CN102866050B - A kind of test material preparation method of irregular coal petrography block or easy broken coal petrography block - Google Patents
A kind of test material preparation method of irregular coal petrography block or easy broken coal petrography block Download PDFInfo
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- CN102866050B CN102866050B CN201210378957.0A CN201210378957A CN102866050B CN 102866050 B CN102866050 B CN 102866050B CN 201210378957 A CN201210378957 A CN 201210378957A CN 102866050 B CN102866050 B CN 102866050B
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- 239000003245 coal Substances 0.000 title claims abstract description 54
- 238000012360 testing method Methods 0.000 title claims abstract description 35
- 230000001788 irregular Effects 0.000 title claims abstract description 19
- 239000000463 material Substances 0.000 title claims abstract description 15
- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- 239000011435 rock Substances 0.000 claims abstract description 35
- 239000004568 cement Substances 0.000 claims abstract description 10
- 238000005553 drilling Methods 0.000 claims abstract description 10
- 239000011440 grout Substances 0.000 claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 5
- 230000001680 brushing effect Effects 0.000 claims abstract description 4
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 4
- 238000013467 fragmentation Methods 0.000 claims abstract description 4
- 238000006062 fragmentation reaction Methods 0.000 claims abstract description 4
- 238000005498 polishing Methods 0.000 claims abstract description 4
- 230000000903 blocking effect Effects 0.000 claims abstract description 3
- 238000012423 maintenance Methods 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 238000007493 shaping process Methods 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 238000004381 surface treatment Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 13
- 230000007812 deficiency Effects 0.000 abstract description 2
- 230000006378 damage Effects 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- -1 metallurgy Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Sampling And Sample Adjustment (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
A test material preparation method for irregular coal petrography block or easy broken coal petrography block, the rock mechanics test specimen being applicable to irregular, breakable coal and rock makes.Adopt commute fragmentation or out-of-shape coal petrography block surface coated with water blocking material, be placed on coal petrography block size in matched case mould, at the release agent that the even brushing one deck of case mould inside surface does not react with cement, the cement grout prepared is injected case mould, make the filling of case mould closely knit, after reaching design strength, cylindricality test specimen is drilled through with core drilling rig, then the cylindricality test specimen rock cutter excision test specimen two ends cement grout section of solidifying obtained will be drilled through, only leave coal petrography block section, then through polishing to obtain required coal rock specimen.Solve that irregular block not easily clamps, the deficiency of fractured coal and rock destructible, the test specimen processed farthest can ensure the mechanical property of raw coal rock mass.Its method is simple, and process easily operates, and cost is lower, has very strong practicality.
Description
Technical field
The present invention relates to a kind of test material preparation method, especially a kind of irregular coal petrography block or test material preparation method of easy broken coal petrography block being applicable to Geotechnical Engineering test.
Background technology
In industries such as geologic prospecting, civil construction, traffic, chemical industry, mining industry, building materials, metallurgy, water conservancy, military affairs, have many Geotechnical Engineering scientific research projects, the research of these scientific research projects all need carry out a large amount of mechanical properties of rock test in laboratory.Before doing mechanical properties of rock test, first the irregular sillar fetched from scene to be processed into the rock sample meeting national standard.Due to on-site sampling difficulty, qualified rock sample is caused to process lazy weight, cause experiment to be difficult to carry out, especially for out-of-shape or the test block processing difficulty especially holding breakable coal and rock rock sample, in process, often just cause the destruction of rock sample to damage cause the failure of an experiment.To process specification for Φ 50mm × 100mm test specimen.First sillar is placed on rock drill to live with holder, get out the cylinder of diameter 50mm, with microtome, cylindrical rock sample is cut out an end face perpendicular to axis, rock sample end face is polished on wafer lapping machine, and make the verticality of this end face and axis reach requirement, after meeting the requirements after testing, along rock cylinder axial direction apart from end face 100mm place, circumferentially rule, then cut out an end face with microtome along this line.Polish this end face, and detect the flatness of itself and the depth of parallelism of other end, the verticality of cylinder axis and end face, if meet the requirements, namely test specimen processing complete.
Coal rock specimen preparation is the essential step of rock mechanics experiment, uses above-mentioned technique can successfully process most rock sample, but for shape very irregular or little, the breakable coal petrography block of intensity, often runs into unmanageable problem.For coal petrography block in irregular shape, the fixture of rock drill is difficult to be clamped, and the effect by drill bit power in the process drilling through test block is easily movable, causes the sample obtained not reach standard, and even can cause boring rock work can not carry out; Little for intensity, breakable coal petrography block, because coal petrography block receptor site accommodates power and bit pressure, suffered external force is unbalanced, adds the effect of water, easily sustains damage and broken in the process of boring rock, can not get required test specimen.Traditional job operation is inapplicable to these two kinds of coal petrography blocks.
Summary of the invention
Technical matters: the object of the invention is the weak point overcome in prior art, the test material preparation method of the irregular coal petrography block providing a kind of method simple, easy to operate, effective or easy broken coal petrography block.
Technical scheme: the test material preparation method of irregular coal petrography block of the present invention or easy broken coal petrography block, comprises the steps:
The first step, carries out surface treatment by easy fragmentation or coal petrography block in irregular shape, at coal petrography block surface coated with water blocking material, applies complete, dries in the air and waits it solid aside;
Second step, gets the matched case mould with coal petrography block size, at case mould inside surface even brushing one deck release agent, the coal petrography block handled well is put into case mould;
3rd step, once injects the cement grout prepared in case mould, and with spatula along the tamping of case mould inwall, then knocks case mould sidewall gently with rubber mallet, makes the filling of case mould closely knit;
4th step, after shaping, maintenance 7 ~ 8 days at normal room temperature;
5th step, after maintenance completes, drilling through cylindricality test specimen along drilling through line vertically downward with core drilling rig, then will drill through the cylindricality test specimen rock cutter excision test specimen two ends cement grout section of solidifying obtained, only leave coal petrography block section, then through polishing to obtain required coal rock specimen.
Beneficial effect: the present invention is applicable to the test material preparation of irregular, breakable coal and rock.Tool has the following advantages:
1. method is simple, and process easily operates, and the material of use comparatively generally, easily obtains, and die trial can be reused, and cost is lower, has very strong practicality;
2. intensity is high, the entirety of regular shape to use concrete parcel coal petrography block to be formed, the rock mechanics test specimen being applicable to irregular, breakable coal and rock makes, the test specimen gone out through this processes farthest can ensure the mechanical property of raw coal rock mass, under the former job operation of solution irregular block not easily clamp, the deficiency of fractured coal and rock destructible.
Accompanying drawing explanation
Fig. 1 is diagrammatic cross-section of the present invention.
In figure: coal petrography block-1, waterproof material-2, case mould-3, release agent-4, cement grout-5, bores rock line-6.
Embodiment
The test material preparation method of irregular coal petrography block of the present invention or easy broken coal petrography block: surface treatment is carried out in easy fragmentation or coal petrography block in irregular shape 1, at the universal GS waterproof material 2 of coal petrography block 1 surface coating, coating thickness is no more than 2mm, applies complete, dries in the air and waits it solid aside; Get case mould 3 matched with coal petrography block 1 size, at case mould 3 inside surface even brushing one deck release agent 4, the coal petrography block 1 handled well is put into case mould 3; The cement grout 5 prepared once is injected in case mould 3, and with spatula along the tamping of case mould inwall, then knocks case mould 3 sidewall gently with rubber mallet, make the filling of case mould closely knit; After shaping, maintenance 7 ~ 8 days at normal room temperature; After maintenance completes, cylindricality test specimen is drilled through along drilling through line 6 vertically downward with core drilling rig, then will drill through the cylindricality test specimen rock cutter excision test specimen two ends cement grout section of solidifying obtained, only leave coal petrography block section, then through polishing to obtain required coal rock specimen.
Claims (1)
1. a test material preparation method for irregular coal petrography block or easy broken coal petrography block, is characterized in that comprising the steps:
The first step, surface treatment is carried out in easy fragmentation or coal petrography block in irregular shape (1), and at coal petrography block (1) surperficial coated with water blocking material (2), coating thickness is no more than 2mm, applies complete, dries in the air and waits it solid aside;
Second step, gets the matched case mould (3) with coal petrography block (1) size, at case mould (3) inside surface even brushing one deck release agent (4), the coal petrography block (1) handled well is put into case mould (3);
3rd step, once injects the cement grout (5) prepared in case mould (3), and with spatula along the tamping of case mould inwall, then knocks case mould (3) sidewall gently with rubber mallet, makes the filling of case mould closely knit;
4th step, after shaping, maintenance 7 ~ 8 days at normal room temperature;
5th step, after maintenance completes, drilling through cylindricality test specimen along drilling through line (6) vertically downward with core drilling rig, then will drill through the cylindricality test specimen rock cutter excision test specimen two ends cement grout section of solidifying obtained, only leave coal petrography block section, then through polishing to obtain required coal rock specimen.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210378957.0A CN102866050B (en) | 2012-10-09 | 2012-10-09 | A kind of test material preparation method of irregular coal petrography block or easy broken coal petrography block |
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| CN201210378957.0A CN102866050B (en) | 2012-10-09 | 2012-10-09 | A kind of test material preparation method of irregular coal petrography block or easy broken coal petrography block |
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| CN102866050B true CN102866050B (en) | 2015-10-21 |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103175720A (en) * | 2013-03-16 | 2013-06-26 | 蒲成志 | Processing technique of irregular rock during indoor drilling coring |
| CN103983494B (en) * | 2014-06-09 | 2016-04-20 | 中南大学 | A kind of containing interlayer class rock mass analogue formation test unit and test method thereof |
| CN105352786B (en) * | 2015-11-13 | 2018-11-09 | 西安建筑科技大学 | A kind of fractured rock sample makes and its loading method |
| CN105973667A (en) * | 2016-05-09 | 2016-09-28 | 贵州大学 | Preparation method of sample for hydraulic fracturing experiment of shale |
| CN107764612A (en) * | 2016-08-18 | 2018-03-06 | 上海宝冶建设工业炉工程技术有限公司 | Inorganic non-metallic material cylindrical specimens prepare mould and preparation method thereof |
| CN106918552B (en) * | 2017-03-08 | 2019-09-20 | 中国石油大学(北京) | Rock frictional test experimental provision and method |
| CN108680381A (en) * | 2018-05-16 | 2018-10-19 | 中国地质大学（武汉） | A kind of cylindrical specimens sampling method in the face containing coarse structure |
| CN109946147B (en) * | 2019-04-03 | 2020-03-10 | 中国矿业大学 | Preparation method of coal-series composite reservoir fracturing physical simulation test piece |
| CN109916696A (en) * | 2019-04-04 | 2019-06-21 | 东北大学 | A kind of test specimen production mold of easy irregular rock direct shear test |
| CN114112496A (en) * | 2021-11-23 | 2022-03-01 | 国家能源投资集团有限责任公司 | Coring and sampling method for coal pillar test piece under strong brine soaking effect |
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| CN102061685A (en) * | 2010-11-23 | 2011-05-18 | 徐伟 | Subsidence-preventing clamp for structural surface sample in direct shear experiment |
| CN102169061A (en) * | 2011-01-07 | 2011-08-31 | 河海大学 | Manufacture method for rock samples |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101718644B (en) * | 2009-12-07 | 2011-09-07 | 浙江科技学院 | Method for manufacturing direct shear test structural plane model |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102061685A (en) * | 2010-11-23 | 2011-05-18 | 徐伟 | Subsidence-preventing clamp for structural surface sample in direct shear experiment |
| CN102169061A (en) * | 2011-01-07 | 2011-08-31 | 河海大学 | Manufacture method for rock samples |
Non-Patent Citations (2)
| Title |
|---|
| 煤岩水力裂缝扩展规律试验研究;杨焦生 等;《煤炭学报》;20120131;第37卷(第1期);全文 * |
| 节理剪切试验及其表面形貌特征变化分析;曹平 等;《岩石力学与工程学报》;20110331;第30卷(第3期);全文 * |
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