CN209470977U - A kind of water oil isolated form immersion triaxial test case - Google Patents
A kind of water oil isolated form immersion triaxial test case Download PDFInfo
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- CN209470977U CN209470977U CN201821950708.3U CN201821950708U CN209470977U CN 209470977 U CN209470977 U CN 209470977U CN 201821950708 U CN201821950708 U CN 201821950708U CN 209470977 U CN209470977 U CN 209470977U
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Abstract
The utility model provides a kind of water oil isolated form immersion triaxial test case, 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 utility model has many advantages, such as that structure is simple, easy to operate.
Description
Technical field
The utility model relates to rock mechanics experiment equipment technical field, three axis of immersion of especially a kind of water oil isolated form
Chamber.
Background technique
Recently as the continuous development of China's economy, the implementations such as development of the West Regions, the Belt and Road make China
Mining engineering, Tunnel Engineering, subway engineering and other underground engineerings are rapidly developed.But there are some engineerings in construction
Soft rock can be encountered, soft rock meets water and is easy softening, causes rock strength to reduce, cause huge difficulty to construction, while to work
Personnel safety produces serious influence.Therefore, the mechanical property that rock soaks for a long time in water is analyzed by Rock Mechanics Test,
Practice of construction is played an important role.
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.
Utility model content
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 utility model is provided
A kind of water oil isolated form soaks triaxial test case, and specific technical solution is 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.
Preferably, directional control valve is provided on oil pipe, the temperature sensor 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.
Preferably, equilibrated valve is specially high-pressure balanced valve, and the directional control valve is specially high pressure direction
Control valve.
It may further be preferable that fexible film is fully wrapped around by test specimen, the top edge of the fexible film is fixed on immersion
On the shell on pressure chamber top, the lower edge of the fexible film is fixed on the base.
It may further be preferable that being provided with stabilized pressure pump in seepage flow regulating device, submurged pressure cabin edge is additionally provided with
Pressure gauge；Safety valve is additionally provided on the oil pipe.
The beneficial effects of the utility model include:
(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.In addition also there is this experimental provision each section can be freely disassembled, point
De-assembly is convenient, places the advantages that test specimen replacement is convenient, and 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. 2, a kind of specific reality of water oil isolated form immersion triaxial test case provided by the utility model
It is as follows to apply mode.
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
Top 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
Stabilization.Fexible film can be made of nanometer force-sensitive material, while can monitor pressure distribution；Fexible film can also be adopted
With high-performance polyester film, bigger pressure can be born；Fexible film can also select the materials such as silica gel to make.Seepage channel
6 are arranged on pedestal 10, and seepage channel 6 is connected to submurged pressure cabin 1 and seepage flow regulating device 9, are 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 intended to limit the present invention, and the utility model is also not limited to the example above,
The variations, modifications, additions or substitutions that those skilled in the art are made in the essential scope of the utility model, are also answered
Belong to the protection scope of the utility model.
Claims (6)
- 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.
- The triaxial test case 2. a kind of water oil isolated form according to claim 1 soaks, which is characterized in that set on the oil pipe It is equipped with directional control valve, the temperature sensor is arranged in submurged pressure cabin.
- The triaxial test case 3. 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.
- The triaxial test case 4. a kind of water oil isolated form according to claim 2 soaks, which is characterized in that the pressure balance Valve is specially high-pressure balanced valve, and the directional control valve is specially high pressure directional control valve.
- The triaxial test case 5. a kind of water oil isolated form according to claim 2 or 3 soaks, which is characterized in that the flexibility Film is fully wrapped around by test specimen, and the top edge of the fexible film is fixed on the shell on submurged pressure cabin top, the flexibility The lower edge of film is fixed on the base.
- The triaxial test case 6. a kind of water oil isolated form according to claim 5 soaks, which is characterized in that the seepage flow is adjusted Stabilized pressure pump is provided in device, submurged pressure cabin edge is additionally provided with pressure gauge；Safety valve is additionally provided on the oil pipe.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821950708.3U CN209470977U (en) | 2018-11-26 | 2018-11-26 | A kind of water oil isolated form immersion triaxial test case |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821950708.3U CN209470977U (en) | 2018-11-26 | 2018-11-26 | A kind of water oil isolated form immersion triaxial test case |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109470570A (en) * | 2018-11-26 | 2019-03-15 | 山东科技大学 | A kind of water oil isolated form immersion triaxial test case and test method |
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2018
- 2018-11-26 CN CN201821950708.3U patent/CN209470977U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109470570A (en) * | 2018-11-26 | 2019-03-15 | 山东科技大学 | A kind of water oil isolated form immersion triaxial test case and test method |
| CN109470570B (en) * | 2018-11-26 | 2024-06-11 | 山东科技大学 | Water-oil isolation type soaking triaxial test box and test method |
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