CN107916905A - Reciprocating coring method and device for rock stratum sampling - Google Patents
Reciprocating coring method and device for rock stratum sampling Download PDFInfo
- Publication number
- CN107916905A CN107916905A CN201810001331.5A CN201810001331A CN107916905A CN 107916905 A CN107916905 A CN 107916905A CN 201810001331 A CN201810001331 A CN 201810001331A CN 107916905 A CN107916905 A CN 107916905A
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- Prior art keywords
- coring
- storehouse
- hollow drill
- spacing
- rock stratum
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- 239000011435 rock Substances 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000005070 sampling Methods 0.000 title claims abstract description 14
- 238000005553 drilling Methods 0.000 claims abstract description 27
- 238000005516 engineering process Methods 0.000 description 3
- 230000001737 promoting effect Effects 0.000 description 3
- 230000006378 damage Effects 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B25/00—Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors
- E21B25/10—Formed core retaining or severing means
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The present invention relates to a kind of reciprocating coring method for rock stratum sampling, comprise the following steps：1）The hollow drill for being fixedly arranged at the front end with coring storehouse is drilled by predetermined bore path, when drilling depth reaches coring length, stops drilling, core enters in coring storehouse；2）Hollow drill is fixed, after the endoporus of coring storehouse along hollow drill is taken out, then core is taken out from coring storehouse；3）The endoporus of coring storehouse along hollow drill is pushed into the front end of hollow drill and is fixed, is drilled again by predetermined bore path and coring；4）Repeat step 1）To step 3）, until drilling total depth reaches desired depth.The present invention can greatly improve rock stratum coring efficiency, reduce working strength, and improve coring precision and quality.
Description
Technical field
Present invention relates particularly to a kind of reciprocating coring method and device for rock stratum sampling, belong to geological drilling technology
Field.
Background technology
When mining is when Geological Engineering operation, it is necessary to geological prospecting work be carried out, to obtain rock structure, physics, mechanics
The indexs such as property.It is most direct exploration means to carry out coring to rock stratum, and specific method is bored downwards from earth's surface with hollow drill
Into, cylindrical bore is formed in rock stratum, obtaining core, sample ore, soil sample at different depth from drilling analyzes and researches, with
Differentiate and divide rock stratum.General up to rice up to a hundred since coring depth is larger, traditional coring method is reached in single drilling
During certain depth, hollow drill is exited completely, after taking out core out of drilling rod, drilling rod is probeed into drilling again, is carried out down
Boring and coring, so constantly repeats to drill and move back bar, until coring total depth reaches predetermined value.The above method exists
The problem of have：Hollow drill weight is larger, and the process of whole coring needs repeatedly to move back bar, and working strength is very big, Er Qieyou
There are frictional resistance between drilling rod and drilling, bar and big into bar difficulty is moved back, speed is slow, causes coring extremely inefficient；Due to weight
Multiple moves back bar and into bar, be easy to cause bore path and deviates predefined paths, causes the reduction of coring precision；In addition, what is repeated moves back bar
Pollution and damage with next layer of core sample is be easy to cause into bar operation, destroy its original rock structure, physics, mechanical property
The indexs such as matter, cause the reduction of coring quality.
The content of the invention
To solve the above problems, reducing the labor intensity of coring, coring precision and quality are improved, the present invention provides
A kind of reciprocating coring method for rock stratum sampling, specifically includes following steps：
1）The hollow drill for being fixedly arranged at the front end with coring storehouse is drilled by predetermined bore path, when drilling depth reaches coring length
When spending, stop drilling, core enters in coring storehouse；
2）Hollow drill is fixed, after the endoporus of coring storehouse along hollow drill is taken out, then core is taken out from coring storehouse；
3）The endoporus of coring storehouse along hollow drill is pushed into the front end of hollow drill and is fixed, again by predetermined drilling road
Footpath is drilled and coring；
4）Repeat step 1）To step 3）, until drilling total depth reaches desired depth.
The method of the present invention is with compared with tradition coring method, being in the setting coring storehouse of hollow drill, in coring
When, by the push-in to coring storehouse and take out operation and realize coring, bar is moved back and into bar without what is repeated to hollow drill.Can
Working strength is greatly reduced, and improve coring efficiency；Due to this method do not have to carry out in whole boring procedure to move back bar and into
Bar, therefore can ensure that hollow drill drills by predefined paths all the time, improve coring precision；Moreover, the present invention can be with
Avoid repeating moving back bar and into bar when treats the destruction of coring sample, core is in coring storehouse during coring, can be effectively ensured
Its integrity, so as to improve coring quality.
To realize the coring method of the present invention, present invention also offers a kind of reciprocating coring dress for rock stratum sampling
Put, including hollow drill, coring storehouse and coring bar；The coring storehouse is the cylinder of one end open, cylinder external diameter and hollow drill
Internal diameter matching；Coring storehouse front limit and the coring storehouse for being used for fixing coring storehouse are equipped with the front end of the hollow drill madial wall
Spacing afterwards, coring storehouse front limit is spacing for fixation, and spacing behind coring storehouse is unidirectional spacing along what is set backward；The coring bar is
Hard drilling rod, the front end of coring bar are equipped with dismountable connector, connector be used to driving it is spacing behind coring storehouse and with coring storehouse
Connection.
Further, it is spacing that core is equipped with the front end of the madial wall in the coring storehouse, spacing core is along preceding to setting
It is unidirectional spacing.Core is spacing to be used to be fixed to entering the core in coring storehouse, can be prevented in coring, and core is from taking
Core comes off in storehouse.
Further, the unidirectional spacing limited block for hollow drill or the madial wall elastic connection in coring storehouse, limit
One end of position block is inclined plane, and the other end is vertical plane.Vertical plane is towards spacing to setting, when promoting limited block along vertical plane,
Limited block can effectively play position-limiting action；And along inclined plane promote limited block when, can by limited block be pressed into hollow drill or
The madial wall in coring storehouse, so as to lose position-limiting action.
Further, coring storehouse front limit is the annular stop platform set along hollow drill madial wall.
Further, the rear end in the coring storehouse is equipped with clamping joint；The connector is the endoporus phase with hollow drill
The cylindrical body matched somebody with somebody, the front end of cylindrical body are equipped with the Rapid fastener for being used for being connected with the clamping joint.When Rapid fastener and clamping joint
After connection, connector and the rear end in coring storehouse link into an integrated entity.
The coring device is used for realization coring method disclosed by the invention, its operation principle is：When needing coring, utilize
The endoporus of coring storehouse along hollow drill is pushed into the front end of hollow drill by coring bar, and coring storehouse is touched in the front end in coring storehouse first
It is spacing afterwards, and drive behind coring storehouse spacing action to lose position-limiting action, after coring storehouse is pushed further into until rear end is in coring storehouse
Before spacing, spacing reset behind coring storehouse, fixation is played to coring storehouse.At this time, hollow drill drills, and core is complete
Into after coring storehouse, stop drilling, connector is connected to coring bar top, by the coring bar with connector along hollow drill
Endoporus is pushed into, and connector drives spacing action behind coring storehouse first, and is connected with the clamping joint of coring storehouse rear end；Finally by coring
Bar connection coring storehouse is together taken out, and completes single coring.
Brief description of the drawings
Fig. 1 is the structure diagram of coring device in the present invention.
Embodiment
Embodiment 1
A kind of reciprocating coring method for rock stratum sampling, specifically includes following steps：
1）The hollow drill for being fixedly arranged at the front end with coring storehouse is drilled by predetermined bore path, when drilling depth reaches coring length
When spending, stop drilling, core enters in coring storehouse；
2）Hollow drill is fixed, after the endoporus of coring storehouse along hollow drill is taken out, then core is taken out from coring storehouse；
3）The endoporus of coring storehouse along hollow drill is pushed into the front end of hollow drill and is fixed, again by predetermined drilling road
Footpath is drilled and coring；
4）Repeat step 1）To step 3）, until drilling total depth reaches desired depth.
Embodiment 2
As shown in Figure 1, a kind of reciprocating coring device for rock stratum sampling, including hollow drill 1, coring storehouse 2 and coring bar
4；The coring storehouse 2 is the cylinder of one end open, and cylinder external diameter is matched with the internal diameter of hollow drill 1；The inner side of hollow drill 1
Equipped with after the coring storehouse front limit 7 and coring storehouse for being used to fix coring storehouse 2 spacing 6 at the front end of wall, coring storehouse front limit 7 is solid
Fixing limit, spacing 6 be unidirectional spacing along what is set backward behind coring storehouse；The coring bar 4 is hard drilling rod, before coring bar 4
End is equipped with dismountable connector 3, and connector 3 is for driving behind coring storehouse spacing 6 and being connected with coring storehouse 2.
Core spacing 5 is equipped with the front end of the madial wall in the coring storehouse 2, core spacing 5 is along preceding to the unidirectional of setting
It is spacing.Core spacing 5 is used to be fixed to entering the core in coring storehouse 2, can prevent in coring, and core is from coring storehouse
Come off in 2.
The unidirectional spacing limited block for hollow drill or the madial wall elastic connection in coring storehouse, one end of limited block
For inclined plane, the other end is vertical plane.Vertical plane is towards spacing to setting, and when promoting limited block along vertical plane, limited block can be with
Effectively play position-limiting action；And during along inclined plane promotion limited block, limited block can be pressed into hollow drill or coring storehouse
Side wall, so as to lose position-limiting action.
Coring storehouse front limit 7 is the annular stop platform set along 1 madial wall of hollow drill.
The rear end in the coring storehouse 2 is equipped with clamping joint 8；The connector 3 is the column to match with the endoporus of hollow drill 1
Body, the front end of cylindrical body are equipped with the Rapid fastener 9 for being used for being connected with the clamping joint 8.When Rapid fastener 9 and clamping joint 8 connect
After connecing, connector and the rear end in coring storehouse link into an integrated entity.
Connector 3 can be connected through a screw thread with coring bar 4 in the present embodiment；The concrete structure of Rapid fastener 9 can use existing
There is quick connector form usual in technology, as long as can realize that connector 3 can be fast with the clamping joint 8 of coring storehouse rear end when promoting
Speed connection, and can quickly be split after being taken out in coring storehouse.Connector 3 and the type of attachment in coring storehouse 2 can also use
Other customary means are replaced, and are such as threadedly coupled or magnetic suck connects.
Claims (6)
- A kind of 1. reciprocating coring method for rock stratum sampling, it is characterised in that comprise the following steps：1）The hollow drill for being fixedly arranged at the front end with coring storehouse is drilled by predetermined bore path, when drilling depth reaches coring length When spending, stop drilling, core enters in coring storehouse；2）Hollow drill is fixed, after the endoporus of coring storehouse along hollow drill is taken out, then core is taken out from coring storehouse；3）The endoporus of coring storehouse along hollow drill is pushed into the front end of hollow drill and is fixed, again by predetermined drilling road Footpath is drilled and coring；4）Repeat step 1）To step 3）, until drilling total depth reaches desired depth.
- A kind of 2. reciprocating coring device for rock stratum sampling, it is characterised in that：Including hollow drill, coring storehouse and coring Bar；The coring storehouse is the cylinder of one end open, and cylinder external diameter is matched with the internal diameter of hollow drill；The hollow drill madial wall Front end at be equipped with spacing behind the coring storehouse front limit for being used for fixing coring storehouse and coring storehouse, coring storehouse front limit limits to be fixed , spacing behind coring storehouse is unidirectional spacing along what is set backward；The coring bar is hard drilling rod, and the front end of coring bar is equipped with can The connector of dismounting, connector are used to drive spacing behind coring storehouse and are connected with coring storehouse.
- 3. the reciprocating coring device according to claim 1 for rock stratum sampling, it is characterised in that：The coring storehouse It is spacing that core is equipped with the front end of madial wall, spacing core is along preceding to the unidirectional spacing of setting.
- 4. the reciprocating coring device for being used for rock stratum sampling according to Claims 2 or 3, it is characterised in that：It is described unidirectional The spacing limited block for hollow drill or the madial wall elastic connection in coring storehouse, one end of limited block are inclined plane, the other end For vertical plane.
- 5. the reciprocating coring device according to claim 4 for rock stratum sampling, it is characterised in that：Before the coring storehouse Spacing is the annular stop platform set along hollow drill madial wall.
- 6. the reciprocating coring device according to claim 4 for rock stratum sampling, it is characterised in that：The coring storehouse Rear end is equipped with clamping joint；The connector is the cylindrical body to match with the endoporus of hollow drill, and the front end of cylindrical body, which is equipped with, to be used In the Rapid fastener being connected with the clamping joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810001331.5A CN107916905A (en) | 2018-01-02 | 2018-01-02 | Reciprocating coring method and device for rock stratum sampling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810001331.5A CN107916905A (en) | 2018-01-02 | 2018-01-02 | Reciprocating coring method and device for rock stratum sampling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107916905A true CN107916905A (en) | 2018-04-17 |
Family
ID=61894666
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810001331.5A Pending CN107916905A (en) | 2018-01-02 | 2018-01-02 | Reciprocating coring method and device for rock stratum sampling |
Country Status (1)
| Country | Link |
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| CN (1) | CN107916905A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108414277A (en) * | 2018-06-13 | 2018-08-17 | 中国科学院武汉岩土力学研究所 | Rock mass core boring sampling device and sampling method under microgravity environment |
| CN112067343A (en) * | 2020-08-17 | 2020-12-11 | 四川轻化工大学 | Sampling device for geotechnical engineering investigation and using method thereof |
| CN115949361A (en) * | 2023-03-14 | 2023-04-11 | 中国矿业大学 | Coal bed gas content measurement coring-while-drilling device and coring method |
Citations (9)
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|---|---|---|---|---|
| GB715905A (en) * | 1951-12-13 | 1954-09-22 | Frank Walmsley | Improvements relating to core drills |
| US20020033279A1 (en) * | 2000-08-25 | 2002-03-21 | Myrick Thomas M. | Core break-off mechanism |
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2018
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| CN203559781U (en) * | 2013-09-22 | 2014-04-23 | 北京信远华油科技有限公司 | Combined type well wall coring instrument drill bit |
| US20150275604A1 (en) * | 2014-04-01 | 2015-10-01 | National Oilwell Varco, L.P. | Frangible core barrel |
| JP5920739B1 (en) * | 2014-11-14 | 2016-05-18 | 基礎地盤コンサルタンツ株式会社 | Ground sampling device and ground sampling method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108414277A (en) * | 2018-06-13 | 2018-08-17 | 中国科学院武汉岩土力学研究所 | Rock mass core boring sampling device and sampling method under microgravity environment |
| CN112067343A (en) * | 2020-08-17 | 2020-12-11 | 四川轻化工大学 | Sampling device for geotechnical engineering investigation and using method thereof |
| CN115949361A (en) * | 2023-03-14 | 2023-04-11 | 中国矿业大学 | Coal bed gas content measurement coring-while-drilling device and coring method |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180417 |
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