CN102507331B - Geomembrane gas inflation test device - Google Patents

Geomembrane gas inflation test device Download PDF

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Publication number
CN102507331B
CN102507331B CN 201110311437 CN201110311437A CN102507331B CN 102507331 B CN102507331 B CN 102507331B CN 201110311437 CN201110311437 CN 201110311437 CN 201110311437 A CN201110311437 A CN 201110311437A CN 102507331 B CN102507331 B CN 102507331B
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China
Prior art keywords
film
geomembrane
equipment container
test
pipe valve
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Expired - Fee Related
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CN 201110311437
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Chinese (zh)
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CN102507331A (en
Inventor
李志强
李旺林
李永顺
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University of Jinan
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University of Jinan
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Priority to CN 201110311437 priority Critical patent/CN102507331B/en
Publication of CN102507331A publication Critical patent/CN102507331A/en
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Publication of CN102507331B publication Critical patent/CN102507331B/en
Expired - Fee Related legal-status Critical Current
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Abstract

The invention discloses a geomembrane gas inflation test device, belonging to the field of hydraulic engineering. The geomembrane gas inflation test device comprises an on-geomembrane equipment container and a below-geomembrane equipment container communicated with the on-geomembrane equipment container, wherein a geomembrane body material to be tested is located between the on-geomembrane equipment container and the below-geomembrane equipment container and used for separating a channel, the on-geomembrane equipment container internally stores upper media for simulating an on-geomembrane environment, the below-geomembrane equipment container is filled with lower media for simulating a below-geomembrane environment, and the bottom of the on-geomembrane equipment container is provided with a first pipe valve interface communicated with a testing system and a second pipe valve interface communicated with a test water source supply device; the bottom of the below-geomembrane equipment container is provided with a third pipe valve interface communicated with the testing system and a fourth pipe valve interface communicated with a drainage system; and a top cover is provided with an air exhaust or water drainage valve. The geomembrane gas inflation test device can be used for conveniently carrying out a membrane material gas inflation destructive test, a membrane material air permeability test and penetration tests before and after membrane material gas inflation destruction.

Description

A kind of geomembrane gas inflation test device
Technical field
The present invention relates to a kind of for hydraulic engineering field horizontal plastic film mulch seepage control project testing equipment, particularly a kind of geomembrane gas inflation test device.
Background technology
In order to solve the part plains region without the problem of regulating reservoir, China need to build large quantities of Wall in Plain Reservoir engineering of regulating and storing.In Wall in Plain Reservoir was built, reservoir seepage-proofing was the key technical problem of building Wall in Plain Reservoir.In the Wall in Plain Reservoir seepage prevention design, Wall in Plain Reservoir relatively poor for geologic condition, that lack desirable aquiclude need to be considered storehouse dish anti-seepage scheme, i.e. reservoir bottom integrated horizontal leakage preventing.In the dish plastic film mulch antiseepage of storehouse, consider economic factors, first-selected geomembrane anti-seepage.In the dish antiseepage of geomembrane storehouse, under film in unsaturated soil gas can cause that the film body inflatable destroys, cause reservoir to leak, affect 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 there is no such specialized equipment at present.
Summary of the invention
The purpose of this invention is to provide a kind of geomembrane gas inflation test device, in the horizontal plastic film mulch seepage control project in hydraulic engineering field, 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 technical solution adopted for the present invention to solve the technical problems is: this kind geomembrane gas inflation test device, it is characterized in that, comprise with equipment container on the film of top cover with equipment container under the film of base, be connected both and the passage that connects is arranged, tested die body material is being separated between the equipment container and with the passage both under equipment container on film and film, there is the upper medium of environment on analogue membrane on described film in equipment container, fill up the lower medium of environment under analogue membrane under described film in the equipment container, the second pipe valve interface that on described film, equipment container bottom is provided with the first pipe valve interface of being connected with test macro and is communicated with test water source feedway, under 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, on described film, an exhaust or water discharging valve are installed in equipment container top cover middle part.
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 water tank, is connected by flexible pipe between water tank and the second pipe valve interface.
The invention has the beneficial effects as follows, this kind device can carry out easily 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 in the plastic film mulch seepage control project of hydraulic engineering field; For the hydraulic engineering Seepage, provide guarantee.
Description of drawings
The present invention is further described below in conjunction with drawings and embodiments.
Fig. 1 is vertical cross section schematic diagram of the present invention.
In 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 three-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 gas inflation test device comprises with equipment container on the film of top cover 32 with equipment container 4 under the film of base 5, is connected and the passage that connects is arranged between both.
On described film, equipment container 2 is comprised of cylindrical tube shape container body, top cover 3 and annex thereof, material is comprised of steel, organic glass or other hard materials, the the first pipe valve interface 9, joint test that this annex mainly refers to the first flange 7 and the second flange 8, connecting test equipment is with the second pipe valve interface 10 of water source feedway etc., the first flange 7 and the second flange 8 are welded in respectively the two ends of the cylindrical tube shape container body of equipment container 2 on film admittedly, top cover 3 is connected with the first flange 7, is used for airtight container body or filled media.Having the upper medium of environment on analogue membrane on described film in equipment container 2, is water for medium in hydraulic engineering, the water body that bear on simulation film body material top.
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 water tank, is connected by flexible pipe 13 between water tank and the second pipe valve interface 10.Water tank is arranged on jacking equipment, can rise as required or descend, and the water source with stable head that provides test required is provided.
Under described film, equipment container 4 is comprised of cylindrical tube shape container, base 5 and annex thereof, material is comprised of steel, organic glass or other hard materials, this annex mainly refers to the 3rd pipe valve interface 12 of three-flange 11, connecting test equipment, the 4th pipe valve interface 16 of connection unwatering system etc., fill up the lower medium of environment under analogue membrane under film in the equipment container, in hydraulic engineering, this time medium is soil, sandy gravel etc., the simulation film body material bottom soil body.
Film body material 1 is the test specimen of the required detection of inflatable test, between the three-flange 11 of equipment container under the second flange 8 of equipment container on film and film, be poroid passage in the middle of each flange, tested die body material 1 is fastened together the second flange 8 and three-flange 11 by securing member separating between equipment container 4 and with the passage both under equipment container on film 2 and film.
Described testing apparatus is external, be connected with the 3rd pipe valve interface 12 by the first pipe valve interface 9, it is by piezometric tube, ventage piezometer, hole barometer, water yield measuring instrument, surveillance equipment, the compositions such as observation platform, be used for to obtain under film or required test figure on film, pore air pressure and pore water pressure as 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 film in equipment container 4, dress soil height flushes with three-flange 11;
Second step: film body material 1 is put on three-flange 11, is provided with encapsulant between film body material 1 and three-flange 11;
The 3rd step: equipment container on film 2 is lifted under film on equipment container 4, and the second flange 8 of equipment container 2 is pressed under film body material 1 and film on the equipment container, with bolt, the second flange 8, film body material 1 and three-flange 11 are fixed together;
The 3rd step: the water tank 6 of water tank of voltage regulation on 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 the drainage system, water inlet pipe connects the water inlet control valve door 15 of water tank of voltage regulation on film, run in the 4th pipe valve interface 16 of water system of rising pipe;
The 5th step: testing apparatus is connected with this device with the 3rd pipe valve interface 12 by the first pipe valve interface 9;
The 6th step: arrange monitoring equipment, to record experimental phenomena and test figure;
The 7th step: by water inlet pipe, water is sent in water tank, the inflatable test observation begins, the interior hydraulic pressure of equipment container 2 on recording film, and by monitoring equipment viewing test phenomenon, record testing experiment equipment; Can the gas in equipment container on film 2 be discharged by the exhaust on equipment container top cover 3 on film or water discharging valve in process of the test.
The 8th step: continue to carry out the inflatable test, destroy until film body material 1 produces inflatable; Destroy as inflatable does not occur, 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 occur.
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, method with reference to geotechnological seepage tests, adopt fix-head method or variable water level method, measure water percolating capacity, calculation permeability coefficient.

Claims (2)

1. geomembrane gas inflation test device, it is characterized in that, comprise with equipment container on the film of top cover with equipment container under the film of base, be connected both and the passage that connects is arranged, tested die body material is being separated between the equipment container and with the passage both under equipment container on film and film, there is the upper medium of environment on analogue membrane on described film in equipment container, fill up the lower medium of environment under analogue membrane under described film in the equipment container, the second pipe valve interface that on described film, equipment container bottom is provided with the first pipe valve interface of being connected with test macro and is communicated with test water source feedway, under 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, on described film, an exhaust or water discharging valve are installed in equipment container top cover middle part.
2. geomembrane gas inflation test device 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 water tank, is connected by flexible pipe between water tank and the second pipe valve interface.
CN 201110311437 2011-10-14 2011-10-14 Geomembrane gas inflation test device Expired - Fee Related CN102507331B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201110311437 CN102507331B (en) 2011-10-14 2011-10-14 Geomembrane gas inflation test device

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Application Number Priority Date Filing Date Title
CN 201110311437 CN102507331B (en) 2011-10-14 2011-10-14 Geomembrane gas inflation test device

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CN102507331A CN102507331A (en) 2012-06-20
CN102507331B true CN102507331B (en) 2013-05-15

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Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103983553A (en) * 2014-05-29 2014-08-13 核工业北京地质研究院 Device capable of achieving automatic continuous water intaking for penetration test
CN105628502A (en) * 2014-11-05 2016-06-01 济南大学 Geomembrane gas inflation deformation mechanics test device
CN105588763A (en) * 2014-11-05 2016-05-18 济南大学 Geomembrane bloating deformation mechanical test device with electronic ruler for measuring distance
CN105588762A (en) * 2014-11-05 2016-05-18 济南大学 Geomembrane bloating deformation mechanical test apparatus with laser ranging
CN106018109B (en) * 2016-06-29 2019-05-03 济南大学 A kind of continual and steady adding pressure type geotechnique film liquid bulging deformation mechanical testing equipment
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
CN108918275B (en) * 2018-04-18 2019-02-26 河海大学 Simulate the experimental rig and method of high earth and rockfill dam water storage process geomembrane work condition
CN109781524B (en) * 2018-12-29 2020-02-18 河海大学 Method for prejudging local compressive damage of geomembrane during upper protective layer construction

Citations (5)

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Publication number Priority date Publication date Assignee Title
CN2779385Y (en) * 2004-05-14 2006-05-10 中国科学院上海应用物理研究所 Test unit for special-purpose filter membrane for membrane bioreactor
CN101566552A (en) * 2009-06-09 2009-10-28 西南交通大学 Anti-penetration performance testing device for waterproof membrane
CN101650286A (en) * 2009-08-26 2010-02-17 中冶集团武汉勘察研究院有限公司 Bedding coefficient testing method
CN101769849A (en) * 2009-01-05 2010-07-07 王利兵 Device for detecting transmissivity of organic matter through plastic film
CN202256065U (en) * 2011-10-14 2012-05-30 济南大学 Geomembrane inflatable test device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2779385Y (en) * 2004-05-14 2006-05-10 中国科学院上海应用物理研究所 Test unit for special-purpose filter membrane for membrane bioreactor
CN101769849A (en) * 2009-01-05 2010-07-07 王利兵 Device for detecting transmissivity of organic matter through plastic film
CN101566552A (en) * 2009-06-09 2009-10-28 西南交通大学 Anti-penetration performance testing device for waterproof membrane
CN101650286A (en) * 2009-08-26 2010-02-17 中冶集团武汉勘察研究院有限公司 Bedding coefficient testing method
CN202256065U (en) * 2011-10-14 2012-05-30 济南大学 Geomembrane inflatable test device

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