CN103837368A - Dry-type joint coal rock sampling device and sampling method thereof - Google Patents
Dry-type joint coal rock sampling device and sampling method thereof Download PDFInfo
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- CN103837368A CN103837368A CN201410107871.3A CN201410107871A CN103837368A CN 103837368 A CN103837368 A CN 103837368A CN 201410107871 A CN201410107871 A CN 201410107871A CN 103837368 A CN103837368 A CN 103837368A
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Abstract
The invention relates to a dry-type joint coal rock sampling device and a sampling method thereof. The dry-type joint coal rock sampling device comprises a cutting device and a sampling device, wherein the cutting device is provided with a cutting base, one end of a cutting wall is connected with the cutting base, a saw blade is mounted on the other end of the cutting wall, and a height regulating device is mounted between the cutting base and the saw blade; the cutting base further comprises a cutting track; a sliding rail base is connected with the cutting track, the sliding rail base is a two-way sliding rail and capable of moving along the cutting track or in a direction perpendicular to the cutting track, and a base translation control handwheel is mounted on the sliding rail base; a turnplate is mounted at the center of the sliding rail base and is provided with a handwheel, and rock samples are arranged on the turnplate; the sampling device comprises a sampling base, a clamping device, a diamond sampling drill bit, an openable transparent cover, a refrigerating device, an air blowing device and an exhaust fan. The dry-type joint coal rock sampling device is capable of either effectively avoiding coal briquette falling and coal rock cracking due to instability in the coal rock cutting process or accurately controlling the cutting thickness of the coal rock, and therefore, the purpose of accurate cutting is achieved.
Description
One, technical field:
What the present invention relates to is the instrument of preparing of rock mechanics sample in the fields such as rock mechanics engineering, petroleum engineering, mining engineering, and what be specifically related to is bore sample device and sampling method thereof of joint coal petrography dry type.
Two, background technology:
Rock Mechanics Test And is the key method of research earth's surface and underground deep layer physical-mechanical properties of rock, according to " coal and physical-mechanical properties of rock assay method " defined, rock physics mechanical test is conventional is cylindrical sample, and size mostly is Φ 25mm*50mm or Φ 50mm*100mm.But coal petrography has complex structure more, fragility is large, easily broken, squeezable character, and innerly often deposit a large amount of perforations or do not connect, be interrupted or continuous crack, its nonuniformity and anisotropy are very remarkable.Not only the mechanics physical property in coal petrography vertical stratification direction and in parallel bedding direction differs greatly, and its composition difference on different directions and different depth in same coal seam is also very large.Bedding is the first order weak interface of coal rock layer, and face cleat is time one-level weak interface.The preparation of these weak interfaces on coal petrography sample, the test of mechanics physical property have the impact can not be ignored.
If adopt conventional indoor sampling method, often there is following problem: 1, due to nonuniformity and the anisotropy of coal petrography, when test, need to drill through sample to different directions and test, and the out-of-shape of raw coal and clamp the reasons such as unstable causes in sampling direction tending to cause a deviation; 2, in drilling operation, slight vibrations all may make coal sample ftracture along crack, cause and sample unsuccessfully, even if be successfully drilled to complete sample, from coal in silid sillar, take out sample, also very difficult, and the situation that often causes damage to be drilled to sample occurs.3, coal petrography is all very responsive to temperature and water, conventional sampler all needs the cooling drill bit of water and carries landwaste outside, and coal sample is under the wetting emollescence of moisture, the cohesive force of the structural planes such as joint fissure reduces, the stiffness degradation of coal body, plasticity strengthens, when this has caused coal petrography sampling, can only sample with dry acquisition mode, drill bit not carried out to the cooling mode directly sampling.But bore sample in process at drilled dry, sample bedding normal off splits or is loose, and temperature of diamond bit is too high, has easily been burnt and affected the character of rock sample, and the sampling success ratio of this method is very low.These all make the test of coal bearing seams rock mechanics parameters become a difficult problem, have limited greatly site operation progress, have improved construction cost.
Three, summary of the invention:
The object of this invention is to provide the joint coal petrography dry type device of boring sample, it is for solving current coal petrography sampling process, the problem that sampling success ratio is low, cost is high, the sampling method that the present invention also provides this joint coal petrography dry type to bore sample device.
The technical solution adopted for the present invention to solve the technical problems is: the coal petrography dry type device of boring sample in this joint comprises cutter sweep and sampler, cutter sweep has cleavage block, cutting motor is arranged on the top of cleavage block, cutting wall one end is connected with cleavage block, the cutting wall other end is installed saw blade, between cleavage block and saw blade, arrangement for adjusting height is installed; Cleavage block also has cutting track, and slide rail base is connected with cutting track, and slide rail base is bidirectional sliding rail, and slide rail base can, along cutting rail moving, also can move along the direction perpendicular with cutting track, and base translation control handwheel is installed on slide rail base; The center of slide rail base is provided with rotating disk, and rotating disk has handwheel, and rock sample is placed on rotating disk; Rock sample clamp device is arranged on four angles of slide rail base, it is by telescopic clamping limb and holder clamping rock sample, holder is perpendicular type, telescopic clamping limb is level, the vertical component of holder is fixedly connected with telescopic clamping limb, and the horizontal component of holder tightens together with rock sample by bolt; On slide rail base, there is the thickness of cutting adjustable track perpendicular with cutting track, thickness of cutting control hand wheel is also installed on slide rail base;
Sampler comprises sampling base, clamping device, diamond sampling drill bit, openable transparent cover, refrigerating plant, blowning installation, exhaust fan, clamping device is arranged on fine setting track, fine setting track is fixed on sampling base, openable transparent cover is installed clamp device is covered, diamond sampling drill bit is arranged on rock sample machine and in transparent cover top, and diamond sampling drill bit is corresponding with clamping device; Refrigerating plant is arranged on the exit of blowning installation and is connected with blow-out nozzle by pipeline, and blow-out nozzle arranges in transparent cover, and exhaust fan communicates with transparent cover.
In such scheme, arrangement for adjusting height is hydraulic stem; Slide rail base is lathe carriage.
In such scheme, clamping device is clamper, and there is the rubber blanket of 5-10mm inside.
In such scheme, refrigerating plant is small-sized air conditioner, and blowning installation is fan blower or air compressor.
The bore sample sampling method of device of above-mentioned joint coal petrography dry type:
1, cutting
A, observation coal petrography, determine required sample direction and fracture strike, raw coal is placed on the rotating disk of cutter sweep by direction, fixes with clamp device, opens cutter sweep, and movable roundabout place base cuts;
B, for the first time cut after, remove base, take size Φ 25mm*50mm sample as example, regulating cutting thickness by cutting thickness regulating device is 27 ~ 28mm, and then cut, obtain required rectangular parallelepiped coal sample, the thickness of rectangular parallelepiped coal cinder should be greater than drill bit internal diameter and be less than outside diameter, take size Φ 25mm*50mm sample as example, cutting thickness should be 27-28mm;
2, sampling
A, by firm rock sample machine being fixed on very smooth table top, and open rock sample machine and observe its Vibration Condition, diamond sampling drill bit is installed after determining steadily, and is guaranteed that it is clean;
B, open transparent cover, rectangular parallelepiped rock sample is fixed with clamping device, and aimed at diamond sampling drill bit, then seal cover body, in coal petrography boring sample process, both sides respectively have the part drill bit of 1mm exposed in sample outside all the time;
C, open refrigerating plant and blowning installation, in the time that blow-out nozzle has cold air ejection, open rock sample machine and exhaust fan.
D, slowly transfer diamond sampling drill bit and carry out coal petrography sampling, the cold airflow of blow-out nozzle ejection can cooling diamond chisel bit and clean landwaste.
E, get into after Len req, close rock sample machine, refrigerating plant, blowning installation and exhaust fan, open transparent cover and clamping device, take off rock sample, cut with small electrical sawing, take out sample.
Beneficial effect:
1, the cutter sweep in the present invention is by being provided with base and the two-way clamping device of slide rail, strengthen the stability that out-of-shape coal petrography is cut, can effectively avoid in Rock and coal cutting process because coal cinder unstable and that cause comes off and coal petrography cracking, can accurately control again the cutting thickness of coal petrography, reach the object of precise cutting.
2, in the present invention, cutter sweep, by rotating disk is set on base, can carry out to coal petrography the cutting of different directions, obtains different directions rock sample, has met the requirement of test.
3, sampler of the present invention by arranging refrigerating plant, blowning installation, blow-out nozzle, exhaust apparatus in transparent cover, once form cooling air circulation system, can effective cleaning landwaste and dust, again can good cooling drill bit, prevent that it from burning drill bit because of temperature.
4,, in sampler of the present invention, by clamping device being arranged to rubber blanket and fine setting track, strengthened stability and the accuracy of device.Rubber blanket can make the stressed more reasonable of coal petrography, has prevented from causing because of discontinuity the situation that is caught broken sample to occur; Fine setting track can effectively be adjusted the position relationship of rock sample and diamond head, has avoided the generation of eccentric phenomena in drilling operation.
5, the present invention, by improving sampling method, adopts the exposed mode of bit part to creep in the time drilling through, and can effectively get rid of landwaste, avoids, because talus deposit causes sample to squeeze off or twists off, increasing again the cooling effectiveness of cold air to drill bit.
Four, accompanying drawing explanation:
Fig. 1 is the structural representation of cutter sweep in the present invention;
Fig. 2 is the structural representation of sampler in the present invention;
Fig. 3 is the schematic diagram that is related to of slide rail base in cutter sweep of the present invention, clamp device, rotating disk;
Fig. 4 is the schematic diagram of clamp device rotation in Fig. 3;
Fig. 5 is the schematic diagram of sampler sampling process of the present invention.
1. cutting motor 2. saw blade 3. arrangement for adjusting height 4. cut track 5. clamp device 6. rotating disk 7. slide rail base 8. thickness of cutting control hand wheel 9. base translation control handwheel 10. thickness of cutting adjustable track 11. rock sample machine 12. diamond sampling drill bit 13. clamping devices 14. and finely tune track 15. transparent cover 16. refrigerating plant 17. blowning installation 18. blow-out nozzle 19. exhaust fans 20. and sample base 21. tanks.
Five, embodiment:
Below in conjunction with accompanying drawing, the present invention is described further:
The coal petrography dry type device of boring sample in this joint comprises cutter sweep and sampler, cutter sweep has cleavage block, consult Fig. 1, cutting motor 1 is arranged on the top of cleavage block, and cutting motor 1 provides power, cutting wall one end is connected with cleavage block, the cutting wall other end is installed saw blade 2, between cleavage block and saw blade 2, arrangement for adjusting height 3 is installed, and arrangement for adjusting height 3 is hydraulic stem, saw blade 2 can switch, and saw blade 2 is Height Adjustable; Cleavage block also has cutting track 4, and slide rail base 7 is connected with cutting track 4, and slide rail base 7 is bidirectional sliding rail, and slide rail base 7 can be by lathe carriage system; Consulting Fig. 3, Fig. 4 slide rail base 7 can move along cutting track 4, also can move along the direction perpendicular with cutting track 4, can cut coal petrography along being parallel to saw blade 2 direction translations, also can, along sliding perpendicular to saw blade 2 directions, cut as requested the rock sample of precise thickness; Base translation control handwheel 9 is installed on slide rail base 7; The center of slide rail base 7 is provided with rotating disk 6, and rotating disk 6 has handwheel, and rock sample is placed on rotating disk 6, can regulate cut direction by rotating disk 6, then by clamp device 5, coal petrography be clamped.On rotating disk 6, there is scale, rotary angle controllable.
Rock sample clamp device 5 is arranged on 7 four angles of slide rail base, it is by telescopic clamping limb and holder clamping rock sample, holder is perpendicular type, telescopic clamping limb is level, the vertical component of holder is fixedly connected with telescopic clamping limb, the horizontal component of holder tightens together with rock sample by bolt, rock sample clamp device 5 can rotate within the scope of 90o, not only there is in the horizontal direction clamping, and can fix in the vertical direction rock sample, so fixing rock that can be more firm, avoid rocking, two can be fixed rock in irregular shape, thereby reach the object of precise cutting.In the time need to cutting the rock sample of different directions, be for example parallel to hugger direction and perpendicular to hugger direction, just can open clamp device 5, rotate rotating disk by handle, then clamp and cut.
On slide rail base 7, there is the thickness of cutting adjustable track 10 perpendicular with cutting track, thickness of cutting control hand wheel 8 is also installed on slide rail base 7.Slide rail base 7 is arranged on above cutting track 4, can control cutting speed by base translation control handwheel 9, and slide rail base 7 is controlled the thickness of trepanning by thickness of cutting control hand wheel 8.
Cut out different directions sillar by cutter sweep, sillar thickness is greater than diamond sampling drill bit 12 internal diameters, is less than its external diameter.Drill axis and sillar thickness direction bisector are overlapped, and like this in the time drilling through sample, will some drill bit exposed beyond sillar, this method can not produce counter productive to drilling operation.
Consult Fig. 2, sampler comprises sampling base 20, clamping device 13, diamond sampling drill bit 12, openable transparent cover 15, refrigerating plant 16, blowning installation 17, exhaust fan 19, clamping device 13 is clamper, there is the rubber blanket of 5-10mm inside, clamping device 13 be arranged on fine setting track on 14, fine setting track 14 is fixed on sampling base, and fine setting track 14 can regulate the position of coal sample cutting; Transparent cover 15 can be opened by a side, openable transparent cover 15 is installed clamping device 13 is covered, diamond sampling drill bit 12 is arranged on rock sample machine 11 lower ends and in transparent cover 15 tops, 12 of adamas augers are corresponding with clamping device 13, and diamond sampling drill bit 12 can free in and out by the hole of transparent cover 15 tops; Refrigerating plant 16 is small-sized air conditioner, blowning installation 17 is fan blower or air compressor, refrigerating plant 16 is arranged on the exit of blowning installation 17 and is connected with blow-out nozzle 18 by pipeline, and blow-out nozzle 18 arranges in transparent cover 15, and exhaust fan 19 communicates with transparent cover 15.In the time drilling through, by transparent cover 15, refrigerating plant 16, blowning installation 17 and exhaust fan 19 are coupled together to composition cooling air circulation system carries out coolingly landwaste being removed to drill bit exposed part via blow-out nozzle 18 at a certain angle simultaneously, in drilling operation, spraying refrigerating gas by blow-out nozzle 18 like this carries out cooling to diamond sampling drill bit 12, can also clean landwaste and dust simultaneously, pump out by exhaust fan 19 gas that contains dust and chip again, and pass in tank 21, prevent the diffusion of dust.Simultaneously different from conventional bit, diamond sampling drill bit has multiple holes to increase the effect of discharging landwaste.
Be illustrated in figure 5 drilling operation schematic diagram, be of a size of Φ 25mm*50mm rock sample as example to drill through, diamond sampling drill bit 12 sizes of employing should be internal diameter 25mm, external diameter 30mm, length 10mm.Therefore the rectangular parallelepiped rock sample thickness of obtaining by cutter sweep should be 27-28mm, like this in the process drilling through, because rock sample thickness is greater than drill bit internal diameter, stable in clamping situation, in vertical good situation, in drilling operation, part drill bit is exposed in rock sample outside, the refrigerating gas spraying by blow-out nozzle 18 just can carry out cooling to drill bit, avoid the too high drill bit that burns of temperature of diamond bit, landwaste and the dust that can also produce cutting clean, and add the hole on diamond head, can improve clean and cooling effect.In drilling operation, also should slow down drill speed, avoid creeping into the too fast test specimen causing and rock the situations such as the bit freezing that causes not in time with chip removal and occur.After rock sample successfully drills through, can directly cut taking-up with micro-machine.
Above-mentioned joint coal petrography dry type is bored sample the sampling method of device by cutter sweep and sampler two parts, closely be connected two processes, make up in routine sampling and cannot effectively avoid crack with precise cutting, be difficult for discharging the problems such as landwaste, and a kind of novel joint coal petrography cold gas sampling method forming, specific as follows:
1, cutting
A, observe large coal rock stratum face and hugger direction, as required coal petrography is placed on to the rotating disk 6 of cutter sweep by certain orientation, fix rock with clamp device 5, by locked thickness of cutting control hand wheel 8, prevent the skew in cutting process.Regulate again the height of saw blade 2 by arrangement for adjusting height 3 by rock height.
B, open cutting motor 1, rotating base translation control handwheel 9, makes slide rail base 7 carry out translation along cutting tracks 4, and rock is cut.Cut backed off after random saw blade 2, made slide rail base 7 translation 28mm by thickness of cutting control hand wheel 8 by scale, then by locked thickness of cutting control hand wheel 8, repeat above-mentioned cutting process.
2, sampling
A, rock sample machine 11 is placed on stably on cement surface, opens rock sample machine 11, observe shock conditions, check and whether steadily place, if sampling base 20 is not steady, should be fixed in more stably in rigid planar.Cleaning diamond chisel bit 12 is also installed drill bit.
B, open transparent cover 15, check clamping device 13, open and coal petrography sample is fixed, whether vertically reexamine sample, if out of plumb should be reconciled clamping device 13 and make it vertical.After fixing, by fine setting track 14, sample is aimed at diamond sampling drill bit 12, finally closed transparent cover 15.
C, open refrigerating plant 16 and blowning installation 17, when after blow-out nozzle ejection refrigerating gas, open sampler 11 and exhaust fan 19.
If the no problem drill bit of can transferring of d said process samples.
E, may out-of-flatness due to specimen surface, when beginning, to slowly put down diamond sampling drill bit 12, until drill bit is cut to coal petrography sample the inside completely, the refrigerating gas that working angles sprays by blow-out nozzle 18 comes cooling drill bit and clean landwaste and dust.
F, drilling process answer blunting of attention to drill through uniformly, avoid suddenly strengthening the faulty operation such as the pressure of the drill and acceleration.
G, getting into after needed length, close rock sample machine 11, stop completely Deng diamond sampling drill bit 12, slowly, carry diamond sampling drill bit 12, close refrigerating plant 16, blowning installation 17, exhaust fan 19, open transparent cover 15 and clamping device 13 takes off sillar, then take off gained rock sample with small-sized electric saw cutting.
Claims (5)
1. the joint coal petrography dry type device of boring sample, it is characterized in that: the coal petrography dry type device of boring sample in this joint comprises cutter sweep and sampler, cutter sweep has cleavage block, cutting motor (1) is arranged on the top of cleavage block, cutting wall one end is connected with cleavage block, the cutting wall other end is installed saw blade (2), and arrangement for adjusting height (3) is installed between cleavage block and saw blade (2); Cleavage block also has cutting track (4), slide rail base (7) is connected with cutting track (4), slide rail base (7) is bidirectional sliding rail, slide rail base (7) can be mobile along cutting track (4), also can move along the direction perpendicular with cutting track (4), base translation control handwheel (9) is installed on slide rail base (7); The center of slide rail base (7) is provided with rotating disk (6), and rotating disk (6) has handwheel, and rock sample is placed on rotating disk (6); Rock sample clamp device (5) is arranged on (7) four angles of slide rail base, it is by telescopic clamping limb and holder clamping rock sample, holder is perpendicular type, telescopic clamping limb is level, the vertical component of holder is fixedly connected with telescopic clamping limb, and the horizontal component of holder tightens together with rock sample by bolt; On slide rail base (7), there is the thickness of cutting adjustable track (10) perpendicular with cutting track, thickness of cutting control hand wheel (8) is also installed on slide rail base (7);
Sampler comprises sampling base (20), clamping device (13), diamond sampling drill bit (12), openable transparent cover (15), refrigerating plant (16), blowning installation (17), exhaust fan (19), clamping device is arranged on fine setting track (14), fine setting track (14) is fixed on sampling base, openable transparent cover (15) is installed clamping device (13) is covered, diamond sampling drill bit (12) is arranged on rock sample machine (11) and in transparent cover (15) top, diamond sampling drill bit (12) is corresponding with clamping device (13), refrigerating plant (16) is arranged on the exit of blowning installation (17) and is connected with blow-out nozzle (18) by pipeline, and blow-out nozzle (18) arranges in transparent cover (15), and exhaust fan (19) communicates with transparent cover (15).
2. the joint according to claim 1 coal petrography dry type device of boring sample, is characterized in that: described arrangement for adjusting height (3) is hydraulic stem; Slide rail base (7) is lathe carriage.
3. the joint according to claim 1 and 2 coal petrography dry type device of boring sample, is characterized in that: described clamping device (13) is clamper, and there is the rubber blanket of 5-10mm inside.
4. the joint according to claim 3 coal petrography dry type device of boring sample, is characterized in that: described refrigerating plant (16) is small-sized air conditioner, and blowning installation (17) is fan blower or air compressor.
5. the joint claimed in claim 1 coal petrography dry type sampling method of device of boring sample: it is characterized in that: coal petrography dry type the bore sample sampling method of device in this joint is as follows,
One, cutting
A, observation coal petrography, determine required sample direction and fracture strike, by direction, raw coal is placed on the rotating disk of cutter sweep, fixing with clamp device (5), opens cutter sweep, and movable roundabout (6) place base cuts;
B, for the first time cut after, remove base, take size Φ 25mm*50mm sample as example, regulating cutting thickness with cutting thickness control hand wheel is 27 ~ 28mm, and then cut, obtain required rectangular parallelepiped coal sample, the thickness of rectangular parallelepiped coal cinder should be greater than drill bit internal diameter and be less than outside diameter, take size Φ 25mm*50mm sample as example, cutting thickness should be 27-28mm;
Two, sampling
A, by firm rock sample machine (11) being fixed on very smooth table top, and open rock sample machine (11) and observe its Vibration Condition, diamond sampling drill bit (12) is installed after determining steadily, and is guaranteed that it is clean;
B, open transparent cover (15), rectangular parallelepiped rock sample is fixed with clamping device (13), and aimed at diamond sampling drill bit (12), then seal cover body, in coal petrography boring sample process, both sides respectively have the part drill bit of 1mm exposed in sample outside all the time;
C, open refrigerating plant (16) and blowning installation (17), in the time that blow-out nozzle has cold air ejection, open rock sample machine (11) and exhaust fan (19);
D, slowly transfer diamond sampling drill bit (12) and carry out coal petrography sampling, the cold airflow of blow-out nozzle (18) ejection can cooling diamond chisel bit (12) and clean landwaste;
E, get into after Len req, close rock sample machine (11), refrigerating plant (16), blowning installation (17) and exhaust fan (19), open transparent cover (15) and clamping device (13), take off rock sample, cut with small electrical sawing, take out sample.
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| CN201410107871.3A CN103837368B (en) | 2014-03-21 | 2014-03-21 | Joint coal petrography dry type is bored sample device and sampling method thereof |
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| CN201410107871.3A CN103837368B (en) | 2014-03-21 | 2014-03-21 | Joint coal petrography dry type is bored sample device and sampling method thereof |
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