CN202485928U - Spiral coal sample coring pipe for underground coal mine - Google Patents
Spiral coal sample coring pipe for underground coal mine Download PDFInfo
- Publication number
- CN202485928U CN202485928U CN2012200011939U CN201220001193U CN202485928U CN 202485928 U CN202485928 U CN 202485928U CN 2012200011939 U CN2012200011939 U CN 2012200011939U CN 201220001193 U CN201220001193 U CN 201220001193U CN 202485928 U CN202485928 U CN 202485928U
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- China
- Prior art keywords
- spiral
- coal
- corer
- coal mine
- coring pipe
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Abstract
A spiral coal sample coring pipe for an underground coal mine comprises a coring drill bit, a spiral coring pipe and a drill rod connecting device, wherein the coring drill bit and the drill rod connecting device are respectively connected at the front end and the rear end of the spiral coring pipe. The spiral coal sample coring pipe for the underground coal mine is simple in structure and convenient to use, and the spiral coring pipe arranged in a coal seam can be easily withdrawn when the drill is withdrawn. The spiral coal sample coring pipe for the underground coal mine improves the working efficiency and lowers the working difficulty and strength.
Description
Technical field
The utility model belongs to gets the instrument that core is measured gas bearing capacity under the coal mine, relate in particular to coal sample corer under a kind of spiral coal mine.
Background technology
Dark more originally along with domestic coal mining composed at coal-bed gas and to be deposited in the rule research, and an important content is exactly the mensuration of coal seam gas-bearing capacity.The mensuration of gas bearing capacity is divided into direct method and indirect method, direct method be exactly under the coal mine scene get coal sample and directly measure seam gas content.Specifically be divided into two kinds: a kind of is the gas analytic properties of measuring drilling cuttings under the coal mine, obtains seam gas content thus; A kind of in addition is exactly to get the coal core directly to measure the coal seam gas-bearing capacity method, and this method is exactly the gas analytic properties of on-site sampling, sealing, mensuration coal, utilizes analytic properties and coal in the initial exposure certain hour, to calculate the gas loss amount.Further calculate gas bearing capacity through equipment.Time for well sampling is the key of absolute gas loss amount size.Just mostly corer is circular at present, when core is got in the down-hole, when throwing the coal seam into rig, is not easy the circular corer that places the coal seam is extracted when moving back brill.Tend to cause the postponement of time, can't satisfy the needs of time.
The utility model content
The utility model technical matters to be solved is to the problem in the background technology, and coal sample corer under a kind of band spiral coal mine is provided.
Adopt following technical scheme in order to solve the problems of the technologies described above: coal sample corer under a kind of band spiral coal mine; Comprise coring bit, spiral corer and drilling rod coupling arrangement, coring bit and drilling rod coupling arrangement are connected to the front-end and back-end of spiral corer.
The external diameter of described coring bit is not less than the external diameter of spiral corer.
The utility model is simple in structure, easy to use, moves back when boring to be easy to the spiral corer that places the coal seam is extracted.Improve work efficiency, reduced work difficulty and intensity.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Embodiment
As shown in Figure 1, coal sample corer under a kind of band spiral coal mine comprises coring bit 1, spiral corer 3 and drilling rod coupling arrangement 5.Coring bit 1 is connected with the front end of spiral corer 3 through the drill bit junction 2 at its rear portion, and the drilling rod coupling arrangement is connected with the rear end of spiral corer 3 through the junction 4 of front end.The external diameter of coring bit is not less than the external diameter of spiral corer.
According to the degree of depth that will measure the gas bearing capacity hole, adopt rig to install earlier and drill, when band is got to projected depth greater than the drill bit of coring bit; Release drilling rod, the former drill bit of drilling is returned, be connected with drilling rod coupling arrangement 5 with drilling rod; Again spiral corer 3 is sent in the hole; Drill during to design attitude, coal sample gets in the spiral corer 3 through coring bit 1 in the process of creeping into, and the outside pierces the spiral corer through the helicla flute on the spiral corer; By the time after getting core and finishing, move back when boring coring drill rod and can beat the time that brill is moved back in minimizing through self helicla flute.
Claims (2)
1. be with coal sample corer under the spiral coal mine for one kind, it is characterized in that: comprise coring bit, spiral corer and drilling rod coupling arrangement, coring bit and drilling rod coupling arrangement are connected to the front-end and back-end of spiral corer.
2. coal sample corer under the band spiral coal mine according to claim 1, it is characterized in that: the external diameter of described coring bit is not less than the external diameter of spiral corer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200011939U CN202485928U (en) | 2012-01-04 | 2012-01-04 | Spiral coal sample coring pipe for underground coal mine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200011939U CN202485928U (en) | 2012-01-04 | 2012-01-04 | Spiral coal sample coring pipe for underground coal mine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202485928U true CN202485928U (en) | 2012-10-10 |
Family
ID=46960343
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200011939U Expired - Fee Related CN202485928U (en) | 2012-01-04 | 2012-01-04 | Spiral coal sample coring pipe for underground coal mine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202485928U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104764625A (en) * | 2015-04-14 | 2015-07-08 | 河南理工大学 | Low-temperature coal seam sampling device and method |
-
2012
- 2012-01-04 CN CN2012200011939U patent/CN202485928U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104764625A (en) * | 2015-04-14 | 2015-07-08 | 河南理工大学 | Low-temperature coal seam sampling device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121010 Termination date: 20170104 |