CN106018109B - A kind of continual and steady adding pressure type geotechnique film liquid bulging deformation mechanical testing equipment - Google Patents
A kind of continual and steady adding pressure type geotechnique film liquid bulging deformation mechanical testing equipment Download PDFInfo
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- CN106018109B CN106018109B CN201610491455.7A CN201610491455A CN106018109B CN 106018109 B CN106018109 B CN 106018109B CN 201610491455 A CN201610491455 A CN 201610491455A CN 106018109 B CN106018109 B CN 106018109B
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- pressure
- bulging deformation
- film liquid
- geomembrane
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
- G01N3/12—Pressure testing
Abstract
A kind of testing equipment can be used in the plastic film mulch seepage control project of the fields such as water conservancy Wall in Plain Reservoir, municipal garbage landfill yard measuring geotechnological film liquid bulging deformation mechanical property, its main feature is that being able to carry out the geotechnological film liquid bulging deformation Experimental Study On Mechanical Properties of burden pressure, hydraulic pressure and geomembrane in container can be measured and burst pressure, overlying water pressure can be provided for geomembrane, and the crown height of laser displacement sensor automatic measurement geotechnique film liquid bulging deformation can be utilized, obtain geotechnological film liquid bulging deformation stress strain curve.The continual and steady adding pressure type geotechnique film liquid bulging deformation mechanical testing equipment by compression system, liquid is swollen sealing system, cover pressure device, four part of TT&C system is constituted.The device compression system has abandoned previous pump type hydraulic pressure supply mode, using a kind of continual and steady pressure supply device of autonomous Design.Liquid is swollen, and sealing system is mainly made of upper and lower ring flange and levels operation platform, forms hydraulic packing space.Pressure device is covered to be made of plexiglass cylinder and ring flange.TT&C system is made of precise digital display pressure sensor and laser displacement sensor.
Description
Technical field
The invention patent relates to one kind in the fields plastic film mulch seepage control projects such as water conservancy Wall in Plain Reservoir, municipal garbage landfill yard
The testing equipment for measuring liquid bulging deformation mechanical property, its main feature is that being able to carry out the geotechnological film liquid bulging deformation power of overlying water pressure
Property test is learned, hydraulic pressure and geomembrane in container can be measured and burst pressure, overlying water pressure can be provided for geomembrane,
And the crown height of laser displacement sensor automatic measurement geotechnique film liquid bulging deformation can be utilized, obtain geotechnological film liquid bulging deformation stress
Strain curve.
Background technique
To solve the problems, such as northern China part plains region without regulating reservoir, needs to build a large amount of Wall in Plain Reservoir and regulate and store
Engineering.In Wall in Plain Reservoir construction, reservoir seepage-proofing is key technical problem.In Wall in Plain Reservoir seepage prevention design, for geology item
Part is poor, the Wall in Plain Reservoir of the ideal impermeable stratum of shortage needs to consider library disk anti-seepage scheme, i.e. reservoir bottom integrally carries out level
Antiseepage.In the disk antiseepage of library, economic factor, preferred geomembrane horizontal leakage preventing scheme are considered.At reservoir filling initial stage, due to library water
Leakage, reservoir area level of ground water such as rise at many reasons, tend to make under film air accumulation in unsaturated soil, rise, and in soil
It is formed with body of calming the anger under work film, generates the swollen phenomenon of geotechnological film liquid or even liquid bursts bad, geomembrane will aggravate library once destroying
Water leakage, causes a large amount of water losses, and influence the normal operation of reservoir.
In the engineering that the fields such as municipal garbage landfill yard are laid with geomembrane horizontal leakage preventing, ask there is also similar liquid is swollen
Topic.
Therefore the test for the geotechnological film liquid bulging deformation mechanical property for having overlying water pressure is carried out, determines geotechnique's film liquid bulging deformation
Crown height, hydraulic pressure and geomembrane BURSTING STRENGTH in container, show that geotechnological film liquid bulging deformation stress-strain relation has
Important realistic meaning.
Summary of the invention
The object of the present invention is to provide a kind of continual and steady adding pressure type geotechnique film liquid bulging deformation mechanical testing equipment, this examinations
The geotechnological film liquid bulging deformation Experimental Study On Mechanical Properties that equipment is able to carry out overlying water pressure are tested, hydraulic pressure in container can be measured
Pressure is burst with geomembrane, overlying water pressure, and the crown of energy automatic measurement geotechnique's film liquid bulging deformation can be provided for geomembrane
Highly, geotechnological film liquid bulging deformation stress strain curve is obtained.
The technical solution adopted by the present invention to solve the technical problems is: the continual and steady adding pressure type geotechnique film liquid bulging deformation
Mechanical testing equipment by compression system, liquid is swollen sealing system, cover pressure device, four part of TT&C system is constituted.Compression system is one
The continual and steady pressure supply device of kind, and forcing frequency and rate of water injection can be adjusted.Liquid is swollen, and sealing system is primarily referred to as above and below
Ring flange and operating platform, upper and lower ring flange and levels operation platform form hydraulic packing container, are the examinations of geomembrane oxygen blast cyanidation
The basic platform tested.It covers pressure device to be made of plexiglass cylinder and steel flange disk, be posted on plexiglass cylinder vertical
Scale, for recording SEA LEVEL VARIATION, lower end links ring flange, can provide burden pressure for the swollen test of liquid.TT&C system is by precision
Digital display pressure sensor, scale, laser displacement sensor and high-definition video system composition, can automatic measurement and the geotechnological film liquid of record
Hydraulic pressure and geomembrane burst pressure in the crown height of bulging deformation, container.
The compression system is using continuing pressure supply device, by fluid cylinder, piston, screw rod, speed reducer, high-pressure rubber pipe, hydraulic
Quick connector and AC three-phase motor composition.Pressuring method utilizes motor band piston continuous pressure, liquid during guarantee test
The abundant and stable supplying of pressure, adjustable forcing frequency, and can reuse.
Sealing system that the liquid is swollen is primarily referred to as a set of ring flange group and operating platform.Ring flange group is by upper and lower flange
Disk composition forms hydraulic packing container with operating platform, is the basic platform of geomembrane oxygen blast cyanidation test.Upper flange plate is one
A annulus, function are to clamp (sealing) geotechnological membrane sample, have backspin screw thread mouth for fixing geomembrane, upper rotation with lower flange
Threaded hole is for covering pressure device composed by the fixed ring flange to link together with plexiglass cylinder.Lower flange is fixed on
On operating platform, upper surface is consistent with upper flange plate, and lower end surface the center point is drilled with for installing fluid pressure type quick connector subheader
Screw hole, for connecting compression system.There is the spherical oxygen blast cyanidation test of geomembrane ring-type constraint under the conditions of covering to need to use
The complete swollen sealing system of liquid and pressure device is covered, and constrains spherical oxygen blast cyanidation examination without geomembrane ring-type under the conditions of covering
It tests, then can only use the swollen sealing system of liquid.The allocation method of geomembrane is that threadingly hole axle is symmetrically placed in laxative remedy by geomembrane
On blue disk, then upper flange plate is placed on it and uses screw fit sealing.A whole set of flange disk device is stainless steel material, can be had
Imitating, which prevents from meeting aquatic rust, causes seal failure, is fixed on levels operation platform.
The pressure device that covers is made of plexiglass cylinder and steel flange disk, is posted on plexiglass cylinder vertical
Scale, for recording SEA LEVEL VARIATION, the ring flange of lower end connection.Water is added water into certain height into cylinder by water pipe using water pump
Degree is used to the practical receiving burden pressure in geomembrane scene in the disk seepage control project of quantitative simulation library.
The TT&C system is by precise digital display pressure sensor, scale, laser displacement sensor and high-definition video system
Composition.TT&C system is made using laser displacement sensor, precise digital display pressure sensor, scale and high-definition video system joint
Industry, can automatic measurement and record the crown height of geotechnological film liquid bulging deformation, hydraulic pressure and geomembrane burst pressure in container.
Geo-membrane material is the test specimen detected needed for liquid bulging deformation mechanical test, is located at lower flange and upper flange plate
Between, it is bolted, sealing is realized by the lute in card slot, constraint flange, geomembrane and operating platform are formed
Hydraulic packing container, and sealing space is formed in sealing container under film.
It, should the beneficial effects of the invention are as follows a kind of continual and steady adding pressure type geotechnique film liquid bulging deformation mechanical testing equipment is invented
Testing equipment is able to carry out the geotechnological film liquid bulging deformation Experimental Study On Mechanical Properties of burden pressure, can measure hydraulic pressure in container
Pressure, and the crown height of energy automatic measurement geotechnique's film liquid bulging deformation are burst with geomembrane, overlying water can be provided for geomembrane
Pressure obtains geotechnological film liquid bulging deformation stress strain curve.Wherein compression system system autonomous Design is a kind of continual and steady
Pressure supply device.In the previous swollen test apparatus of geotechnological film liquid, pump type hydraulic is used, and pump type hydraulic is there are natural period property,
Pressure supply is caused natural period property also occur, pressure supply is substantially periodical pressure supply；In addition to this, there is also pressure water reflux is existing for pump
As pressure water reflux and periodical pressure supply problem can bring difficulty to the consecutive variations of metering bulging height.And the present apparatus is thrown
Previous pump type hydraulic pressure supply mode is abandoned, a set of continual and steady pressure supply device of autonomous Design is first in the swollen test of geotechnological film liquid
Secondary use；Simultaneously and can be using the crown height of laser displacement sensor automatic measurement geotechnique film liquid bulging deformation, it can by calculating
Obtain stress strain curve when geotechnological film liquid bulging deformation.
Detailed description of the invention
The invention patent is further illustrated with embodiment with reference to the accompanying drawing.
Fig. 1 is that invention has the swollen principle of device schematic diagram of the geotechnological film liquid of burden pressure；
Fig. 2 is to invent continual and steady pressure supply device schematic illustration；
Fig. 3 is 1-1 sectional view for having the swollen device of geotechnological film liquid of burden pressure；
Fig. 4 is 2-2 sectional views for having the swollen device of geotechnological film liquid of burden pressure；
Fig. 5 is 3-3 sectional views for having the swollen device of geotechnological film liquid of burden pressure；
Fig. 6 is A-A sectional view of continual and steady pressure supply device.
Specific embodiment
In Fig. 1, the first step make operating platform (2), drilled out at the top of operating platform three circular apertures (7), (8) and
(9), it is respectively used to discharge outlet, connects the interface of compression system and to cover the waterpipe jointing that pressure device adds water.Second step according to
Test makes lower flange (3) with the bore of geomembrane (1), reserves installation bolt circular hole and encloses card slot (6) for the one of sealing,
And lower flange (3) is fixed on operating platform (2), it is bolted and with sealant that lower flange (3) is sealed around anti-
It only seeps water, then make the reserved installation bolt circular hole of upper flange plate (4) of same bore and encloses card slot (6) for the one of sealing, system
Make the ring flange (5) for covering pressure device with bore, reserves installation bolt circular hole.Pressure device is covered in third step, production, and production is posted vertical
To scale plexiglass cylinder (10) and connect with steel flange disk (5) composition and cover pressure device.4th step makes laser position
Displacement sensor frame (12).5th step makes control platform (15), installs control panel (16) and frequency modulator (17), and drill out 4
A circular hole (18), (19), (20) and (21) installs power supply indicator, master switch, compression system (14) control switch respectively and is
Covering pressure device adds the water pump (22) of water to switch.6th step makes compression system (14), in Fig. 2, according to experiment maximum soil used
The bore of work film (1) and the water consumption for highly calculating and once testing is burst, fluid cylinder (24) model is selected with this, guarantees its volume
Much larger than single water consumption, two circular apertures (30) and (31) are drilled out in fluid cylinder end, are respectively used to connection high-pressure rubber pipe
(23), and for installing hydraulic ga(u)ge hydraulic in measurement container；Two circular apertures (32) and (33) are drilled out in fluid cylinder side,
It is respectively used to be vented and add water；Piston (25) are selected according to the model of fluid cylinder (24)；According to the water injection rate per minute of requirement of experiment
With forcing frequency selection motor (26), speed reducer (27), gear, belt and screw rod (28)；Suitable limiter (29) are selected to protect
Demonstrate,prove the safety of instrument.All appts are successively installed according to shown in Fig. 2.7th step, when carrying out without pressure test is covered, first by rubber
Circle is put into the card slot (6) of lower flange (3), and geomembrane (1) is laid on lower flange (3), upper flange plate (4) is put
On geomembrane (1), it is connected with lower flange (3) and upper flange plate (4), forms sealing sky in sealing container under film
Between, then by hydrostatic sensor, limiter (29) and control platform (15) phase on the motor of compression system (26), fluid cylinder (24)
Even, the water supply hole (30) of compression system is connect with high-pressure rubber pipe (23) with the interface (8) of operating platform, finally by laser displacement
Sensor (13) is installed on laser displacement sensor frame (12), opens power supply, gives compression system fluid cylinder (24) topped up with water, is led to
Cross control panel (16) and frequency modulator (17)) pattern of pressure and forcing frequency are selected, laser displacement sensor (13) and computer connect
It connects, after whole is ready, opens compression system switch, Experimental Study On Mechanical Properties can be carried out；If covering pressure test on being had, also
Rubber ring need to be put into the card slot (6) of upper flange plate (4), plexiglass cylinder (10) is connect with steel flange disk (5)
Composition covers press fitting and is seated on upper flange plate (4), is connected with upper flange plate (4) and covers the ring flange (5) of pressure device, will
Water injection pipe (11) installation covering on pressure device waterpipe jointing (9) on the operational platform, by water pump (22) respectively with water pipe (11) and
Water appropriate is injected after control platform (15) connection in the plexiglass cylinder (10) for covering pressure device, it is all ready
Afterwards, compression system switch is opened, Experimental Study On Mechanical Properties can be carried out.
Claims (3)
1. a kind of continual and steady adding pressure type geotechnique film liquid bulging deformation mechanical testing equipment, the experimental rig is small in size, takes up an area
It is few, it is convenient and efficient, it is easy to carry, a variety of test sites are applicable to, practicability is stronger；It is characterized in that including compression system, liquid
Swollen sealing system covers pressure device, four part of TT&C system；The compression system is using lasting pressure supply device, including fluid cylinder, work
Plug, screw rod, speed reducer, high-pressure rubber pipe, hydraulic quick connector and AC three-phase motor, pressuring method are connected using motor band piston
Continuous pressurization, is adjusted forcing frequency and rate of water injection；Sealing system that the liquid is swollen is mainly by upper and lower ring flange and level
Operating platform composition is the basic platform of geomembrane oxygen blast cyanidation test；Described covers pressure device by plexiglass cylinder and method
Blue disk forms, and vertical scale, the ring flange of lower end connection are posted on plexiglass cylinder；The TT&C system is by precise digital display
Pressure sensor, scale, laser displacement sensor and high-definition video system composition；Wherein, laser displacement sensor is mounted on sharp
On the crossbeam on Optical displacement sensor frame top, frame is fixed on the operational platform, by laser displacement sensor and matches
Computer system, can measure and show the maximum bulge height of geomembrane.
2. a kind of continual and steady adding pressure type geotechnique film liquid bulging deformation mechanical testing equipment according to claim 1, special
Sign is that geomembrane is laid on lower flange, by lute in lower flange annular slot and upper flange plate to soil
Work film is sealed, and liquid sealing system is formed between geomembrane and operating platform.
3. a kind of continual and steady adding pressure type geotechnique film liquid bulging deformation mechanical testing equipment according to claim 1, special
Sign is to cover pressure device with a set of, covers pressure device and is made of plexiglass cylinder and steel flange disk, is led to water using water pump
It crosses water pipe and adds water to certain altitude into cylinder, bear to cover pressure for geomembrane scene is practical in the disk seepage control project of quantitative simulation library
Power.
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| CN201610491455.7A CN106018109B (en) | 2016-06-29 | 2016-06-29 | A kind of continual and steady adding pressure type geotechnique film liquid bulging deformation mechanical testing equipment |
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| CN201610491455.7A CN106018109B (en) | 2016-06-29 | 2016-06-29 | A kind of continual and steady adding pressure type geotechnique film liquid bulging deformation mechanical testing equipment |
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| CN106018109B true CN106018109B (en) | 2019-05-03 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107655760B (en) * | 2017-09-28 | 2020-04-03 | 水利部交通运输部国家能源局南京水利科学研究院 | Geomembrane bursting simulation test device and test method on particle cushion layer |
| CN111504794A (en) * | 2020-04-25 | 2020-08-07 | 天纺标(上海)检测科技有限公司 | Fabric bursting strength appearance |
| CN113804602A (en) * | 2021-08-30 | 2021-12-17 | 河海大学 | Geomembrane test method for on-site inflatable leakage and indoor stretching in under-mulch pressurization mode |
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| CN101504354A (en) * | 2009-03-18 | 2009-08-12 | 中国科学院武汉岩土力学研究所 | Impervious material permeation deformation test apparatus for refuse landfill pad |
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Inventor after: Li Wanglin Inventor after: Wei Ruchun Inventor after: Liu Zhanlei Inventor after: Xu Fang Inventor after: Zhang Bofan Inventor after: Tang Miao Inventor before: Wei Ruchun Inventor before: Li Wanglin Inventor before: Liu Zhanlei Inventor before: Xu Fang Inventor before: Zhang Bofan Inventor before: Tang Miao |
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