 2013-12-27 2014-06-11 成都理工大学 Multifunctional rainfall landslide indoor testing device
CN203705435U (en) * 2013-11-14 2014-07-09 长安大学 Surface subsidence simulation test device
CN104502563A (en) * 2014-12-22 2015-04-08 泉州师范学院 Rainfall type landslide disaster simulation test system

Family Cites Families (9)

* Cited by examiner, † Cited by third party
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
CN201434865Y (en) * 2009-05-22 2010-03-31 宋志飞 Geotechnical engineering similar test system
CN102297834B (en) * 2011-05-27 2013-07-31 浙江大学 Dry-wet circulation climate hypergravity simulation system
CN102331489B (en) * 2011-07-19 2014-04-02 中国科学院力学研究所 System for testing physical model for large-scale landslides under action of multiple factors
CN103278612B (en) * 2013-04-26 2015-01-21 上海交通大学 Sand rain-type filling device for geotechnical engineering model test
CN103234733B (en) * 2013-05-07 2015-12-09 清华大学 Giant maritime work centrifugal machine
CN103308663B (en) * 2013-05-13 2016-02-24 西南交通大学 Geotechnical Engineering slope model test case
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
CN204556622U (en) * 2015-01-13 2015-08-12 中国计量学院 A kind of simulation of Rock And Soil catastrophe and pick-up unit

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000227386A (en) * 1999-02-04 2000-08-15 Mitsubishi Heavy Ind Ltd Basic shape mold of centrifugal acceleration field generation structure
CN102928572A (en) * 2012-10-26 2013-02-13 中国地质大学(武汉) Hydraulic-lifting self-weight loading device for landslide physical model test
CN203108697U (en) * 2013-03-12 2013-08-07 长安大学 Rainfall device for geotechnical centrifuge model test
CN103267651A (en) * 2013-05-07 2013-08-28 清华大学 High-gravity field wind generation device for giant maritime work centrifuge
CN103353516A (en) * 2013-05-27 2013-10-16 中国地质大学(武汉) Large movable lateral uplifting composite lading slope physical model test apparatus
CN203705435U (en) * 2013-11-14 2014-07-09 长安大学 Surface subsidence simulation test device
CN203643442U (en) * 2013-12-27 2014-06-11 成都理工大学 Multifunctional rainfall landslide indoor testing device
CN104502563A (en) * 2014-12-22 2015-04-08 泉州师范学院 Rainfall type landslide disaster simulation test system

Also Published As

Publication number Publication date
CN104807976A (en) 2015-07-29
CN106018738A (en) 2016-10-12
CN105954494A (en) 2016-09-21
CN105954494B (en) 2017-06-20
CN106018738B (en) 2017-06-20

Similar Documents

Publication Publication Date Title
Elkhoury et al. Experimental and numerical investigation of a three-dimensional vertical-axis wind turbine with variable-pitch
Falcão et al. Model-prototype similarity of oscillating-water-column wave energy converters
Lam et al. Study of wake characteristics of a vertical axis wind turbine by two-and three-dimensional computational fluid dynamics simulations
Wang et al. Fluid structure interaction modelling of horizontal-axis wind turbine blades based on CFD and FEA
Rezaeiha et al. On the accuracy of turbulence models for CFD simulations of vertical axis wind turbines
Maeda et al. Wind tunnel and numerical study of a straight-bladed vertical axis wind turbine in three-dimensional analysis (Part I: For predicting aerodynamic loads and performance)
Zahle et al. Wind turbine rotor‐tower interaction using an incompressible overset grid method
Martinez et al. A comparison of actuator disk and actuator line wind turbine models and best practices for their use
Vermeer et al. Wind turbine wake aerodynamics
Lei et al. Three-dimensional Improved Delayed Detached Eddy Simulation of a two-bladed vertical axis wind turbine
Balduzzi et al. Darrieus wind turbine blade unsteady aerodynamics: a three-dimensional Navier-Stokes CFD assessment
Sun et al. Laboratory-scale simulation of energy extraction from tidal currents
McLaren et al. Computational fluid dynamics simulation of the aerodynamics of a high solidity, small‐scale vertical axis wind turbine
Shaheen et al. Numerical study of two-bucket Savonius wind turbine cluster
Conde et al. Numerical study of the air-flow in an oscillating water column wave energy converter
Gupta et al. Computational fluid dynamics analysis of a twisted three-bladed H-Darrieus rotor
Song et al. Numerical analysis of forces exerted on particles in cyclone separators
Torresi et al. Accurate numerical simulation of a high solidity Wells turbine
Nobile et al. Dynamic stall for a vertical axis wind turbine in a two-dimensional study
Wahyudi et al. Optimization design of Savonius diffuser blade with moving deflector for hydrokınetıc cross flow turbıne rotor
Yue et al. Numerical simulation of the filtration process in fibrous filters using CFD-DEM method
Mallinson et al. Some characteristics of synthetic jets
Ghosh et al. Computational analysis of flow physics of a combined three bladed Darrieus Savonius wind rotor
Sick et al. Recent developments in the dynamic analysis of water turbines
Nicolle et al. CFD configurations for hydraulic turbine startup

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
EXSB Decision made by sipo to initiate substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant