CN204389353U - A kind of temperature-seepage coupling test test specimen packoff - Google Patents

A kind of temperature-seepage coupling test test specimen packoff Download PDF

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Publication number
CN204389353U
CN204389353U CN201520064860.1U CN201520064860U CN204389353U CN 204389353 U CN204389353 U CN 204389353U CN 201520064860 U CN201520064860 U CN 201520064860U CN 204389353 U CN204389353 U CN 204389353U
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CN
China
Prior art keywords
hole platen
platen
drainage hole
thermoplastic tube
rock sample
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CN201520064860.1U
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Chinese (zh)
Inventor
王亚
赵延林
万文
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湖南科技大学
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Publication of CN204389353U publication Critical patent/CN204389353U/en

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Abstract

The utility model discloses a kind of temperature-seepage coupling test test specimen packoff, comprise water hole platen, drainage hole platen, thermoplastic tube, upper water hole platen is identical with drainage hole platen shape, upper water hole platen tips upside down on the top of rock sample, drainage hole platen is upwards supported on the bottom of rock sample, thermoplastic tube wraps up whole rock sample and upper water hole platen, drainage hole platen top, thermoplastic tube and upper water hole platen, the parcel region of drainage hole platen is tied with adhesive tape, adhesive tape outer cover has iron wire, thermoplastic tube outside surface is provided with axial displacement extensometer and hoop elasticity modulus.The utility model adopts thermoplastic tube to seal whole side leakage device, achieves the complete seal of test specimen, has stopped mutually being mixed into of pore water and silicone oil, ensure that the stability of confined pressure and osmotic pressure loading system.

Description

A kind of temperature-seepage coupling test test specimen packoff
Technical field
The utility model relates to geological technique field, relate to a kind of Wen Du ?seepage coupling test test specimen packoff.
Background technology
The engineering medium extensively run in the problems such as Jointed Rock Masses is hydraulic engineering, Communication and Transportation Engineering, mining engineering, oil exploitation, underground tunnel project, the buried engineering in nuke rubbish underground, national defence infrastructure engineering, different temperature, osmotic pressure difference, surrouding rock stress all have material impact to crack Lithosphere deformation and seepage characteristic, permeation fluid mechanics and the deformation behaviour thereof of crack rock is understood, for the design of various rock mass engineering project and construction thereof provide important foundation by the experiment of rock temperature-seepage flow-stress coupling effect.
Under engineering rock mass is generally in three-dimensional stress state, therefore, the distortion of study of rocks under triaxial compressions condition and seepage characteristic have more directive significance to Practical Project.Deformation behaviour under triaxial compressions condition is studied mainly through triaxial test.According to the stress state of test, triaxial test can be divided into two classes: ordinary triaxial test and true triaxial test.The stress state of ordinary triaxial test is σ 1> σ 23>0, namely rock sample is by axial compression and confined pressure effect, is also called normal triaxial test or false triaxial test.The stress state of true triaxial test is σ 1> σ 2> σ 3>0, namely rock sample is three anisobaric triaxial tests each other.Generally use ordinary triaxial test at present, but the defect of conventional apparatus: (1), due to ununified rock temperature-seepage flow-stress coupling Experiment on Function standard, is generally continued to use rock stress Experiment on Function standard at present and is sealed test specimen.Usual use thermoplastic tube parcel rock sample, then heats it with hot hair dryer, makes it to shrink laminating test specimen outside surface, and when mainly preventing rock failure, disintegrating slag is splashed in silicone oil, has certain sealing simultaneously.(2) conventional apparatus or be simple and crude or for loaded down with trivial details, operates very inconvenient and test data distortion, be not suitable for scale, stabilization production and use.(3) outstanding problem of traditional device is also, when testing for infiltration-stress coupling, the poorly sealed problem of thermoplastic tube just displays.When apply comparatively hyperosmosis time, current all overflow from the upper surface of contact of upper water hole platen and test specimen, are directly mixed in silicone oil, cause the waste of confined pressure pressure unstability, osmotic pressure distortion and silicone oil.Due to huge permeable pressure head, make the sideshake of the very easily through thermoplastic tube of current and test specimen, form water-flowing path, cause rock seepage flow illusion; Water-flowing path squeezes the thermoplastic tube that rises, the Mineral rheology hoop displacement distortion that in data acquisition system (DAS), hoop elasticity modulus obtains.Therefore, existing rock stress Experiment on Function test specimen seal standard is unsuitable for the seepage characteristic of study of rocks temperature-seepage flow-stress coupling Experiment on Function rock.(4) in addition, numerous at present experiments does not all relate to the research of rock sample packoff and method under condition of different temperatures.Rock shows different mechanical properties of rock at different temperatures, and rock seepage flow will present different seepage characteristics at different temperatures, therefore study of rocks seepage tests consider that the impact of temperature is also a crucial technology.
Utility model content
In order to solve the problems of the technologies described above, the utility model provides that a kind of structure is simple, the Wen Du of good airproof performance ?seepage coupling test test specimen packoff.
The technical scheme that the utility model solves the problem is: a kind of Wen Du ?seepage coupling test test specimen packoff, comprise water hole platen, drainage hole platen, thermoplastic tube, upper water hole platen is identical with drainage hole platen shape, the inside of upper water hole platen and drainage hole platen is hollow, bottom is the plane of a sealing, top is tubular part and top is provided with opening, upper water hole platen is provided with inlet opening, drainage hole platen is provided with apopore, upper water hole platen bottom-up, open top tips upside down on the top of rock sample downwards, the bottom of drainage hole platen is downward, open top is upwards supported on the bottom of rock sample, thermoplastic tube wraps up whole rock sample and upper water hole platen, the tubular part at drainage hole platen top, thermoplastic tube and upper water hole platen, the parcel region, top of drainage hole platen is tied with adhesive tape, adhesive tape outer cover has iron wire, the outer thermoplastic tube outside surface of rock sample central region is vertically provided with axial displacement extensometer, be horizontally arranged with hoop elasticity modulus.
Shang state Wen Du ?in seepage coupling test test specimen packoff, described rock sample is cylindrical, and its cross-sectional sizes is identical with the top cross-section size of drainage hole platen with upper water hole platen.
Shang state Wen Du ?in seepage coupling test test specimen packoff, the tubular part of described thermoplastic tube and upper water hole platen, the tubular part of drainage hole platen, rock sample contact position are all filled with glue.
Shang state Wen Du ?in seepage coupling test test specimen packoff, described glue comprises epoxy adhesive and hardening agent, and the mass ratio of epoxy adhesive and hardening agent is 3: 2.
The beneficial effects of the utility model are:
1. the utility model adopts thermoplastic tube to seal whole side leakage device, achieves the complete seal of test specimen, has stopped mutually being mixed into of pore water and silicone oil, ensure that the stability of confined pressure and osmotic pressure loading system;
2. the utility model is filled with glue between thermoplastic tube and rock sample, avoids current and forms seepage flow path from the space thermoplastic tube and test specimen, and then affects the mensuration of the collection of test specimen hoop thermomechanical processing and infiltration coefficient, ensure that the authenticity of test figure;
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the schematic cross-section of rock sample lapping.
Fig. 3 is the schematic diagram of device on testing machine.
Fig. 4 is permeable pressure head and time diagram when carrying out triaxial test 20 DEG C before adopting the utility model.
Fig. 5 is permeable pressure head and time diagram when carrying out triaxial test 20 DEG C after adopting the utility model.
Fig. 6 is permeable pressure head and time diagram when carrying out triaxial test 40 DEG C after adopting the utility model.
Fig. 7 is permeable pressure head and time diagram when carrying out triaxial test 60 DEG C after adopting the utility model.
In figure, 1. go up water hole platen, 2. drainage hole platen, 3. inlet opening, 4. apopore, 5. rock sample, 6.AB glue, 7. thermoplastic tube, 8. adhesive tape, 9. iron wire, 10. axial displacement extensometer, 11. hoop elasticity modulus, 12. base latches, 13. bases, 14. top latches, 15. fixed discs, 16. annular-heating circles, 17. temperature sensors, 18. oil-outs, 19. oil-ins.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further described.
As Fig. 1, shown in Fig. 2, the utility model comprises water hole platen 1 and drainage hole platen 2, upper water hole platen 1 is identical with the shape of drainage hole platen 2, the bottom of upper water hole platen 1 and drainage hole platen 2 is the plane of a sealing and bottom centre is provided with pin hole, upper water hole platen 1 and drainage hole platen 2 inside are hollow, top is columniform tubular part and top is provided with opening, upper water hole platen 1 is provided with inlet opening 3, outside water inlet pipe is connected by inlet opening 3, water is poured into upper water hole platen 1 inner, drainage hole platen 2 is provided with apopore 4, outside water pipe is connected by apopore 4, water in drainage hole platen 2 is discharged, upper water hole platen 1 bottom-up, open top tips upside down on the top of rock sample 5 downwards, the bottom of drainage hole platen 2 is downward, open top is upwards supported on the bottom of rock sample 5, rock sample 5 is cylindrical, cross-sectional sizes is identical with the open top size of drainage hole platen 2 with upper water hole platen 1.Whole rock sample 5 and upper water hole platen 1, the tubular part of drainage hole platen 2 is wrapped up by thermoplastic tube 7, thermoplastic tube 7 and upper water hole platen 1, drainage hole platen 2 tubular part contact position is filled with glue, glue is filled with between thermoplastic tube 7 and rock sample 5, at thermoplastic tube 7 and upper water hole platen 1, the parcel region, top of drainage hole platen 2 is tied with adhesive tape 8, adhesive tape 8 outer cover has iron wire 9, by being wound around adhesive tape 8 and tightening iron wire 9 by fastening for thermoplastic tube 7, in thermoplastic tube 7 appearance of rock sample 5 central region, axial displacement extensometer 10 is vertically set, horizontally set hoop elasticity modulus 11.
Rotating base, fixed disc and two support bars, the middle part of described rotating base is provided with base latch, the middle part of fixed disc is provided with top latch, the bottom center of described upper water hole platen and drainage hole platen is provided with pin hole, the end pin hole of drainage hole platen is aimed at base latch and is arranged in rotating base, the end pin hole alignment of top latch of upper water hole platen is arranged in fixed disc, two described support bars are symmetrically distributed in the both sides of rotating base, the bottom of support bar is fixed on rotating base, and the top of support bar is fixed on fixed disc.
The utility model adopts AB glue 6 to bond rock sample 5 and thermoplastic tube 7, with adhesive tape 8 and the fastening sealing realizing test specimen of iron wire 9.The abbreviation of AB glue and epoxy adhesive and hardening agent, because epoxy resin contains various polarity group and active very large epoxy radicals, energy and rock, the multiple materials such as plastics form very strong cohesive force, and consolidation strength is high.After epoxy resin adds filler, volumetric shrinkage is below 0.2%, and the linear expansion coefficient of curable epoxide thing is also very little.The good stability of the dimension of glue-line.Epoxy adhesive and hardening agent quality in 3: 2 ratio deployed after, curing system that is high temperature resistant, good toughness can be mixed with, be most suitable for the temperature-seepage flow-stress coupling Experiment on Function under different temperatures.Rock sample 5 can select diameter 50mm, and length is the cylindrical maokou limestone of 100mm
Installation steps of the present utility model are: as shown in Figure 1, by rock sample 5 outside surface uniform application AB glue 6; The tubular top of water hole platen 1 and drainage hole platen 2 is wound around respectively with white tape 8; The pin hole of drainage hole platen 2 is aimed at base latch 12 to be arranged in base 13; Open top rock sample 5 being placed in drainage hole platen 2 puts thermoplastic tube 7; The open top of upper water hole platen 1 is also inserted in thermoplastic tube 7; Alignment of top latch 14 puts fixed disc 15; Rotating base 13, with hair-dryer warming thermal plastic pipe 7, makes it heat shrink, perfect laminating rock sample 5; Thermoplastic tube 7 external application white tape 8 being wound around, tightening with iron wire 9, sealing further; Installation shaft is to elasticity modulus 10 and hoop elasticity modulus 11.
After being installed by said apparatus, after AB gelling in 12 hours knot, both hands are held drainage hole platen 2 and are put into testing machine, and as shown in Figure 3, testing machine is provided with oil-out 18 and oil-in 19, and in inlet opening 3, apopore 4 is installed into water pipe and rising pipe respectively; Three axocoels are slowly put down, forms airtight lab space; In three axocoels, inject silicone oil, by oil pump, predetermined Even round pressure is applied to rock sample 5; Rear pump or output pump by seat move cylinder apply axle pressure; Different seepage pressure is applied to upper water hole platen 1, drainage hole platen 2, makes rock sample 5 upper and lower interface form osmotic pressure difference, thus carry out seepage flow; By the annular-heating circle 16 of three outside three axocoels, and by temperature sensor 17 Real-Time Monitoring temperature in three axocoels, reach predetermined experimental temperature; Finally by the data of the axial displacement extensometer 10 in data acquisition system (DAS), hoop elasticity modulus 11 and temperature sensor 17, realize the Real-time Collection of the radial displacement to rock, hoop deformation, these data of osmotic pressure difference.
Fig. 4 is the seepage pressure difference and the time diagram that do not adopt AB glue bond at 20 DEG C between thermoplastic tube and rock sample, and owing to not using AB glue bond test specimen and thermoplastic tube, sideshake is very easily through; From figure, we can find out that rock Seepage flow time was less than 2 minutes, and osmotic pressure difference (Detta Pressure) decline rate is exceedingly fast, and infer that current form path from sideshake thus, cause seepage flow illusion;
Fig. 5 is the seepage pressure difference and the time diagram that adopt AB glue bond thermoplastic tube and rock sample at 20 DEG C, after adopting AB glue bond test specimen thermoplastic tube, sideshake path is by thorough shutoff, current can only from the inner seepage flow of rock sample, and percolation flow velocity is slower, meet engineering reality, macroscopically show as Seepage flow time and reach 3 hours, prove this Wen Du ?seepage coupling test test specimen packoff and method effective.
Fig. 6 is the seepage pressure difference and the time diagram that adopt AB glue bond thermoplastic tube and rock sample at 40 DEG C, after adopting AB glue bond test specimen thermoplastic tube, sideshake path is by thorough shutoff, current can only from the inner seepage flow of rock sample, and percolation flow velocity is slower, meet engineering reality, macroscopically show as Seepage flow time and reach 3 hours, prove this Wen Du ?seepage coupling test test specimen packoff and method effective at 40 DEG C.
Fig. 7 is the seepage pressure difference and the time diagram that adopt AB glue bond thermoplastic tube and rock sample at 60 DEG C, after adopting AB glue bond test specimen thermoplastic tube, sideshake path is by thorough shutoff, current can only from the inner seepage flow of rock sample, and percolation flow velocity is slower, meet engineering reality, macroscopically show as Seepage flow time and reach about 200 minutes, prove this Wen Du ?seepage coupling test test specimen packoff and method still effective at 60 DEG C.

Claims (4)

1. temperature-seepage coupling test test specimen packoff, it is characterized in that: comprise water hole platen, drainage hole platen, thermoplastic tube, upper water hole platen is identical with drainage hole platen shape, the inside of upper water hole platen and drainage hole platen is hollow, bottom is the plane of a sealing, top is tubular part and top is provided with opening, upper water hole platen is provided with inlet opening, drainage hole platen is provided with apopore, upper water hole platen bottom-up, open top tips upside down on the top of rock sample downwards, the bottom of drainage hole platen is downward, open top is upwards supported on the bottom of rock sample, described thermoplastic tube wraps up whole rock sample and upper water hole platen, the tubular part at drainage hole platen top, thermoplastic tube and upper water hole platen, the parcel region, top of drainage hole platen is tied with adhesive tape, adhesive tape outer cover has iron wire, the thermoplastic tube outside surface of rock sample central region is vertically provided with axial displacement extensometer, be horizontally arranged with hoop elasticity modulus.
2. temperature-seepage coupling test test specimen packoff as claimed in claim 1, it is characterized in that: described rock sample is cylindrical, its cross-sectional sizes is identical with the top cross-section size of drainage hole platen with upper water hole platen.
3. temperature-seepage coupling test test specimen packoff as claimed in claim 2, is characterized in that: the tubular part of described thermoplastic tube and upper water hole platen, the tubular part of drainage hole platen, rock sample contact position are all filled with glue.
4. temperature-seepage coupling test test specimen packoff as claimed in claim 3, it is characterized in that: described glue comprises epoxy adhesive and hardening agent, the mass ratio of epoxy adhesive and hardening agent is 3: 2.
CN201520064860.1U 2015-01-30 2015-01-30 A kind of temperature-seepage coupling test test specimen packoff CN204389353U (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105092385A (en) * 2015-08-06 2015-11-25 山东科技大学 High-pressure water sealing device for rock sample and use method
CN105388098A (en) * 2015-12-20 2016-03-09 湖南科技大学 Rock fracture preparation and seepage device and seepage characteristic test method
CN105891082A (en) * 2015-12-19 2016-08-24 湖南科技大学 Rock permeability coefficient detection device and method
CN105928859A (en) * 2016-07-08 2016-09-07 中国地质大学(武汉) Device and method for testing rock fracture seepage parameters under high temperature and high pressure conditions
CN108693047A (en) * 2018-03-29 2018-10-23 大连理工大学 A kind of sealing device of rock fracture shearing Seepage Experiment
CN110387204A (en) * 2019-07-10 2019-10-29 中国地质大学(武汉) The high hole rock Seepage Experiment sealant of nanoscale

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105092385A (en) * 2015-08-06 2015-11-25 山东科技大学 High-pressure water sealing device for rock sample and use method
CN105092385B (en) * 2015-08-06 2018-01-26 山东科技大学 A kind of rock sample high-pressure water seal device and application method
CN105891082B (en) * 2015-12-19 2019-07-26 湖南科技大学 A kind of rock permeability coefficient detection device and method
CN105891082A (en) * 2015-12-19 2016-08-24 湖南科技大学 Rock permeability coefficient detection device and method
CN105388098B (en) * 2015-12-20 2018-01-02 湖南科技大学 A kind of test method produced with seepage apparatus and seepage characteristic of rock fracture
CN105388098A (en) * 2015-12-20 2016-03-09 湖南科技大学 Rock fracture preparation and seepage device and seepage characteristic test method
CN105928859A (en) * 2016-07-08 2016-09-07 中国地质大学(武汉) Device and method for testing rock fracture seepage parameters under high temperature and high pressure conditions
CN108693047A (en) * 2018-03-29 2018-10-23 大连理工大学 A kind of sealing device of rock fracture shearing Seepage Experiment
CN110387204A (en) * 2019-07-10 2019-10-29 中国地质大学(武汉) The high hole rock Seepage Experiment sealant of nanoscale

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Granted publication date: 20150610

Termination date: 20180130