CN202256065U

CN202256065U - Geomembrane inflatable test device

Info

Publication number: CN202256065U
Application number: CN201120390922XU
Authority: CN
Inventors: 李志强; 李旺林; 李永顺
Original assignee: University of Jinan
Current assignee: University of Jinan
Priority date: 2011-10-14
Filing date: 2011-10-14
Publication date: 2012-05-30
Anticipated expiration: 2021-10-14

Abstract

The utility model relates to a geomembrane inflatable test device, belonging to the field of hydraulic engineering. The geomembrane inflatable test device comprises an on-membrane device container and an under-membrane device container communicated with the on-membrane device container, a membrane material to be test is arranged between the on-membrane device container and the under-membrane device container and separates a channel, an upper medium for simulating an on-membrane environment is stored in the on-membrane device container, a lower medium for simulating an under-membrane environment is fully filled in the under-membrane device container, a first pipe valve interface and a second pipe valve interface are arranged at the bottom of the on-membrane device container, the first pipe valve interface is communicated with a test system, and the second pipe valve interface is communicated with a testing water source feeder; a third pipe valve interface and a fourth pipe valve interface are arranged at the bottom of the under-membrane device container, the third pipe valve interface is communicated with the test system, and the fourth pipe valve interface is communicated with a drainage system; and an exhaust or drainage valve is arranged on a top cover. The geomembrane inflatable test device disclosed by the utility model can be used for conveniently carrying out membrane material inflatable destructive test, a membrane material air permeability test and seepage tests before and after the membrane material is broken through inflation.

Description

A kind of geomembrane inflatable test unit

Technical field

The utility model relates to a kind of level shop, hydraulic engineering field film seepage control project testing equipment, particularly a kind of geomembrane inflatable test unit of being used for.

Background technology

In order to solve the problem that the part plains region does not have regulating reservoir, China need build large quantities of Wall in Plain Reservoir engineering of regulating and storing.In Wall in Plain Reservoir was built, reservoir seepage-proofing was a key technical problem of building Wall in Plain Reservoir.In Wall in Plain Reservoir antiseepage design, Wall in Plain Reservoir relatively poor for geologic condition, that lack desirable aquiclude need be considered storehouse dish antiseepage scheme, i.e. reservoir bottom integrated horizontal leakage preventing.In the antiseepage of Ku Panpu film, consider economic factors, first-selected geomembrane anti-seepage.In the antiseepage of geomembrane storehouse dish, under the film in the unsaturated soil gas can cause that the film body inflatable destroys, cause reservoir to leak, influence the normal operation of reservoir.

Therefore carry out film body material inflatable failure test, the test of film body material gas penetration potential, and film body material inflatable destroys forward and backward permeability test and have important practical significance, also do not have such specialized equipment at present.

The utility model content

The purpose of the utility model provides a kind of geomembrane inflatable test unit; In the film seepage control project of hydraulic engineering field level shop; It can carry out film body material inflatable failure test, the test of film body material gas penetration potential, and film body material inflatable is destroyed forward and backward permeability test.

The utility model solves the technical scheme that its technical matters adopted: this kind geomembrane inflatable test unit; It is characterized in that; Comprise equipment container under the film of equipment container on the film of being with top cover and band base; Be connected between the two and the passage that connects is arranged; Die body material to be tested under equipment container on the film and the film between the equipment container and the passage between with the two separate; The last medium that has environment on the analogue membrane on the described film in the equipment container fills up the following medium of environment under the analogue membrane in the equipment container under the described film, the equipment container bottom is provided with first pipe valve interface that is connected with test macro and the second pipe valve interface that is communicated with test water source feedway on the described film; The equipment container bottom is provided with the 3rd pipe valve interface that is connected with test macro and the 4th pipe valve interface that is communicated with unwatering system under the described film; An exhaust or water discharging valve are installed in equipment container top cover middle part on the described film.

Described test water source feedway is a liftable water tank of voltage regulation, and it comprises liftable water tank, is arranged on water inlet control valve door and overflow vent on the water tank, is connected through flexible pipe between water tank and the second pipe valve interface.

The beneficial effect of the utility model is that this kind device can carry out film body material inflatable failure test, the test of film body material gas penetration potential easily, and film body material inflatable is destroyed forward and backward permeability test in the film seepage control project of shop, hydraulic engineering field; For hydraulic engineering antiseepage construction, guarantee is provided.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further specified.

Fig. 1 is the utility model vertical cross section synoptic diagram.

Among the figure, 1 film body material, equipment container on 2 films, 3 top covers, equipment container under 4 films; 5 bases, 6 water tank of voltage regulation, 7 first flanges, 8 second flanges; 9 first pipe valve interfaces, 10 second pipe valve interfaces, 11 the 3rd flanges, 12 the 3rd pipe valve interfaces; 13 flexible pipes, 14 overflow vents, 15 water inlet control valve doors, 16 the 4th pipe valve interfaces.

Embodiment

In Fig. 1, this kind geomembrane inflatable test unit comprises equipment container 4 under the film of equipment container on the film of being with top cover 32 and band base 5, is connected between the two and the passage that connects is arranged.

Equipment container 2 is made up of cylindrical tube shape container body, top cover 3 and annex thereof on the described film; Material is made up of steel, organic glass or other hard materials; This annex mainly refers to first flange 7 and second flange 8, be connected testing apparatus the first pipe valve interface 9, connect the second pipe valve interface 10 of test water source feedway etc.; First flange 7 and second flange 8 are welded in the two ends of the cylindrical tube shape container body of equipment container 2 on the film respectively admittedly; Top cover 3 links to each other with first flange 7, is used for the airtight container body or fills medium.Having the last medium of environment on the analogue membrane on the described film in the equipment container 2, is water for medium in the hydraulic engineering, the water body that simulation film body material top is born.

Described test water source feedway is a liftable water tank of voltage regulation 6, and it comprises liftable water tank, is arranged on water inlet control valve door 15 and overflow vent 14 on the water tank, is connected through flexible pipe 13 between water tank and the second pipe valve interface 10.Water tank is arranged on the jacking equipment, can rise as required or descend, and is used to the water source with stable head that provides test required.

Equipment container 4 is made up of cylindrical tube shape container, base 5 and annex thereof under the described film; Material is made up of steel, organic glass or other hard materials; This annex mainly refers to the 3rd flange 11, connect testing apparatus the 3rd pipe valve interface 12, connect the 4th pipe valve interface 16 of unwatering system etc.; Fill up the following medium of environment under the analogue membrane under the film in the equipment container, this time medium is soil, sandy gravel etc. in the hydraulic engineering, the simulation film body material bottom soil body.

Film body material 1 is tested the test specimen of required detection for inflatable; Between the 3rd flange 11 of equipment container under second flange 8 of equipment container on the film and the film; In the middle of each flange is poroid passage; Die body material 1 to be tested under equipment container on the film 2 and the film between the equipment container 4 and the passage between with the two separate, by securing member second flange 8 and the 3rd flange 11 are fastened together.

Described testing apparatus is an external; Link to each other with the 3rd pipe valve interface 12 through the first pipe valve interface 9; It is by piezometric tube, ventage piezometer, hole barometer, water yield measuring instrument, surveillance equipment; Compositions such as observation platform are used to obtain under the film or required test figure on the film, like the pore air pressure and the pore water pressure of inside soil body; Film body material top head, film body material bottom head, the water yield, and the camera monitoring system (comprising the underwater camera monitoring system) that is used for the observation experiment phenomenon.

Wall in Plain Reservoir inflatable test procedure:

One, film body material inflatable failure test, film body material gas penetration potential testing procedure

The first step: will test soil sample and pack under the film in the equipment container 4, dress soil height flushes with the 3rd flange 11;

Second step: film body material 1 is put on the 3rd flange 11, between film body material 1 and the 3rd flange 11, is provided with encapsulant;

The 3rd step: equipment container on the film 2 is lifted under the film on the equipment container 4, and second flange 8 of equipment container 2 is pressed under film body material 1 and the film on the equipment container, second flange 8, film body material 1 and the 3rd flange 11 are fixed together with bolt;

The 3rd step: the water tank 6 of water tank of voltage regulation on the film is fixed on suitably high position, and water tank is connected on the second pipe valve interface 10 with flexible pipe;

The 4th step: install into, unwatering system, water inlet pipe connects the water inlet control valve door 15 of water tank of voltage regulation on the film, run in the 4th pipe valve interface 16 of water system of rising pipe;

The 5th step: testing apparatus is linked to each other with this device with the 3rd pipe valve interface 12 through the first pipe valve interface 9;

The 6th step: arrange monitoring equipment, with record experimental phenomena and test figure;

The 7th step: through water inlet pipe water is sent in the water tank, the inflatable test observation begins, hydraulic pressure in the equipment container 2 on the recording film, and through monitoring equipment viewing test phenomenon, record testing experiment equipment; In process of the test, can the gas in the equipment container on the film 2 be discharged through exhaust or water discharging valve on the equipment container top cover 3 on the film.

The 8th step: continue to carry out the inflatable test, produce inflatable until film body material 1 and destroy; As inflatable destruction is not taken place, keep the certain hour test, off-test.

Two, film body material gas penetration potential testing procedure

The test of film body material gas penetration potential is with film body material inflatable failure test, and difference just adopts fixation pressure to carry out the inflatable test, does not destroy but inflatable does not take place.

Three, film body material inflatable is destroyed forward and backward permeability test step

Film body material inflatable is destroyed forward and backward permeability test and the difference of film body material inflatable failure test is: when carrying out permeability test; Open run in the 4th pipe valve interface 16 of water system of rising pipe; Form infiltration lane,, adopt fixedly head method or variable water level method with reference to the method for geotechnological seepage tests; Measure water percolating capacity, calculation permeability coefficient.

Claims

1. geomembrane inflatable test unit; It is characterized in that; Comprise equipment container under the film of equipment container on the film of being with top cover and band base; Be connected between the two and the passage that connects arranged, die body material to be tested under equipment container on the film and the film between the equipment container and the passage between with the two separate, have the last medium of environment on the analogue membrane on the described film in the equipment container; Fill up the following medium of environment under the analogue membrane under the described film in the equipment container, the equipment container bottom is provided with first pipe valve interface that is connected with test macro and the second pipe valve interface that is communicated with test water source feedway on the described film; The equipment container bottom is provided with the 3rd pipe valve interface that is connected with test macro and the 4th pipe valve interface that is communicated with unwatering system under the described film; An exhaust or water discharging valve are installed in equipment container top cover middle part on the described film.

2. geomembrane inflatable test unit according to claim 1; It is characterized in that; Described test water source feedway is a liftable water tank of voltage regulation; It comprises liftable water tank, is arranged on water inlet control valve door and overflow vent on the water tank, is connected through flexible pipe between water tank and the second pipe valve interface.