CN109470570A - A kind of water oil isolated form immersion triaxial test case and test method - Google Patents
A kind of water oil isolated form immersion triaxial test case and test method Download PDFInfo
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- CN109470570A CN109470570A CN201811414444.4A CN201811414444A CN109470570A CN 109470570 A CN109470570 A CN 109470570A CN 201811414444 A CN201811414444 A CN 201811414444A CN 109470570 A CN109470570 A CN 109470570A
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- 238000012360 testing method Methods 0.000 title claims abstract description 210
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- 238000007654 immersion Methods 0.000 title claims abstract description 65
- 238000010998 test method Methods 0.000 title claims abstract description 16
- 238000000034 method Methods 0.000 claims abstract description 38
- 230000001105 regulatory effect Effects 0.000 claims abstract description 12
- 238000011049 filling Methods 0.000 claims abstract description 11
- 239000003921 oil Substances 0.000 claims description 58
- 239000010720 hydraulic oil Substances 0.000 claims description 27
- 238000012544 monitoring process Methods 0.000 claims description 22
- 238000002474 experimental method Methods 0.000 claims description 21
- 238000010257 thawing Methods 0.000 claims description 12
- 238000006424 Flood reaction Methods 0.000 claims description 9
- 238000005065 mining Methods 0.000 claims description 8
- 238000002791 soaking Methods 0.000 claims description 7
- 230000008014 freezing Effects 0.000 claims description 6
- 238000007710 freezing Methods 0.000 claims description 6
- 230000007797 corrosion Effects 0.000 claims description 4
- 238000005260 corrosion Methods 0.000 claims description 4
- 239000000243 solution Substances 0.000 claims description 4
- 238000002955 isolation Methods 0.000 claims description 3
- 238000005057 refrigeration Methods 0.000 claims description 3
- 239000005341 toughened glass Substances 0.000 claims description 3
- 239000002253 acid Substances 0.000 claims description 2
- 239000012670 alkaline solution Substances 0.000 claims description 2
- 230000006378 damage Effects 0.000 claims description 2
- 239000011435 rock Substances 0.000 abstract description 26
- 238000004088 simulation Methods 0.000 abstract description 4
- 108010066057 cabin-1 Proteins 0.000 description 20
- 238000011068 loading method Methods 0.000 description 13
- 239000000463 material Substances 0.000 description 10
- 230000008569 process Effects 0.000 description 8
- 230000008859 change Effects 0.000 description 7
- 239000003153 chemical reaction reagent Substances 0.000 description 7
- 238000010276 construction Methods 0.000 description 7
- 239000007788 liquid Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 238000001035 drying Methods 0.000 description 4
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 4
- 238000011160 research Methods 0.000 description 4
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- 238000005070 sampling Methods 0.000 description 2
- KKADPXVIOXHVKN-UHFFFAOYSA-N 4-hydroxyphenylpyruvic acid Chemical compound OC(=O)C(=O)CC1=CC=C(O)C=C1 KKADPXVIOXHVKN-UHFFFAOYSA-N 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 108010066114 cabin-2 Proteins 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000007791 dehumidification Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
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- 235000013399 edible fruits Nutrition 0.000 description 1
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- XUFQPHANEAPEMJ-UHFFFAOYSA-N famotidine Chemical compound NC(N)=NC1=NC(CSCCC(N)=NS(N)(=O)=O)=CS1 XUFQPHANEAPEMJ-UHFFFAOYSA-N 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
- G01N3/12—Pressure testing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0001—Type of application of the stress
- G01N2203/0003—Steady
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0019—Compressive
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0048—Hydraulic means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/025—Geometry of the test
- G01N2203/0256—Triaxial, i.e. the forces being applied along three normal axes of the specimen
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The present invention provides a kind of water oil isolated form immersion triaxial test case and test methods, it is related to technical field of test equipment, solves the technical issues of being difficult to carry out to become confining pressure test under conditions of test specimen soaks for a long time, the chamber includes submurged pressure cabin, hydraulic cargo tank, heater, pressure sensor, temperature sensor, seepage channel, refrigerating plant, hydraulic pressure control device and seepage flow regulating device, submurged pressure cabin is arranged in hydraulic cargo tank, fexible film is provided between submurged pressure cabin and hydraulic cargo tank, seepage channel is connected to submurged pressure cabin and seepage flow regulating device.The operation such as confining pressure load is directly carried out to the test specimen in submurged pressure cabin using above-mentioned apparatus and unloads confining pressure, simulates the deformation of rock when exploiting under mine difference water-filling state.Test box structure provided by the invention has many advantages, such as that structure is simple, easy to operate, also has many advantages, such as that experimental error is small using the method that chamber is tested, simulation context is wide.
Description
Technical field
The present invention relates to rock mechanics experiment equipment technical field, especially a kind of immersion triaxial test of water oil isolated form
Case and the method for carrying out triaxial test using the device.
Background technique
Recently as the continuous development of China's economy, China's mining engineering, Tunnel Engineering, subway engineering and other
Lower engineering is rapidly developed.But having some engineerings that can encounter soft rock in construction, soft rock meets water and is easy softening, leads to rock
Strength reduction causes huge difficulty to construction, while producing serious influence to worker safety.Therefore, pass through rock
The mechanical property that experiment of machanics analysis rock soaks for a long time in water, plays an important role practice of construction.
In the existing experiment of machanics research for acting on lower rock sample for water, the different soaking times of control are largely mostly used
With measuring and calculating the methods of test specimen moisture content, but there is no test specimen to soak loading device in experiment loading procedure, is with after immersion
The test specimen of taking-up is tested, and loading procedure will generally undergo several hours, is easy in this case so that in rock sample
Moisture evaporation, cause experimental result to have large error.Chinese patent CN201810004350 proposes a kind of consideration dry and wet and follows
The Rock And Soil cutting creep instrument of ring is simulated by the drying and watering cycle that the device can carry out full water and dehumidification to test specimen, but not considered
The case where long-term immersion changes with confining pressure cannot accomplish to the experiment of machanics research under this kind of operating condition.Chinese patent
CN2017214773 proposes a kind of humidity conditioner for uniaxial compression test, can control the wet of test specimen by the device
Spend the mechanical property to test test specimen in the case of different dry and wets, but the patent does not consider to soak for a long time and the work of different confining pressures
Condition can not carry out the experiment of machanics research under corresponding operating condition.In addition, Chinese patent CN201110198841,
The existing triaxial tests such as CN201720459789, CN201730487413, CN201721715979, CN201721697658
Device, using the confining pressure for changing the fixing fabric structure sealed test piece of hydraulic oil around sealed test piece, by being divided with some seal approach
Every test specimen and hydraulic oil, though this set, which can change test specimen confining pressure, finds that hydraulic oil still can be with examination in experiment by practical operation
Part contact, the hydraulic oil of infiltration can change the mechanical property of test specimen to a certain extent, cause the influence to test specimen to change
Experimental result, it is therefore desirable to which existing experimental rig is improved further.
In addition existing three axis loading experimental method does not consider the actual condition of immersion ore pillar, rock mass for a long time, Wu Famo yet
Experiment of machanics research under quasi- similar operating condition, especially to different liquid height, different materials test specimen, different confining pressures, different load shapes
Different confining pressures immersion triaxial tests methods are isolated in the water oil of formula.Existing three-axis force experimental method is by changing around test specimen
The confining pressure of the fixing fabric structure sealed test piece of hydraulic oil, though this experimental method can accomplish that changing test specimen confining pressure passes through practical operation
It was found that hydraulic oil can still be contacted with test specimen in experiment, the hydraulic oil of infiltration can change the mechanical property of test specimen to a certain extent,
Change and load of the existing loading method in experiment loading procedure to rock sample confining pressure in immersion, in order to enable experiment tie
Fruit and Practical Project situation can provide more scientific more closely, then by analysis of experimental results for similar operating condition construction
Reasonable construction reference, it is therefore desirable to which existing experimental method is improved further.
Summary of the invention
To solve to be difficult to the technical issues of become confining pressure test under conditions of test specimen soaks for a long time, the present invention provides one
Kind water oil isolated form immersion triaxial test case and test method, specific technical solution are as follows:
A kind of water oil isolated form immersion triaxial test case, including submurged pressure cabin, hydraulic cargo tank, heater, pressure sensing
Device, temperature sensor, seepage channel, refrigerating plant, hydraulic pressure control device and seepage flow regulating device；The heater setting is being soaked
In water pressure cabin, refrigerating plant setting hydraulic oil out of my cabin；The pressure sensor is set on the base, the immersion pressure
Power cabin is arranged in hydraulic cargo tank, is provided with fexible film between submurged pressure cabin and hydraulic cargo tank；The seepage channel setting
On pedestal, seepage channel is connected to submurged pressure cabin and seepage flow regulating device, is provided with equilibrated valve in the seepage channel；
The hydraulic pressure control device is connected with hydraulic cargo tank by oil pipe, and directional control valve, the temperature sensor are provided on oil pipe
It is arranged in submurged pressure cabin.
Preferably, hydraulic cargo tank and the shell in submurged pressure cabin are made by transparent toughened glass, and the temperature passes
Sensor is pressure resistant type temperature sensor, and the pressure sensor is water proof type pressure sensor, and the equilibrated valve is specially
High-pressure balanced valve, the directional control valve are specially high pressure directional control valve.
Preferably, fexible film is fully wrapped around by test specimen, and the top edge of the fexible film is fixed on submurged pressure cabin
On the shell on top, the lower edge of the fexible film is fixed on the base.
Preferably, stabilized pressure pump is provided in seepage flow regulating device, submurged pressure cabin edge is additionally provided with pressure gauge；
Safety valve is additionally provided on the oil pipe.
A method of immersion uniaxial test is tested using above-mentioned water oil isolated form immersion triaxial test case, is tried
Testing step includes:
Step 1 prepares test specimen, test specimen is placed in the submurged pressure cabin of water oil isolated form immersion triaxial test case,
In submurged pressure cabin inject water, and control water filling after test specimen flood height；
Step 2 using testing machine pressure head carry out axial pressure, until test specimen destroy, while record test specimen stress and
Strain monitoring data.
A method of immersion triaxial test is tested using above-mentioned water oil isolated form immersion triaxial test case, is tried
Testing step includes:
Step 1 prepares test specimen, test specimen is placed in the submurged pressure cabin of water oil isolated form immersion triaxial test case,
Water is filled in submurged pressure cabin, floods test specimen completely；
Step 2 carries out axial application prestressing force using the pressure head of testing machine, and injects hydraulic oil into hydraulic cargo tank and protect
Pressure is held to stablize；
Step 3 continue with testing machine pressure head carry out axial pressure, until test specimen destroy, record test specimen stress and
Strain monitoring data.
A method of three axis of immersion unload confining pressure test, are tried using above-mentioned water oil isolated form immersion triaxial test case
It tests, test procedure includes:
Step 1 prepares test specimen, test specimen is placed in the submurged pressure cabin of water oil isolated form immersion triaxial test case,
Water is filled in submurged pressure cabin, floods test specimen completely；
Step 2 carries out axial application prestressing force using the pressure head of testing machine, and gradually injects into hydraulic cargo tank hydraulic
Oil persistently increases the pressure of hydraulic oil in hydraulic cargo tank to confining pressure value, monitors the pressure value in submurged pressure cabin；
The rate of step 3 adjustment unloading confining pressure, records the stress and strain monitoring data of test specimen.
A method of immersion mining influence triaxial test is tried using above-mentioned water oil isolated form immersion triaxial test case
It tests, test procedure includes:
Step 1 prepares test specimen, test specimen is placed in the submurged pressure cabin of water oil isolated form immersion triaxial test case,
Water is filled in submurged pressure cabin, floods test specimen completely；
Step 2 carries out axial application prestressing force using the pressure head of testing machine, and gradually injects into hydraulic cargo tank hydraulic
Oil；
The rate of step 3 adjustment unloading confining pressure and the rate of axial pressure, persistently increase hydraulic oil in hydraulic cargo tank
Pressure is to confining pressure value；Axial pressure is carried out simultaneously until test specimen destruction, monitors the pressure value in submurged pressure cabin；Record test specimen is answered
Power and strain monitoring data.
Preferably, acid solution or alkaline solution are also injected in submurged pressure cabin, test specimen answers under record corrosion condition
Power and strain monitoring data；The refrigerating plant work freezing test specimen, records the stress and strain monitoring of test specimen in freeze-up situation
Data, or after the refrigerating plant is freezed test specimen, heater work defrosting test specimen, circulating frozen and course of defrosting, record
The stress and strain monitoring data of test specimen under circulating frozen thawing condition.
The beneficial effect comprise that
(1) fexible film with some strength is made using flexible material in water oil isolation immersion triaxial tests case, is used for
Separate hydraulic oil and water, avoids and pollute the problem of test specimen is to impact experiment in hydraulic oil water leaking-in；Fexible film
Also the confining pressure in hydraulic cargo tank can be transferred in submurged pressure cabin to greatest extent, accomplishes to make submurged pressure cabin and hydraulic cargo tank
Interior confining pressure is consistent, avoids machine error.
(2) immersion triaxial tests case is isolated using water oil and carries out triaxial test, it can be real in mechanical test loading procedure
Now the rock sample in the case of soaking for a long time with controllable confining pressure is loaded directly into, according to experimental result and Practical Project
Situation is analyzed, to provide more scientific and reasonable construction reference for similar operating condition.It can also be simulated not using the device
The operating condition of different loading forms under the conditions of synthermal, different materials, different confining pressures, different immersions, is tested under different situations
The mechanical property of the materials such as rock.
(3) chemical reagent is added in submurged pressure cabin, and then studies the mechanical property of rock in the case of different reagent immersions
Matter；Similarly when carrying out uniaxial compression test, the liquid level of reagent can also adjust according to different needs, can also simulate
It is complete to soak and drain alternate drying and watering cycle phenomenon completely.
(4) method and steps tested using the device is simple and easy, and experimental rig is easy to operate, and experimental data is received
Collection convenience.Pass through the special-purpose water-proof pressure sensor arranged in experimental box loaded seat and the pressure gauge being arranged on submurged pressure cabin
Etc. monitoring devices, in real time record test during confining pressure parameter, avoiding fexible film occurs oil pressure in transmittance process
The error of decaying and monitor value and actual value.
(5) indoor experiment of machanics by triaxial tests case to rock sample immersion under the conditions of, carry out different loads, unloading and
A combination thereof scheme, the loading conditions of country rock or ore pillar when simulating mine different zones water-filling.By control rate of debarkation and
Loading speed does variable, the influence form of different coal-mining methods in the case of different water-fillings can be represented, with uniaxial tests and routine
Triaxial tests and conventional unloading experiment compare statistics, can analyze the loaded failure mode of mine different zones water-filling rock, mould
Quasi- mining induced stress scholarship and moral conduct of each position coal and rock of mine under the influence of by water is to reproduce the loaded of each water-filling region coal and rock of mine to break
Bad process.
In addition also there is this experimental provision each section can be freely disassembled, and decomposition is easy to assembly, place test specimen replacement conveniently,
The advantages that each component cleaning replacement of device is flexible.
Detailed description of the invention
Fig. 1 is a kind of water oil isolated form immersion triaxial test case overall structure diagram；
Fig. 2 is water oil isolated form immersion triaxial test case overlooking structure diagram；
Fig. 3 is the flow diagram of experimental method；
In figure: 1- submurged pressure cabin；The hydraulic cargo tank of 2-；3- heater；4- pressure sensor；5- temperature sensor；6- seeps
Circulation road；7- refrigerating plant；8- hydraulic pressure control device；9- seepage flow regulating device；10- pedestal；11- fexible film；12- test specimen；
13- pressure head.
Specific embodiment
In conjunction with shown in Fig. 1 to Fig. 3, a kind of water oil isolated form immersion triaxial test case provided by the invention and test method
Specific embodiment is as follows.
A kind of water oil isolated form immersion triaxial test case specifically includes submurged pressure cabin 1, hydraulic cargo tank 2, heater 3, pressure
Force snesor 4, temperature sensor 5, seepage channel 6, refrigerating plant 7, hydraulic pressure control device 8 and seepage flow regulating device 9, chamber
Each section can be freely disassembled, and decomposition is easy to assembly, and each component of device also has many advantages, such as that cleaning replacement is flexible.Heater 3 is set
It sets in submurged pressure cabin 1, refrigerating plant 7 is arranged outside hydraulic cargo tank 2, thus realize the heating and refrigeration to test specimen, simulation
The influence of frost and thawing to test specimen under the conditions of the immersion of engineering in practice.Pressure sensor 4 is arranged on pedestal 10, immersion
Pressure chamber 1 is arranged in hydraulic cargo tank 2, fexible film 11 is provided between submurged pressure cabin 1 and hydraulic cargo tank 2, to realize
The isolation of water oil and pressure transmitting.Fexible film 11 is fully wrapped around by test specimen, and the top edge of fexible film 11 is fixed on submurged pressure
On the shell on cabin top, the lower edge of fexible film 11 is fixed on the base.Further certifiable test specimen 12 and fexible film
The distance between 11 between 3~10cm, guarantee fexible film 11 in the axial direction there are certain surplus, fexible film 11 it is upper
Edge and lower edge can be set as the structure with concave edge or chimb according to demand, to guarantee that fexible film 11 transmits pressure
Stablize.Fexible film can be made of nanometer force-sensitive material, while can monitor pressure distribution；Fexible film can also use
High-performance polyester film can bear bigger pressure；Fexible film can also select the materials such as silica gel to make.Seepage channel 6
It is arranged on pedestal 10, seepage channel 6 is connected to submurged pressure cabin 1 and seepage flow regulating device 9, is provided with pressure in seepage channel 6
Balanced valve, seepage flow regulating device 9 can guarantee that the pressure in submurged pressure cabin 1 and hydraulic cargo tank 2 are protected in hydraulic 2 pressure process of cargo tank
It holds consistent, water-filling always is kept in submurged pressure cabin by equilibrated valve and stabilized pressure pump.Hydraulic pressure control device 8 and hydraulic oil
Cabin 2 is connected by oil pipe, directional control valve is provided on oil pipe, by hydraulic pressure control device 8 by adjusting in hydraulic cargo tank 2
The oil pressure in hydraulic cargo tank 2 is adjusted in oil liquid content, to change confining pressure, confining pressure is unloaded in the speed change of adjustment disengaging oil
Rate.
Hydraulic cargo tank 2 and the shell in submurged pressure cabin 1 are made by transparent toughened glass, to facilitate observation.Pressure head
13 can be set to guarantee that test specimen integrally soaks in submurged pressure cabin 1, thus preferably rock in the case of simulative immersion
Mechanical property.According to test structure demand, temperature sensor 5 is arranged in submurged pressure cabin, and temperature sensor 5 can be pressure resistance
Type temperature sensor, pressure sensor 4 can be water proof type pressure sensor, to guarantee the durability of sensor and accurate
Property.Equilibrated valve is specially high-pressure balanced valve, and directional control valve is specially high pressure directional control valve, due to pressure process
Middle pressure is higher, so needing using high pressure valve.Stabilized pressure pump is provided in seepage flow regulating device 9,1 edge of submurged pressure cabin is also
It is provided with pressure gauge, safety valve is additionally provided on oil pipe, pressure gauge, which is arranged, in submurged pressure cabin 1 can further calibrate enclosing for test specimen
Pressure guarantees the accuracy of loading accuracy and test result.
It can be tested as follows using above-mentioned water oil isolated form immersion triaxial test case.
1. a kind of method for the uniaxial test that soaks, is tested using above-mentioned water oil isolated form immersion triaxial test case,
Test procedure includes:
Step 1 prepares test specimen 12, and test specimen 12 can use the ore fetched from scene and carry out processing and fabricating standard specimen,
Or the production of the standard specimens such as coal is carried out using similar proportion, test specimen is placed on to the leaching of water oil isolated form immersion triaxial test case
In water pressure cabin 1, water is injected in submurged pressure cabin 1, and control water filling after test specimen 12 flood height, simulate different operating conditions
The influence that test specimen 12 soaks to mechanical property.
Step 2 carries out axial pressure using the pressure head 13 of testing machine, until test specimen 12 destroys, may be used also in this process
To carry out circulation water-filling and water-discharging to submurged pressure cabin 1, so that simulation immersion completely shows with alternate drying and watering cycle is drained completely
As, while the stress and strain monitoring data of test specimen are recorded, make the stress-strain diagram of the test specimen.
2. a kind of method for triaxial test of soaking, is tested using above-mentioned water oil isolated form immersion triaxial test case,
Test procedure includes:
Step 1 prepares test specimen 12 using field sampling or analog material, and test specimen 12 is placed on the immersion of water oil isolated form
In the submurged pressure cabin 1 of triaxial test case, water is filled in submurged pressure cabin 1, until flooding test specimen 12 completely.
Step 2 carries out axial application prestressing force, and the 2 injection hydraulic oil into hydraulic cargo tank using the pressure head 13 of testing machine
Pressure is kept to stablize, the setting of oil pressure is pressurizeed as needed, passed in pressure process according to pressure on pressure gauge and pedestal 10
Sensor 4 monitors pressure.
The pressure head 13 that step 3 continues with testing machine carries out axial pressure, during which observes test piece deformation situation, until examination
Part 12 destroys, this can also carry out circulating frozen and defrosting using refrigerating plant 7 and heater 3 in the process, record test specimen 12
Stress and strain monitoring data make the stress-strain diagram of the test specimen.
3. the method that a kind of three axis of immersion unload confining pressure test is tried using above-mentioned water oil isolated form immersion triaxial test case
It tests, test procedure includes:
Step 1 prepares test specimen 12, test specimen is placed in the submurged pressure cabin of water oil isolated form immersion triaxial test case,
Water is filled in submurged pressure cabin, floods test specimen completely.
Step 2 carries out axial application prestressing force using the pressure head 13 of testing machine, and gradually injects liquid into hydraulic cargo tank 2
Pressure oil persistently increases the pressure of hydraulic oil in hydraulic cargo tank 1 to confining pressure value, monitors the pressure value in submurged pressure cabin.
The rate of step 3 adjustment unloading confining pressure, can also be carried out in the process using refrigerating plant 7 and heater 3
Circulating frozen and defrosting, and the stress and strain monitoring data of test specimen 12 are recorded, make the stress-strain diagram of the test specimen 12.
4. a kind of method for mining influence triaxial test of soaking, is carried out using above-mentioned water oil isolated form immersion triaxial test case
Test, test procedure include:
Step 1 prepares test specimen 12 using field sampling or analog material, and test specimen 12 is placed on the immersion of water oil isolated form
In the submurged pressure cabin 1 of triaxial test case, water is filled in submurged pressure cabin 1, floods test specimen completely.
Step 2 carries out axial application prestressing force using the pressure head 13 of testing machine, and gradually injects liquid into hydraulic cargo tank 2
Pressure oil persistently increases the pressure of 2 hydraulic oil in hydraulic cargo tank to confining pressure value, and the pressure value for monitoring submurged pressure cabin 1 is calibrated.
Step 3 by hydraulic pressure control device 8 adjust release hydraulic oil disengaging speed, adjustment unloading confining pressure rate and
The rate of axial pressure persistently increases the pressure of hydraulic oil in hydraulic cargo tank 2 to confining pressure value；Axial pressure is carried out simultaneously until examination
Part 12 destroys, and monitors the pressure value in submurged pressure cabin 1；Record the stress and strain monitoring data of test specimen 12.
In addition, the method, the method for triaxial test of soaking, three axis of immersion in above-mentioned immersion uniaxial test unload confining pressure test
Acid solution can also be also injected in submurged pressure cabin 1 in the method for method and immersion mining influence triaxial test or alkalinity is molten
Liquid records the stress and strain monitoring data of test specimen 12 under corrosion condition, and then studies rock in the case of different reagents soak
Mechanical property simulates operating condition under corrosion working conditions.It in addition, can also be by filling refrigeration during above-mentioned test method
7 work freezing test specimen is set, records the stress and strain monitoring data of test specimen in freeze-up situation, or the refrigerating plant 7 is cold
After freezing test specimen, heater 3 works defrosting test specimen, and circulating frozen and course of defrosting record test specimen under circulating frozen thawing condition
Stress and strain monitoring data, thus simulation loop freezing and thaw operating condition under rock mechanical property.It is isolated using water oil
The triaxial tests case that soaks carries out triaxial test, can realize in mechanical test loading procedure and soak for a long time to controllable confining pressure
Rock sample in the case of water is loaded directly into, and is analyzed according to experimental result and Practical Project situation, to be similar
Operating condition provides more scientific and reasonable construction reference.Fastening rubber band can also be used to tighten 12 He of test specimen in the method for above-mentioned test
Fexible film 11 is on the top in submurged pressure cabin 1 or lower part water filling thus the mechanical property of the test specimen of analog portion immersion.It utilizes
The device can also simulate the work of the different loading forms under the conditions of different temperatures, different materials, different confining pressures, different immersions
Condition tests the mechanical property of the materials such as the rock under different situations.Chemical reagent is added in submurged pressure cabin 1, and then studies
The mechanical property of rock in the case of different reagent immersions；Similarly when carrying out uniaxial compression test, the liquid level of reagent can also
It adjusts according to different needs, immersion completely can also be simulated and drains alternate drying and watering cycle phenomenon completely.
Certainly, the above description is not a limitation of the present invention, and the present invention is also not limited to the example above, this technology neck
The variations, modifications, additions or substitutions that the technical staff in domain is made within the essential scope of the present invention also should belong to of the invention
Protection scope.
Claims (9)
- The triaxial test case 1. a kind of water oil isolated form soaks, which is characterized in that including submurged pressure cabin, hydraulic cargo tank, heater, Pressure sensor, temperature sensor, seepage channel, refrigerating plant, hydraulic pressure control device and seepage flow regulating device；The heater Be arranged in submurged pressure cabin, refrigerating plant setting hydraulic oil out of my cabin；The pressure sensor is set on the base, institute It states submurged pressure cabin to be arranged in hydraulic cargo tank, is provided with fexible film between submurged pressure cabin and hydraulic cargo tank；The seepage flow Channel is set on the base, and seepage channel is connected to submurged pressure cabin and seepage flow regulating device, is provided with pressure in the seepage channel Dynamic balance valve；The hydraulic pressure control device is connected with hydraulic cargo tank by oil pipe, and directional control valve, the temperature are provided on oil pipe Sensor is spent to be arranged in submurged pressure cabin.
- The triaxial test case 2. a kind of water oil isolated form according to claim 1 soaks, which is characterized in that the hydraulic cargo tank It is made with the shell in submurged pressure cabin by transparent toughened glass, the temperature sensor is pressure resistant type temperature sensor, institute Stating pressure sensor is water proof type pressure sensor, and the equilibrated valve is specially high-pressure balanced valve, the direction control Valve processed is specially high pressure directional control valve.
- The triaxial test case 3. a kind of water oil isolated form according to claim 1 soaks, which is characterized in that the fexible film Test specimen is fully wrapped around, and the top edge of the fexible film is fixed on the shell on submurged pressure cabin top, the fexible film Lower edge be fixed on the base.
- 4. a kind of water oil isolated form immersion triaxial test case stated according to claim 3, which is characterized in that the seepage flow adjusts dress It is provided with stabilized pressure pump in setting, submurged pressure cabin edge is additionally provided with pressure gauge；Safety valve is additionally provided on the oil pipe.
- 5. a kind of method for the uniaxial test that soaks utilizes a kind of described in any item water oil isolated form immersions three of Claims 1-4 4 Shaft experiment case is tested, which is characterized in that test procedure includes:Step 1 prepares test specimen, test specimen is placed in the submurged pressure cabin of water oil isolated form immersion triaxial test case, is being soaked Water is injected in pressure chamber, and control test specimen after water filling floods height；Step 2 carries out axial pressure using the pressure head of testing machine, until test specimen destroys, while recording the stress and strain of test specimen Monitoring data.
- 6. a kind of method for triaxial test of soaking utilizes a kind of described in any item water oil isolated form immersions three of Claims 1-4 4 Shaft experiment case is tested, which is characterized in that test procedure includes:Step 1 prepares test specimen, test specimen is placed in the submurged pressure cabin of water oil isolated form immersion triaxial test case, is being soaked Water is filled in pressure chamber, floods test specimen completely；Step 2 carries out axial application prestressing force using the pressure head of testing machine, and injects hydraulic oil into hydraulic cargo tank and keep pressure Power is stablized；The pressure head that step 3 continues with testing machine carries out axial pressure, until test specimen destroys, records the stress and strain of test specimen Monitoring data.
- 7. the method that a kind of three axis of immersion unload confining pressure test, utilizes a kind of described in any item water oil isolated forms of Claims 1-4 4 Immersion triaxial test case is tested, which is characterized in that test procedure includes:Step 1 prepares test specimen, test specimen is placed in the submurged pressure cabin of water oil isolated form immersion triaxial test case, is being soaked Water is filled in pressure chamber, floods test specimen completely；Step 2 carries out axial application prestressing force using the pressure head of testing machine, and gradually injects hydraulic oil into hydraulic cargo tank, holds The continuous pressure for increasing hydraulic oil in hydraulic cargo tank monitors the pressure value in submurged pressure cabin to confining pressure value；The rate of step 3 adjustment unloading confining pressure, records the stress and strain monitoring data of test specimen.
- 8. a kind of method for mining influence triaxial test of soaking utilizes a kind of described in any item water oil isolation of Claims 1-4 4 Type immersion triaxial test case is tested, which is characterized in that test procedure includes:Step 1 prepares test specimen, test specimen is placed in the submurged pressure cabin of water oil isolated form immersion triaxial test case, is being soaked Water is filled in pressure chamber, floods test specimen completely；Step 2 carries out axial application prestressing force using the pressure head of testing machine, and gradually injects hydraulic oil into hydraulic cargo tank；The rate of step 3 adjustment unloading confining pressure and the rate of axial pressure, persistently increase the pressure of hydraulic oil in hydraulic cargo tank To confining pressure value；Axial pressure is carried out simultaneously until test specimen destruction, monitors the pressure value in submurged pressure cabin；Record test specimen stress and Strain monitoring data.
- 9. according to a kind of method for immersion mining influence triaxial test that claim 8 is stated, which is characterized in that the submurged pressure Acid solution or alkaline solution are also injected in cabin, record the stress and strain monitoring data of test specimen under corrosion condition；The refrigeration Device work freezing test specimen, records the stress and strain monitoring data of test specimen in freeze-up situation, or the refrigerating plant is cold After freezing test specimen, heater works defrosting test specimen, circulating frozen and course of defrosting, records answering for test specimen under circulating frozen thawing condition Power and strain monitoring data.
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