CN106932280A - A kind of deep original position coal petrography confined pressure loading chambers - Google Patents
A kind of deep original position coal petrography confined pressure loading chambers Download PDFInfo
- Publication number
- CN106932280A CN106932280A CN201710347000.2A CN201710347000A CN106932280A CN 106932280 A CN106932280 A CN 106932280A CN 201710347000 A CN201710347000 A CN 201710347000A CN 106932280 A CN106932280 A CN 106932280A
- Authority
- CN
- China
- Prior art keywords
- coal petrography
- confined pressure
- original position
- sample
- deep
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000003245 coal Substances 0.000 title claims abstract description 97
- 239000000463 material Substances 0.000 claims abstract description 21
- 238000012360 testing method Methods 0.000 claims abstract description 16
- 238000002474 experimental method Methods 0.000 abstract description 23
- 230000006835 compression Effects 0.000 abstract 1
- 238000007906 compression Methods 0.000 abstract 1
- 239000000523 sample Substances 0.000 description 48
- 229920006351 engineering plastic Polymers 0.000 description 11
- 239000010720 hydraulic oil Substances 0.000 description 7
- 238000007789 sealing Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 239000008393 encapsulating agent Substances 0.000 description 5
- 239000003921 oil Substances 0.000 description 5
- 239000011435 rock Substances 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 238000011065 in-situ storage Methods 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 239000003566 sealing material Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 206010015866 Extravasation Diseases 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000012669 compression test Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000036251 extravasation Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 238000004826 seaming Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Classifications
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The present invention relates to coal petrography testing field, more particularly to deep original position coal petrography confined pressure testing field.By a kind of deep original position coal petrography confined pressure loading chambers of the invention, this cavity uses and same powdered lab material is filled outside coal petrography sample to be measured, now the extraneous confined pressure for applying does not act directly on coal petrography specimen surface to be measured, but act in the experiment material of filling, ensure that there is identical physical parameter between the two on mechanics, solve the problems, such as that original confined pressure medium is inconsistent with tested coal petrography material compression, it is ensured that tested coal petrography sample is consistent with deep home state stress.
Description
Technical field
The present invention relates to coal petrography testing field, more particularly to deep original position coal petrography testing field.
Background technology
As coal industry, the exploitation of long-term safety stabilization can be realized, in particular for deeper coal seam is buried, just must
Various index tests must be carried out to the coal seam to be exploited and failure mechanism is studied.
In order to solve the above problems, the method that current people use is：Target coal seam test block to be measured is taken out, according to test
Index processes experimental sample, and the profile of sample generally uses cylinder specimen.When using cylindrical sample, using confined pressure
Axially loaded equipment, the operation principle of this kind of equipment be exactly in one layer of engineering plastics of the cylindrical sample outer wrap for processing,
The purpose of this plastics is sought to separate sample with extraneous loaded medium, and loaded medium is typically pressurizeed from hydraulic oil, is led to
Cross and apply different confined pressure pressure, you can simulation different coal depth.
Based on above-mentioned experimental technique, in experimentation, it is test for around coal petrography sample, is not tested coal petrography sample material
Material, but a kind of relatively thin engineering plastics, when coal petrography sample carries out axially loaded, due to the liquid being applied on the outside of engineering plastics
Force feed is incompressible, and it can only be changed by the external world and maintain to test required pressure, it is impossible to realize that coal petrography sample is locally moulded
Deformation, there is very big difference in this with the actual forced status of coal petrography.The adjacent material of true coal petrography, because inside is present respectively
Species diversity, and geologic reason, the pressure that distal end applies remain unchanged substantially, when local coal petrography is subject to external disturbance,
Disturbed coal petrography first influences the coal petrography part around it, it is contemplated that coal petrography is discontinuous media, is gradually carried out in its inside
Absorb, after coal petrography is subject to a constant load, its stress and deformation is a process gradually transmitted and discharge, to distal end stress
Deformation effect is smaller.According to existing experiment model, there is no identical experiment material outside tested coal petrography sample, lack energy suction
, there is gap in the process of receipts, it is impossible to realize deep original position coal petrography confined pressure loading procedure with actual conditions.
The content of the invention
For above-mentioned situation, the coal petrography confined pressure loading of deep original position is realized, be tested coal petrography sample outside according to other materials
After material parcel, then apply confined pressure pressure, had differences with actual loading situation, it is closely knit that it can not solve coal petrography sample periphery hole
The pressure change of generation, and coal petrography sample is when axially loaded, the INTERACTION PROBLEMS that coal petrography specimen surface is produced with periphery,
So, it is impossible to realize deep original position coal petrography sample confined pressure loading problem.It is in situ we have invented a kind of deep to solve this problem
Coal petrography confined pressure loading chambers, the core of this cavity is exactly to change tested coal petrography sample outer surface material into same coal petrography
Material, so, when confined pressure loading experiment is carried out, it is ensured that exist between measured material and periphery material and interact, with coal petrography
Original stressing conditions are identical, thereby ensure that coal petrography sample carry out confined pressure it is axially loaded when, it is identical with original case.
What the present invention was realized in：
A kind of deep original position coal petrography confined pressure loading chambers, it is to fill same experiment outside tested coal petrography sample
Material,
In experiment, the confined pressure that the external world applies does not act directly on tested coal petrography specimen surface, but acts on filling
In experiment material, this experiment material is powdery, and identical with coal petrography sample material to be measured, therefore, two are ensure that on mechanics
There is identical physical parameter index between person, solve original confined pressure medium and deform inconsistent asking with tested coal petrography material confined pressure
Topic, because the powdery samples filled are less influencing each other between coal petrography sample, so can both ensure tested coal petrography sample with
Deep home state is consistent, while decreasing the influence that the mechanical index after being loaded to coal petrography confined pressure is determined.
Brief description of the drawings
Fig. 1 is a kind of agent structure schematic diagram of deep original position coal petrography confined pressure loading chambers of the embodiment of the present invention.
Fig. 2 is a kind of deep original position coal petrography confined pressure loading chambers upper press cover overlooking the structure diagram of the embodiment of the present invention.
The specific embodiment to cavity of the present invention is described in further detail below in conjunction with the accompanying drawings.
(1) it is coal petrography sample to be measured, (2) are the powdery samples that material identical with coal petrography sample is made, and (3) are engineering plastics
Encapsulant, isolates for powdery samples with the hydraulic oil for applying confined pressure, and (4) are the hydraulic oil cavity for applying confined pressure, (5)
It is coal petrography sample to be measured loading string lower connecting device, while for engineering plastics encapsulant plays a part of lower support, (6) are to treat
Coal petrography sample loading string positioner is surveyed, (7) are the axially loaded lower support meanss of coal petrography sample to be measured, and (8) are for applying to enclose
The hydraulic oil cavity blast pipe of pressure, (9) are blast pipe control valve, and for air emission control in high-voltage oil cavity body, (10) are to treat
The sealing between coal rock specimen and upper attachment means is surveyed, prevents powdery samples excessive upwards, (11) coal rock specimen to be measured and lower connection
Sealing between device, prevents powdery samples from overflowing downwards, and (12) are upper attachment means, there is three functions, plays push down powder first
The effect of shape sample, next plays being connected for seal between tested coal rock specimen and the external world, and the 3rd is engineering plastics sealing
Material plays a part of upper support, and (13) are the overhead platen for testing cavity, for connecting experiment shell cavity, while in compacting
Attachment means, (14) are sealing device, for the sealing between upper attachment means and experiment shell cavity, prevent the applying in cavity
The hydraulic oil extravasation of confined pressure, (15) are experiment shell cavity, and (16) are fixing bolt, for connecting experiment shell cavity and top
The connection of platen, (17) are that the pressure for determining powdery samples, (18) are connection pulverized specimen with manometric control valve
With extraneous interface channel, the extraneous monitoring passage for determining pulverized specimen pressure, (19) are connecting line, there is provided powdery
The passage of sample, for filling the space between tested coal petrography sample and engineering plastics encapsulant, (20) are connected pipes pipe
Road, the hydraulic oil that extraneous pumping source is produced is delivered in confined pressure cavity, and (21) are tested coal petrography sample and loading tester pressing disc
Between connecting rod, for transmitting xial feed, (22A) exterior part is hydraulic oil pumping source, for providing confined pressure pressure, (22B)
Exterior part, is powdery samples pump, for powdery samples are provided in cavity, (22C) exterior part to be pressure testing machine seaming chuck,
(22D) exterior part, is pressure testing machine lower platform, and (23) are loading chambers overhead platen overlooking structure figure, and (24) are to provide powder
The connecting line of shape specimen access, for providing powdery samples, (25) are connecting bolts, are consolidated with experiment cavity for upper platen
Fixed connection, (26) connecting rod, for that will transmit xial feed, (27) are connecting rod, tested coal petrography sample and upper platen and
Annular space between upper attachment means, prevents coal rock specimen and connecting rod and surrounding from being formed and contacts, (28) pulverized specimen and the external world
Interface channel, monitors for the external world.
Specific embodiment
To provide a kind of deep original position coal petrography confined pressure loading chambers, the confined pressure loading chambers can be realized core of the invention
Tested coal petrography sample is at the trial, consistent with deep home state, improves the degree of accuracy of experiment, meets survey in situ to deep coal petrography
The requirement of examination.
In order that those skilled in the art more fully understands technical scheme, it is below in conjunction with the accompanying drawings and specific real
The present invention is described in further detail for example.
Refer to Fig. 1 and Fig. 2, Fig. 1 is a kind of main body of deep original position coal petrography confined pressure loading chambers of the embodiment of the present invention
Structural representation, Fig. 2 illustrates for a kind of deep original position coal petrography confined pressure loading chambers upper press cover plan structure of the embodiment of the present invention
Figure.
The invention provides a kind of deep original position coal petrography confined pressure loading chambers, the cavity includes applying the high-voltage oil cavity of confined pressure
Body (4), powdery samples (2), powdery samples pressure test device (17) is tested coal petrography sample (1) and sample to be tested loading string
Positioner (6), confined pressure cavity (15) and confined pressure cavity overhead platen (13).In process of the test, positioner will be carried
Axially loaded lower support meanss (6) are put into experiment cavity, will be connected under coal petrography sample to be measured with engineering plastics encapsulant (3)
Device (5) is connected with upper attachment means (12), forms coal petrography sample overcoat, and connecting portion scribbles fluid sealant, by coal petrography to be measured examination
Sample (1) place coal petrography sample overcoat in, between coal rock specimen and lower connecting device place sealing ring (11), with upper attachment means it
Between place sealing ring (10), form coal petrography sample loading string, and coal petrography sample loading string is put into confined pressure experiment shell cavity
(15) in, sealing ring (14) is placed between upper attachment means outside and experiment cavity, in coal petrography sample and engineering plastics sealing material
Between material, the powdery samples (2) of material identical with coal petrography sample are put into, the height of powdery samples is slightly above engineering plastics sealing material
Material height, puts experiment cavity overhead platen (13), and with experiment cavity be connected overhead platen by blending bolt (16), for ease of even
Connect, overhead platen is fixed using 6 bolts (25), is put into connecting rod (21), the deep original position coal petrography that will can have now completed
Confined pressure loading chambers are put into axial compression test machine loading space, in order to accurate simulation deep original position stressing conditions, can root
According to used geologic information is tested, continue to add powdery samples by connecting line (19) and extraneous pump, open powdery samples
With external world's monitoring passage (18), behind the space in emptying powdery samples chamber, stop addition powdery samples, into powdery samples pressure
Monitoring state, opens cavity blast pipe and controls valve (9), by the extraneous hydraulic pump for providing, to oiling in cavity, confined pressure to be applied
High-pressure chamber (4) in full of oil, after air, stop oiling, close blast pipe control valve (9), now complete all standards
Standby work, according to the selected experiment confined pressure of experiment, carry out it is axially loaded, because coal petrography sample to be measured is direct with extraneous confined pressure oil
It is connected, but is connected with measured material identical powdery samples, solves confined pressure oily different from tested coal petrography sample expansion scarce
Point, thus achieves deep original position confined pressure loading function.
At present, other confined pressure testing machines, are isolated, directly by confined pressure using confined pressure oil by engineering plastics encapsulant
It is applied on tested coal petrography sample, because both expand difference, especially for deep confined pressure situation higher, it is difficult to realize in situ
Loading.
By a kind of deep original position of the invention coal petrography confined pressure loading chambers, be tested coal petrography sample not directly with extraneous confined pressure
It is connected, but is connected by with tested coal petrography sample identical powdery samples, by powdery samples by confined pressure pressure transmission to quilt
Coal petrography sample is surveyed, because both physical parameters are identical, so when coal petrography sample is axially compressed, what powdery samples applied
Confined pressure experimental state is identical with deep stress, thus solves deep original position confined pressure experiment problem.
Claims (3)
1. a kind of deep original position coal petrography confined pressure loading chambers, try including the filling of coal petrography sample to be measured outside and coal petrography to be measured
Sample identical powdery samples, deep original position coal petrography confined pressure loading chambers, it is technically characterized in that：This kind of deep original position coal petrography confined pressure
Loading chambers, it is ensured that coal petrography sample confined pressure stress form to be measured is identical in deep original position with it.
2. it is according to claim 1, extraneous to apply confined pressure, it is delivered on coal petrography sample to be measured by powdery samples, it is ensured that
Coal petrography sample to be measured is consistent with surrounding material.
3. according to claim 1, deep original position coal petrography confined pressure loading chambers, it is ensured that the confined pressure of coal petrography sample testing to be measured
Index is identical with deep original position confined pressure state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710347000.2A CN106932280A (en) | 2017-05-17 | 2017-05-17 | A kind of deep original position coal petrography confined pressure loading chambers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710347000.2A CN106932280A (en) | 2017-05-17 | 2017-05-17 | A kind of deep original position coal petrography confined pressure loading chambers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106932280A true CN106932280A (en) | 2017-07-07 |
Family
ID=59430229
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710347000.2A Pending CN106932280A (en) | 2017-05-17 | 2017-05-17 | A kind of deep original position coal petrography confined pressure loading chambers |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106932280A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109187203A (en) * | 2018-08-02 | 2019-01-11 | 三峡大学 | A kind of in-situ testing device and method of deep rock mass stress fidelity |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102279131A (en) * | 2011-07-18 | 2011-12-14 | 中国石油大学(北京) | Simulation experiment method of coal seam hydraulic fracture |
| CN102564847A (en) * | 2011-12-26 | 2012-07-11 | 中国矿业大学 | Triaxial test rigid loading device for rock mass |
| CN102621005A (en) * | 2012-03-30 | 2012-08-01 | 中国矿业大学(北京) | Rock soil rheological test equipment |
| CN103076230A (en) * | 2013-02-05 | 2013-05-01 | 重庆交通大学 | Test method and test device of mechanical properties of soil-structure contact surface |
| CN104215506A (en) * | 2014-09-15 | 2014-12-17 | 中国矿业大学 | Gradient confining pressure loading method |
| CN105738208A (en) * | 2016-04-25 | 2016-07-06 | 东北大学 | Device and method for testing mechanical property of rock test sample under passive restraint of gravel |
-
2017
- 2017-05-17 CN CN201710347000.2A patent/CN106932280A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102279131A (en) * | 2011-07-18 | 2011-12-14 | 中国石油大学(北京) | Simulation experiment method of coal seam hydraulic fracture |
| CN102564847A (en) * | 2011-12-26 | 2012-07-11 | 中国矿业大学 | Triaxial test rigid loading device for rock mass |
| CN102621005A (en) * | 2012-03-30 | 2012-08-01 | 中国矿业大学(北京) | Rock soil rheological test equipment |
| CN103076230A (en) * | 2013-02-05 | 2013-05-01 | 重庆交通大学 | Test method and test device of mechanical properties of soil-structure contact surface |
| CN104215506A (en) * | 2014-09-15 | 2014-12-17 | 中国矿业大学 | Gradient confining pressure loading method |
| CN105738208A (en) * | 2016-04-25 | 2016-07-06 | 东北大学 | Device and method for testing mechanical property of rock test sample under passive restraint of gravel |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109187203A (en) * | 2018-08-02 | 2019-01-11 | 三峡大学 | A kind of in-situ testing device and method of deep rock mass stress fidelity |
| CN109187203B (en) * | 2018-08-02 | 2020-09-08 | 三峡大学 | In-situ testing device and method for deep rock stress fidelity |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108106945A (en) | A kind of non-homogeneous outer crowded load testing machine of casing and casing deformation computational methods | |
| CN101122552B (en) | Reservoir casing perforation anti-crushing simulation test method and simulation test machine | |
| CN106018059A (en) | Test device and method applicable to rock and capable of realizing principal stress axis rotation | |
| CN106404557A (en) | Hollow cylinder torsional shear apparatus for rock | |
| CN106840977A (en) | Slurry filling imitation device | |
| CN107271349A (en) | A kind of rock parameter assay method under supercritical carbon dioxide saturation | |
| CN107288632B (en) | Coal-rock reservoir drainage and production water source and pressure drop path simulation device and method | |
| CN106769797A (en) | A kind of geologic structural surface stress seepage flow coupled shear theological damage | |
| CN106644318A (en) | Sealing ring sealing performance detection apparatus | |
| CN210660065U (en) | High-simulation well cementation bonding strength joint test auxiliary device | |
| CN102426142A (en) | Mechanics experiment system apparatus and experimental method for external pressure deformation of tubing | |
| CN108387499A (en) | A kind of lithologic subsurface original position multi-parameter anisotropy measurement device | |
| CN103698228A (en) | Large-scale real triaxial shear testing device and application thereof | |
| WO2021012371A1 (en) | Frameless triaxial rock test apparatus and operating method | |
| CN106644753A (en) | Hollow cylindrical rock torsional shear apparatus for improving torque application accuracy | |
| CN113607633B (en) | Device and method for measuring drag reduction performance of pipe jacking mud sleeve under axisymmetric stress condition | |
| CN106932280A (en) | A kind of deep original position coal petrography confined pressure loading chambers | |
| CN110487640A (en) | A kind of variable diameter expansion cone experimental rig | |
| CN109696324A (en) | The confining pressure experimental provision in situ of Rock And Soil in a kind of drilling of ground | |
| CN211426111U (en) | Experimental device for non-uniform confining pressure of hydraulic simulation sleeve pipe | |
| CN206270179U (en) | It is a kind of to lift the rock hollow cylinder torsional shear instrument that moment of torsion applies precision | |
| CN106053244B (en) | Salt cave storage tank farm country rock self-balancing type triaxial compression test device and test method | |
| CN110441157B (en) | Rock confining pressure loading device for laser drilling experiment | |
| CN207937193U (en) | A kind of scattered sample core holding unit | |
| CN110873665A (en) | Proppant performance testing device and proppant performance testing system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170707 |