CN109115669A - A kind of long-term automatic measurement rock becomes the water circulation test device and method of permeability - Google Patents
A kind of long-term automatic measurement rock becomes the water circulation test device and method of permeability Download PDFInfo
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- CN109115669A CN109115669A CN201811143733.5A CN201811143733A CN109115669A CN 109115669 A CN109115669 A CN 109115669A CN 201811143733 A CN201811143733 A CN 201811143733A CN 109115669 A CN109115669 A CN 109115669A
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- 239000011435 rock Substances 0.000 title claims abstract description 84
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 62
- 238000012360 testing method Methods 0.000 title claims abstract description 53
- 230000035699 permeability Effects 0.000 title claims abstract description 28
- 230000007774 longterm Effects 0.000 title claims abstract description 23
- 238000005259 measurement Methods 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 title abstract description 9
- 239000012530 fluid Substances 0.000 claims abstract description 22
- 238000002347 injection Methods 0.000 claims abstract description 21
- 239000007924 injection Substances 0.000 claims abstract description 21
- 239000007788 liquid Substances 0.000 claims abstract description 11
- 239000010720 hydraulic oil Substances 0.000 claims description 13
- 239000002184 metal Substances 0.000 claims description 9
- 230000008859 change Effects 0.000 claims description 7
- 239000011521 glass Substances 0.000 claims description 7
- 230000008595 infiltration Effects 0.000 claims description 4
- 238000001764 infiltration Methods 0.000 claims description 4
- 238000004590 computer program Methods 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 3
- 230000004044 response Effects 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims 1
- 230000003628 erosive effect Effects 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 230000035772 mutation Effects 0.000 abstract 1
- 230000008569 process Effects 0.000 description 4
- 238000010998 test method Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000012790 confirmation Methods 0.000 description 1
- 230000003670 easy-to-clean Effects 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003204 osmotic effect Effects 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
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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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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The invention discloses water circulation test device and method that a kind of long-term automatic measurement rock becomes permeability, test device includes: rock sample clamping loading system, including rock core fastener and confining pressure control system, rock sample to be measured are placed in rock core fastener；Fluid injection and drainage system are recycled, this system controls the liquid for flowing through rock sample, and forms a circulation loop；Time switch system, this system control fluid injection and drainage system and start and close in the stipulated time, are not necessarily to operator's control on duty；Data acquisition logging system, this system include three pressure transmitters being arranged in test device, two mass sensors, a recording instrument without paper and computer.The present invention solves and can not study long-term water flow erosion effect in the prior art, and apparatus measures range is small, the case where can not being suitable for permeability mutation and the big test problem of permeability variation, while solving the technical issues of test equipment in the prior art needs tester's monitored over time, manual operation.
Description
Technical field
The present invention relates to the test of rock permeability, in particular to a kind of water that long-term automatic measurement rock becomes permeability follows
Ring test device and test method.
Background technique
Permeability refers to that under certain pressure difference, the ability that rock allows fluid from, long-term current scour can be such that rock mass seeps
Saturating rate changes.It is particularly significant to the change in long term research of rock permeability for the casualty loss for reducing erosion effect.At present
The test equipment for the measurement rock permeability deposited, needs operator's whole process on duty mostly.Test requires a large amount of each time
Time, energy and expense.The most measuring range range of instrument for the measurement rock seepage flow deposited at present is small, can not study for a long time
Water flow erosion effect caused by the big test problem of permeability variation.It is sharply mutated particularly with permeability in gushing water test
Situation is difficult to be applicable in.
Summary of the invention
Goal of the invention: being directed to the above-mentioned prior art, and the water circulation for providing a kind of long-term automatic measurement rock change permeability is surveyed
Trial assembly is set and test method, and long-term water flow erosion effect can not be studied in the prior art by solving, and apparatus measures range is small,
It can not be suitable for big variation permeability test problem, while solve test equipment in the prior art and tester's whole process is needed to supervise
The technical issues of surveying, being manually operated.
Technical solution: a kind of long-term automatic measurement rock becomes the water circulation test device of permeability, comprising:
Rock sample clamps loading system, and rock sample clamping loading system includes rock core fastener and confining pressure control system, to
Rock sample is surveyed to be placed in the rock core fastener；
Fluid injection and drainage system are recycled, the circulation fluid injection and drainage system are for injecting liquid into the rock core fastener
In, and liquid is discharged from the rock core fastener system, form a closed circuit circulatory system；
Time switch system, the time switch system start to work for controlling the circulation fluid injection and drainage system and
The time of power cut-off；
Data acquisition logging system, the data acquisition logging system is for receiving test data.
Further, the circulation fluid injection and drainage system include third sink, filter, water pump, pressure reducing valve, throttling
Valve, accumulator, the first shut-off valve, first pressure transmitter, the second shut-off valve, second pressure transmitter, check-valves, several electromagnetism
Valve, the first sink and the second sink；The third sink is sequentially connected filter, water pump, pressure reducing valve, throttling by connecting pipe
Valve, accumulator, the first shut-off valve, the first shut-off valve other end are connected with rock core fastener lower end, rock core fastener and first section
First pressure transmitter is only set between valve；Rock core fastener upper end is sequentially connected the second shut-off valve, check-valves with connecting pipe,
The output end of check-valves is divided into two-way, is connected respectively to the first solenoid valve and second solenoid valve, the first, second electromagnetic valve outlet point
The first sink, the second sink Dui Ying not be placed, second pressure transmitter is set between rock core fastener and the second shut-off valve；It is described
First sink and the second sink inner bottom respectively correspond setting the first drain solenoid valve, the second drain solenoid valve, the first draining
Solenoid valve and the second drain solenoid valve connect the water inlet of third sink by drainpipe.
Further, the confining pressure control system includes servo hydraulic oil cylinder, third shut-off valve and third pressure transmitter,
Rock core fastener is connect with servo hydraulic oil cylinder, between servo hydraulic oil cylinder and rock core fastener be arranged third pressure transmitter and
Third shut-off valve.
Further, the circulation fluid injection and drainage system further include flushometer, and the flushometer includes two floating
Sub switch, two switches are located at the upper inside wall of the first sink, the second sink, and switch connects solenoid valve control
Device is exported by the power supply that the solenoid valve controller controls each solenoid valve；When the water level in the first sink reaches setting height,
Switch starting in first sink, solenoid valve controller close the first power of electromagnetic valve and the second solenoid drain valve power supply,
Second solenoid valve power supply and the first solenoid drain valve power supply are opened simultaneously；When the water level in the second sink reaches setting height,
Switch starting in second sink, solenoid valve controller close second solenoid valve power supply and the first drain valve power supply, simultaneously
Open the first power of electromagnetic valve and the second drain solenoid valve power supply.
Further, the time switch system includes power supply and timer switch socket, the timer switch socket
Power supply is connected, the attaching plug of the water pump inserts in the timer switch socket.
Further, the data acquisition logging system includes the first mass sensor and the second mass sensor, without paper
Recorder, computer, the second sink and third sink are hung on respectively under the first mass sensor and the second mass sensor, the
One is all connected to third pressure transmitter and the first, second mass sensor with the recording instrument without paper, the paperless tests
Instrument connects computer.
Further, first sink, the second sink and third sink are all manufactured by transparent glass, the third water
There is transparent glass cover in groove top portion.
A kind of long-term automatic measurement rock becomes the water loop test mode of permeability, when being tested using water as permeating medium,
The following steps are included:
Step 1: connecting test device, check device leakproofness closes all valves, it is ensured that clean nothing in three sinks
Impurity, the injected clear water into third sink；
Step 2: the metal tube of rock sample same diameter, height being fitted into rock core fastener 34, confirmation rock core fastener envelope
Close situation；
Step 3: operating circuit is connected, by each pressure transmitter and mass sensor data access recording instrument without paper；
Step 4: opening third shut-off valve, open servo hydraulic oil cylinder, confining pressure is increased into work confining pressure；
Step 5: opening the first shut-off valve, the second shut-off valve, open water pump, provide for circulation fluid injection with drainage system dynamic
Power；
Step 6: the record by observing recording instrument without paper adjusts hydraulic pressure and stream that pressure reducing valve and throttle valve are needed
Amount obtains losing along stroke pressure for the test device under different flow in the case where no style, and draws response curve, by institute
Corresponding data are brought into computer program；
Step 7: disconnecting pump working power supply, confining pressure is down to zero, close the first shut-off valve, the second shut-off valve and third and cut
Only valve takes out metal tube；
Step 8: being packed into sample to be tested, repeat step 4-5, as needed, time switch is set, determines infiltration cycle.Change
Become confining pressure value, adjust hydraulic pressure and flow that pressure reducing valve and throttle valve are needed, waiting device completes setting task；
Step 9: step 8 is repeated under different confining pressures and hydraulic condition；
Step 10: pump working power supply is disconnected, confining pressure is down to zero, takes out sample, after being packed into metal tube pressurization, Pump Suction
Enter clear water and rinses a whole set of test device；
Step 11: closing the first shut-off valve, the second shut-off valve and third shut-off valve, test terminates.
The utility model has the advantages that the 1. present apparatus creative variations for using measurement seepage flow liquid quality instead reflects its changes in flow rate,
The measurement range of flow velocity is extended to the several times of existing instrument by this method, for the permeability extreme variations of rock mass in the case of gushing water
Research have significant advantage.
2. there is the present apparatus timing to start automatically, turn off the switch, the rock that can be carried out in the case where left unguarded seeps
Period measuring is flowed, realizes Digital Control.
3. furthermore the test permeating medium of this test device is in a head and the tail closed duct system, can recycle constantly
Carry out up to several months seepage flow test, without operator be manually operated.
4. all data of the present apparatus can automatic input recording instrument without paper, and be loaded into computer software, obtain high-precision
Data information and handle related data in real time, without observed reading and manually recorded.
Detailed description of the invention
Fig. 1 is the structural schematic diagram for the water circulation test device that a kind of long-term automatic measurement rock of the present invention becomes permeability；
Fig. 2 is operating circuit schematic diagram of the present invention.
Specific embodiment
Further explanation is done to the present invention with reference to the accompanying drawing.
As shown in Figure 1, a kind of long-term automatic measurement rock becomes the water circulation test device of permeability, including rock sample clamping adds
Loading system, circulation fluid injection and drainage system, time switch system and data acquisition logging system.Rock sample clamps loading system packet
Include rock core fastener 34, rock sample to be measured is placed in rock core fastener 34, the surrounding of rock to be measured passes through rock sample clamping load system
Servo hydraulic oil cylinder 35 in system loads confining pressure, and the both ends of the surface of rock sample to be measured load osmotic pressure by circulation fluid injection and drainage system
Difference.
Rock sample clamping loading system includes rock core fastener 34 and confining pressure control system, and rock sample to be measured is placed in core clamping
In device 34, confining pressure control system includes servo hydraulic oil cylinder 35, third shut-off valve 23 and third pressure transmitter 13, core clamping
Device is connect with servo hydraulic oil cylinder 35, and third pressure transmitter 13 and the are arranged between servo hydraulic oil cylinder 35 and rock core fastener
Three shut-off valves 23.
Circulation fluid injection and drainage system, and can be by liquid from the rock for injecting liquid into the rock core fastener 34
It is discharged in core holder system, ultimately forms a closed circuit circulatory system.Circulation fluid injection and drainage system include third sink 43,
Filter 31, water pump 32, pressure reducing valve 27, throttle valve 25, accumulator 33, the first shut-off valve 21, first pressure transmitter 11, second
Shut-off valve 22, check-valves 26, several solenoid valves, the first sink 41 and the second sink 42.The water outlet of third sink 43 passes through close
Tube sealing road is sequentially connected filter 31, water pump 32, pressure reducing valve 27, throttle valve 25, accumulator 33, the first shut-off valve 21, and first section
Only 21 output end of valve is connected with 34 lower end of rock core fastener, and first pressure is arranged between rock core fastener 34 and the first shut-off valve 21
Transmitter 11.34 upper end of rock core fastener is sequentially connected the second shut-off valve 22, check-valves 26 with connecting pipe, check-valves 26 it is defeated
Outlet is divided into two-way, is connected respectively to the first solenoid valve 28 and second solenoid valve 29, and the first, second electromagnetic valve outlet respectively corresponds
The first sink 41, the second sink 42 are placed, second pressure transmitter 12 is set between rock core fastener 34 and the second shut-off valve 22.
First sink 41 and 42 inner bottom of the second sink respectively correspond setting the first drain solenoid valve 210, the second drain solenoid valve
211, the first drain solenoid valve 210 connects the water inlet of 43 top cover of third sink with the second drain solenoid valve 211 by drainpipe.
First sink, the second sink and third sink all by transparent glass manufacture and can dismantle with it is easy to clean, watch water quality and
Replace circulating liquid.Third sink top has transparent glass cover, reduces long-term moisture evaporation to avoid percolating medium insufficient
Problem, opens that there are two water inlets on glass cover, and seepage flow liquid is facilitated to flow into third sink.
Circulation fluid injection and drainage system further include automatic flushing device, and automatic flushing device includes two switches, and two
A switch is located at the upper inside wall of the first sink 41, the second sink 42, and switch connects solenoid valve controller 54,
First solenoid valve 28, second solenoid valve 29, the first drain solenoid valve 210, second row water power magnetic are controlled by solenoid valve controller 54
The work of valve 211.When the water level in the first sink 41 reaches setting height, the switch in the first sink 41 starts, electricity
Magnetic valve controller 54 closes 28 power supply of the first solenoid valve and 211 power supply of the second solenoid drain valve, while opening second solenoid valve 29
210 power supply of power supply and the first solenoid drain valve.The first sink 41 starts to drain at this time, and the second sink 42 starts to continue to accept water
Stream.Similarly, when the water level in the second sink 42 reaches setting height, the switch in the second sink 42 starts, solenoid valve
Controller 54 closes 29 power supply of second solenoid valve and 210 power supply of the first drain valve, while opening 28 power supply of the first solenoid valve and the
Two drain solenoid valves, 211 power supply.The second sink 42 starts to drain at this time, and the first sink 41 starts to continue to accept water flow.
The time that time switch system is started to work for control loop fluid injection and drainage system with power cut-off.Timing is opened
Relationship system includes power supply and timer switch socket 53.Timer switch socket 53 connects power supply, and the attaching plug of water pump 33 connects
It is connected on timer switch socket 53, starting and shut-in time is arranged by timer switch socket 53, so that control loop is infused
Liquid and drainage system switch on and off.
Data acquisition logging system is used to receive a kind of water circulation test device of long-term automatic measurement rock change permeability
In all data.Data acquisition logging system includes the first mass sensor 37, the second mass sensor 38, recording instrument without paper
52 and computer 51, first to third pressure transmitter and two mass sensors be all connected with recording instrument without paper 52, no paper note
It records instrument 52 and connects computer.Second sink and third sink hang on the first mass sensor 37 and the second mass sensor respectively
Under 38, the first mass sensor 37, the flow test units of the first sink 41 and the first drain solenoid valve 210 composition and the first electricity
Magnet valve 28, third sink 43 do not contact；Similarly, the second mass sensor 38, the second sink 42 and the second drain solenoid valve 211
The flow test units of composition do not contact with second solenoid valve 29, third sink 43.Become by mass sensor institute's mass metering
Change is converted to water flow variation.Recording instrument without paper directly receives all transmitters and mass sensor data, and by spontaneous
Computer software synchronization process test data and drawing image, by device along stroke pressure loss relief in calculating process.
Using water as in the test of permeating medium, of the invention the specific test method is as follows:
Step 1: connecting test device, check device leakproofness closes all valves, it is ensured that clean nothing in three sinks
Impurity, the injected clear water 43 into third sink；
Step 2: the metal tube of rock sample same diameter, height being fitted into rock core fastener 34, confirms rock core fastener 34
Closure state；
Step 3: operating circuit is connected, by each pressure transmitter and mass sensor data access recording instrument without paper 52；
Step 4: opening third shut-off valve 23, open servo hydraulic oil cylinder 35, confining pressure is increased into work confining pressure；
Step 5: opening the first shut-off valve 21, the second shut-off valve 22, open diaphragm pump 32, for circulation fluid injection and drainage system
Power is provided；
Step 6: the record by observing recording instrument without paper 52 adjusts the hydraulic pressure that pressure reducing valve 27 and throttle valve 25 are needed
And flow, losing along stroke pressure for the test device under different flow is obtained in the case where no style, and draw response curve,
Corresponding data are brought into computer program；
Step 7: disconnecting 32 working power of water pump, confining pressure is down to zero, closes the first shut-off valve 21,22 and of the second shut-off valve
Third shut-off valve 23 takes out metal tube；
Step 8: being packed into sample to be tested, repeat step 4-5, as needed, time switch is set, determines infiltration cycle.Change
Become confining pressure value, adjust hydraulic pressure and flow that pressure reducing valve 27 and throttle valve 25 are needed, waiting device completes setting task；
Step 9: step 8 is repeated under different confining pressures and hydraulic condition；
Step 10: pump working power supply is disconnected, confining pressure is down to zero, takes out sample, after being packed into metal tube pressurization, Pump Suction
Enter clear water and rinse a whole set of test device, it is ensured that facilitates follow-up test without remaining landwaste in test equipment, and filter three with filter paper
The landwaste fallen in sink by erosion is convenient for test analysis；
Step 11: closing the first shut-off valve 21, the second shut-off valve 22 and third shut-off valve 23, test terminates.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (8)
1. the water circulation test device that a kind of long-term automatic measurement rock becomes permeability characterized by comprising
Rock sample clamps loading system, and the rock sample clamping loading system includes rock core fastener and confining pressure control system, rock to be measured
Sample is placed in the rock core fastener；
Fluid injection and drainage system are recycled, the circulation fluid injection and drainage system are used to inject liquid into the rock core fastener,
And liquid is discharged from the rock core fastener system, form a closed circuit circulatory system；
Time switch system, the time switch system are started to work and end for controlling the circulation fluid injection and drainage system
The time of work；
Data acquisition logging system, the data acquisition logging system is for receiving test data.
2. a kind of long-term automatic measurement rock according to claim 1 becomes the water circulation test device of permeability, feature
It is, the circulation fluid injection and drainage system include third sink, filter, water pump, pressure reducing valve, throttle valve, accumulator, first
Shut-off valve, first pressure transmitter, the second shut-off valve, second pressure transmitter, check-valves, several solenoid valves, the first sink and
Second sink；The third sink is sequentially connected filter, water pump, pressure reducing valve, throttle valve, accumulator, by connecting pipe
One shut-off valve, the first shut-off valve other end are connected with rock core fastener lower end, are arranged between rock core fastener and the first shut-off valve
First pressure transmitter；Rock core fastener upper end is sequentially connected the second shut-off valve, check-valves, the output of check-valves with connecting pipe
End is divided into two-way, is connected respectively to the first solenoid valve and second solenoid valve, and the first, second electromagnetic valve outlet respectively corresponds placement the
Second pressure transmitter is arranged in one sink, the second sink between rock core fastener and the second shut-off valve；First sink and
Two sink inner bottoms respectively correspond setting the first drain solenoid valve, the second drain solenoid valve, the first drain solenoid valve and second
The water inlet of the drainpipe alignment third sink of drain solenoid valve.
3. a kind of long-term automatic measurement rock according to claim 1 becomes the water circulation test device of permeability, feature
Be, the confining pressure control system includes servo hydraulic oil cylinder, third shut-off valve and third pressure transmitter, rock core fastener with
Servo hydraulic oil cylinder connection, is arranged third pressure transmitter and third shut-off valve between servo hydraulic oil cylinder and rock core fastener.
4. a kind of long-term automatic measurement rock according to claim 2 becomes the water circulation test device of permeability, feature
It is, the circulation fluid injection and drainage system further include flushometer, and the flushometer includes two switches, and two floating
Sub switch is located at the upper inside wall of the first sink, the second sink, and switch connects solenoid valve controller, by the electromagnetism
Valve control controls the power supply output of each solenoid valve；When the water level in the first sink reaches setting height, in the first sink
Switch starting, solenoid valve controller closes the first power of electromagnetic valve and the second solenoid drain valve power supply, while opening second
Power of electromagnetic valve and the first solenoid drain valve power supply；When the water level in the second sink reaches setting height, in the second sink
Switch starting, solenoid valve controller closes second solenoid valve power supply and the first drain valve power supply, while opening the first electromagnetism
Valve power supply and the second drain solenoid valve power supply.
5. a kind of long-term automatic measurement rock according to claim 1 to 4 becomes the water circulation test device of permeability,
It is characterized in that, the time switch system includes power supply and timer switch socket, the timer switch socket connection electricity
Source, the attaching plug of the water pump insert in the timer switch socket.
6. a kind of long-term automatic measurement rock according to claim 5 becomes the water circulation test device of permeability, feature
It is, the data acquisition logging system includes the first mass sensor and the second mass sensor, recording instrument without paper, calculating
Machine, the second sink and third sink are hung on respectively under the first mass sensor and the second mass sensor, and first to third pressure
Power transmitter and the first, second mass sensor are all connected with the recording instrument without paper, and the recording instrument without paper connection calculates
Machine.
7. a kind of long-term automatic measurement rock according to claim 5 becomes the water circulation test device of permeability, feature
It is, first sink, the second sink and third sink are all manufactured by transparent glass, and the third sink top has transparent
Glass cover.
8. the water loop test mode that a kind of long-term automatic measurement rock becomes permeability, which is characterized in that be situated between using water as infiltration
When matter is tested, comprising the following steps:
Step 1: connecting test device, check device leakproofness closes all valves, it is ensured that cleaning is without miscellaneous in three sinks
Matter, the injected clear water into third sink；
Step 2: the metal tube of rock sample same diameter, height being fitted into rock core fastener 34, confirms rock core fastener closed
Condition；
Step 3: operating circuit is connected, by each pressure transmitter and mass sensor data access recording instrument without paper；
Step 4: opening third shut-off valve, open servo hydraulic oil cylinder, confining pressure is increased into work confining pressure；
Step 5: opening the first shut-off valve, the second shut-off valve, open water pump, provide power for circulation fluid injection and drainage system；
Step 6: the record by observing recording instrument without paper adjusts hydraulic pressure and flow that pressure reducing valve and throttle valve are needed,
Losing along stroke pressure for the test device under different flow is obtained in the case where no style, and draws response curve, it will be corresponding
Data be brought into computer program；
Step 7: disconnecting pump working power supply, confining pressure is down to zero, close the first shut-off valve, the second shut-off valve and third cut-off
Valve takes out metal tube；
Step 8: being packed into sample to be tested, repeat step 4-5, as needed, time switch is set, determines infiltration cycle；Change is enclosed
Pressure value, adjusts hydraulic pressure and flow that pressure reducing valve and throttle valve are needed, and waiting device completes setting task；
Step 9: step 8 is repeated under different confining pressures and hydraulic condition；
Step 10: disconnecting pump working power supply, confining pressure is down to zero, takes out sample, after being packed into metal tube pressurization, water pump sucking is clear
Water rinses a whole set of test device；
Step 11: closing the first shut-off valve, the second shut-off valve and third shut-off valve, test terminates.
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| CN201811143733.5A CN109115669B (en) | 2018-09-29 | 2018-09-29 | Water circulation testing device and method for automatically measuring rock permeability change for long term |
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| CN201811143733.5A CN109115669B (en) | 2018-09-29 | 2018-09-29 | Water circulation testing device and method for automatically measuring rock permeability change for long term |
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| CN109115669B CN109115669B (en) | 2023-06-16 |
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| CN111337402A (en) * | 2019-11-01 | 2020-06-26 | 东华大学 | Quick testing arrangement of different thickness fiber fabric in-plane permeability |
| CN112161889A (en) * | 2020-08-28 | 2021-01-01 | 鞍钢集团北京研究院有限公司 | Device and method for testing seawater and sea ice mixture abrasion resistance of steel |
| CN113109230A (en) * | 2021-03-30 | 2021-07-13 | 中国电建集团西北勘测设计研究院有限公司 | Novel earth and rockfill dam construction material seepage deformation test system and method |
| CN113533169A (en) * | 2021-07-28 | 2021-10-22 | 长江水利委员会长江科学院 | Underground water seal oil cave depot surrounding rock wall infiltration collection device |
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| CN112161889A (en) * | 2020-08-28 | 2021-01-01 | 鞍钢集团北京研究院有限公司 | Device and method for testing seawater and sea ice mixture abrasion resistance of steel |
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| CN113533169A (en) * | 2021-07-28 | 2021-10-22 | 长江水利委员会长江科学院 | Underground water seal oil cave depot surrounding rock wall infiltration collection device |
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