CN103994912B - A kind of immersion method keeping coal sample structural intergrity - Google Patents
A kind of immersion method keeping coal sample structural intergrity Download PDFInfo
- Publication number
- CN103994912B CN103994912B CN201410200568.8A CN201410200568A CN103994912B CN 103994912 B CN103994912 B CN 103994912B CN 201410200568 A CN201410200568 A CN 201410200568A CN 103994912 B CN103994912 B CN 103994912B
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- China
- Prior art keywords
- coal sample
- seal box
- permeable
- dividing plate
- humidifier
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- 239000003245 coal Substances 0.000 title claims abstract description 76
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000007654 immersion Methods 0.000 title claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 30
- 230000001105 regulatory effect Effects 0.000 claims abstract description 6
- 230000003750 conditioning effect Effects 0.000 claims abstract description 5
- 238000005192 partition Methods 0.000 claims abstract description 4
- 239000007921 spray Substances 0.000 claims abstract description 4
- 239000000523 sample Substances 0.000 abstract description 49
- 230000000694 effects Effects 0.000 abstract description 7
- 230000003313 weakening effect Effects 0.000 abstract description 4
- 238000011160 research Methods 0.000 description 5
- 239000011435 rock Substances 0.000 description 5
- 238000012360 testing method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 208000010392 Bone Fractures Diseases 0.000 description 1
- 206010017076 Fracture Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
Landscapes
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
- Solid Fuels And Fuel-Associated Substances (AREA)
Abstract
The invention discloses a kind of immersion method keeping coal sample structural intergrity, coal sample be placed in the seal box with permeable dividing plate of the bottom, coal sample is distributed on dividing plate, and seal box is connected with the fog outlet of humidifier by plastic hose.The ultramicron that humidifier atomizes water into enters in seal box with constant speed by plastic hose, the spray rate of humidifier is controlled by the power regulating knob of conditioning moisturer, reading according to seal box humidity table is in humidity constant state in determining case, ultramicron is penetrated into inside coal sample uniformly by the surface of coal sample, unnecessary moisture can be flowed to the bottom of permeable dividing plate by the permeable hole of permeable dividing plate, permeable the lower partition is had more than needed certain space, and coal sample structure can keep complete.To coal sample humidification uniformly, humidity can control the method, convenient to use.Prepared by different water cut coal sample for laboratory and probes into coal petrography weakening strength rule under water effect and have important practical significance.
Description
Technical field
The present invention relates to a kind of immersion method keeping coal sample structural intergrity, it is adaptable to the laboratory treatment of different water cut coal sample,
Coal mass strength under water effect can be probed into further and weaken rule.
Background technology
The effect of water and coal petrography is one of focus and difficult point of current Engineering Rock Mechanics research.Under water body, under water-bearing layer, hold
Pressure water-bearing layer on or water conductive fault near digging time, for preventing surface water or subsoil water from bursting into job site, need to reserve a fixed width
Coal (rock) layer of degree or height is not adopted, as waterproof coal (rock) post.The intensity of coal column intensity and coal petrography test block is by
Basis during Coal Pillar Design and key.Therefore, probing into coal petrography weakening strength rule under water effect can be that Impermeable basement stability is ground
Offer base reference is provided.Numerous studies are based only on what a certain coal sample was carried out in the case of dry and full water the most both at home and abroad, and
Research for different coal sample coal petrography mechanical characteristics in unsaturated regime is relatively fewer.Therefore in the case of research different water cut
Coal rock strength feature, probes into the coal rock strength Changing Pattern with moisture content, to our more preferable research down-hole water proof coal petrography post
Long-time stability provide theoretical foundation.When carrying out coal mass strength and testing with the Changing Pattern of moisture content, traditional method is direct
Coal sample being immersed directly in water, owing to experiment coal sample volume is little, the space of coal body itself, characteristics of fracture development in addition, time long
After between, coal sample easily reaches saturated swelling state, causes the integrally-built damage of coal sample.The present invention uses one can keep coal
The immersion method that spline structure is complete, is placed on coal sample in the seal box with permeable dividing plate of the bottom, and coal sample is distributed on dividing plate,
Seal box is connected with the fog outlet of humidifier by plastic hose.Humidifier is controlled by the power regulating knob of conditioning moisturer
Spray rate, be in humidity constant state in determining case according to the reading of seal box humidity table, the ultra micro that humidifier atomizes water into
Particle is entered in seal box by plastic hose with constant speed, and ultramicron is penetrated into inside coal sample uniformly by the surface of coal sample,
Coal sample structure can keep complete.This plays important basic role for probing into coal petrography weakening strength rule under water effect.
Summary of the invention
The invention provides a kind of immersion method keeping lithostructure integrity, it is adaptable at the laboratory of different water cut coal sample
Reason, plays important basic role to probing into coal mass strength reduction rule under water effect.Research to water-coal petrography mechanical characteristic also can
Play excellent basis reference value.
The technology of the present invention content is as follows:
A. coal sample being placed in the seal box with permeable dividing plate of the bottom, coal sample is distributed on dividing plate, and seal box is soft by plastic cement
Pipe is connected with the fog outlet of humidifier.
B. the spray rate of humidifier is controlled by the power regulating knob of conditioning moisturer, according to the reading of seal box humidity table
Being in humidity constant state in determining case, the ultramicron that humidifier atomizes water into enters sealing with constant speed by plastic hose
In case, ultramicron is penetrated into inside coal sample uniformly by the surface of coal sample, and unnecessary moisture can be by the permeable hole stream of permeable dividing plate
To the bottom of seal box, permeable the lower partition is had more than needed certain space, it is ensured that be not immersed directly in water bottom coal sample, coal sample structure
Can keep complete.
Beneficial effects of the present invention: the present invention solve coal sample be directly placed into for a long time in water immersion easily cause overall structure damage
Problem, by regulate air humidifier power, be in humidity constant state in determining case according to the reading of seal box humidity table,
The ultramicron atomized water into is transferred in seal box by plastic hose with constant speed, and ultramicron is by the surface of coal sample
Inside uniform infiltration coal sample, coal sample structure can keep complete, and this prepares different water cut coal sample to preparing laboratory, probes into
Under water effect, coal petrography weakening strength rule plays important basic role.To coal sample humidification uniformly, humidity can control the method, makes
With convenient and swift.
Accompanying drawing explanation
Fig. 1 is coal sample of the present invention immersion method schematic diagram
Fig. 2 is permeable dividing plate schematic diagram in seal box of the present invention
Fig. 3 is coal sample of the present invention immersion device three-dimensional simulation figure
1-humidifier；2-seal box；The permeable dividing plate of 3-；4-plastic hose；
5-power regulating knob；6-humidometer；7-fog outlet；8-coal sample；9-permeable hole.
Coal sample immersion test process
Below in conjunction with the accompanying drawings the coal sample immersion process of the present invention is further described:
A., coal sample being placed on bottom interior with the seal box (2) of permeable dividing plate (3), coal sample is distributed on permeable dividing plate (3),
Seal box is connected with the fog outlet (7) of humidifier (1) by plastic hose (4).
B. control, by the power regulating knob (5) of conditioning moisturer (1), the speed that humidifier (1) is sprayed, according to seal box
(2) reading of humidity table (6) is in humidity constant state in determining case, and the ultramicron that humidifier (1) atomizes water into is with perseverance
Fixed speed is entered in seal box (2) by plastic hose (4).Ultramicron is penetrated into coal uniformly by the surface of coal sample (8)
Inside sample, unnecessary moisture can be flowed to the bottom of seal box, permeable the lower partition by the permeable hole (9) of permeable dividing plate (3)
Certain space more than needed, it is ensured that not being immersed directly in water bottom coal sample, coal sample structure can keep complete.
Claims (3)
1. the immersion method keeping coal sample structural intergrity, it is characterised in that:
A. coal sample being placed in the seal box with permeable dividing plate, coal sample is distributed on permeable dividing plate, and seal box is connected with the fog outlet of humidifier by plastic hose；
B. the spray rate of humidifier is controlled by the power regulating knob of conditioning moisturer, reading according to seal box humidity table is in humidity constant state in guaranteeing case, the ultramicron that humidifier atomizes water into enters in seal box with constant speed by plastic hose, ultramicron is penetrated into inside coal sample uniformly by the surface of coal sample, unnecessary moisture can flow to bottom seal box by the permeable hole of permeable dividing plate, permeable the lower partition is had more than needed certain space, ensureing not to be immersed directly in water bottom coal sample, coal sample structure can keep complete.
A kind of immersion method keeping coal sample structural intergrity the most according to claim 1, it is characterised in that:
The volume of described humidifier is 4～5L, and the external diameter of fog outlet is 20～30mm, internal diameter 10～15mm.
A kind of immersion method keeping coal sample structural intergrity the most according to claim 1, it is characterised in that:
A length of the 0.5 of described plastic hose～1m, in permeable dividing plate, permeable hole is area 60～100mm2Rectangle and permeable dividing plate distance seal box bottom at least 30～40mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410200568.8A CN103994912B (en) | 2014-05-11 | 2014-05-11 | A kind of immersion method keeping coal sample structural intergrity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410200568.8A CN103994912B (en) | 2014-05-11 | 2014-05-11 | A kind of immersion method keeping coal sample structural intergrity |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103994912A CN103994912A (en) | 2014-08-20 |
| CN103994912B true CN103994912B (en) | 2016-10-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410200568.8A Expired - Fee Related CN103994912B (en) | 2014-05-11 | 2014-05-11 | A kind of immersion method keeping coal sample structural intergrity |
Country Status (1)
| Country | Link |
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| CN (1) | CN103994912B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113188868A (en) * | 2021-05-06 | 2021-07-30 | 安徽理工大学 | Coal rock nondestructive infiltration-drying circulating pretreatment device and method |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201286230Y (en) * | 2008-09-28 | 2009-08-12 | 中国农业科学院蔬菜花卉研究所 | Vegetable seeds germination box |
| CN102937540B (en) * | 2012-06-26 | 2016-03-09 | 湖南三德科技股份有限公司 | The hot blast of sampling can be automatically sent to penetrate internal-circulation type coal sample dehumidifying device |
| CN102944453A (en) * | 2012-06-26 | 2013-02-27 | 湖南三德科技发展有限公司 | Vertical rotation-type coal sample rapid dehumidification device having dynamic moisture detection function |
| CN102937539B (en) * | 2012-06-26 | 2015-10-28 | 湖南三德科技股份有限公司 | Hot blast penetrates internal-circulation type coal sample dehumidifying device |
| CN102998204B (en) * | 2012-12-20 | 2015-01-21 | 中国矿业大学 | Device and method for preparing water-containing coal sample and testing adsorption |
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- 2014-05-11 CN CN201410200568.8A patent/CN103994912B/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN103994912A (en) | 2014-08-20 |
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