CN109681141A - A kind of coring device and construction method for mine rock coring - Google Patents
A kind of coring device and construction method for mine rock coring Download PDFInfo
- Publication number
- CN109681141A CN109681141A CN201910170974.7A CN201910170974A CN109681141A CN 109681141 A CN109681141 A CN 109681141A CN 201910170974 A CN201910170974 A CN 201910170974A CN 109681141 A CN109681141 A CN 109681141A
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- Prior art keywords
- coring
- cylinder
- bit
- tube
- tooth
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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, core extractors
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
- E21B49/02—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells by mechanically taking samples of the soil
Abstract
The invention discloses a kind of coring devices and construction method for mine rock coring, device includes coring bit, coring tube and drilling rod, coring bit front end, which is equipped with, bores tooth, it bores on the inside of tooth as cylinder, it is identical as coring tube internal diameter, it bores and is protruded on the outside of tooth, water channel is disposed on drill bit side wall, outlet is located among drill bit internal tooth and external tooth；Coring bit rear end is spirally connected with coring tube front end, and coring tube side wall is equipped with water channel II, and II front end of water channel connects coring bit water channel, and rear end is connected to coring tube tail portion, and piston is equipped in coring tube；Coring tube rear end is spirally connected with drilling rod front end, and drilling rod is formed by connecting by the coring drill rod of several hollow structures.The configuration of the present invention is simple, adaptable, location of the coring procedure is simple, and coring effect is reliable.
Description
Technical field
The invention belongs to rock mechanics testing fields；A kind of cylindrical shape for mine rock coring is related in particular to take
Core apparatus and construction method.
Background technique
As domestic and international resource exploitation is constantly promoted to deep, roadway surrounding rock condition is more complicated, the difficulty of Surrounding Rock Control
Also it is gradually increased.Studies have shown that safety resource exploitation premise must geology, landforms etc. to production zone tightly surveyed
It examines, understands and grasp Hidden hazrads existing for institute's production zone, potential disaster is controlled and evaded in time.Detailedly
Matter prospecting is the basis of coal mining work, and the premise for preventing various collery's surface movements from occurring.
Mine rock mechanics parameter is the important component of mine shaft geology data, and the measurement of Mechanics Parameters of Rock Mass is mostly in room
It is carried out in interior laboratory, how to obtain mine rock rock sample, the integrality of obtained rock sample extremely closes the measurement of rock mechanics parameters
It is important.Measurement, measurement of the mine stress of primary rock of roadway surrounding rock mechanics parameter etc. all be unable to do without rock coring.
Current Domestic is outer and develops set of rock coring device, can satisfy the rock under mine majority occasion
Core work, the supplement for subsequent mine data provide reference.However, there are still many for rock coring device at this stage
The problem of, coring device is not scientific enough, and core work is relatively complicated, fitchering is frequently accompanied by location of the coring procedure, water outlet is stranded
The problems such as difficult, rock slag muck product and core block coring tube, core work is difficult, and effective rock core is seldom, and coring effect is poor.
Summary of the invention
In order to solve the above technical problem, the present invention provides a kind of structure is simple, adaptable, location of the coring procedure is simple, takes
The cylinder-shaped coring device and construction method of the reliable mine rock coring of core effect.
The technical solution adopted by the present invention is that: a kind of cylinder-shaped coring device for mine rock coring, including coring
Drill bit, coring tube and drilling rod, coring bit front end, which is equipped with, bores tooth, bores for cylinder on the inside of tooth, identical as coring tube internal diameter, bores
It is prominent on the outside of tooth, water channel is disposed on drill bit side wall, outlet is located among drill bit internal tooth and external tooth；Coring bit rear end with
Coring tube front end is spirally connected, and coring tube side wall is equipped with water channel II, and II front end of water channel connects coring bit water channel,
Rear end is connected to coring tube tail portion, and piston is equipped in coring tube；Coring tube rear end is spirally connected with drilling rod front end, and drilling rod is by several hollow
The coring drill rod of structure is formed by connecting.
It further include cable transferring head, cable transferring head in the above-mentioned cylinder-shaped coring device for mine rock coring
For T-shaped three-port structure, front end and the drilling rod rear end of cable transferring head are spirally connected.
In the above-mentioned cylinder-shaped coring device for mine rock coring, the brill tooth of the coring bit front end is divided into
Internal tooth and external tooth, internal tooth and external tooth are arranged in a ring；There are gap between adjacent internal tooth and adjacent external tooth, gap is tooth
Wide 0.3-0.5 times；Two water channels have been arranged symmetrically on drill bit side wall.
In the above-mentioned cylinder-shaped coring device for mine rock coring, the coring tube tail portion is equipped with a through-hole,
Through-hole is equipped with a countercheck rod along being arranged radially in through-hole, countercheck rod is cylinder, is equipped with nut at the both ends of countercheck rod.
In the above-mentioned cylinder-shaped coring device for mine rock coring, the piston includes rubber layer, steel layer
And gasket, gasket are made of rubber material, rubber layer is arranged on steel layer front end face, and gasket is arranged in steel layer rear end face
On.
In the above-mentioned cylinder-shaped coring device for mine rock coring, the coring tube is equipped with two on side wall
Symmetrical water channel II, two water channels, II front end is separately connected two water channels on coring bit.
It is logical that one is equipped in the above-mentioned cylinder-shaped coring device for mine rock coring, at the coring drill rod center
Hole is evenly arranged on through-hole side wall there are three axially disposed groove, is equipped with multiple steel balls in groove, steel ring is placed in through-hole
Interior, the outer wall of steel ring is contacted with steel ball, and steel ball is disposed between the both ends and coring drill rod of steel ring, and one end of coring drill rod is equipped with
External screw thread, the other end are equipped with the internal screw thread cooperated with external screw thread.
In the above-mentioned cylinder-shaped coring device for mine rock coring, the cable transferring head includes front connector with after
Connector, front connector and rear joint are connected by returning, and more steel balls are housed between returning, and front connector and rear joint junction are equipped with ring
Shape sealing ring is arranged symmetrically two internal screw thread apertures on the side wall of cable transferring head tail portion, is furnished with piston rod in aperture, in piston rod
End is connected with the piston of soft rubber structure, piston rod external screw thread steel column, and a hexagonal (hexagon)nut is welded in piston rod outer end.
The construction method of the above-mentioned cylinder-shaped coring device for mine rock coring, includes the following steps:
1) assembling is used for the cylinder-shaped coring device of mine rock coring,
2) the cylinder-shaped coring device for being used for mine rock coring is mounted on drill jumbo, transferred in drilling rod rear end or cable
The middle part of head connects hydraulic giant, starts hydraulic giant, and flowing water bores between cog from coring bit and projects；
3) drill jumbo is started, coring bit starts to rotate along coring bit center line, starts coring, takes when coring depth is close
When core tube length is spent, stops coring, exit drilling rod, and unload coring tube and coring bit；
4) coring tube tail portion is tilted upward, unscrews nut, remove the countercheck rod in coring tube, be inserted into one in coring tube tail portion
Thin stick, the spill gasket for gently hitting the rubber material of piston smoothly take out core in the case where guaranteeing the complete situation of core；
5) the cylinder-shaped coring device for mine rock coring is re-assemblied, and increases by a section coring drill rod, repeats step 2-
4), until core work is completed.
Compared with prior art, the invention has the following advantages:
1, the present invention has set of coring device, is threadedly coupled between each section by crin, is easier to compared with filament threaded connection
Assembly and disassembly, meanwhile, crin, which is threadedly coupled, has reliable safety, under huge coring torque, is not easy stripped thread and breaks
It splits；Furthermore each member outside is equipped with inclined flat structure, and compared with cylindrical structure, spanner of being more convenient for, pipe wrench are used.
2, water channel is arranged on the outside of coring tube by the present invention by changing water channel, is supplied water, is subtracted for drill bit whole process
Small bit breakage, coring is safer, simultaneously because coring bit outer diameter is bigger than coring tube outer diameter, water channel will not be with palisades
Friction is generated, ensure that the safety of water channel.
3, when being tested using hollow inclusion stress gauge by the stress of primary rock that stress relief method surveys rock mass, in core work
After the completion, it usually needs lay hollow inclusion cable in drilling rod, be equipped with steel ring, steel ring and coring in coring drill rod of the invention
Drilling rod forms rolling bearing structure, and when coring drill rod rotates, steel ring is not rotated, so that the cable in it does not rotate, ensure that
Hollow inclusion stress gauge and cable will not rotate to form twisted shape due to cable, and structural reliability is high；Cable is transferred by cable
Head is contacted from tail portion, tightens cable transferring head tail portion piston, and by tail portion channel enclosed, cable transferring head lower part connects hydraulic giant, by
It can be relatively rotated in cable transferring head front and rear part, hydraulic giant is constantly in vertical state, and electricity is laid in drilling rod to solve
In the case where cable, water supply coring.
4, the present invention is equipped with metallic numerals note on coring drill rod, successively installs coring drill rod, every coring in order
Run of steel is constant, convenient to calculate coring depth outside, and engraves the number for having installed coring drill rod when not used, guarantees
The accuracy of coring.
5, the present invention also has structure simple, and adaptable, location of the coring procedure is simple, the reliable advantage of coring effect.
Detailed description of the invention
Fig. 1 is overall structure diagram of the invention.
Fig. 2 is the structural schematic diagram of coring bit of the invention.
Fig. 3 is the structural schematic diagram of coring tube of the invention.
Fig. 4 is the structural schematic diagram that coring tube of the invention is rotated by 90 ° along coring tube axial line.
Fig. 5 is the structural schematic diagram of coring drill rod of the invention.
Fig. 6 is coring drill rod left side structure enlarged diagram of the invention.
Fig. 7 is coring drill rod right side structure enlarged diagram of the invention.
Fig. 8 is A-A cross-sectional view in Fig. 5.
Fig. 9 is the structural schematic diagram that coring drill rod of the invention is rotated by 90 ° along coring drill rod shaft centre line.
Figure 10 is the structural schematic diagram of cable transferring head of the invention.
Figure 11 is B-B cross-sectional view in Figure 10.
Figure 12 is C-C cross-sectional view in Figure 10.
Specific embodiment
The present invention will be further described below with reference to the drawings.
As shown in Figure 1, the present invention includes a kind of cylinder-shaped coring device for mine rock coring, including coring bit
1, coring tube 5, drilling rod and cable transferring head 26.Coring bit 1 is spirally connected with 5 front end of coring tube, 5 rear end of coring tube and drilling rod front end
It is spirally connected, drilling rod rear end is spirally connected with cable transferring head 26；Drilling rod is formed by connecting by the coring drill rod 18 of several hollow structures.
As shown in Fig. 2, 1 front end of coring bit, which is equipped with, bores tooth 2, bores tooth 2 and divide for internal tooth and external tooth, internal tooth and external tooth are equal
It arranges in a ring, there are gap, gap is 0.3-0.5 times of the facewidth for adjacent two internal tooth and adjacent two outer between cog.Bore 2 inside of tooth
It is identical as 5 internal diameter of coring tube for cylinder, it bores and is protruded on the outside of tooth 2, according to Practical Project situation, bore 2 outer diameter of tooth greater than after drill bit
Portion 1-2cm.Two water channels 3 are arranged symmetrically on drill bit side wall, water channel 3 is disposed radially, and inlet connects coring tube
Water channel 8, outlet are located among 2 internal tooth of drill bit and external tooth, and 2 tail portion of coring bit is crin external screw thread 4, with coring tube front
Crin internal screw thread 6 matches.
As shown in Figure 3, Figure 4, the 5 tail portion side wall of coring tube is equipped with through-hole 10, and through-hole 10 is disposed radially, through-hole 10
In wear a cylindrical countercheck rod 11, for countercheck rod 11 for stopping the subsequent piston 12 of iron staff, 11 both ends of countercheck rod have external screw thread,
It is connected with nut 9.Piston 12 in coring tube 5 includes rubber layer 13, the spill gasket 15 of steel layer 14 and a rubber material,
Rubber layer 13 is adhesive on 14 front end face of steel layer by strength, and gasket 15 is adhesive on 14 rear end face of steel layer by strength.
5 tail portion of coring tube has crin internal screw thread 17, matches with drilling rod front end crin external screw thread 19.5 side wall of coring tube is equipped with two
Water channel II 8, two water channels II 8 are symmetrical arranged, and II 8 front end of water channel connects the water channel on coring bit 1
3,5 tail portion 16 of coring tube is led in II channel tail portion of supplying water.
As shown in figures 5-9, through-hole is equipped at 18 center of coring drill rod, the side wall of through-hole is equipped with the groove of three rectangles
21, three grooves 21 are arranged at equilateral triangle, are had 10 steel balls 22 in every groove 21, are equipped with one in 18 through-hole of coring drill rod
The steel ring 23 of annular, 23 outer circle of steel ring are contacted with steel ball 22 in groove 21, can be freely rotated with 18 center line of rock drilling rod, steel ring 23
Steel ball 20 is arranged between both ends and coring drill rod 18.One end of coring drill rod 18 be equipped with external screw thread 19, the other end be equipped with
The internal screw thread 25 of external screw thread cooperation, internal screw thread 25 can external hydraulic giant or cable transferring head 26.18 shaft of coring drill rod posts gold
Belong to label 24, for counting.
As shown in figs. 10-12, the cable transferring head 26 is in T font, and cable walks around 26 front end of connector with the outer spiral shell of crin
Line 27 can match with drilling rod tail portion crin internal screw thread 25.Cable transferring head 26 includes front connector 28 and rear joint 31, front connector
28, which cross returning with rear joint logical 31, connects, and more steel balls 30 are housed between returning, and front connector 28 and 31 junction of rear joint are equipped with ring
Shape sealing ring 29 can prevent water flow from oozing out from junction.Two internal screw threads are arranged symmetrically on 26 tail portion side wall of cable transferring head
Aperture, internal screw thread aperture 35 is interior to be furnished with piston rod 36, and piston rod 36 is external screw thread steel column, and 36 inner end of piston rod is connected with soft rubber
A hexagonal (hexagon)nut 34 is welded in the piston 38 of structure, 36 outer end of piston rod.Crin internal thread hole 32 is equipped in the middle part of cable transferring head 26,
It can external hydraulic giant.
The construction method of cylinder-shaped coring device for mine rock coring of the invention include the following steps: 1) according to
Assembling shown in Fig. 1 is used for the cylinder-shaped coring device of mine rock coring, situation one: when passing through coring bit 1 without cable: first
First, the crin external screw thread 6 of crin screw thread 4 outside the tail portion of coring bit 1 and 5 front of coring tube is subjected to rotation connection, is plugged and takes
The iron staff 11 of aperture 10 in core cylinder 5 guarantees that 5 inner piston 12 of coring tube is located at 11 rear side of iron staff, and tightens nut 9.Then, it connects
The crin external screw thread 19 of coring tube 5 rear portion crin internal screw thread 16 and 18 front of coring bit is needed if you need to when more piece coring drill rod 18
Coring drill rod 18 is sequentially connected according to coring drill rod number 24；Finally, jointed rod tail portion crin internal screw thread 25 and hydraulic giant.
Situation two: when thering is cable to pass through drilling rod: cable being sequentially passed through coring bit 1, coring tube 5, drilling rod and cable and is turned
Connector 26 connects coring bit 1, coring tube 5 and drilling rod, cable transferring head 26 according to situation one, after having combed route, passes through
Hex nut 34 is turned, makes the piston 33 in cable transferring head 26 to cable extrusion, until rubber structure 38 is bonded cable completely,
26 right channel of cable transferring head is closed, meanwhile, hydraulic giant is connected in the lower part of cable transferring head 26.
2) the cylinder-shaped coring device for being used for mine rock coring is mounted on drill jumbo, rear end or electricity in drilling rod
The middle part of cable adapter 26 connects hydraulic giant, starts hydraulic giant, and flowing water is projected from the brill between cog of coring bit 1；
3) drill jumbo is started, coring bit 1 starts to rotate along 1 center line of coring bit, starts coring, when coring depth is close
When 5 length of coring tube, stops coring, exit drilling rod, and unload coring tube 5 and coring bit 1；
4) 5 tail portion of coring tube is tilted upward, unscrews nut 9, the countercheck rod 11 in coring tube 5 is removed, in coring tube tail portion 16
It is inserted into a thin stick, gently hits the spill gasket 15 of the rubber material of piston 12, since 12 front end of piston is rubber material 13,
When hitting piston 12 with thin stick, institute's coring will not be damaged, in the case where guaranteeing the complete situation of core, smoothly takes out core；
5) the cylinder-shaped coring device for mine rock coring is re-assemblied, and increases by a section coring drill rod 18, repeats step
2) -4), until core work is completed.
Claims (9)
1. a kind of cylinder-shaped coring device for mine rock coring, it is characterized in that: including coring bit, coring tube and brill
Bar, coring bit front end, which is equipped with, bores tooth, bores for cylinder on the inside of tooth, identical as coring tube internal diameter, bores prominent on the outside of tooth, drill bit
Water channel is disposed on side wall, outlet is located among drill bit internal tooth and external tooth；Coring bit rear end is spirally connected with coring tube front end,
Coring tube side wall is equipped with water channel II, and II front end of water channel connects coring bit water channel, rear end and coring tube tail
Portion's connection, coring tube is interior to be equipped with piston；Coring tube rear end is spirally connected with drilling rod front end, drilling rod by several hollow structures coring drill rod
It is formed by connecting.
2. the cylinder-shaped coring device according to claim 1 for mine rock coring, it is characterized in that: further including cable
Adapter, cable transferring head are T-shaped three-port structure, and front end and the drilling rod rear end of cable transferring head are spirally connected.
3. the cylinder-shaped coring device according to claim 2 for mine rock coring, it is characterized in that: the coring
The brill tooth of chisel edge is divided into internal tooth and external tooth, and internal tooth and external tooth are arranged in a ring；Adjacent internal tooth and adjacent external tooth it
Between there are gap, gap is 0.3-0.5 times of the facewidth；Two water channels have been arranged symmetrically on drill bit side wall.
4. the cylinder-shaped coring device according to claim 1 or 2 for mine rock coring, it is characterized in that: described
Coring tube tail portion is equipped with a through-hole, and through-hole is equipped with a countercheck rod along being arranged radially in through-hole, countercheck rod is cylinder, stops
Nut is equipped at the both ends of bar.
5. the cylinder-shaped coring device according to claim 1 for mine rock coring, it is characterized in that: the piston
Including rubber layer, steel layer and gasket, gasket are made of rubber material, and rubber layer is arranged on steel layer front end face, and gasket is set
It sets on steel layer rear end face.
6. the cylinder-shaped coring device according to claim 3 for mine rock coring, it is characterized in that: the coring
Cylinder is equipped with two symmetrical water channels II on side wall, and it is logical that two water channels, II front end is separately connected two water supply on coring bit
Road.
7. the cylinder-shaped coring device according to claim 1 for mine rock coring, it is characterized in that: the core drill
It is equipped with a through-hole at bar center, is evenly arranged on through-hole side wall there are three axially disposed groove, groove is interior to be equipped with multiple steel
Pearl, steel ring are placed in through-hole, and the outer wall of steel ring is contacted with steel ball, are disposed with steel ball between the both ends and coring drill rod of steel ring, are taken
One end of core drilling rod is equipped with external screw thread, and the other end is equipped with the internal screw thread cooperated with external screw thread.
8. the cylinder-shaped coring device according to claim 2 for mine rock coring, it is characterized in that: the cable turns
Connector includes front connector and rear joint, and front connector is connected with rear joint by returning, between returning be equipped with more steel balls, front connector and
Rear joint junction is equipped with ring type seal, is arranged symmetrically two internal screw thread apertures on the side wall of cable transferring head tail portion, in aperture
Equipped with piston rod, piston rod inner end is connected with the piston of soft rubber structure, piston rod external screw thread steel column, piston rod outer end welding one
Hexagonal (hexagon)nut.
9. applying for the cylinder-shaped coring device of mine rock coring described in any claim in a kind of claim 1-8
Work method, includes the following steps:
1) assembling is used for the cylinder-shaped coring device of mine rock coring,
2) the cylinder-shaped coring device for being used for mine rock coring is mounted on drill jumbo, transferred in drilling rod rear end or cable
The middle part of head connects hydraulic giant, starts hydraulic giant, and flowing water bores between cog from coring bit and projects；
3) drill jumbo is started, coring bit starts to rotate along coring bit center line, starts coring, takes when coring depth is close
When core tube length is spent, stops coring, exit drilling rod, and unload coring tube and coring bit；
4) coring tube tail portion is tilted upward, unscrews nut, remove the countercheck rod in coring tube, be inserted into one in coring tube tail portion
Thin stick, the spill gasket for gently hitting the rubber material of piston smoothly take out core in the case where guaranteeing the complete situation of core；
5) the cylinder-shaped coring device for mine rock coring is re-assemblied, and increases by a section coring drill rod, repeats step 2-
4), until core work is completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910170974.7A CN109681141A (en) | 2019-03-07 | 2019-03-07 | A kind of coring device and construction method for mine rock coring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910170974.7A CN109681141A (en) | 2019-03-07 | 2019-03-07 | A kind of coring device and construction method for mine rock coring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109681141A true CN109681141A (en) | 2019-04-26 |
Family
ID=66197697
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910170974.7A Pending CN109681141A (en) | 2019-03-07 | 2019-03-07 | A kind of coring device and construction method for mine rock coring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109681141A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110821475A (en) * | 2019-11-28 | 2020-02-21 | 中煤科工集团西安研究院有限公司 | Coal mine working face bottom plate drilling resistivity monitoring method and cable pushing device |
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2019
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Cited By (2)
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| CN110821475A (en) * | 2019-11-28 | 2020-02-21 | 中煤科工集团西安研究院有限公司 | Coal mine working face bottom plate drilling resistivity monitoring method and cable pushing device |
| CN110821475B (en) * | 2019-11-28 | 2023-04-25 | 中煤科工集团西安研究院有限公司 | Drilling resistivity monitoring method for coal mine working face bottom plate and cable pushing device |
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