CN208283233U - A kind of rock three-dimensional permeability real-time determining device - Google Patents
A kind of rock three-dimensional permeability real-time determining device Download PDFInfo
- Publication number
- CN208283233U CN208283233U CN201821009664.4U CN201821009664U CN208283233U CN 208283233 U CN208283233 U CN 208283233U CN 201821009664 U CN201821009664 U CN 201821009664U CN 208283233 U CN208283233 U CN 208283233U
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- China
- Prior art keywords
- rock
- electric resistance
- determining device
- time determining
- resistance sensor
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- 239000011435 rock Substances 0.000 title claims abstract description 34
- 230000035699 permeability Effects 0.000 title claims abstract description 22
- 238000006073 displacement reaction Methods 0.000 claims abstract description 10
- 238000012360 testing method Methods 0.000 claims abstract description 9
- 238000009434 installation Methods 0.000 claims description 5
- 238000012544 monitoring process Methods 0.000 claims description 5
- 239000004020 conductor Substances 0.000 claims 1
- 239000011148 porous material Substances 0.000 claims 1
- 238000009738 saturating Methods 0.000 claims 1
- 238000004088 simulation Methods 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
- 239000000523 sample Substances 0.000 description 12
- 238000005259 measurement Methods 0.000 description 8
- 238000002474 experimental method Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 229920001971 elastomer Polymers 0.000 description 6
- 239000000806 elastomer Substances 0.000 description 6
- 238000009533 lab test Methods 0.000 description 6
- 239000003245 coal Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000011888 foil Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 230000000153 supplemental effect Effects 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000005325 percolation Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model discloses a kind of rock three-dimensional permeability real-time determining device, which includes elasticity modulus, electric resistance sensor, pressure loader, Multipurpose Data Acquisition Instrument.It is square that rock sample, which is pre-machined, and each end face processing is smooth, avoids generating additional stress and stress is concentrated, and test specimen is dried after processing is completed, makes in its surface and hole without Free water.The elasticity modulus, electric resistance sensor are placed in pressure loader simultaneously, wherein when installing electric resistance sensor need that relief spring is installed, avoid the excessive damage sensor of stress, and connect with the Multipurpose Data Acquisition Instrument by conducting wire.Displacement, resistance data situation of change in conjunction with rock sample, can analyze permeability variation situation, to instruct the construction of underground geotechnical engineering safety and efficiently producing to provide technical support.
Description
Technical field
The utility model relates to a kind of measurements of petrophysical parameter, real for rock three-dimensional permeability more particularly to one kind
When measurement device.
Background technique
With the promotion of theory and technology level, the underground engineerings such as coal mining, tunnel excavation obtain tremendous development.Coal and rock
Mechanics parameter and the mensuration means of physical parameter be also developed, various experimental facilities emerge one after another, and experiment condition is also
Great improvement has been arrived, various scenes has been carried out and laboratory experiment is also relatively convenient.The permeability determination of desk research rock at present
Ambient stress based on uniaxial or false triaxial compressions, by laboratory experiment data analytically lower percolation law, and be based on not
Measurement with rock three-dimensional permeability under stress path is fewer and fewer, is on the one hand the limitation of experimental facilities, on the other hand has
The missing of the measuring method means of effect.The measurement experiment for carrying out three-dimensional permeability under different stress paths can be very good to reflect
Infiltration situation during coal mining in methane control and underground rock project, for explore underground engineering in coal and rock it is true
Seepage flow situation provides important theoretical basis.Therefore study of rocks three-dimensional permeability real-time determining device and method are to guidance ground
The safety in production of lower engineering has remarkable effect.
Utility model content
Effectively to restore the true ambient stress of rock by laboratory test, and the three-dimensional permeability of rock is measured, this
Invention provides a kind of rock three-dimensional permeability real-time determining device and method, by true triaxial test machine to different stress paths
Under rock three-dimensional permeability carry out real-time monitoring.
To achieve the goals above, the technical scheme adopted by the invention is that: a kind of rock three-dimensional permeability the real time measure
Device, the device include elasticity modulus, electric resistance sensor, pressure loader, Multipurpose Data Acquisition Instrument.
The measuring method is based on laboratory experiment, using rock true triaxial test machine as loading device, to realize difference
The load of stress path.
The elasticity modulus is experiment special high-accuracy resistance-strain chip extensometer, and front end is displacement measurement spy
Head, gauge length: 30mm, range: 5mm.Extensometer is mainly made of cutting edge, spring clip, support arm and elastomer.It is posted on elastomer
One group of resistance strain gage and composition full-bridge.When testing progress, extensometer cutting edge generates relative displacement with the deformation of sample, from
And elastomer is caused to be deformed, lead to the foil gauge output skew signal for forming full-bridge.With the external multi-functional number of conducting wire connection
It is common to complete displacement deformation monitoring according to Acquisition Instrument.
The electric resistance sensor is the measuring probe in four-point probe measurment device, and resistance: 0.010~50.00k Ω is differentiated
0.001~10 Ω of rate, resistivity: 0.010~20.00k Ω * cm, 0.001~10 Ω * cm of resolution ratio.The pressure is mounted on to add
It carries in device, comes into full contact with rock sample, connect by conducting wire with the Multipurpose Data Acquisition Instrument.
The stress loading device is each parameter measurement auxiliary device of rock sample, intermediate pre- having a size of 100*100*50mm
It makes corresponding elasticity modulus, electric resistance sensor installation space and connect external channel with conducting wire.
The Multipurpose Data Acquisition Instrument is made of reading display portion, each supplemental characteristic channel USB interface.
The advantages of the utility model, is with effect:
Difference stress path described in the utility model, is realized by true triaxial test machine.It can not only maximumlly realize
The validity and authenticity of laboratory experiment, and realize a tractor serves several purposes, in the case where not having Seepage Experiment equipment, equally may be used
To carry out the measurement of Penetration Signature.
The utility model is indoor experimental apparatus, though it is authentic and valid not as good as scene experiment in situ, it can be anti-to the greatest extent
Rock physics mechanical characteristics situation of change under different stress paths is reflected, method simple possible, experiment effect is good, and avoids big
Various errors brought by type experimental facilities test strong operability, rationally economical.
The utility model structure is simple, easy to operate, can carry out three-dimensional permeability monitoring simultaneously, and can really reflect and adopt
Dynamic stress and deformation can produce for underground geotechnical engineering and provide accurate experimental data.Its is compact-sized, cost
Lower, data are accurate, and use scope is wide, have wide applicability.
Detailed description of the invention
Fig. 1 is the general construction schematic three dimensional views of the utility model；
Fig. 2 is the two-dimensional representation of the utility model.
Fig. 3 is the electric resistance sensor scheme of installation of the utility model.
In figure: 1, elasticity modulus, 2, electric resistance sensor, 3, pressure loader, 4, Multipurpose Data Acquisition Instrument, 5, lead
Line, 6, spring, 7, rock sample.
Specific embodiment
Shown example elaborates to the utility model with reference to the accompanying drawing.
As shown in Figure 1 and Figure 2, a kind of rock three-dimensional permeability real-time determining device is mainly passed by elasticity modulus 1, resistance
Sensor 2, pressure loader 3, Multipurpose Data Acquisition Instrument 4, conducting wire 5 and spring 6.
The measuring method is based on laboratory experiment, using rock true triaxial test machine as loading device, to realize difference
The load of stress path.The elasticity modulus 1 is experiment special high-accuracy resistance-strain chip extensometer, and front end is displacement
Measuring probe, gauge length: 30mm, range: 5mm.Extensometer is mainly made of cutting edge, spring clip, support arm and elastomer.In elastomer
On post one group of resistance strain gage and composition full-bridge.When testing progress, extensometer cutting edge generates relatively with the deformation of sample
Displacement, causes elastomer to be also deformed, forms the foil gauge i.e. output skew signal of full-bridge.It is external multi-functional with conducting wire connection
Data collecting instrument 4, it is common to complete displacement deformation monitoring.The electric resistance sensor 2 is the measuring probe in four-point probe measurment device,
Resistance: 0.010~50.00k Ω, 0.001~10 Ω of resolution ratio, resistivity: 0.010~20.00k Ω * cm, resolution ratio 0.001
~10 Ω * cm.It is mounted in the pressure loader, is come into full contact with rock sample 7, pass through conducting wire 5 and the multi-functional number
It is connected according to Acquisition Instrument 4.The stress loading device 3 is each parameter measurement auxiliary device of rock sample 7, having a size of 100*100*
50mm, the corresponding elasticity modulus 1 of intermediate prefabricated, 2 installation space of electric resistance sensor connect external channel with conducting wire 5.It is described more
Performance data Acquisition Instrument 4 is to be made of reading display portion, each supplemental characteristic channel USB interface.
Claims (5)
1. a kind of rock three-dimensional permeability real-time determining device, it is characterised in that: by elasticity modulus 1, electric resistance sensor 2, pressure
Power loader 3, Multipurpose Data Acquisition Instrument 4, conducting wire 5 and spring 6 form, and wherein elasticity modulus 1 and electric resistance sensor 2 are installed
In pressure loader 3, displacement is transmitted to external Multipurpose Data Acquisition Instrument 4 by conducting wire 6 with resistance data, passes through true triaxial
The different stress paths of testing machine simulation rock load, permeability is characterized with the variation of resistivity, and accomplishes that rock three-dimensional is seeped
The real time measure of saturating rate.
2. a kind of rock three-dimensional permeability real-time determining device according to claim 1, it is characterised in that: pressure loader
3 design, the external reserved channel of installation space and corresponding conducting wire 5 including elasticity modulus 1 and electric resistance sensor 2.
3. a kind of rock three-dimensional permeability real-time determining device according to claim 1, it is characterised in that: in reserved space
Interior installation relief spring 6, to reduce the contact stress generated when electric resistance sensor 2 is mounted on pressure loader 3.
4. a kind of rock three-dimensional permeability real-time determining device according to claim 1, it is characterised in that: extended with displacement
The displacement of 1 monitoring rock sample 7 of meter, and then reflect the variation of pore structure, to embody the substantive characteristics of permeability variation.
5. a kind of rock three-dimensional permeability real-time determining device according to claim 1, it is characterised in that: multi-functional data
Acquisition Instrument 4 is made of reading display portion, data conductor interface, it can be achieved that multiple key parameters in one apparatus while being supervised
It surveys.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821009664.4U CN208283233U (en) | 2018-06-28 | 2018-06-28 | A kind of rock three-dimensional permeability real-time determining device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821009664.4U CN208283233U (en) | 2018-06-28 | 2018-06-28 | A kind of rock three-dimensional permeability real-time determining device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208283233U true CN208283233U (en) | 2018-12-25 |
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ID=64704819
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821009664.4U Expired - Fee Related CN208283233U (en) | 2018-06-28 | 2018-06-28 | A kind of rock three-dimensional permeability real-time determining device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208283233U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108593525A (en) * | 2018-06-28 | 2018-09-28 | 中国矿业大学(北京) | A kind of rock three-dimensional permeability real-time determining device and method |
-
2018
- 2018-06-28 CN CN201821009664.4U patent/CN208283233U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108593525A (en) * | 2018-06-28 | 2018-09-28 | 中国矿业大学(北京) | A kind of rock three-dimensional permeability real-time determining device and method |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181225 Termination date: 20200628 |
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| CF01 | Termination of patent right due to non-payment of annual fee |