CN110630200B - Simple and easy ultra-large diameter core drilling core sample extraction device and core taking method - Google Patents
Simple and easy ultra-large diameter core drilling core sample extraction device and core taking method Download PDFInfo
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- CN110630200B CN110630200B CN201910957694.0A CN201910957694A CN110630200B CN 110630200 B CN110630200 B CN 110630200B CN 201910957694 A CN201910957694 A CN 201910957694A CN 110630200 B CN110630200 B CN 110630200B
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- core
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- tube
- rock
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- 238000005553 drilling Methods 0.000 title claims abstract description 15
- 238000000605 extraction Methods 0.000 title claims abstract description 11
- 238000000034 method Methods 0.000 title claims description 13
- 239000011435 rock Substances 0.000 claims abstract description 73
- 238000005070 sampling Methods 0.000 claims abstract description 17
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 230000006872 improvement Effects 0.000 abstract description 2
- 230000008569 process Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000010959 steel 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
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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)
- Sampling And Sample Adjustment (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The invention relates to the technical field of drilling sampling device structures, in particular to a simple ultra-large diameter core drilling core sample extraction device and a core extraction method. Comprises a rock core pipe; the rock core pipe is a hollow tubular structure with openings at two ends, the upper end of the rock core pipe is fixed on a drill rod, and cutting tooth blocks are arranged at the upper end and the lower end of the rock core pipe, and the rock core pipe is characterized in that: a limiting structure is arranged on the rock core pipe; the limiting structure comprises an inner pipe part which is positioned in the core pipe and used for limiting the movement of the core from top to bottom but not limiting the movement of the core from bottom to top, and an outer pipe part which is positioned outside the core pipe and used for fixing the inner pipe part on the core pipe. The coring device disclosed by the invention is simple in structure, convenient to operate, small in improvement on the original equipment, low in use cost, suitable for extracting the large-diameter rock cores, wide in application range and great in popularization value.
Description
Technical Field
The invention relates to the technical field of drilling sampling device structures, in particular to a simple and easy ultra-large diameter core drilling core sample extraction device and a core extraction method.
Background
At present, the unstable dangerous rock body is disposed in two modes commonly used, one is blasting and clearing, construction interference is more under a limited environment, safety risk is high, and the other is reinforcing treatment, and the stability of the dangerous rock body is enhanced by arranging anchor cables or steel rail piles, so that collapse of the dangerous rock body is prevented. The latter is safe and reliable in a limited environment, and is increasingly used. But when adopting anchor rope or rail stake reinforcement mode to handle unstable danger rock mass, need core drill drilling coring, provide anchor rope or rail stake installation and anchor basis, and the required anchor hole aperture of rail stake reinforcement is generally great, and the combination rail stake reaches 300mm even, but common core drill maximum drilling coring diameter is 136mm, surpasses this numerical core sample dead weight too big, draw the difficulty, common core drill structure is comparatively complicated, the operation is also very troublesome, the cost of use is comparatively high, so conventional core drill drilling coring mode is difficult to satisfy rail stake construction requirement.
Disclosure of Invention
The invention aims to solve the defects of the background technology and provide a simple and easy ultra-large diameter core drilling core sample extraction device and a coring method.
The technical scheme of the invention is as follows: a simple and easy ultra-large diameter core drill core sample extraction device comprises a core barrel; the rock core pipe is a hollow tubular structure with openings at two ends, the upper end of the rock core pipe is fixed on a drill rod, and cutting tooth blocks are arranged at the upper end and the lower end of the rock core pipe, and the rock core pipe is characterized in that: a limiting structure is arranged on the rock core pipe; the limiting structure comprises an inner pipe part which is positioned in the core pipe and used for limiting the movement of the core from top to bottom but not limiting the movement of the core from bottom to top, and an outer pipe part which is positioned outside the core pipe and used for fixing the inner pipe part on the core pipe.
Further, a plurality of groups of limiting structures are arranged on the side wall of the core barrel, and the plurality of groups of limiting structures are arranged at intervals along the circumferential direction of the core barrel.
The further inner part of the pipe comprises a vertical section penetrating through the rock core pipe; the vertical section is a rod-shaped structure with the lower end fixed on the side wall of the core barrel through the outer part of the pipe and the upper end inclined to the axis of the core barrel and elastic,
Each group of further limiting structures comprises a plurality of vertical sections positioned in the core barrel; the outer part of the pipe comprises an arc section attached to the outer side of the rock core pipe; a plurality of short rods penetrating through the core barrel are arranged on the arc section; the lower end of the vertical section is fixedly connected with the arc line section through a short rod.
A coring method of an extraction device, characterized by: the upper end of the rock core pipe is fixed on the drill rod, the tooth block is arranged at the lower end of the rock core pipe, the inner part of the pipe extends into the rock core pipe, the rock core pipe is fixed on the rock core pipe through the outer part of the pipe, the designed coring position is drilled, after the rock core enters into the rock core pipe, the rock core is completely fixed by the rock core pipe in a reverse rotation mode, the rock core pipe is put forward to cut off the connection between the outer part of the pipe and the inner part of the pipe, and the rock core automatically falls off to finish sampling.
The method for extracting the core from the core tube comprises the following steps: after the core pipe is lifted, the connection between the outer part and the inner part of the pipe is cut off, and the core automatically falls off to finish sampling
The invention has the advantages that: 1. according to the invention, the limiting structure is arranged on the core barrel, so that the core is limited to be separated from the core barrel from top to bottom in the drilling process, and can be lifted out along with the core barrel, so that the core barrel is convenient to sample and sample, is divided into the inner part and the outer part of the pipe, is convenient to install and detach, has little change on the original structure, and is beneficial to popularization and use in a large range;
2. According to the invention, the plurality of groups of limiting structures are arranged on the side wall of the core barrel, and the plurality of groups of limiting structures cooperate to ensure that the core in the core barrel cannot fall out, thereby being beneficial to drilling large-diameter and heavy-weight cores;
3. The inner part of the pipe is a vertical section which is inclined vertically, the vertical section is filled between the rock core and the rock core pipe in the sampling process, and the upper end of the vertical section is clamped at the outer side of the rock core to limit the rock core from falling in the lifting process;
4. Each group of limiting structures comprises a plurality of vertical sections, the vertical sections can effectively improve the load bearing weight for sampling, so that a large-diameter rock core can be taken out, and the problem of falling of the rock core can be avoided;
5. the coring method is simple and convenient to operate, and the core with large diameter can be taken out by preventing the core from falling off through the part in the pipe, so that the materials are convenient to obtain;
6. The coring method can conveniently lead the rock core to fall out by cutting off the connection between the inner part and the outer part of the pipe.
The coring device disclosed by the invention is simple in structure, convenient to operate, small in improvement on the original equipment, low in use cost, suitable for extracting the large-diameter rock cores, wide in application range and great in popularization value.
Drawings
Fig. 1: front view of the sampling device of the present invention;
fig. 2: a side view of the sampling device of the present invention;
fig. 3: the perspective structure schematic diagram of the sampling device of the invention;
fig. 4: a top view of the sampling device of the present invention;
fig. 5: the vertical section, the arc section and the short rod of the sampling device are connected in a schematic structure;
Wherein: 1-a core barrel; 2-a drill rod; 3-tooth block; 4-vertical section; 5-arc segment; 6-short bar; 7-core.
Detailed Description
The invention will now be described in further detail with reference to the drawings and to specific examples.
As shown in fig. 1 to 5, a simple extracting device for a core sample of a core drill with an oversized diameter comprises a core barrel 1, the core barrel 1 in this embodiment is of a hollow cylindrical structure with openings at the upper end and the lower end, the upper end is connected to the lower end of a drill rod 2 through a connector thread, a cutting tooth block 3 is installed at the lower end, and the core is cut by the tooth block 3 to realize sampling.
The side wall of the rock core pipe 1 of the embodiment is provided with a plurality of groups of limiting structures, the plurality of groups of limiting structures are arranged at intervals along the circumferential direction of the rock core pipe 1, and the embodiment is provided with two groups of limiting structures which are symmetrically arranged. As shown in fig. 1 to 4, the side wall of the core barrel 1 of the present embodiment is provided with a through hole, and the limiting structure includes an in-pipe portion extending into the core barrel 1 through the through hole, the in-pipe portion being used for limiting the movement of the core from top to bottom but not limiting the movement of the core from bottom to top, and the in-pipe portion being fixed on the core barrel 1 by an out-pipe portion located outside the core barrel 1.
As shown in fig. 3 and 5, the inner part of the pipe comprises a vertical section 4 penetrating through the core barrel 1, each group of limiting structures comprises a plurality of vertical sections 4 positioned in the core barrel 1, and each group of limiting structures in this embodiment comprises two vertical sections 4. The vertical section 4 is a rod-shaped structure with the lower end fixed on the side wall of the core barrel 1 through the outer part of the pipe and the upper end inclined to the axis of the core barrel 1 and elastic,
As shown in fig. 2 to 5, the outer part of the pipe comprises an arc section 5 attached to the outer side of the rock core pipe 1, a plurality of short rods 6 penetrating through the through holes are arranged on the arc section 5, and the lower end of the vertical section 4 is fixedly connected with the arc section 5 through the short rods 6.
During actual sampling, the upper end of the rock core tube 1 is fixed on the drill rod 2, the tooth block 3 is arranged at the lower end of the rock core tube 1, the vertical section 4 stretches into the rock core tube 1 and is fixed on the rock core tube 1 through the arc line section 5, the designed coring position is drilled, after the rock core 7 enters the rock core tube 1, the vertical section 4 can be fully stranded with the rock core, after drilling is completed, the rock core 7 is completely fixed by the reversely rotating rock core tube 1, the rock core tube 1 is proposed, the connection between the vertical section 4 and the arc line section 5 is cut off, and the rock core 7 automatically drops to complete sampling.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (2)
1. A simple core drilling core sample extraction device comprises a core barrel (1); the rock core pipe (1) is a hollow cylindrical structure with two open ends, the upper end of the rock core pipe is fixed on the drill rod (2), and cutting tooth blocks (3) are arranged at the upper end and the lower end of the rock core pipe, and the rock core pipe is characterized in that: a limiting structure is arranged on the rock core pipe (1); the limiting structure comprises an inner pipe part which is positioned in the core pipe (1) and used for limiting the movement of the core from top to bottom but not limiting the movement of the core from bottom to top, and an outer pipe part which is positioned outside the core pipe (1) and used for fixing the inner pipe part on the core pipe (1);
a plurality of groups of limiting structures are arranged on the side wall of the rock core tube (1), and the plurality of groups of limiting structures are arranged at intervals along the circumferential direction of the rock core tube (1);
The inner part of the pipe comprises a vertical section (4) penetrating through the rock core pipe (1); the vertical section (4) is of a rod-shaped structure with the lower end fixed on the side wall of the rock core tube (1) through the outer part of the tube and the upper end inclined towards the axis of the rock core tube (1) and elasticity; each group of limiting structures comprises a plurality of vertical sections (4) positioned in the core barrel (1); the outer part of the pipe comprises an arc section (5) attached to the outer side of the rock core pipe (1); a plurality of short rods (6) penetrating through the rock core pipe (1) are arranged on the arc line section (5); the lower end of the vertical section (4) is fixedly connected with the arc section (5) through a short rod (6);
after the core tube (1) is lifted, the connection between the outer part and the inner part of the tube is cut off, and the core automatically drops off to finish sampling.
2. A method of coring an extraction device as set forth in claim 1 wherein: the method comprises the steps of fixing the upper end of a rock core tube (1) on a drill rod (2), installing a tooth block (3) at the lower end of the rock core tube (1), extending part of the inside of the tube into the rock core tube (1), fixing the part of the inside of the tube on the rock core tube (1) through the outside of the tube, drilling a designed coring position, and after a rock core (7) enters the rock core tube (1), completely fixing the rock core (7) by rotating the rock core tube (1) in the opposite direction, and extracting the rock core (7) from the rock core tube (1) to finish sampling;
The method for taking out the core (7) from the core tube (1) comprises the following steps: after the core tube (1) is lifted, the connection between the outer part and the inner part of the tube is cut off, and the core (7) automatically drops to finish sampling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910957694.0A CN110630200B (en) | 2019-10-10 | 2019-10-10 | Simple and easy ultra-large diameter core drilling core sample extraction device and core taking method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910957694.0A CN110630200B (en) | 2019-10-10 | 2019-10-10 | Simple and easy ultra-large diameter core drilling core sample extraction device and core taking method |
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| Publication Number | Publication Date |
|---|---|
| CN110630200A CN110630200A (en) | 2019-12-31 |
| CN110630200B true CN110630200B (en) | 2024-06-25 |
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| CN201910957694.0A Active CN110630200B (en) | 2019-10-10 | 2019-10-10 | Simple and easy ultra-large diameter core drilling core sample extraction device and core taking method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113358404A (en) * | 2021-06-09 | 2021-09-07 | 东华理工大学 | Exploration nail position coring device suitable for sandstone type uranium deposit |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109779553A (en) * | 2019-03-07 | 2019-05-21 | 中国地质科学院勘探技术研究所 | A kind of totally-enclosed boring sample device |
| CN211008528U (en) * | 2019-10-10 | 2020-07-14 | 中交第二航务工程局有限公司 | Simple and easy super large diameter core drill core appearance extraction element |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6550549B2 (en) * | 2000-08-25 | 2003-04-22 | Honeybee Robotics, Ltd. | Core break-off mechanism |
| US8770320B2 (en) * | 2009-11-03 | 2014-07-08 | Longyear Tm, Inc. | Core lifter |
| CN106677701B (en) * | 2017-01-23 | 2018-08-17 | 珠海市英格尔特种钻探设备有限公司 | A kind of Engineering Geologic Drilling Practice method based on cord coring drill |
| CN108661581B (en) * | 2018-04-28 | 2019-06-21 | 哈尔滨工业大学 | A kind of closing component of the coring soft bag with comb-tooth-type limiter |
| CN109681140B (en) * | 2018-12-26 | 2023-09-01 | 深圳大学 | Rock sample fidelity coring device |
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- 2019-10-10 CN CN201910957694.0A patent/CN110630200B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109779553A (en) * | 2019-03-07 | 2019-05-21 | 中国地质科学院勘探技术研究所 | A kind of totally-enclosed boring sample device |
| CN211008528U (en) * | 2019-10-10 | 2020-07-14 | 中交第二航务工程局有限公司 | Simple and easy super large diameter core drill core appearance extraction element |
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| CN110630200A (en) | 2019-12-31 |
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