CN107421815A - The uniaxial compression experimental provision that coal containing methane gas Rock Damage destroys - Google Patents
The uniaxial compression experimental provision that coal containing methane gas Rock Damage destroys Download PDFInfo
- Publication number
- CN107421815A CN107421815A CN201710654204.0A CN201710654204A CN107421815A CN 107421815 A CN107421815 A CN 107421815A CN 201710654204 A CN201710654204 A CN 201710654204A CN 107421815 A CN107421815 A CN 107421815A
- Authority
- CN
- China
- Prior art keywords
- pedestal
- flange
- cylinder
- coal
- upper lid
- 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 39
- 239000011435 rock Substances 0.000 title claims abstract description 29
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 24
- 230000006378 damage Effects 0.000 title claims abstract description 15
- 230000006835 compression Effects 0.000 title claims abstract description 9
- 238000007906 compression Methods 0.000 title claims abstract description 9
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 30
- 238000007789 sealing Methods 0.000 claims abstract description 7
- 238000012360 testing method Methods 0.000 abstract description 8
- 230000008901 benefit Effects 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 23
- 238000010586 diagram Methods 0.000 description 6
- 238000003795 desorption Methods 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000012546 transfer 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)
Abstract
The uniaxial compression experimental provision that a kind of coal containing methane gas Rock Damage destroys, belongs to coal petrography damage-fracture mechanics testing equipment field, includes pressure head, upper lid, cylinder, pedestal and base.It is characterized in that the pedestal for being formed with lower flange is placed on the base for being formed with flange, coal rock specimen is placed in the boss groove of pedestal upper end, the barrel jacket for being formed with lower flange is supported on above pedestal lower flange mounted in pedestal outside, its lower flange, is fixedly connected with three flanges by bolt group again；The upper lid of seal groove is formed with centre bore, its flange is fixedly connected with cylinder upper flange by bolt group；Column pressure head is arranged in cylinder cavity through upper lid, and its lower end is in contact with coal rock specimen；Four connecting holes are formed with barrel wall；Pedestal upper flange is formed with axially extending bore.Advantage is to confine pedestal, coal rock specimen and pressure head among coal petrography cylinder to maintain resistance to overturning, ensures the air-tightness of system using sealing ring, and handling property is realized by flange connection, easy to operate, practical.
Description
Technical field
The invention belongs to coal petrography damage-fracture mechanics testing equipment field, and in particular to a kind of coal containing methane gas Rock Damage is broken
Bad uniaxial compression experimental provision.
Background technology
Gas drainage under suction can effectively reduce the probability of happening of the coal mining accidents such as coal and gas prominent, gas explosion, take out simultaneously
The gas of extraction can also be used for the productions such as heating, combustion gas, electric power and sphere of life, have high application value.By preservation bar
The factors such as part, hydrogeology and coal petrography physico-mechanical properties influence, and the mine Gas-bearing Coal Seams in China are in the prevalence of low ventilative
Property, the feature of hypotonicity, high adsorption and high flow capacity Decay Rate, in primitive coalbed carrying out gas pumping is often difficult to reach
Expected Results.Practice have shown that digging operation not only results in crack evolution, insertion and the damage and destruction of coal and rock, produce simultaneously
Raw load transfer also can largely change the permeability of coal and rock with stress redistribution, make subregion coal and rock
Permeability coefficient significantly improves.Obviously, carry out targetedly gas pumping for region coal and rock and can improve gas to take out
Efficiency is adopted, helps to realize the purpose of mine safety production and economical and efficient development.Therefore, different loads and stress area are carried out
Under damage and failure and the gas migration Diffusion Law coupling analysis of coal and rock there is important scientific research value and reality to answer
Use meaning.
Experimental study is the basis of field application.Traditional coal containing methane gas rock mass breaking test surrounds single shaft more（Or three axle）
Compress mode is deployed, it is characterized in that among coal and rock is placed in into sealing test system, disposable loading destroys coal body, then enters again
Row desorption of mash gas is tested.Above-mentioned experimental procedure can reflect the gas features parameter of coal and rock after destruction completely, if but having needed
The whole coal petrography damage process for portraying coal and rock in the different Methane Diffusion stages, which then needs to scan by CT on-line synchronous, to be completed, to examination
Test place, device and funds and propose higher requirement.To find out its cause, it is that traditional coal containing methane gas rock mass compression failure experiment is deposited
It is difficult to ensure that in device air-tightness, and exists when test specimen loads and seals preferable device unless smashing sample to pieces and be otherwise difficult to take
The problem of going out.In consideration of it, exploitation is a kind of, removably coal containing methane gas rock mass uniaxial compression experimental provision, satisfaction can take out coal in real time
Rock test specimen simultaneously analyzes its damage and destruction characteristic, and then inquires into the coupling between coal petrography damage and failure degree and Methane Diffusion parameter
Relation, have become carry out laboratory correlative study crucial problem and there is an urgent need to.
The content of the invention
It is an object of the present invention to provide the uniaxial compression experimental provision that a kind of coal containing methane gas Rock Damage destroys, can effectively overcome
The defects of prior art is present.
The present invention is achieved in that as depicted in figs. 1 and 2, including pressure head 1, upper lid 2, cylinder 3, pedestal 5 and base 6,
It is characterized in that：The pedestal 5 for being formed with pedestal lower flange 5.4 is placed on above the base flange 6.3 of base 6, and coal rock specimen 4 is placed on
In the boss groove 5.2 that the upper end of pedestal 5 is formed with, then hollow cylinder 3 is sleeved on to the outside of pedestal 5, under the cylinder of the lower end of cylinder 3
Flange 3.4 is supported on pedestal lower flange 5.4, and above three ring flange is overlapped, and is fixedly connected by the first bolt group 7
Together.It is formed with centre bore on the upper lid flange 2.3 of the upper lid 2 of seal groove 2.1 and is formed with bolt connecting hole 2.2, and on cylinder 3
Bolt hole 3.1 in end flanges 3.5 is fixedly connected by the second bolt group 8；Pneumostop is installed in the seal groove of upper lid 2
Circle；The centre bore of the pressure head 1 of column through upper lid 2 is arranged in the center cavity of cylinder 3, and its lower end is in contact with coal rock specimen 4；
First, second, third, fourth connecting hole 3.31,3.32,3.33 and 3.34 is formed respectively with the barrel of cylinder 3；The upper end of pedestal 5
Axially extending bore 5.3 is formed with the pedestal upper flange 5.5 being formed with.
Advantage of the present invention and good effect are：Pneumatic sealing ring and unique pedestal by seal groove, overcome tradition
Coal containing methane gas Rock Damage breaking plant difficult sealing and sample take out the problem of difficult, and application method is simple, practical.
Brief description of the drawings
Fig. 1 is appearance schematic diagram of the present invention.
Fig. 2 is sectional view of the present invention.
Fig. 3 is the appearance schematic diagram of pressure head 1 in the present invention.
Fig. 4 is the appearance schematic diagram of upper lid 2 in the present invention.
Fig. 5 is the sectional view of upper lid 2 in the present invention.
Fig. 6 is the appearance schematic diagram of middle cylinder body 3 of the present invention.
Fig. 7 is the sectional view of middle cylinder body 3 of the present invention.
Fig. 8 is M-M faces sectional view in Fig. 7.
Fig. 9 is the appearance schematic diagram of pedestal 5 in the present invention.
Figure 10 is the sectional view of pedestal 5 in the present invention.
Figure 11 is the appearance schematic diagram of center base 6 of the present invention.
Figure 12 is implementation process sketch of the present invention.
In figure：
1 --- pressure head
2 --- upper lid
2.2 --- upper bonnet bolt hole
2.4 --- Pneumatic sealing ring
3 --- cylinder
3.2 --- cylinder lower end of the bolt hole
1.1 --- pressure head pin-and-hole
2.1 --- seal groove
2.3 --- upper lid flange
3.1 --- end bolt holes on cylinder
3.31st, 3.32,3.33,3.34 --- the connecting hole of barrel first, second, third, fourth
3.4 --- cylinder lower flange
4 --- coal rock specimen
5 --- pedestal
5.2 --- boss groove
5.4 --- pedestal lower flange
5.6 --- annular groove
6 --- base
6.2 --- base pin-and-hole
7 --- the first bolt group
A --- gas pot
C --- pressure gauge
E --- flowmeter
G --- forcing press head
I --- strain data acquisition system
K --- the second ball valve
M --- vavuum pump
3.5 --- cylinder upper flange
5.1 --- foundation bolt hole
5.3 --- axially extending bore
5.5 --- pedestal upper flange
6.1 --- bolt of lower base hole
6.3 --- base flange
8 --- the second bolt group
B --- pressure-reducing valve
D --- with reference to tank
F --- the first ball valve
H --- press bench face
Desorption of mash gas instrument is surveyed on J --- ground
L --- the 3rd ball valve.
Embodiment
As shown in figure 12, when need tested when, first by the base 6 of apparatus of the present invention by base pin-and-hole 6.2 with
Press bench face H is connected, and then pedestal 5 is placed on base flange 6.3；The standard cylinder of foil gauge will be posted
Type coal rock specimen 4 is placed in the boss groove 5.2 on pedestal 5, the axially extending bore by foil gauge feeder line from the pedestal upper flange 5.5
Exported in 5.3, and the aviation plug by being installed in the first connecting hole 3.31 on the barrel of cylinder 3 gathers with strain data
System I connections；Cylinder 3 is sleeved on the outside of pedestal 5 again, on the barrel of cylinder 3 second, third, the 4th connecting hole 3.32,
3.33rd, 3.34 pass through the hydraulic oil with ball valve respectively（Gas）Pipe is surveyed desorption of mash gas instrument J with gas pot A, vavuum pump M and ground and is connected
Connect；With the first bolt group 7 by bolt of lower base hole 6.1, foundation bolt hole 5.1 and cylinder lower end of the bolt hole 3.2 by cylinder 3, base
Seat 5 and base 6 are fixedly connected；The upper lid 2 for being provided with Pneumatic sealing ring is passed through into the second bolt group 8 and cylinder upper flange 3.5 again
Connection；Finally pressure head pin-and-hole 1.1 is connected with electro-hydraulic tension and compression servo testing machine head pin, pressure head 1 is inserted in cylinder 3, its
End face contacts with coal rock specimen 4；The stability and air-tightness of check device, are tested after system adjustment.
Claims (1)
1. the uniaxial compression experimental provision that a kind of coal containing methane gas Rock Damage destroys, including pressure head（1）, upper lid（2）, cylinder（3）、
Pedestal（5）And base（6）, it is characterized in that being formed with pedestal lower flange（5.4）Pedestal（5）It is placed on base（6）Base flange
（6.3）Above, coal rock specimen（4）It is placed on pedestal（5）The boss groove that upper end is formed with（5.2）It is interior, then by hollow cylinder（3）Set
Mounted in pedestal（5）Outside, cylinder（3）The cylinder lower flange of lower end（3.4）It is supported on pedestal lower flange（5.4）On, above-mentioned three
Individual ring flange is overlapped, and passes through the first bolt group（7）It is fixed together；Seal groove is formed with centre bore（2.1）'s
Upper lid（2）Upper lid flange（2.3）On be formed with bolt connecting hole（2.2）, with cylinder（3）Upper flanges（3.5）On bolt hole
（3.1）Pass through the second bolt group（8）It is fixedly connected；Upper lid（2）Seal groove in Pneumatic sealing ring is installed；The pressure head of column
（1）Through upper lid（2）Centre bore be arranged on cylinder（3）Center cavity in, its lower end and coal rock specimen（4）It is in contact；Cylinder
（3）Barrel on be formed respectively with first, second, third, fourth connecting hole（3.31）、（3.32）、（3.33）With（3.34）；Pedestal
（5）The pedestal upper flange that upper end is formed with（5.5）On be formed with axially extending bore（5.3）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710654204.0A CN107421815A (en) | 2017-08-03 | 2017-08-03 | The uniaxial compression experimental provision that coal containing methane gas Rock Damage destroys |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710654204.0A CN107421815A (en) | 2017-08-03 | 2017-08-03 | The uniaxial compression experimental provision that coal containing methane gas Rock Damage destroys |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107421815A true CN107421815A (en) | 2017-12-01 |
Family
ID=60437294
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710654204.0A Pending CN107421815A (en) | 2017-08-03 | 2017-08-03 | The uniaxial compression experimental provision that coal containing methane gas Rock Damage destroys |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107421815A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102252957A (en) * | 2011-04-19 | 2011-11-23 | 河南理工大学 | Experimental measurement device and method of solid-liquid conversion parameters of decompressed coal |
| CN103323328A (en) * | 2013-07-09 | 2013-09-25 | 安徽理工大学 | Gas sealing device and test method for coal rock impact test |
| CN103884822A (en) * | 2014-04-15 | 2014-06-25 | 西安科技大学 | Coal and gas outburst simulation system and method |
| CN106018059A (en) * | 2016-05-23 | 2016-10-12 | 中国矿业大学 | Test device and method applicable to rock and capable of realizing principal stress axis rotation |
| CN106442736A (en) * | 2016-12-06 | 2017-02-22 | 河南理工大学 | Test apparatus, test system and test method for measuring impact orientation indexes and acoustics features of gas-containing coal by use of uniaxial compression |
| CN106990031A (en) * | 2017-05-27 | 2017-07-28 | 辽宁工程技术大学 | Coal seam containing gas Percolation Law experimental study method under one kind vibration Excavation |
| CN207007626U (en) * | 2017-08-03 | 2018-02-13 | 太原科技大学 | The uniaxial compression experimental provision that coal containing methane gas Rock Damage destroys |
-
2017
- 2017-08-03 CN CN201710654204.0A patent/CN107421815A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102252957A (en) * | 2011-04-19 | 2011-11-23 | 河南理工大学 | Experimental measurement device and method of solid-liquid conversion parameters of decompressed coal |
| CN103323328A (en) * | 2013-07-09 | 2013-09-25 | 安徽理工大学 | Gas sealing device and test method for coal rock impact test |
| CN103884822A (en) * | 2014-04-15 | 2014-06-25 | 西安科技大学 | Coal and gas outburst simulation system and method |
| CN106018059A (en) * | 2016-05-23 | 2016-10-12 | 中国矿业大学 | Test device and method applicable to rock and capable of realizing principal stress axis rotation |
| CN106442736A (en) * | 2016-12-06 | 2017-02-22 | 河南理工大学 | Test apparatus, test system and test method for measuring impact orientation indexes and acoustics features of gas-containing coal by use of uniaxial compression |
| CN106990031A (en) * | 2017-05-27 | 2017-07-28 | 辽宁工程技术大学 | Coal seam containing gas Percolation Law experimental study method under one kind vibration Excavation |
| CN207007626U (en) * | 2017-08-03 | 2018-02-13 | 太原科技大学 | The uniaxial compression experimental provision that coal containing methane gas Rock Damage destroys |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104596909B (en) | Multidimensional adds the close coupling of unloading multiphase porous media to damage Seepage Experiment method | |
| CN106404549B (en) | A kind of supercritical carbon dioxide fracture simulation experimental provision | |
| CN108333098B (en) | Shale gas reservoir microcrack high-temperature high-pressure visual gas-water two-phase seepage experimental device | |
| CN102735547B (en) | Coal-rock hydraulic fracturing testing method under true triaxial state | |
| CN107246255B (en) | Supercritical CO2With the simulator and method of the compound fracturing coal body of hydraulic fracturing | |
| CN109236250A (en) | A kind of supercritical CO2Pressure break coal petrography enhances coal bed gas harvesting simulation experiment method and system | |
| CN104297069A (en) | Gas-containing coal hydrofracture-induced dynamic damage simulation monitoring device and method | |
| CN107870144A (en) | A kind of test device and method of coal petrography body strain crack permeability | |
| CN108709815B (en) | Experimental device and method for measuring fracture toughness of rock at low temperature | |
| CN107202736B (en) | Multifunctional hydrate characteristic test experimental device | |
| CN110306964B (en) | Hydraulic fracturing coal seam crack visualization and permeability increasing effect evaluation method | |
| CN105443081A (en) | Gas extraction equipment and method based on alternation thought | |
| CN106812523B (en) | Physical simulation device for multi-coal-bed gas well drainage and mining and experimental method thereof | |
| CN104865176A (en) | Seepage experiment system and method for gas-containing coal under action of impact load | |
| CN101216405A (en) | Coal rheology seepage flow test device | |
| CN207007626U (en) | The uniaxial compression experimental provision that coal containing methane gas Rock Damage destroys | |
| CN208537357U (en) | A kind of coal body permeability test device | |
| CN103927913B (en) | A kind of deep formation environment carbon dioxide geological stores experimental system for simulating | |
| CN104749025A (en) | Macro-micro three-axis visual pressure chamber for coal and rock | |
| CN111103198A (en) | True triaxial hydraulic fracturing experimental device with CT real-time scanning and method | |
| CN107727508A (en) | A kind of coal petrography multi- scenarios method monitoring test device | |
| CN103926479A (en) | Charge monitoring device in coal gas migration process and monitoring method thereof | |
| CN104535727A (en) | Hydraulic sand fracturing system | |
| CN114397234B (en) | True triaxial gradient stress loading seepage test device for composite coal rock mass | |
| CN110308261B (en) | Coal bed heating and CO injection2Collaborative reinforcement gas extraction simulation test method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171201 |
|
| RJ01 | Rejection of invention patent application after publication |