CN103558136B - Damage of rock and Permeation Test System and method of testing under temperature stress hoop seepage flow coupling - Google Patents
Damage of rock and Permeation Test System and method of testing under temperature stress hoop seepage flow coupling Download PDFInfo
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Abstract
The invention discloses damage of rock and Permeation Test System under a kind of temperature stress hoop seepage flow coupling, including frost heave force test device and pervasion test device；Pervasion test device includes loading the pressure chamber of rock sample to be measured, pressure loading device, osmotic pressure pressurization and measurement apparatus, water bath heating device, ultrasound injury test device and data acquisition unit.The invention discloses damage of rock and Permeation Test System and method of testing under temperature stress hoop seepage flow coupling, frost heave force test device is utilized after rock is carried out multigelation experiment, to measure the frost-heave force change of this rock sample, again rock is positioned in pressure chamber, utilize pressure loading device that rock sample applies pressure, under the working fluid and pressure effect of different temperatures, realize the mensuration of rock permeability coefficient k and the mensuration of ultrasonic velocity propagation time t, thus the permeability of study of rocks and degree of impairment.
Description
Technical field
The present invention relates to rock permeability test device and method of testing, particularly relate to damage of rock and Permeation Test System and method of testing under temperature stress hoop seepage flow coupling.
Background technology
In the hydrous fluids subterranean tunnel construction process of Han Qu, under excavation disturbance, stress field of the surrounding rock carries out quadratic distribution, there is temperature, the seepage flow problem to shoulder effect simultaneously, brings significant impact to engineering safety under these factor combineds effect.To such issues that evaluation and prediction, it is necessary to when to complicated coupling, the permeability of rock and damage feature carry out further investigation research.From the angle that rock temperature, stress and seepage flow multi-scenarios method and damage combine, the problem that can fundamentally solve better to run in engineering.
The infiltration coefficient of rock mass is not only the function of the feature of rock mass own, is also characterize to be inversely proportional to by the kinematic coefficient of viscosity of the characteristic function of the fluid of flowing, infiltration coefficient and fluid in rock mass, and kinematic coefficient of viscosity is the function of temperature.The infiltration coefficient of rock mass is the function of temperature of liquid, temperature affects the distribution of seepage field by affecting the infiltration coefficient of rock mass, simultaneously because the temperature potential gradient that temperature difference is formed itself will also result in the flowing of water, due to the problem that temperature potential is inherently complex, water movement is also had impact by temperature.
Under study of rocks multi-scenarios method effect, permeability, damage feature have important practical significance.For the research under this complicated coupling effect, it be unable to do without innovation and the research of testing equipment.Existing many currently, with respect to the testing equipment under coupling condition, but do not seek unity of standard, test performance very different, very least a portion of testing equipment can supply people commonly use, and most development is also merely resting on the research of particular problem.Understand the testing equipment being disclosed introduction, relate to temperature, stress, hoop seepage effect, and the assay device that can measure damage of rock in real time has not yet seen open report.
Summary of the invention
According to prior art Problems existing, the invention discloses damage of rock and Permeation Test System under a kind of temperature stress hoop seepage flow coupling, including frost heave force test device, and with described frost heave force test device with the use of pervasion test device；
Described pervasion test device includes loading the pressure chamber of rock sample to be measured, pressure loading device, osmotic pressure pressurization and measurement apparatus, water bath heating device, ultrasound injury test device and data acquisition unit；The pressurization of described pressure loading device, osmotic pressure and measurement apparatus, ultrasound injury test device are connected with pressure chamber respectively with data acquisition unit, and described water bath heating device and osmotic pressure pressurize and measurement apparatus is connected.
The bottom of described pressure chamber is fixedly connected with hydraulic jack；Described pressure loading device includes: fuel tank, oil strainer and return filter it is provided with out in described fuel tank, described go out oil strainer be connected with solenoid directional control valve respectively with return filter, described solenoid directional control valve is connected with hydraulic jack with oil return pipe by flowline；Go out to be disposed with between oil strainer and solenoid directional control valve hydraulic oil pump and check valve I, between described solenoid directional control valve and hydraulic jack, be disposed with stop valve I and remote valve；Precursor overflow valve and remote pressure regulating valve it is provided with between described solenoid directional control valve and return filter.
The pressurization of described osmotic pressure and measurement apparatus include hydraulic pump, stop valve II, check valve II, described hydraulic pump is connected with the inlet of pressure chamber, it is disposed with check valve II and stop valve II between described hydraulic pump and pressure chamber, between described stop valve II and pressure chamber, is provided with osmotic pressure Pressure gauge.
Described pressure chamber includes the cylinder body holding rock sample of a hollow, the bottom of described cylinder interior and top are connected with force-transmitting pole I and force-transmitting pole II respectively, described force-transmitting pole I and force-transmitting pole II stretches out along described cylinder body respectively, the accommodation space placing hollow fissure rock test specimen it is provided with between described force-transmitting pole I and force-transmitting pole II, the upper surface of described force-transmitting pole I and the lower surface of force-transmitting pole II are respectively provided with fluted I and groove II, it is provided with rubber seal in described groove I and groove II, described cylinder body is provided with upper end cover and bottom end cover, multiple sealing ring it is provided with between described upper end cover and bottom end cover and cylinder body.
It is respectively arranged with ultrasound probe I and ultrasound probe II, described ultrasound probe I and ultrasound probe II in described force-transmitting pole I and force-transmitting pole II to be connected with described ultrasound injury test device.
Described cylinder body has inlet and liquid outlet, and described cylinder body is connected with described hydraulic pump by inlet, and described liquid outlet is connected to effusion meter.
Described data acquisition unit includes displacement transducer and pressure transducer.
Damage of rock and penetration testing method under a kind of temperature stress hoop seepage flow coupling, comprise the following steps:
Step 1: key rock is prefabricated into the rock sample of the various hollow with different arrangement crack；
Step 2: rock sample prefabricated in step 1 is loaded in frost heave force test device, carries out multigelation, the frost-heave force change of rock sample in real-time online detection multigelation process；
Step 3: rock sample is taken out in frost heave force test device, is loaded in pressure chamber, utilizes axial loading device that rock sample is applied preheating setting pressure, rock sample is sealingly disposed in cylinder body；
Step 4: start water bath heating device and regulate the temperature of liquid T that test is required, provides penetrating fluid for detection under osmotic pressure；
Step 5: utilize osmotic pressure pressurization and measurement apparatus that rock sample applies osmotic pressure, measure the seepage discharge Q of liquid in cylinder body；Utilize ultrasound injury test device to measure the Initial travel times t in rock sample of the sound wave under osmotic pressure effect simultaneously0；
Step 6: rock sample is applied axial compressive force, gathers displacement data and pressure data by displacement transducer and pressure transducer；By the seepage discharge Q of liquid under the propagation time t and different liquids temperature T of sound wave in ultrasound injury test device record loading procedure, velocity of wave is calculated according to measurement data acoustic transit time t, permeability k is calculated, thus analyzing the situation of change in temperature stress hoop seepage flow coupling rock permeability according to the osmotic pressure P measured and seepage discharge Q.
Owing to have employed technique scheme, the invention discloses damage of rock and Permeation Test System and method of testing under temperature stress hoop seepage flow coupling, frost heave force test device is utilized after rock is carried out multigelation experiment, to measure the frost-heave force change of this rock sample, again rock is positioned in pressure chamber, utilize pressure loading device that rock sample applies pressure, under the working fluid and pressure effect of different temperatures, realize the mensuration of rock permeability coefficient k and the mensuration of ultrasonic velocity propagation time t, thus the permeability of study of rocks and degree of impairment.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present application or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, the accompanying drawing that the following describes is only some embodiments recorded in the application, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of damage of rock and Permeation Test System in the present invention.
Fig. 2 is the structural representation of pervasion test device in the present invention.
Fig. 3 is pressure chamber and the connection diagram of multiple devices in present system in the present invention.
Fig. 4 is the structural representation of frost heave force test device in the present invention.
Fig. 5 is the structural representation of pressure chamber in the present invention.
Fig. 6 is the structural representation of pressure loading device in the present invention.
The structural representation of osmotic pressure pressurization and measurement apparatus in Fig. 7 present invention.
Fig. 8 is the flow chart of the method for testing of damage of rock and Permeation Test System in the present invention.
In figure: 100. frost heave force test devices；200. pervasion test device；1. pressure loading device；2. pressure chamber；3. osmotic pressure pressurization and measurement apparatus；4. water bath heating device；5. ultrasound injury test device；6. data acquisition unit；2-1. hydraulic jack；10. flowline；11. fuel tank；11-1. go out oil strainer；11-2. return filter；12. hydraulic oil pump；13. check valve I1；14. stop valve I；15. remote valve；17. solenoid directional control valve；18. precursor overflow valve；19. remote pressure regulating valve；10.1. oil return pipe；31. hydraulic pump；32. stop valve II；33. check valve II；34. osmotic pressure Pressure gauge；20. cylinder body；20-1. force-transmitting pole I；20-2. force-transmitting pole II；27. accommodation space；20.1 groove I；20.2 groove II；20.3. rubber seal；20.4. upper end cover；20.5 bottom end cover；20.6 sealing ring；12-1. ultrasound probe I；12-2. ultrasound probe II；20.7 inlet；20.8 liquid outlet；23. effusion meter.
Detailed description of the invention
For making technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear complete description:
As shown in Figure 1, a kind of damage of rock and Permeation Test System, including frost heave force test device 100 and pervasion test device 200, frost heave force test device 100 is application number in the present invention: 2013206217889, patent name: the prior art disclosed in a kind of saturated rock frost-heave force real-time online testing device, the structural representation being illustrated in figure 4 in the present invention frost heave force test device 100, as disclosed in the patent No. 2013206217889 shown in figure of the prior art.Choose on-the-spot rock sample, be processed into the standard rock sample of hollow the crack of prefabricated various combination form, measured the size of rock sample frost-heave force in frozen-thaw process by frost heave force test device 100.Native system by frost heave force test device 100 and pervasion test device 200 with the use of.
Further, as shown in Figures 2 and 3, pervasion test device 200 includes: load the pressure chamber 2 of rock sample to be measured, pressure loading device 1, osmotic pressure pressurization and measurement apparatus 3, water bath heating device 4, ultrasound injury test device 5 and data acquisition unit 6, pressure loading device 1 is connected with pressure chamber 2, osmotic pressure pressurization and measurement apparatus 3, ultrasound injury test device 5 be connected with pressure chamber 2 respectively with data acquisition unit 6, data acquisition unit 6 can be computer, and test data are acquired and are calculated.Water bath heating device 4 is connected with osmotic pressure pressurization and measurement apparatus 3.Wherein pressure chamber 2 for application number is: 2013206173626, and name is called: the prior art disclosed in a kind of damage of rock and pervasion test device.The structural representation being illustrated in figure 5 in the present invention pressure chamber 2.In use pressure chamber is fixed on support body.In the present invention the bottom of pressure chamber 2 is connected to hydraulic jack 2-1, as it is shown on figure 3, pressure chamber 2 is connected with pressure loading device 1 by hydraulic jack 2-1.
Further, as shown in Figure 6, pressure loading device 1 includes: fuel tank 11, oil strainer 11-1 and return filter 11-2 it is provided with out in described fuel tank 11, described go out oil strainer 11-1 be connected with solenoid directional control valve 17 respectively with return filter 11-2, described solenoid directional control valve 17 is connected with hydraulic jack 2-1 with oil return pipe 10.1 by flowline 10.
Further, as shown in Figure 3 and Figure 6, go out to be disposed with between oil strainer 11-1 and solenoid directional control valve 17 hydraulic oil pump 12 and check valve I13, between described solenoid directional control valve 17 and hydraulic jack 2-1, be disposed with stop valve I14 and remote valve 15；Precursor overflow valve 18 and remote pressure regulating valve 19 it is provided with between described solenoid directional control valve 17 and return filter 11-2.
Further, such as Fig. 3 and as shown in Figure 7, osmotic pressure pressurization and measurement apparatus 3 include hydraulic pump 31, stop valve II32, check valve II33, described hydraulic pump 31 is connected with the inlet of pressure chamber 2, it is disposed with check valve II33 and stop valve II32 between described hydraulic pump 31 and pressure chamber 2, between described stop valve II32 and pressure chamber 2, is provided with osmotic pressure Pressure gauge 34.
nullFurther，As shown in Figure 3 and Figure 5，Under in working order，Pressure chamber is arranged on support body and uses，Pressure chamber 2 includes the cylinder body 20 holding rock sample of a hollow，Bottom and top within described cylinder body 20 are connected with force-transmitting pole I20-1 and force-transmitting pole II20-2 respectively，Described force-transmitting pole I20-1 and force-transmitting pole II20-2 stretches out along described cylinder body 20 respectively，The accommodation space 27 placing hollow fissure rock test specimen it is provided with between described force-transmitting pole I20-1 and force-transmitting pole II20-2，The upper surface of described force-transmitting pole I20-1 and the lower surface of force-transmitting pole II20-2 are respectively provided with fluted I20.1 and groove II20.2，It is provided with rubber seal 20.3 in described groove I20.1 and groove II20.2，Described cylinder body 20 is provided with upper end cover 20.4 and bottom end cover 20.5，Multiple sealing ring 20.6 it is provided with between described upper end cover 20.4 and bottom end cover 20.5 and cylinder body 20.Utilize the mating reaction of the rubber seal 20.3 in groove I20.1 and groove II20.2 and multiple sealing ring 20.6, make rock sample be sealingly disposed in cylinder body 20.
Further, it is respectively arranged with ultrasound probe I12-1 and ultrasound probe II12-2, described ultrasound probe I12-1 and ultrasound probe II12-2 in described force-transmitting pole I20-1 and force-transmitting pole II20-2 to be connected with described ultrasound injury test device 5.
Further, described cylinder body 20 has inlet 20.7 and liquid outlet 20.8, and described cylinder body 20 is connected with described hydraulic pump 31 by inlet 20.7, and described liquid outlet 20.8 is connected to effusion meter 23.By inlet 20.7, the liquid in water bath heating device 6 is injected in rock sample, then pass through liquid outlet 20.8 and flow out, utilize effusion meter 23 to measure seepage discharge Q.
Further, described data acquisition unit 6 includes displacement transducer and pressure transducer.
Embodiment: this damage of rock is as follows with the testing process of Permeation Test System: first rock sample is processed into the hollow structure that the device matching form with native system closes, rock sample is fabricated to multi-form special crack combination, by rock sample multigelation in frost heave force test device 100, the force cell that this device has is utilized to measure the size of frost-heave force.Then rock sample is taken out in frost heave force test device 100, put into the pressure chamber 2 of pervasion test device 200, and ensure that pressure chamber 2 seals setting.Utilize pressure loading device 1 that pressure chamber 2 is risen to certain altitude, ensure that rock sample seals in pressure chamber 2, force cell reading in pressure chamber 2 is reset, with ultrasound injury, ultrasound probe I12-1 and ultrasound probe II12-2 is tested device 5 be connected, the inlet 20.7 of pressure chamber 2 is connected with hydraulic pump 31, hydraulic pump 31 is connected with water bath heating device 4, and the temperature in water bath heating device 4 is adjusted to the temperature that experiment is required.Open hydraulic pump 31, under seepage effect, utilize ultrasound injury test device 5 and ultrasound probe I12-1 and ultrasound probe II12-2 test sound wave propagation time initial value.Utilize pressure loading device 1 that the rock sample in pressure chamber 2 is applied pressure, utilize Pressure gauge 10-1 to measure pressure size, apply osmotic pressure, utilize ultrasound injury test device 5 and ultrasound probe test acoustic transit time under osmotic pressure effect.The seepage discharge of liquid under synchronous recording acoustic transit time, axial strain, load and different temperatures in test, utilizes effusion meter 23 to measure seepage discharge.
In pressure loading device 1, wherein it is provided with the motor I16 driving hydraulic oil pump 12 work, is provided with, in osmotic pressure pressurization and measurement apparatus 3, the motor II35 driving hydraulic pump 31 work.
Ultrasonic velocity V, the computational methods of permeability k and formula, as follows:
1. ultrasonic velocity V measures damage needs to measure the sound wave propagation time in test specimen, calculates and obtains acoustic velocity.Based on compressional wave parameter in above-mentioned test process, if sound wave is T through the Mintrop wave time of advent after rock samplep, sound wave travel distance in rock is L, then compressional wave can be expressed as: Vp=L/Tp.Owing to ultrasound probe is built in force-transmitting pole, so needing sonic wave traveltime in force-transmitting pole is corrected, if the sonic wave traveltime in force-transmitting pole recorded is T0, then the velocity of sound is calculated as: Vp=L/ (Tp-T0)。
Velocity of wave definition damage variable according to rock, damage variable is defined as:
D=1-Vp/Vp0
In formula: VpAnd Vp0The velocity of sound for the velocity of sound of rock and rock parent.
2. the laboratory measurement of permeability k has Transient Method and steady state method 2 kinds, namely steady state method is measured is provide stable pressure reduction at the two ends of rock sample, by the pressure reduction (or flow) of measurement thus obtaining the permeability k of rock, but the testing time longer certainty of measurement that experiment needs is higher, is suitable for the rock of bigger permeability.This experimental test selects this kind of measuring method, has computing formula as follows according to stable Darcy law:
In formula: Q is fluid flow；Δ P is the pressure reduction at core two ends；Δ L is the length of core；A is core cross-sectional area；K is rock permeability；μ is the viscosity of fluid.
Above-mentioned formula is suitably revised, the computing formula of this measurement device permeability can be obtained, replace the length Δ L of core by the distance of test specimen external diameter to internal diameter, replace core cross-sectional area A with the surface area of cylindrical specimen.Have only to measure the flow of fluid in the unit interval, it is possible to obtain the permeability k of rock.
As shown in Figure 8: damage of rock and penetration testing method under a kind of temperature stress and hoop seepage flow coupling, comprise the following steps:
Step 1: key rock is prefabricated into the rock sample of the various hollow with different arrangement crack；
Step 2: rock sample prefabricated in step 1 is loaded in frost heave force test device 100, carries out multigelation, the frost-heave force change of rock sample in real-time online detection multigelation process；
Step 3: taken out in frost heave force test device 100 by rock sample, be loaded in pressure chamber 2, utilizes axial loading device 1 that rock sample is applied preheating setting pressure, is sealingly disposed in cylinder body 20 by rock sample；Owing to having being connected of rubber seal 20.3 and multiple sealing ring in pressure chamber 2, rock sample is made to be sealingly disposed in cylinder body 20.
Step 4: start water bath heating device 4 and regulate the temperature of liquid T that test is required, provides penetrating fluid for detection under osmotic pressure；
Step 5: utilize osmotic pressure pressurization and measurement apparatus 3 that rock sample is applied osmotic pressure, measure the seepage discharge Q of liquid in cylinder body 20；Wherein seepage discharge Q utilizes effusion meter 23 to record.Utilize ultrasound injury test device 5 to measure the Initial travel times t in rock sample of the sound wave under osmotic pressure effect simultaneously0；
Step 6: rock sample is applied axial compressive force, gathers displacement data and pressure data by displacement transducer and pressure transducer；Recorded the seepage discharge Q of liquid under the propagation time t and different liquids temperature T of sound wave in loading procedure by ultrasound injury test device 5, calculate velocity of wave according to measurement data acoustic transit time t, owing to the change of velocity of wave reflects the degree of impairment of rock itself.Permeability k is calculated, thus analyzing the situation of change in temperature stress hoop seepage flow coupling rock permeability according to the osmotic pressure P measured and seepage discharge Q.
The damage of rock of patent disclosure of the present invention and Permeation Test System and method of testing, the damage of rock under different stress level, the different temperatures of seepage flow liquid, hoop osmotic pressure effect and permeability correlation test can be carried out, the special construction adopting the pressure chamber 2 of hoop seepage flow combines from different rock samples, adopt water bath heating device 4 that seepage flow liquid is carried out temperature control, while measuring permeability, the axial ultrasonic velocity of wave of rock sample can be measured, with the damage feature of this study of rocks test specimen.
The above; it is only the present invention preferably detailed description of the invention; but protection scope of the present invention is not limited thereto; any those familiar with the art is in the technical scope that the invention discloses; it is equal to replacement according to technical scheme and inventive concept thereof or is changed, all should be encompassed within protection scope of the present invention.
Claims (7)
1. damage of rock and Permeation Test System under a temperature stress hoop seepage flow coupling, including frost heave force test device (100), and with described frost heave force test device (100) with the use of pervasion test device (200), it is characterised in that:
Described pervasion test device (200) includes loading the pressure chamber (2) of rock sample to be measured, pressure loading device (1), osmotic pressure pressurization and measurement apparatus (3), water bath heating device (4), ultrasound injury test device (5) and data acquisition unit (6)；The pressurization of described pressure loading device (1), osmotic pressure and measurement apparatus (3), ultrasound injury test device (5) are connected with pressure chamber (2) respectively with data acquisition unit (6), and described water bath heating device (4) and osmotic pressure pressurize and measurement apparatus (3) is connected；
The bottom of described pressure chamber (2) is fixedly connected with hydraulic jack (2-1)；Described pressure loading device (1) including: fuel tank (11), oil strainer (11-1) and return filter (11-2) it is provided with out in described fuel tank (11), described go out oil strainer (11-1) be connected with solenoid directional control valve (17) respectively with return filter (11-2), described solenoid directional control valve (17) is connected with hydraulic jack (2-1) with oil return pipe (10.1) by flowline (10)；Go out to be disposed with between oil strainer (11-1) and solenoid directional control valve (17) hydraulic oil pump (12) and check valve I (13), between described solenoid directional control valve (17) and hydraulic jack (2-1), be disposed with stop valve I (14) and remote valve (15)；Precursor overflow valve (18) and remote pressure regulating valve (19) it is provided with between described solenoid directional control valve (17) and return filter (11-2).
2. damage of rock and Permeation Test System under temperature stress hoop seepage flow coupling according to claim 1, it is further characterized in that: the pressurization of described osmotic pressure and measurement apparatus (3) include hydraulic pump (31), stop valve II (32), check valve II (33), described hydraulic pump (31) is connected with the inlet of pressure chamber (2), check valve II (33) and stop valve II (32) it is disposed with between described hydraulic pump (31) and pressure chamber (2), it is provided with osmotic pressure Pressure gauge (34) between described stop valve II (32) and pressure chamber (2).
null3. damage of rock and Permeation Test System under temperature stress hoop seepage flow coupling according to claim 1，It is further characterized in that: described pressure chamber (2) includes the cylinder body (20) holding rock sample to be measured of a hollow，Bottom and top that described cylinder body (20) is internal are connected with force-transmitting pole I (20-1) and force-transmitting pole II (20-2) respectively，Described force-transmitting pole I (20-1) and force-transmitting pole II (20-2) stretch out along described cylinder body (20) respectively，The accommodation space (27) placing rock sample to be measured it is provided with between described force-transmitting pole I (20-1) and force-transmitting pole II (20-2)，The upper surface of described force-transmitting pole I (20-1) and the lower surface of force-transmitting pole II (20-2) are respectively provided with fluted I (20.1) and groove II (20.2)，It is provided with rubber seal (20.3) in described groove I (20.1) and groove II (20.2)，Described cylinder body (20) is provided with upper end cover (20.4) and bottom end cover (20.5)，Multiple sealing ring (20.6) it is provided with between described upper end cover (20.4) and bottom end cover (20.5) and cylinder body (20).
4. damage of rock and Permeation Test System under temperature stress hoop seepage flow coupling according to claim 3, it is further characterized in that: be respectively arranged with ultrasound probe I (12-1) and ultrasound probe II (12-2), described ultrasound probe I (12-1) and ultrasound probe II (12-2) in described force-transmitting pole I (20-1) and force-transmitting pole II (20-2) and be connected with described ultrasound injury test device (5).
5. damage of rock and Permeation Test System under temperature stress hoop seepage flow coupling according to claim 3, it is further characterized in that: described cylinder body (20) has inlet (20.7) and liquid outlet (20.8), described cylinder body (20) is connected with described hydraulic pump (31) by inlet (20.7), and described liquid outlet (20.8) is connected to effusion meter (23).
6. damage of rock and Permeation Test System under temperature stress hoop seepage flow coupling according to claim 5, be further characterized in that: described data acquisition unit (6) includes displacement transducer and pressure transducer.
7. the method for testing of damage of rock and Permeation Test System under a temperature stress hoop seepage flow coupling as claimed in claim 6, it is characterised in that: comprise the following steps:
Step 1: key rock is prefabricated into and various there is rock sample to be measured in different arrangement crack；
Step 2: rock sample prefabricated in step 1 is loaded in frost heave force test device (100), carries out multigelation, the frost-heave force change of rock sample in real-time online detection multigelation process；
Step 3: rock sample is taken out in frost heave force test device (100), it is loaded in pressure chamber (2), utilize pressure loading device (1) that rock sample is applied preheating setting pressure, rock sample is sealingly disposed in cylinder body (20)；
Step 4: start water bath heating device (4) and regulate the temperature of liquid T that test is required, provides penetrating fluid for detection under osmotic pressure；
Step 5: utilize osmotic pressure pressurization and measurement apparatus (3) that rock sample is applied osmotic pressure, measure the seepage discharge Q of cylinder body (20) interior liquid；Utilize ultrasound injury test device (5) to measure the Initial travel times t in rock sample of the sound wave under osmotic pressure effect simultaneously0；
Step 6: rock sample is applied axial compressive force, gathers displacement data and pressure data by displacement transducer and pressure transducer；The seepage discharge Q of liquid under the propagation time t and different liquids temperature T of sound wave is tested in device (5) record loading procedure by ultrasound injury, velocity of wave is calculated according to measuring acoustic transit time t, permeability k is calculated, thus analyzing the situation of change in temperature stress hoop seepage flow coupling rock permeability according to the osmotic pressure P measured and seepage discharge Q.
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