CN117072095A - Coring while drilling device and method for coal bed gas content measurement - Google Patents
Coring while drilling device and method for coal bed gas content measurement Download PDFInfo
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- CN117072095A CN117072095A CN202311344815.7A CN202311344815A CN117072095A CN 117072095 A CN117072095 A CN 117072095A CN 202311344815 A CN202311344815 A CN 202311344815A CN 117072095 A CN117072095 A CN 117072095A
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- 238000005553 drilling Methods 0.000 title claims abstract description 144
- 239000003245 coal Substances 0.000 title claims abstract description 55
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000005259 measurement Methods 0.000 title claims abstract description 16
- 238000005070 sampling Methods 0.000 claims abstract description 129
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 26
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 26
- 241001330002 Bambuseae Species 0.000 claims description 26
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 26
- 239000011425 bamboo Substances 0.000 claims description 26
- 230000001105 regulatory effect Effects 0.000 claims description 14
- 230000005540 biological transmission Effects 0.000 claims description 7
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 4
- 230000007246 mechanism Effects 0.000 abstract description 2
- 238000005065 mining Methods 0.000 abstract description 2
- 239000002344 surface layer Substances 0.000 abstract description 2
- 241001074085 Scophthalmus aquosus Species 0.000 description 8
- 238000000691 measurement method Methods 0.000 description 3
- 238000000605 extraction Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 238000003795 desorption Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 230000009965 odorless effect Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- 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
- E21B25/02—Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors the core receiver being insertable into, or removable from, the borehole without withdrawing the drilling pipe
- E21B25/04—Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors the core receiver being insertable into, or removable from, the borehole without withdrawing the drilling pipe the core receiver having a core forming cutting edge or element, e.g. punch type core barrels
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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)
Abstract
The invention belongs to the technical field of mining machinery equipment, and particularly relates to a coal seam gas content measurement coring while drilling device and method. According to the invention, the sampling assembly is arranged, the baffle can shield the second drilling barrel firstly during sampling, so that coal on the surface layer is prevented from entering the second drilling barrel, along with the increase of the drilling depth, when the designated depth is reached, the hydraulic telescopic rod can be shortened slowly, the coal bed with the designated depth can enter the second drilling barrel after being drilled down by the second drilling barrel and is clamped by the sampling clamping jaws, and finally, the sampling core and the sampling plate and other mechanisms are taken out together through the lifting rope, so that the sampling operation of the coal bed is realized under the condition that the first drilling barrel and the second drilling barrel are not required to be withdrawn, and the sampling efficiency is improved.
Description
Technical Field
The invention belongs to the technical field of mining machinery equipment, and particularly relates to a device and a method for measuring the gas content of a coal seam while drilling and coring.
Background
The gas is a harmful gas mainly composed of coal bed gas in mines and is sometimes singly methane. The gas is colorless, odorless and can burn or explode, is difficult to dissolve in water and has higher diffusivity than air. Gas is nontoxic, but can cause choking when the concentration is high. The gas content of the coal bed is basic data for determining the gas emission amount of the mine, and is an important parameter for mine ventilation and gas drainage design. The existing coal seam gas content measurement can be divided into an indirect measurement method and a direct measurement method, wherein the indirect measurement method mainly is used for measuring other gas parameters of a coal seam, and the gas content of the coal seam is calculated through the relation between the gas content and the parameters. The direct determination method is to take a coal sample through drilling and determine the actual gas content of the coal sample by using a desorption method to determine the gas content of the coal layer.
For example, in one chinese patent with publication number CN115949361B, a coring device and a coring method during coal seam gas content measurement are proposed, which comprises a supporting frame, a sliding seat is arranged on the upper portion of the supporting frame, a driving hollow rotating rod is arranged on the upper portion of the sliding seat, and a coring bit is connected to the front end of the driving hollow rotating rod in a threaded manner. However, the invention has the following disadvantages in actual operation:
in the drilling process, along with the increase of the drilling depth, the coal bed can gradually enter the hollow transmission rotating rod, and the hollow transmission rotating rod is lack of a proper cleaning device, so that the sample core of the coal bed with the specified depth is required to be obtained, and the sample core of the coal bed with the specified depth can be continuously obtained only by taking out the coal in the hollow transmission rotating rod, so that the coal bed with the specified depth is very troublesome.
Therefore, it is necessary to provide a coring device and a coring method while drilling for measuring the gas content in a coal seam to solve the above problems.
Disclosure of Invention
The invention provides a device and a method for measuring the gas content of a coal seam while drilling and coring to solve the problems in the background art.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a coal seam gas content measurement coring device while drilling, includes the base, the top level of base is provided with the regulating plate, the bottom of regulating plate is equipped with two sets of supporting legs, two sets of supporting legs all with the top fixed connection of base, and the top and the regulating plate bottom of one set of supporting legs are articulated together, articulated between the bottom of regulating plate and the base top have hydraulic push rod, the top level of regulating plate is provided with first brill section of thick bamboo, the one end that hydraulic push rod was kept away from to first brill section of thick bamboo rotates and has cup jointed first fixed plate, first fixed plate and regulating plate top vertical fixed connection, the surface that hydraulic push rod one end was kept away from to first brill section of thick bamboo runs through and has seted up the bin outlet, and the fixed cover that has cup jointed of position that splashproof cover is relative with the bin outlet, the bottom slope of splashproof cover is equipped with the stock guide plate, guide plate and first fixed connection, the other end rotation of first brill section of thick bamboo has run through and has been pegged graft second brill section of thick bamboo, second brill section of thick bamboo is located the surface screw thread that first brill section of thick bamboo, and auger blade laminating with the inner wall of first brill section of thick bamboo;
be provided with sampling assembly in the second bore section of thick bamboo, the second bores the one end that section of thick bamboo is located the first outside of boring section of thick bamboo and rotates and cup joints the second fixed plate, the bottom of second fixed plate is connected with the slider, the spout has been seted up to the position that regulating plate top and slider are relative, and slider slidable mounting is in the spout, be connected with power component between second fixed plate and the first fixed plate, and one side that first bore section of thick bamboo was kept away from to the second fixed plate is equipped with drive assembly in addition, the one end fixedly connected with solid fixed ring that hydraulic putter was kept away from to first bore section of thick bamboo, be provided with drive assembly between solid fixed ring inboard and the second bore section of thick bamboo outer wall.
Further, the sampling assembly comprises a circular positioning plate, a hydraulic telescopic rod is vertically and fixedly connected to the circle center of one side of the positioning plate, a circular sampling plate is fixedly sleeved on the hydraulic telescopic rod, the sampling plate is sleeved on a non-telescopic part of the hydraulic telescopic rod, a plurality of first micro piston pumps are annularly arranged on the circumferential surfaces of the sampling plate and the positioning plate, the sampling plate and the first micro piston pumps on the positioning plate are in one-to-one correspondence, positioning grooves are formed in positions, opposite to the first micro piston pumps, on the inner wall of the second drilling barrel, of the positioning grooves are parallel to the hydraulic telescopic rod, the first micro piston pumps are arranged in the corresponding positioning grooves, a plurality of sampling clamping jaws are vertically and fixedly connected to the edge positions of one side of the sampling plate, far away from the positioning plate, of the sampling clamping jaws are annularly distributed, the side of the sampling clamping jaw, which is close to the rotation direction of the first drilling barrel, is designed as an inclined plane, a deflection groove is formed in one side of the sampling clamping jaw, which is close to the hydraulic telescopic rod, the deflection groove is close to the free end of the sampling clamping jaw, a clamping plate is arranged in the deflection groove, one side of the clamping plate, which is close to the sampling plate, is hinged with the inner wall of the deflection groove, a second miniature piston pump is connected between one side of the clamping plate, which is far away from the hydraulic telescopic rod, and the deflection groove, a circular baffle is vertically and fixedly connected with one side of the hydraulic telescopic rod, which is far away from the hydraulic telescopic rod, a conical bulge is fixedly connected with the baffle, notches are formed in positions, which are opposite to the sampling clamping jaws, the sampling clamping jaws are spliced in the corresponding notches, and the free ends of the sampling clamping jaws are flush with one side of the baffle, which is close to the conical bulge, in an initial state, one end of the locating plate, which is far away from the hydraulic telescopic rod, is rotationally connected with a lifting rope, one end of the lifting rope, which is positioned outside the second drilling barrel, is connected with an electric winch, and the electric winch is installed at the top of the adjusting plate.
Further, the power component comprises a screw rod, the screw rod is vertically threaded and inserted on the second fixing plate in a penetrating mode, one end of the screw rod is vertically and rotatably connected with the first fixing plate, and the other end of the screw rod is connected with a first motor.
Further, the drive assembly includes the second motor, the top of second motor is equipped with the mounting panel, mounting panel fixed connection is on the second fixed plate, and the second motor is installed on the mounting panel, first gear has been cup jointed on the output shaft of second motor, the second bores a section of thick bamboo and the relative surface annular of first gear and is provided with first tooth, and first gear and first tooth meshing.
Further, the transmission assembly comprises a plurality of second gears, the second gears are vertically and fixedly arranged on one side, close to the fixed ring, of the second fixed plate, the second gears are annularly distributed on the inner side of the fixed ring, second teeth are uniformly arranged on the inner side of the fixed ring, third teeth are annularly arranged at the position, opposite to the second gears, of the second drill barrel, and the second gears are simultaneously meshed with the second teeth and the third teeth.
Further, the one end that the second bore section of thick bamboo is close to the second fixed plate rotates and has cup jointed the sleeve pipe, fixed third fixed plate of having cup jointed on the sleeve pipe, the bottom fixed connection of third fixed plate and mounting panel, the sheathed tube bottom has run through and has seted up the sample hole, the guard plate is installed to sample hole department.
Further, one end of the first drill cylinder and one end of the second drill cylinder, which are close to the first fixing plate, are flush, and the end of the first drill cylinder is flush with the conical protrusion in the initial state.
Furthermore, the free end of the clamping plate is provided with an inclined plane bulge at one side close to the hydraulic telescopic rod, and the inclined plane bulge can be completely positioned in the deflection groove in an initial state.
The invention also provides a sampling method using the coring device while drilling for measuring the gas content of the coal seam, which comprises the following steps:
step one: the base is moved to drive the first drilling barrel and the second drilling barrel at the top of the base to move to the appointed position;
step two: the angle of the adjusting plate is adjusted, so that the first drilling barrel and the second drilling barrel can incline downwards;
step three: the lifting rope is extended, so that the structures such as the positioning plate, the hydraulic telescopic rod, the sampling plate and the sampling clamping jaw can slide downwards along the second drilling barrel until the baffle is flush with the drilling end of the second drilling barrel;
step four: starting a positioning plate and a first miniature piston pump on the sampling plate to tightly squeeze the positioning plate and the first miniature piston pump with the inner wall of the second drilling barrel, so as to fix the positions of the sampling plate and the sampling clamping jaw;
step five: when the first drilling barrel and the second drilling barrel drill to the appointed depth, the first drilling barrel and the second drilling barrel keep drilling, the hydraulic telescopic rod is shortened, and at the moment, along with continuous drilling of the second drilling barrel, a sample core can enter the second drilling barrel;
step six: starting a second miniature piston pump to enable the clamping plate to rotate out of the deflection groove, so that the drilled sample core is subjected to annular cutting and clamping operation along with the continuous rotation of the second drill barrel;
step seven: stopping drilling and closing the first micro piston pump, thereby releasing the fixing of the sampling plate and the sampling clamping jaw, and then retracting the lifting rope, thereby taking the drilled sample core out of the second drilling barrel;
step eight: repeating the third step to the seventh step to finish the sampling operation with different depths.
The invention has the technical effects and advantages that:
1. according to the invention, the sampling assembly is arranged, the baffle can shield the second drilling barrel firstly during sampling, so that coal on the surface layer is prevented from entering the second drilling barrel, along with the increase of the drilling depth, the hydraulic telescopic rod can be slowly shortened when the designated depth is reached, the coal bed with the designated depth can enter the second drilling barrel after being drilled down by the second drilling barrel and is clamped by the sampling clamping jaws, and finally, the sampling core and the sampling plate and other mechanisms are taken out together through the lifting rope, so that the sampling operation of the coal bed is realized under the condition that the first drilling barrel and the second drilling barrel are not required to be withdrawn, and the sampling efficiency is improved;
2. through being provided with the sleeve pipe, when the in-process of taking a sample, when need not guarantee the integrality of appearance core, when moving to the sample hole position under the drive of sampling clamping jaw along with the appearance core, can open the guard plate, and directly can get into the piece in the space between the sampling clamping jaw with the appearance core through the sample hole and take out, thereby avoided taking out the sample subassembly completely from the second bore section of thick bamboo in, improved the extraction efficiency of appearance core, and when the integrality of appearance core needs to be guaranteed, can take out the sample subassembly completely from the second bore section of thick bamboo in, and take down the appearance core from the free end position of a plurality of sampling clamping jaws, and then guarantee the integrality of appearance core.
Drawings
FIG. 1 is a first perspective view of the present invention;
FIG. 2 is a second perspective view of the present invention;
FIG. 3 is a perspective cross-sectional view of a first drill barrel of the present invention;
FIG. 4 is an enlarged view of portion A of FIG. 3 in accordance with the present invention;
FIG. 5 is a schematic perspective view of a sampling assembly and lift cord of the present invention;
FIG. 6 is a schematic perspective view of a sampling plate, sampling jaw and clamping plate of the present invention;
fig. 7 is a schematic perspective view of a clamping plate and a second micro piston pump of the present invention.
In the figure: 1. a base; 2. an adjusting plate; 3. a hydraulic push rod; 4. a first drill barrel; 5. a first fixing plate; 6. a splash guard; 7. a material guide plate; 8. a second drill barrel; 9. auger blades; 10. a second fixing plate; 11. a slide block; 12. a fixing ring; 13. a positioning plate; 14. a hydraulic telescopic rod; 15. sampling a template; 16. a first micro piston pump; 17. sampling clamping jaws; 18. a clamping plate; 19. a second micro piston pump; 20. a baffle; 21. a conical protrusion; 22. a lifting rope; 23. an electric winch; 24. a screw; 25. a first motor; 26. a second motor; 27. a mounting plate; 28. a first gear; 29. a second gear; 30. a sleeve; 31. a third fixing plate; 32. and (5) protecting the plate.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the embodiments.
The invention provides a coal seam gas content measurement coring device as shown in figures 1 to 7, which comprises a base 1, wherein the top of the base 1 is horizontally provided with an adjusting plate 2, the bottom of the adjusting plate 2 is provided with two groups of supporting legs, the two groups of supporting legs are fixedly connected with the top of the base 1, the top of one group of supporting legs is hinged with the bottom of the adjusting plate 2, a hydraulic push rod 3 is hinged between the bottom of the adjusting plate 2 and the top of the base 1, the top of the adjusting plate 2 is horizontally provided with a first drilling barrel 4, one end of the first drilling barrel 4 far away from the hydraulic push rod 3 is rotatably sleeved with a first fixing plate 5, the first fixing plate 5 is vertically and fixedly connected with the top of the adjusting plate 2, the surface of one end of the first drilling barrel 4 far away from the hydraulic push rod 3 is provided with a discharge hole in a penetrating way, the position of the first drilling barrel 4 opposite to the discharge hole is fixedly sleeved with a splash guard 6, the bottom of the splash guard 6 is obliquely provided with a guide plate 7, the guide plate 7 is fixedly connected with the first fixing plate 5, the other end of the first drilling barrel 4 is rotatably inserted with a second drilling barrel 8, the second drilling barrel 8 is rotatably inserted with a blade 9 in the first drilling barrel 4, and the blade 9 is positioned in the first drilling barrel is provided with a screw thread 9;
a sampling component is arranged in the second drilling barrel 8, one end of the second drilling barrel 8 positioned outside the first drilling barrel 4 is rotatably sleeved with a second fixing plate 10, the bottom of the second fixing plate 10 is connected with a sliding block 11, the position of the top of the adjusting plate 2 opposite to the sliding block 11 is provided with a sliding groove, the sliding block 11 is slidably arranged in the sliding groove, a power component is connected between the second fixing plate 10 and the first fixing plate 5, one side of the second fixing plate 10 away from the first drilling barrel 4 is additionally provided with a driving component, one end of the first drilling barrel 4 away from the hydraulic push rod 3 is fixedly connected with a fixing ring 12, a transmission component is arranged between the inner side of the fixing ring 12 and the outer wall of the second drilling barrel 8, the power component comprises a screw 24, the screw 24 is vertically threaded and inserted on the second fixing plate 10, one end of the screw 24 is vertically and rotatably connected with the first fixing plate 5, the other end of the screw 24 is connected with a first motor 25, the driving assembly comprises a second motor 26, a mounting plate 27 is arranged at the top of the second motor 26, the mounting plate 27 is fixedly connected to a second fixing plate 10, the second motor 26 is arranged on the mounting plate 27, a first gear 28 is sleeved on an output shaft of the second motor 26, a first tooth is annularly arranged on the surface of the second drill cylinder 8 opposite to the first gear 28, the first gear 28 is meshed with the first tooth, the driving assembly comprises a plurality of second gears 29, the plurality of second gears 29 are vertically and fixedly arranged on one side, close to the fixing ring 12, of the second fixing plate 10, the plurality of second gears 29 are annularly distributed on the inner side of the fixing ring 12, second teeth are uniformly arranged on the inner side of the fixing ring 12, a third tooth is annularly arranged on the position, opposite to the second gear 29, of the second drill cylinder 8, and the second gears 29 are simultaneously meshed with the second teeth and the third teeth;
when sampling is carried out, the base 1 is moved to a target area to be drilled, then the hydraulic push rod 3 is started to gradually extend, so that one end of the adjusting plate 2 away from the first fixing plate 5 is gradually deflected upwards, the drill bits of the first drill barrel 4 and the second drill barrel 8 are gradually deflected downwards, when the included angle between the first drill barrel 4 and the ground is not less than fifteen degrees, the hydraulic push rod 3 is stopped to extend, then the sampling assembly is installed in the second drill barrel 8, then the downward end of the sampling assembly is flush with the drill bit part of the second drill barrel 8 and positions the drill bit part, then the second motor 26 is started to drive the second drill barrel 8 to rotate through the cooperation of the first gear 28 and the first teeth, and along with the rotation of the second drill barrel 8, the second drill barrel 8 can drive a plurality of second gears 29 to rotate through third teeth on the surface of the second drill barrel 8, and along with the rotation of the second gear 29, the second gear 29 can drive the fixed ring 12 and the first drill barrel 4 to reversely rotate through the transmission action of the second gear, after the rotation speed of the first drill barrel 4 and the second drill barrel 8 is stable, the first motor 25 is started to drive the second fixed plate 10 and the sliding block 11 to gradually move obliquely downwards along the chute direction through the screw 24, in the process, when the first drill barrel 4 and the second drill barrel 8 are contacted with a coal seam, the first drill barrel 4 and the second drill barrel 8 simultaneously drill the coal seam, at the moment, the coal seam cannot enter the second drill barrel 8 because the drilling end of the second drill barrel 8 is blocked by the sampling assembly, meanwhile, along with the drilling of the first drill barrel 4, the coal seam can enter the position between the first drill barrel 4 and the second drill barrel 8, at the moment, the rotation of the second drill barrel 8, the auger blade 9 on the second drill cylinder 8 can convey the drilled coal to the direction of the discharge hole, and when the coal reaches the position of the discharge hole, the coal can be discharged out of the first drill cylinder 4 through the discharge hole and falls onto the guide plate 7 under the action of the splash guard 6;
along with the continuous drilling of the first drilling barrel 4 and the second drilling barrel 8, when the second drilling barrel 8 drills to a designated depth, the sampling assembly is gradually shortened while the second drilling barrel 8 is kept continuously drilling, at the moment, a sample core taken down by the second drilling barrel 8 can gradually enter the second drilling barrel 8 and is not clamped by the sampling assembly, then the first motor 25 and the second motor 26 are closed, and then the sampling assembly is taken out of the second drilling barrel 8 together with the sample core, so that the sampling operation of a coal seam is realized without withdrawing the first drilling barrel 4 and the second drilling barrel 8, and the sampling efficiency is improved;
when the sampling is required to be continued, the sampling assembly is reinstalled in the second drilling barrel 8 and slid downwards to a position flush with the drilling end of the second drilling barrel 8, and then positioned, the drilling operation can be continued according to the operation until the designated depth is reached for sub-sampling and subsequent multiple sampling.
As shown in fig. 1 to 7, the sampling assembly comprises a circular positioning plate 13, a hydraulic telescopic rod 14 is vertically and fixedly connected to the center of one side of the positioning plate 13 close to the first fixed plate 5, a circular sampling plate 15 is fixedly sleeved on the hydraulic telescopic rod 14, the sampling plate 15 is sleeved on the non-telescopic part of the hydraulic telescopic rod 14, a plurality of first micro piston pumps 16 are annularly arranged on the circumferential surfaces of the sampling plate 15 and the positioning plate 13, the sampling plate 15 and the first micro piston pumps 16 on the positioning plate 13 are in one-to-one correspondence, positioning grooves are respectively formed in positions, opposite to the first micro piston pumps 16, on the inner wall of the second drilling barrel 8, parallel to the hydraulic telescopic rod 14, and the first micro piston pumps 16 are arranged in the corresponding positioning grooves, a plurality of sampling clamping jaws 17 are vertically and fixedly connected to the edge positions, far away from one side of the positioning plate 13, of the sampling plate 15, and the plurality of sampling clamping jaws 17 are annularly distributed, the side of the sampling clamping jaw 17, which is close to the rotation direction of the first drilling barrel 4, is designed as an inclined plane, a deflection groove is formed in the side of the sampling clamping jaw 17, which is close to the hydraulic telescopic rod 14, the deflection groove is close to the free end of the sampling clamping jaw 17, a clamping plate 18 is arranged in the deflection groove, one side of the clamping plate 18, which is close to the sampling plate 15, is hinged with the inner wall of the deflection groove, a second micro piston pump 19 is connected between one side of the clamping plate 18, which is far from the hydraulic telescopic rod 14, and the deflection groove, a circular baffle 20 is vertically and fixedly connected with one end of the hydraulic telescopic rod 14, which is far from the positioning plate 13, a conical bulge 21 is fixedly connected with one side of the baffle 20, gaps are formed in positions, which are opposite to the plurality of sampling clamping jaws 17 are spliced in the corresponding gaps, and the free end of the sampling clamping jaw 17 is flush with one side of the baffle 20, which is close to the conical bulge 21, in an initial state, one end of the positioning plate 13 far away from the hydraulic telescopic rod 14 is rotationally connected with a lifting rope 22, one end of the lifting rope 22 positioned outside the second drilling barrel 8 is connected with an electric winch 23, the electric winch 23 is arranged at the top of the adjusting plate 2, one ends of the first drilling barrel 4 and the second drilling barrel 8 close to the first fixing plate 5 are flush, the end of the first drilling barrel 4 is also flush with a conical bulge 21 in an initial state, one side of the free end of the clamping plate 18 close to the hydraulic telescopic rod 14 is provided with an inclined bulge, and the inclined bulge in the initial state can be completely positioned in a deflection groove;
when sampling is carried out, after the drilling angles of the first drilling barrel 4 and the second drilling barrel 8 are adjusted, the sampling plate 15 and the sampling clamping jaw 17 are placed into the second drilling barrel 8, then the lifting rope 22 on the electric winch 23 is gradually released, the sampling plate 15 and the sampling clamping jaw 17 slide downwards along the positioning groove on the inner wall of the second drilling barrel 8 under the action of gravity, when the baffle 20 is flush with the drilling end of the second drilling barrel 8, the electric winch 23 is closed, the first micro piston pump 16 on the positioning plate 13 and the sampling plate 15 is started, the positioning plate 13 and the inner wall of the positioning groove are gradually stretched and squeezed together, so that the positions of the first positioning plate 13 and the sampling plate 15 are fixed, the second motor 26 is started, the second drilling barrel 8 and the first drilling barrel 4 are driven to rotate simultaneously, after the rotation speed of the first drilling barrel 4 and the second drilling barrel 8 are stabilized, the first motor 25 is started, the second fixing plate 10 and the slide 11 are driven to gradually move downwards along the direction of the sliding groove through the screw 24, and in the process, and the first drilling barrel 4, the second drilling barrel 21 and the second drilling barrel 8 are contacted with the first drilling barrel 21 and the second drilling barrel 8, the coal seam 8 and the coal seam 8 are continuously contacted with the first drilling barrel 21 and the second drilling barrel 8, and the coal seam 8;
when the specified depth is reached, the hydraulic telescopic rod 14 is slowly shortened while the first drill barrel 4 and the second drill barrel 8 continue to drill, at the moment, the baffle 20 can move towards the direction close to the positioning plate 13 under the drive of the hydraulic telescopic rod 14, and along with the continuous drilling of the second drill barrel 8, the coal seam can gradually enter the second drill barrel 8, at the moment, the sampling clamping jaws 17 are also in a rotating state under the drive of the second drill barrel 8, so that the sampling clamping jaws 17 can cut the sample core entering the second drill barrel 8 through the inclined surfaces of the sampling clamping jaws 17, so that the sample core can be surrounded by the sampling clamping jaws 17, and after the hydraulic telescopic rod 14 is completely contracted, the first motor 25 is closed to keep the second drilling barrel 8 rotating, then the second micro piston pumps 19 are started to push the clamping plate 18 out of the deflection groove, the inclined surface protrusions on the clamping plate 18 can cut the outer surface of the sample core in a ring mode along with the rotation of the second drilling barrel 8 along with the contact of the clamping plate 18 with the sample core, the cutting position of the sample core is easier to break from a coal bed outside the second drilling barrel 8, then the second motor 26 is closed, the first piston pumps are closed at the same time, the locking operation of the positioning plate 13 and the sample plate 15 is released, then the electric winch 23 is started, and the sample plate 15, the sampling clamping jaw 17 and the sample core are taken out of the second drilling barrel 8 together through the lifting rope 22;
when the coal seam needs to be sampled for multiple times, the operations can be repeated to finish the sampling for multiple times, so that the coal seam sampling operation is realized without withdrawing the first drilling barrel 4 and the second drilling barrel 8, and the sampling efficiency is improved.
As shown in fig. 1 and 2, one end of the second drill cylinder 8, which is close to the second fixing plate 10, is rotatably sleeved with a sleeve 30, a third fixing plate 31 is fixedly sleeved on the sleeve 30, the third fixing plate 31 is fixedly connected with the bottom of the mounting plate 27, a sampling hole is formed in the bottom of the sleeve 30 in a penetrating manner, and a protection plate 32 is arranged at the sampling hole;
through being provided with sleeve pipe 30, when the in-process of taking a sample, when need not guarantee the integrality of appearance core, when moving to the sample hole position under the drive of sampling clamping jaw 17 along with the appearance core, can open guard plate 32 to directly can get into the piece in the space between the sampling clamping jaw 17 with the appearance core through the sample hole and take out, thereby avoided taking out the sample subassembly completely from second bore section of thick bamboo 8, improved the extraction efficiency of appearance core, and when the integrality of appearance core needs to be guaranteed, can take out the sample subassembly completely from second bore section of thick bamboo 8, and take down the appearance core from the free end position of a plurality of sampling clamping jaws 17, and then guarantee the integrality of appearance core.
The invention also provides a sampling method using the coring device while drilling for measuring the gas content of the coal seam, which comprises the following steps:
step one: the base 1 is moved to drive the first drilling barrel 4 and the second drilling barrel 8 at the top of the base to move to the appointed position;
step two: adjusting the angle of the adjusting plate 2 so that the first drill barrel 4 and the second drill barrel 8 can be inclined downward;
step three: extending the lifting rope 22 to enable the positioning plate 13, the hydraulic telescopic rod 14, the sampling plate 15, the sampling clamping jaw 17 and other structures to slide downwards along the second drilling barrel 8 until the baffle 20 is flush with the drilling end of the second drilling barrel 8;
step four: starting the positioning plate 13 and the first micro piston pump 16 on the sampling plate 15 to tightly press the first micro piston pump and the inner wall of the second drilling barrel 8, so as to fix the positions of the sampling plate 15 and the sampling clamping jaw 17;
step five: when the first drill cylinder 4 and the second drill cylinder 8 drill to a designated depth, the first drill cylinder 4 and the second drill cylinder 8 are kept drilling, and meanwhile, the hydraulic telescopic rod 14 is shortened, and at the moment, along with continuous drilling of the second drill cylinder 8, a sample core can enter the second drill cylinder 8;
step six: starting the second micro piston pump 19 to enable the clamping plate 18 to rotate out of the deflection groove, so that the drilled sample core is subjected to annular cutting and clamping operation along with the continued rotation of the second drill cylinder 8;
step seven: stopping drilling and turning off the first micro piston pump 16 to unseat the sampling plate 15 and sampling jaw 17, and then retracting the lift cord 22 to remove the drilled core from the second barrel 8;
step eight: repeating the third step to the seventh step to finish the sampling operation with different depths.
The above embodiments are only for illustrating the technical solution of the present invention, and are not limiting.
Claims (10)
1. The utility model provides a coal seam gas content survey coring device while drilling, includes base (1), its characterized in that: the utility model discloses a drilling machine, including base (1) and a first auger (8) and a second auger (8) is provided with a screw thread, the top level of base (1) is provided with regulating plate (2), the bottom of regulating plate (2) is equipped with two sets of supporting legs, two sets of supporting legs all with the top fixed connection of base (1), and the top of one of them sets of supporting legs is articulated together with regulating plate (2) bottom, articulated between the bottom of regulating plate (2) and base (1) top has hydraulic push rod (3), the top level of regulating plate (2) is provided with first auger (4), the one end that hydraulic push rod (3) were kept away from to first auger (4) rotates and cup joints first fixed plate (5), first fixed plate (5) are perpendicular fixed connection with regulating plate (2) top, the surface that hydraulic push rod (3) one end was kept away from to first auger (4) runs through and has seted up the bin outlet, and the relative position fixed cup joint of first auger (4) and bin outlet has cup jointed splash guard (6), the slope of the bottom of splash guard (6) is equipped with guide (7), guide (7) and first auger (5) are kept away from first auger (8) and are connected with first auger (8) and are located first auger (8), and the auger blade (9) is attached to the inner wall of the first drill cylinder (4).
2. A coal seam gas content measurement coring device as set forth in claim 1, wherein: be provided with sampling assembly in second bore section of thick bamboo (8), second bore section of thick bamboo (8) are located the one end rotation that first bore section of thick bamboo (4) is outside and has cup jointed second fixed plate (10), the bottom of second fixed plate (10) is connected with slider (11), spout has been seted up in the position that regulating plate (2) top is relative with slider (11), and slider (11) slidable mounting is in the spout, be connected with power component between second fixed plate (10) and first fixed plate (5), and one side that first bore section of thick bamboo (4) was kept away from to second fixed plate (10) is equipped with drive assembly in addition, one end fixedly connected with solid fixed ring (12) that hydraulic push rod (3) was kept away from to first bore section of thick bamboo (4), be provided with drive assembly between solid fixed ring (12) inboard and second bore section of thick bamboo (8) outer wall.
3. A coal seam gas content measurement coring device as set forth in claim 2, wherein: the sampling assembly comprises a circular locating plate (13), the circle center of the locating plate (13) close to one side of a first fixed plate (5) is vertically and fixedly connected with a hydraulic telescopic rod (14), a circular sampling plate (15) is fixedly sleeved on the hydraulic telescopic rod (14), the sampling plate (15) is sleeved on a non-telescopic part of the hydraulic telescopic rod (14), a plurality of first micro piston pumps (16) are annularly arranged on the circumferential surfaces of the sampling plate (15) and the locating plate (13), the sampling plate (15) and the first micro piston pumps (16) on the locating plate (13) are in one-to-one correspondence, locating grooves are formed in positions, opposite to the first micro piston pumps (16), on the inner wall of a second drilling cylinder (8), the locating grooves are parallel to the hydraulic telescopic rod (14), the first micro piston pumps (16) are installed in the corresponding locating grooves, and a plurality of clamping jaws (17) are vertically and fixedly connected to the edge positions of one side of the sampling plate (15) away from the locating plate (13).
4. A coal seam gas content measurement coring device as set forth in claim 3, wherein: the sampling clamping jaws (17) are annularly distributed, one side of the sampling clamping jaws (17) close to the rotation direction of the first drilling barrel (4) is designed to be an inclined plane, a deflection groove is formed in one side of the sampling clamping jaws (17) close to the hydraulic telescopic rod (14), the deflection groove is close to the free end of the sampling clamping jaws (17), a clamping plate (18) is arranged in the deflection groove, one side of the clamping plate (18) close to the sampling plate (15) is hinged to the inner wall of the deflection groove, a second micro piston pump (19) is connected between one side of the clamping plate (18) far away from the hydraulic telescopic rod (14) and the deflection groove, one end of the hydraulic telescopic rod (14) far away from the positioning plate (13) is vertically and fixedly connected with a circular baffle plate (20), one side of the baffle plate (20) far away from the hydraulic telescopic rod (14) is fixedly connected with a conical bulge (21), gaps are formed in positions of the baffle plate (20) and a plurality of sampling clamping jaws (17) opposite to each other, the sampling clamping jaws (17) are spliced in the corresponding gaps, one side of the clamping jaw (17) far away from the electric telescopic rod (21) is connected with one end of the winch (22) far away from the hydraulic telescopic rod (13), the electric winch (23) is arranged at the top of the adjusting plate (2).
5. A coal seam gas content measurement coring device as set forth in claim 4, wherein: the power assembly comprises a screw (24), the screw (24) is vertically threaded and inserted on the second fixing plate (10), one end of the screw (24) is vertically and rotatably connected with the first fixing plate (5), and the other end of the screw (24) is connected with a first motor (25).
6. A coal seam gas content measurement coring device as set forth in claim 5, wherein: the driving assembly comprises a second motor (26), a mounting plate (27) is arranged at the top of the second motor (26), the mounting plate (27) is fixedly connected to a second fixing plate (10), the second motor (26) is arranged on the mounting plate (27), a first gear (28) is sleeved on an output shaft of the second motor (26), first teeth are annularly arranged on the surface, opposite to the first gear (28), of the second drilling barrel (8), and the first gear (28) is meshed with the first teeth.
7. A coal seam gas content measurement coring device as set forth in claim 6, wherein: the transmission assembly comprises a plurality of second gears (29), the second gears (29) are vertically and fixedly arranged on one side, close to the fixed ring (12), of the second fixed plate (10), the second gears (29) are annularly distributed on the inner side of the fixed ring (12), second teeth are uniformly arranged on the inner side of the fixed ring (12), third teeth are annularly arranged at positions, opposite to the second gears (29), of the second drilling barrel (8), and the second gears (29) are simultaneously meshed with the second teeth and the third teeth; one end of the second drilling barrel (8) close to the second fixing plate (10) is rotatably sleeved with a sleeve (30), a third fixing plate (31) is fixedly sleeved on the sleeve (30), the third fixing plate (31) is fixedly connected with the bottom of the mounting plate (27), a sampling hole is formed in the bottom of the sleeve (30) in a penetrating mode, and a protection plate (32) is arranged at the sampling hole.
8. A coal seam gas content measurement coring device as set forth in claim 7, wherein: one end of the first drill cylinder (4) and one end of the second drill cylinder (8) close to the first fixing plate (5) are flush, and the end of the first drill cylinder (4) is also flush with the conical bulge (21) in the initial state.
9. A coal seam gas content measurement coring device as set forth in claim 8, wherein: the free end of the clamping plate (18) is provided with an inclined plane bulge at one side close to the hydraulic telescopic rod (14), and the inclined plane bulge can be completely positioned in the deflection groove in the initial state.
10. A sampling method using a coal seam gas content measurement coring while drilling device as recited in claim 9, wherein: the method comprises the following steps:
step one: the base (1) is moved to drive the first drilling barrel (4) and the second drilling barrel (8) at the top of the base to move to the appointed position;
step two: the angle of the adjusting plate (2) is adjusted, so that the first drill cylinder (4) and the second drill cylinder (8) can incline downwards;
step three: extending the lifting rope (22) to enable the positioning plate (13), the hydraulic telescopic rod (14), the sampling plate (15) and the sampling clamping jaw (17) to slide downwards along the second drilling barrel (8) until the baffle plate (20) is flush with the drilling end of the second drilling barrel (8);
step four: starting a first micro piston pump (16) on the positioning plate (13) and the sampling plate (15) to be tightly squeezed with the inner wall of the second drilling barrel (8), so as to fix the positions of the sampling plate (15) and the sampling clamping jaw (17);
step five: when the first drilling barrel (4) and the second drilling barrel (8) drill to a designated depth, the first drilling barrel (4) and the second drilling barrel (8) are kept drilling, the hydraulic telescopic rod (14) is shortened, and at the moment, a sample core can enter the second drilling barrel (8) along with continuous drilling of the second drilling barrel (8);
step six: starting the second miniature piston pump (19) to enable the clamping plate (18) to be rotated out of the deflection groove, so that the drilled sample core is subjected to annular cutting and clamping operation along with the continuous rotation of the second drilling barrel (8);
step seven: stopping drilling and closing the first micro piston pump (16) to release the position of the sampling plate (15) and the sampling clamping jaw (17), and then retracting the lifting rope (22) to take the drilled sample core out of the second drilling barrel (8);
step eight: repeating the third step to the seventh step to finish the sampling operation with different depths.
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