CN104007013A - Test device for chemical solution seepage in rock single fracture at different temperatures - Google Patents

Test device for chemical solution seepage in rock single fracture at different temperatures Download PDF

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Publication number
CN104007013A
CN104007013A CN201310137965.0A CN201310137965A CN104007013A CN 104007013 A CN104007013 A CN 104007013A CN 201310137965 A CN201310137965 A CN 201310137965A CN 104007013 A CN104007013 A CN 104007013A
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China
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chemical solution
test
rock
specimen
fracture
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CN201310137965.0A
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Chinese (zh)
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CN104007013B (en
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赵延林
万文
王卫军
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湖南科技大学
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Abstract

The invention relates to a test device for chemical solution seepage in rock single fracture at different temperatures. The test device comprises a sample apparatus system, an axial compression system, a confining pressure system, a chemical solution pressure loading system, a servo control system and a data acquisition system. The sample apparatus system comprises a sample, a cylindrical heat-shrinkable tube and a cylindrical rigid spacer block; one end of the rigid spacer block is provided with a permeation hole, a circular permeation groove and a radial permeation groove; the chemical solution pressure loading system is provided with a heating device; the heating device comprises a heater and a temperature sensor; the heater is disposed on a solution pipe at one side of the sample apparatus system; and the solution pipe between the heater and the sample apparatus system is provided with the temperature sensor. To increase test precision, the wall of the solution pipe between the heater and the sample apparatus system is provided with a heat insulation material; and a ceramic heater is employed.

Description

Chemical solution seepage flow test device under rock Single Fracture different temperatures
Technical field
The present invention relates to chemical solution seepage flow test device under a kind of rock Single Fracture different temperatures, chemical corrosion-stress coupling effect that this equipment occurs while being suitable for studying different temperatures chemical solution infiltrate rock Single Fracture.
Background technology
Rock cranny is being dominated the migratory direction of underground water conventionally, is the main study subject of seepage field.Meanwhile, owing to being controlled by the surface reaction mechanism of mineral dissolution, the water rock chemical action contact free face that joint fissure forms is also the main generation place of geochemical reaction.Therefore, the existence of rock cranny has greatly affected balance and the migration of underground water in seepage field and the carrying out of geochemical reaction of subterranean body mechanics field.Diversity in view of fissure-plane tax dis environment, has important basic meaning to the research of fissure-plane mechanism of Evolution under many couplings.
There are some researches show, mechanical function can make fissure-plane produce densification or slippage, causes thus infiltrative variation.Meanwhile, chemical reaction can make fracture surface material occur to dissolve or precipitation, will cause the change of seepage channel.And when external force and seepage flow act on fissure-plane simultaneously, the variation of its penetration property is subject to mechanical function and chemical reaction co-controlling.Because the chemical corrosion of water rock and temperature have extremely close relation, the intensity of the chemical corrosion that the chemical solution of different temperatures occurs by rock fracture is different.The test unit that also there is no at present rock fracture chemical corrosion under different confined pressures, different temperatures chemical solution, crack distortion.
Summary of the invention
The object of the present invention is to provide chemical solution seepage flow test device under a kind of rock Single Fracture different temperatures, can realize under different chemical solution temperature and different confined pressure, the test of the chemical corrosion of rock Single Fracture, crack distortion.
The object of the present invention is achieved like this: chemical solution seepage flow test device under a kind of rock Single Fracture different temperatures, comprise specimen appliance system, axial pressure system, confined pressure system, chemical solution pressure loading system, servo-control system and data acquisition system (DAS), described specimen appliance system comprises test specimen, columned heat-shrink tube and has the cylinder rigid cushion block of permeability hole, annular infiltration groove and Radial Flow Through Porous Media groove, heat-shrink tube is linked on test specimen, and one end of described stiffness bearer is provided with permeability hole, annular infiltration groove and radial penetration groove; Permeability hole, annular infiltration groove and radial penetration groove are interconnected; Described chemical solution pressure loading system is provided with heating arrangement, heating arrangement comprises well heater and temperature sensor, well heater is arranged on the solution line of specimen appliance system one side, on the solution line between well heater and specimen appliance system, is provided with temperature sensor.
For realizing products perfection, improvement, raising combination property of the present invention, its further step is that the tube wall of the solution line between well heater and specimen appliance system is provided with insulation material; Well heater is ceramic heater.
The present invention adopts chemical solution pressure loading system to be provided with the technical scheme of heating arrangement, has solved current rock Single Fracture chemical solution seepage flow test device and can not realize the defect of different temperatures chemical solution to rock fracture chemical corrosion, crack deformation test.
The beneficial effect that the relative prior art of the present invention produces is:
1, under rock Single Fracture different temperatures, chemical solution seepage flow test device increases heating arrangement, can study rock fracture chemical corrosion under different temperatures chemical solution seepage effect, crack deformation test;
2, one end of the stiffness bearer of test unit is provided with permeability hole, annular infiltration groove and radial penetration groove, and chemical solution osmotic effect is better;
3, make simple, easy for installation, for scientific research facilitates.
Below in conjunction with the drawings and specific embodiments, the invention will be further described.
Accompanying drawing explanation
Fig. 1 is the structural representation of chemical solution seepage flow test device under rock Single Fracture different temperatures of the present invention.
Fig. 2 is the stiffness bearer structural representation of rock Single Fracture chemical solution seepage flow test device of the present invention.
In figure: 1, load cylinder, 2, servomotor I, 3, reductor I, 4, secondary I of worm drive, 5, piston I, 6, heat-shrink tube, 7, stiffness bearer, 8, servomotor II, 9, tachometer generator, 10, reductor II, 11, secondary II of worm drive, 12, piston I I, 13, fissure-plane, 14, seepage flow exhaust opening pipe, 15, flat bottom flask, 16, electronic balance, 17, computer controller, 18, cylinder body I, 19, cylinder body I I, 20, servomotor III, 21, flute profile belt wheel reducing gear, 22, ball-screw transmission mechanism, 23, moving beam, 24, test specimen, 25, test force sensor, 26, load axle, 27, well heater, 28, solution line, 29, insulation material, 30, temperature sensor, 31, flow sensor, 32, shaft position sensor, 33, radial displacement transducer, 34, data line I, 35, data line II, 36, valve I, 37, valve II, 38, valve III, 39, valve IV, 40, valve V, 41, valve VI, 42, permeability hole, 43, annular infiltration groove, 44, radial penetration groove.
Embodiment
Referring to accompanying drawing 1 and accompanying drawing 2, chemical solution seepage flow test device under a kind of rock Single Fracture different temperatures, comprise specimen appliance system, axial pressure system, confined pressure system, chemical solution pressure loading system, servo-control system and data acquisition system (DAS), described specimen appliance system comprises test specimen 24, columned heat-shrink tube 6 and there is permeability hole 42, the cylinder rigid cushion block 7 of annular infiltration groove 43 and radial penetration groove 44, heat-shrink tube 6 is linked on test specimen 24, one end of described stiffness bearer 7 is provided with permeability hole 42, annular infiltration groove 43 and radial penetration groove 44, wherein permeability hole 42, annular infiltration groove 43 and radial penetration groove 44 are interconnected, described chemical solution pressure loading system is provided with heating arrangement, heating arrangement comprises well heater 27 and temperature sensor 30, well heater 27 is arranged on the solution line 28 of specimen appliance system one side, on the solution line 28 between well heater 27 and specimen appliance system, is provided with temperature sensor 30.For improving test degree of accuracy, the tube wall of the solution line 28 between well heater 27 and specimen appliance system is provided with insulation material 29, the optimum ceramic heater that adopts of well heater 27.Solution line 28, stiffness bearer 7, piston I I12 are all made with corrosion resistant stainless steel material.
Specimen appliance system comprises columned heat-shrink tube 6 and has the cylinder rigid cushion block 7 of permeability hole 42, annular infiltration groove 43 and radial penetration groove 44, the Single Fracture sillar that test specimen 24 is, the artificial coarse fissure-plane 13 that produces the direction that parallels to the axis, runs through whole sample by right cylinder rock sample being carried out to Brazilian splitting, after cleavage sample is closed up, with heat-shrink tube 6, entangled, be placed between upper and lower two stiffness bearers 7.
Axial compression loading system comprises servomotor III20, flute profile belt wheel reducing gear 21, ball-screw transmission mechanism 22.Servomotor III20 drives ball-screw transmission mechanism 22 by flute profile belt wheel reducing gear 21, moving beam 23 on ball-screw applies test force by loading 26 pairs of test specimens 24 of axle, test force sensor 25 on moving beam 23 the size detection of power out and be sent in computer controller 17, when moving beam 23 is given loading axle 26 by pressure, load axle 26 and act on top stiffness bearer 7, apply axle power to test specimen 24.
Confined pressure system comprises San Zhou self-equilibrating pressure chamber and confined pressure loading system.Specimen appliance system is placed in San Zhou self-equilibrating pressure chamber, San Zhou self-equilibrating pressure chamber is connected by oil pipe with confined pressure loading system, its effect is to apply confined pressure to test specimen 24, the loading of confined pressure is to realize by load cylinder 1, the instruction that servomotor I2 sends according to Testing Software is rotated by reductor I3 and is driven the motion of secondary I4 of worm drive to drive piston I 5 rectilinear motions to adjust in-oil cylinder pressure, the pressure transducer that is arranged on load cylinder 1 oil outlet end detects oil pressure, be sent in computer controller 17, computer controller 17 is processed the measuring-signal of pressure, and compare with the pressure data arranging, then provide deviation correcting signal, the force value of applied pressure value and setting is reached unanimity.
Cylinder body I 18, cylinder body I I19 in chemical solution pressure loading system, configurable different chemical solution, chemical solution heating in 27 pairs of solution lines 28 of well heater, heating-up temperature is normal temperature to 100 ℃, by the temperature of computer controller 17 control heaters 27, and with insulation material 29, pipeline is incubated to processing, servomotor II8 is coaxially furnished with tachometer generator 9, the instruction of sending according to the Testing Software of computer controller 17 is rotated, by reductor II10 band drving sprial transmission II11, make piston I I12 carry out rectilinear motion, realize solution pressure and load.Solution flows along annular infiltration groove 43 and radial penetration groove 44 by the permeability hole 42 in the stiffness bearer 7 of specimen appliance system, flow through the fissure-plane 13 of test specimen 24, and discharge solution by the seepage flow exhaust opening pipe 14 on test specimen 24 top stiffness bearers 7, with flat bottom flask 15, collect and be placed on electronic balance 16, electronic balance 16 is connected with computer controller 17, collection penetrates the flow of rock fracture, and the flow that sees through rock fracture also can obtain by throw of poston or the flowmeter of pore water pressure loading section.
Data acquisition system (DAS) comprises liquid inventory and pressure, the axial deformation of test specimen 24 and the collection of the data such as radial deformation, confined pressure and axial compression, solution temperature, flow sensor 31 by chemical solution pressure loading system is connected with computer controller 17 with tachometer generator 9, Real-time Collection liquid inventory and pressure; By shaft position sensor 32, be connected with computer controller 17 with radial displacement transducer 33, the axial deformation of Real-time Collection test specimen 24 and radial deformation; Test force sensor 25 by axial compression loading system be connected with computer controller 17, Real-time Collection axial compression; Pressure transducer by confined pressure system is connected with computer controller 17, Real-time Collection confined pressure; By temperature sensor 30, be connected with computer controller 17, Real-time Collection flows into the solution temperature of fissure-plane 13.In process of the test, the axial deformation of computer real time record liquid inventory and pressure, test specimen 24 and radial deformation, confined pressure and axial compression, solution temperature curve.
Chemical solution seepage flow test device embodiment under rock Single Fracture different temperatures of the present invention:
(1) the cylindrical rock after splitting is closed up, form rock sample test specimen 24, test specimen 24 is of a size of diameter 50mm, height 100mm, with diameter, be 60mm, length is that the heat-shrink tube 6 of the resistance to chemical attack of 150mm entangles test specimen 24, with hair dryer, heat-shrink tube 6 is heated, guarantee heat-shrink tube 6 and test specimen 24 periphery close contacts, at test specimen 24 upper and lower sides, settle respectively and there is permeability hole 42, the cylinder rigid cushion block 7 of annular infiltration groove 43 and radial penetration groove 44, stiffness bearer 7 is of a size of diameter 50mm, thick 5mm, radial displacement transducer 33 is installed at heat-shrink tube 6 middle parts at test specimen 24 overcoats, to measure the radial deformation of test specimen 24, at two stiffness bearers 7, shaft position sensor 32 is set, to measure the axial deformation of test specimen 24, radial displacement transducer 33 and shaft position sensor 32 are passed through respectively to data line I34, data line II35 is connected with computer controller 17.
(2) pipeline of Surrounding Rock System, solution pressure loading system and chemical solution temperature control system is connected, at leakage fluid dram, will there is liquid collection after water rock chemical action in flat bottom flask 15, flat bottom flask 15 is placed on electronic balance 16, and each servomotor, pressure transducer, test force sensor 25, temperature sensor 30, flow sensor 31, shaft position sensor 32, radial displacement transducer 33, electronic balance 16 are connected with computer controller 17 respectively.
(3) the servomotor III20 in axial compression loading system drives ball-screw transmission mechanism 22 by flute profile belt wheel reducing gear 21, and the 23 pairs of test specimens 24 of moving beam on ball-screw transmission mechanism 22 apply axial compression; When confined pressure loading system is when load cylinder 1 oil sources is sufficient, valve-off I36, opens valve II37, by piston I 5 rectilinear motions, test specimen 24 is applied to confined pressure.
(4) when in chemical solution loader, solution is sufficient, valve-off III38 and valve IV39, open valve V40, servomotor II8 drives secondary II11 of worm drive by reductor II10, make the piston I I12 of loader carry out rectilinear motion, realizing solution pressure loads, by temperature sensor 30, record solution temperature, when solution pressure and temperature reach design load, open valve VI41, there is the solution of uniform temperature by inlet opening with permeability hole 42, the stiffness bearer 7 of annular infiltration groove 43 and radial penetration groove 44, infiltrate the fissure-plane 13 of test specimen 24, and discharge the reacted raffinate of water rock by seepage flow exhaust opening pipe 14, by flat bottom flask 15, collect the reacted raffinate of water rock, electronic balance 16 measures raffinate weight, weigh the quality of the raffinate flowing out at certain hour interval, be converted into flow velocity.Collecting at set intervals a bottle seepage exit raffinate adopts multiparameter water quality analyzer to carry out the concentration detection of specific ion.
(4) real time data of data acquisition system (DAS) is arranged to the mechanical characteristic of test specimen 24 distortion that produce in the time of can obtaining chemical solution infiltrate rock fracture face 13 under different temperatures, different pressures and the change rule of solution chemistry composition.

Claims (3)

1. chemical solution seepage flow test device under a rock Single Fracture different temperatures, comprise specimen appliance system, axial pressure system, confined pressure system, chemical solution pressure loading system, servo-control system and data acquisition system (DAS), described specimen appliance system comprises test specimen (24), columned heat-shrink tube (6) and cylinder rigid cushion block (7), heat-shrink tube (6) is linked on test specimen (24), it is characterized in that, one end of described stiffness bearer (7) is provided with permeability hole (42), annular infiltration groove (43) and radial penetration groove (44); Permeability hole (42), annular infiltration groove (43) and radial penetration groove (44) are interconnected; Described chemical solution pressure loading system is provided with heating arrangement, heating arrangement comprises well heater (27) and temperature sensor (30), well heater (27) is arranged on the solution line (28) of specimen appliance system one side, on the solution line (28) between well heater (27) and specimen appliance system, is provided with temperature sensor (30).
2. chemical solution seepage flow test device under rock Single Fracture different temperatures according to claim 1, is characterized in that, the tube wall of the solution line (28) between well heater (27) and specimen appliance system is provided with insulation material (29).
3. chemical solution seepage flow test device under rock Single Fracture different temperatures according to claim 1, is characterized in that, described well heater (27) is ceramic heater.
CN201310137965.0A 2013-04-22 2013-04-22 Chemical solution seepage flow test device under rock Single Fracture different temperatures CN104007013B (en)

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103776703A (en) * 2014-01-24 2014-05-07 山东大学 Hydro-fracturing water injection loading device based on rock-like resin sample and test method
CN104198354A (en) * 2014-09-28 2014-12-10 湖南科技大学 Raw coal transparent pouring piece and preparation method thereof, as well as permeability testing device
CN104370247A (en) * 2014-09-24 2015-02-25 重庆朗正科技有限公司 Rocker arm mechanism for stress corrosion testing
CN104749044A (en) * 2015-04-02 2015-07-01 北京科技大学 Thermo-hydro-mechanical (THM) coupling simulation experiment system and use method thereof
CN106525567A (en) * 2016-12-26 2017-03-22 大连理工大学 Rock time-dependent deformation testing system under combined effect of continuous water environment and variable temperature
CN106908314A (en) * 2017-04-26 2017-06-30 中国石油大学(华东) Rock core thermic splits experimental system and method under a kind of hyperbaric environment
CN107014735A (en) * 2017-05-16 2017-08-04 绍兴文理学院 A kind of multifunctional rock crack infiltration experiment system
CN108051353A (en) * 2017-12-10 2018-05-18 北京工业大学 A kind of reaction unit simulated flow rate of liquid and influenced for rock cranny Penetration Signature
CN109855973A (en) * 2019-01-22 2019-06-07 东北大学 A kind of three axis uniaxial direct tensile indoor experimental apparatus of rock and method
CN110455699A (en) * 2019-08-16 2019-11-15 交通运输部公路科学研究所 A kind of concrete erosion experimental provision and application method

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102253183A (en) * 2011-06-28 2011-11-23 山东科技大学 Shear-seepage coupling test system for rock cracks under action of confining pressure
CN103076270A (en) * 2013-01-29 2013-05-01 大连海事大学 Toroidal fissured rock sample, MHC coupled seepage experimental device of sample and use method of device
CN203191260U (en) * 2013-04-22 2013-09-11 湖南科技大学 Rock single fracture chemical solution seepage test device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102253183A (en) * 2011-06-28 2011-11-23 山东科技大学 Shear-seepage coupling test system for rock cracks under action of confining pressure
CN103076270A (en) * 2013-01-29 2013-05-01 大连海事大学 Toroidal fissured rock sample, MHC coupled seepage experimental device of sample and use method of device
CN203191260U (en) * 2013-04-22 2013-09-11 湖南科技大学 Rock single fracture chemical solution seepage test device

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103776703A (en) * 2014-01-24 2014-05-07 山东大学 Hydro-fracturing water injection loading device based on rock-like resin sample and test method
CN103776703B (en) * 2014-01-24 2015-11-18 山东大学 Based on hydrofracturing water filling charger and the test method of rocks resin test specimen
CN104370247A (en) * 2014-09-24 2015-02-25 重庆朗正科技有限公司 Rocker arm mechanism for stress corrosion testing
CN104198354A (en) * 2014-09-28 2014-12-10 湖南科技大学 Raw coal transparent pouring piece and preparation method thereof, as well as permeability testing device
CN104749044A (en) * 2015-04-02 2015-07-01 北京科技大学 Thermo-hydro-mechanical (THM) coupling simulation experiment system and use method thereof
CN104749044B (en) * 2015-04-02 2017-06-20 北京科技大学 Temperature seepage stress (THM) coupling simulation test system and its application method
CN106525567A (en) * 2016-12-26 2017-03-22 大连理工大学 Rock time-dependent deformation testing system under combined effect of continuous water environment and variable temperature
CN106908314A (en) * 2017-04-26 2017-06-30 中国石油大学(华东) Rock core thermic splits experimental system and method under a kind of hyperbaric environment
CN106908314B (en) * 2017-04-26 2020-04-14 中国石油大学(华东) Rock core thermal cracking experiment system and method in high-pressure environment
CN107014735A (en) * 2017-05-16 2017-08-04 绍兴文理学院 A kind of multifunctional rock crack infiltration experiment system
CN108051353A (en) * 2017-12-10 2018-05-18 北京工业大学 A kind of reaction unit simulated flow rate of liquid and influenced for rock cranny Penetration Signature
CN109855973A (en) * 2019-01-22 2019-06-07 东北大学 A kind of three axis uniaxial direct tensile indoor experimental apparatus of rock and method
CN110455699A (en) * 2019-08-16 2019-11-15 交通运输部公路科学研究所 A kind of concrete erosion experimental provision and application method

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