CN115263208A - Device for accurately collecting drilling cuttings at drilling position and drilling cuttings collecting method - Google Patents
Device for accurately collecting drilling cuttings at drilling position and drilling cuttings collecting method Download PDFInfo
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- CN115263208A CN115263208A CN202211017560.9A CN202211017560A CN115263208A CN 115263208 A CN115263208 A CN 115263208A CN 202211017560 A CN202211017560 A CN 202211017560A CN 115263208 A CN115263208 A CN 115263208A
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- drill rod
- drilling
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- drilling machine
- hollow
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- 238000005553 drilling Methods 0.000 title claims abstract description 204
- 238000005520 cutting process Methods 0.000 title claims abstract description 40
- 238000000034 method Methods 0.000 title claims abstract description 25
- 239000007787 solid Substances 0.000 claims abstract description 153
- 239000003245 coal Substances 0.000 claims abstract description 36
- 239000002817 coal dust Substances 0.000 claims abstract description 14
- 238000005303 weighing Methods 0.000 claims abstract description 10
- 238000005259 measurement Methods 0.000 claims abstract description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 14
- 239000000843 powder Substances 0.000 claims description 12
- 229910052742 iron Inorganic materials 0.000 claims description 7
- 238000007599 discharging Methods 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 4
- 239000000428 dust Substances 0.000 abstract 1
- 238000012544 monitoring process Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
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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
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/01—Arrangements for handling drilling fluids or cuttings outside the borehole, e.g. mud boxes
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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
- E21B10/00—Drill bits
- E21B10/42—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits
- E21B10/43—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits characterised by the arrangement of teeth or other cutting elements
-
- 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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
- E21B17/042—Threaded
-
- 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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
- E21B17/046—Couplings; joints between rod or the like and bit or between rod and rod or the like with ribs, pins, or jaws, and complementary grooves or the like, e.g. bayonet catches
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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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
- E21B17/1085—Wear protectors; Blast joints; Hard facing
-
- 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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/22—Rods or pipes with helical structure
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
A device for accurately collecting drilling cuttings at a drilling position and a drilling cuttings method are disclosed, wherein the device comprises a drilling machine, a solid drill rod, a hollow drill rod and a cuttings collector; the method comprises the following steps: connecting a drilling machine and a first solid drill rod, when the drilling machine drills to a set length, releasing the connection to enable the first solid drill rod to stay in a drill hole, connecting a first hollow drill rod and the drilling machine, coaxially advancing with the first solid drill rod, continuously advancing until the first hollow drill rod is coaxially sleeved outside a helical blade, stopping advancing when the set length is reached, and releasing the connection; and taking one of other solid drill rods to be connected with a drilling machine, connecting the rear end of the first hollow drill rod with a chip collector, and weighing and recording the pulverized coal which is drilled into the solid drill rod and discharged by the helical blade and enters the chip collector. The hollow drill rod effectively prevents collapse coal dust from mixing into the dust collector, and the measurement accuracy is improved; for coal bodies with large water content, the solid drill rods and the hollow drill rods are alternately pushed to reach a deeper coal body layer, so that the application range of the drilling cutting method is widened.
Description
Technical Field
The invention relates to a device for accurately collecting drilling cuttings at a drilling position and a drilling cuttings collecting method, and belongs to the technical field of coal mine safety.
Background
The drilling cutting method is a method for constructing and drilling holes in a coal seam and identifying impact risks according to the amount of coal dust discharged per meter and the change rule of the coal dust, and is widely applied to monitoring of coal mine rock burst.
Most of the existing drilling cutting methods are implemented by breaking coal and drilling through a coal drill bit, a twist drill rod rotates to discharge coal dust, and the coal dust is connected with an orifice and weighed. The implementation process needs simple equipment and is convenient to operate, but in the implementation process, the hole wall of the drilled hole is easy to collapse, so that the accurate collection of the coal dust amount is influenced; in addition, when the water content of the coal body is high, the problem that the drilling cutting method fails because the coal powder discharging difficulty of the twist drill rod in a long distance is high and the drilling cutting method cannot be implemented to a specified depth exists.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a device and a method for accurately collecting the drilling cuttings amount at a drilling position, the device and the method can accurately collect the coal dust amount, can solve the problem of failure of a drilling cuttings method caused by high water content of coal, and improve the monitoring precision and the application range of the drilling cuttings method.
In order to achieve the aim, the invention provides a device for accurately collecting the drilling cuttings amount at a drilling position, which comprises a drilling machine, a solid drill rod, a hollow drill rod and a cuttings collector, wherein the solid drill rod is arranged on the drill rod;
the solid drill rods comprise a first solid drill rod and other solid drill rods, wherein the front end of the first solid drill rod is connected with a drill bit, and the rear end of the first solid drill rod is connected with the front end of a drilling machine or other solid drill rods; other solid drill rods are detachably connected; the outer circumferences of the first solid drill rod and the other solid drill rods are respectively distributed with a first helical blade along the axial direction of the first solid drill rod and the other solid drill rods;
the hollow drill rod comprises a first hollow drill rod and other hollow drill rods, wherein the rear end of the first hollow drill rod is connected with the front end of a drilling machine or other hollow drill rods; other hollow drill rods are detachably connected; the outer circumferences of the first hollow drill rod and the other hollow drill rods are respectively distributed with a second helical blade along the axial direction of the outer circumferences of the first hollow drill rod and the other hollow drill rods;
the inner diameters of the first hollow drill rod and the other hollow drill rods are larger than the outer diameter of a spiral cavity formed by the first spiral blade, and the outer diameter of the spiral cavity is slightly smaller than the outer diameter of the first drill bit; the outer diameter of a spiral cavity formed by the spiral blade II is equal to that of the drill bit I;
the chip collector is positioned below the rear end port of the first hollow drill rod or other hollow drill rods.
Furthermore, a second drill bit is further arranged at the front end of the first hollow drill rod and comprises a plurality of blades circumferentially distributed along the outer circumference of the first hollow drill rod, and the outer diameter of a circular cavity formed by the blades is equal to that of the first drill bit.
Further, the scrap collector comprises an upper hanging part, a middle scrap collecting part and a lower weighing part; the upper hanging part comprises a pair of arc plates which are symmetrically arranged, the tops of the arc plates are bonded through a magnet I, a circular space formed by the arc plates is matched with the outer diameter of the hollow drill rod, the bottom ends of the two arc plates are respectively connected to the upper end of an iron pipe below the side where the arc plates are located through a bolt I in a rotating mode, the lower end of the iron pipe is connected with the middle chip collecting part through a telescopic hose, an opening in the upper end of the middle chip collecting part is communicated with an inner cavity of the upper hanging part, and a coal powder containing cavity is arranged below the opening in the upper end of the middle chip collecting part; the lower weighing part is positioned below the coal powder containing cavity and comprises an electronic scale, the electronic scale is bonded with one side of the bottom of the coal powder containing cavity through a second magnet, and the opposite side of the electronic scale is connected through a second bolt.
Furthermore, the rear end of the first solid drill rod is provided with a convex square handle, the front ends of other solid drill rods are provided with concave square handle bayonets, the rear end of the other solid drill rods is provided with a convex square handle, and the square handle bayonet are in clamping fit.
Furthermore, the rear end of the first hollow drill rod is provided with an external thread section, the front ends of other hollow drill rods are provided with an internal thread sleeve section, the rear end of the other hollow drill rods is provided with an external thread section, and the external thread section is matched with the internal thread sleeve section.
Further, the inner wall of the hollow drill rod is provided with a wear-resistant layer.
Further, the solid drill rod and the hollow drill rod are equal in length.
A method of accurately collecting cuttings for drilling locations, comprising the steps of:
1) Connecting the rear end of the first solid drill rod with a drilling machine, starting the drilling machine, driving the first solid drill rod and a drill bit to drill forwards in the coal seam by the drilling machine, closing the drilling machine when the drilling length reaches a set distance, stopping drilling, removing the connection between the first solid drill rod and the drilling machine, and keeping the first solid drill rod in the drill hole; coal dust generated during the drilling of the first solid drill pipe is not collected and weighed;
2) The rear end of the first hollow drill rod is connected with a drilling machine through a converter, the drilling machine is started, the drilling machine drives the first hollow drill rod to advance coaxially with the first solid drill rod along a drill hole excavated by the first solid drill rod and the first drill bit, and the first hollow drill rod is coaxially sleeved outside the first helical blade along with continuous advancing; when the propelling length reaches the drilling length of the first solid drill rod in the step 1), closing the drilling machine, stopping propelling, and removing the connection between the first hollow drill rod and the drilling machine, wherein the first hollow drill rod is reserved in the drill hole; a small amount of coal dust generated during the propelling of the first hollow drill rod is discharged from the rear end port of the first hollow drill rod through the second helical blade;
3) Taking one other solid drill rod, connecting the rear end of the other solid drill rod with a drilling machine through a square handle, starting the drilling machine, idling for 30-60 seconds, emptying the coal powder generated by pushing the first hollow drill rod through a first helical blade, and closing the drilling machine; clamping and connecting the square handle bayonet at the front end of the other solid drill rod with the square handle at the rear end of the first solid drill rod, connecting a chip collector below the rear end port of the first hollow drill rod, starting the drilling machine, driving the first solid drill rod to continue to drill forwards by the other solid drill rod, closing the drilling machine when the drilling reaches a set length, stopping drilling, removing the connection between the other solid drill rod and the drilling machine, and keeping the other solid drill rod in the hole; discharging the cut coal powder to a chip collector through a screw blade and a rear end port of the first hollow drill rod during drilling for weighing and recording;
4) Removing the chip collector, taking one other hollow drill rod, enabling the other solid drill rods and the other hollow drill rods to alternately and repeatedly work in a circulating mode according to the working modes of the step 2) and the step 3), and stopping drilling chip measurement until the designed drilling depth value is reached;
5) After the measurement of the drill cuttings is finished, removing the chip collector, connecting the solid drill rod closest to the drilling machine with the drilling machine, starting the drilling machine to rotate reversely, and closing the drilling machine and removing the connection between the solid drill rod and the drilling machine when the withdrawing length of the solid drill rod is equal to the drilling distance of the first solid drill rod in the step 1); connecting a drilling machine with a hollow drill rod closest to the drilling machine, starting the drilling machine to rotate reversely, and closing the drilling machine and removing the connection between the hollow drill rod and the drilling machine when the withdrawing length of the hollow drill rod is driven to reach the withdrawing distance of the solid drill rod; and the drilling machine is connected with the solid drill rod closest to the drilling machine again, the drilling machine is started to rotate reversely, the solid drill rod is driven to withdraw by the withdrawal length of the hollow drill rod, the drilling machine is closed, the solid drill rod is disconnected from the drilling machine, the hollow drill rod closest to the drilling machine is connected again, and the operation is repeated in a circulating mode to alternately drive the solid drill rods and the hollow drill rods until all the drill rods withdraw from the drilling hole, and the whole drilling cutting program is finished.
Further, the set distance of the drilling length in the step 1) is 1 meter.
According to the invention, the solid drill rod and the hollow drill rod are arranged, the solid drill rod comprises a first solid drill rod and other solid drill rods, and helical blades for discharging pulverized coal in the drilling process are respectively distributed on the outer circumferences of the first solid drill rod and other solid drill rods along the axial direction of the outer circumferences of the first solid drill rod and other solid drill rods; the hollow drill rods comprise a first hollow drill rod and other hollow drill rods, and helical blades for discharging pulverized coal are respectively distributed on the outer circumferences of the first hollow drill rod and the other hollow drill rods along the axial direction of the first hollow drill rod and the other hollow drill rods; the drilling machine is connected with the first solid drill rod for drilling, when the drilling machine drills to a set length, the connection between the drilling machine and the first solid drill rod is removed, the first solid drill rod is stopped in a drill hole, the first hollow drill rod is connected with the drilling machine through the converter and coaxially pushed forward with the first solid drill rod, the pushing is stopped along with the continuous forward pushing until the first hollow drill rod is coaxially sleeved outside the helical blade and reaches the set length, the connection between the drilling machine and the first solid drill rod is removed, and the discharged coal dust is not collected; one of the other solid drill rods is connected with a drilling machine, a chip collector is connected at the rear end port of the first hollow drill rod, at the moment, the solid drill rod drills, and pulverized coal discharged by the helical blades enters the chip collector to be weighed and recorded, the first hollow drill rod effectively prevents drill holes from collapsing in the process, and accurate collection of the pulverized coal amount is guaranteed; solid drilling rod and hollow drilling rod impel so in turn, until being under construction to involving the degree of depth, hollow drilling rod has played the effect that prevents the drilling and collapse all the time, even if there is the part at this in-process to collapse, then the helical blade discharge that accessible hollow drilling outside set up, effectively avoided the buggy that collapses to sneak into album bits ware, improved the measuring accuracy greatly. To the coal body that water content is big, solid drilling rod and hollow drill rod impel in turn, can reach darker coal body in situ, and can discharge the long distance helical blade that the buggy formed through a plurality of drilling rods jointly, have improved the application scope of drill chip method greatly.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a cross-sectional view along AA of FIG. 1;
FIG. 3 is a schematic structural view of a solid drill pipe;
FIG. 4 is a schematic structural view of a first hollow drill rod;
FIG. 5 is a schematic structural view of another hollow drill rod;
fig. 6 is a schematic view of the structure of the chip collector.
In the figure: 1. the device comprises a drilling machine 2, a solid drill rod 3, a hollow drill rod 301, a wear-resistant layer 4, a chip collector 401, an arc-shaped plate 402, a first magnet 403, a first bolt 404, an iron pipe 405, a flexible hose 406, a coal powder containing cavity 407, an electronic scale 408, a second magnet 409, a second bolt 5, a first drill bit 6, a first helical blade 7, a second helical blade 8 and a second drill bit 8.
Detailed Description
The invention will be further described with reference to the accompanying drawings.
As shown in figure 1, the device for accurately collecting the amount of cuttings at a drilling position comprises a drilling machine 1, a solid drill rod 2, a hollow drill rod 3 and a cuttings collector 4;
as shown in fig. 3, the solid drill pipes 2 comprise a first solid drill pipe and other solid drill pipes, wherein the front end of the first solid drill pipe is connected with the first drill bit 5, and the rear end of the first solid drill pipe is connected with the front end of the drilling machine 1 or other solid drill pipes; other solid drill rods are detachably connected; helical blades I6 are distributed on the outer circumferences of the first solid drill rod and the other solid drill rods respectively along the axial direction of the outer circumferences of the first solid drill rod and the other solid drill rods;
as shown in fig. 4 and 5, the hollow drill rods 3 comprise a first hollow drill rod and other hollow drill rods, wherein the rear end of the first hollow drill rod is connected with the front end of the drilling machine 1 or other hollow drill rods; other hollow drill rods are detachably connected; the outer circumferences of the first hollow drill rod and the other hollow drill rods are respectively distributed with a second helical blade 7 along the axial direction;
as shown in fig. 2, the inner diameter of each of the first hollow drill rod and the other hollow drill rods is larger than the outer diameter of the spiral cavity formed by the first spiral blade 6, and the outer diameter of each of the first hollow drill rod and the other hollow drill rods is slightly smaller than the outer diameter of the first drill bit 5; the outer diameter of a spiral cavity formed by the second spiral blade 7 is equal to the outer diameter of the first drill bit 5;
as shown in fig. 1, the chip collector 4 is located below the rear end port of the first hollow drill rod or other hollow drill rod.
As shown in fig. 4, in order to make the hollow drill rod 3 advance better and to make the hollow drill rod 3 be taken back more smoothly after drilling is completed, the front end of the first hollow drill rod is further provided with a second drill bit 8, the second drill bit 8 comprises a plurality of blades distributed along the circumferential direction of the outer circumference of the first hollow drill rod, and the outer diameter of a circular cavity formed by the plurality of blades is equal to the outer diameter of the first drill bit 5.
As shown in fig. 6, in order to facilitate the installation and the disassembly of the chip collector 4, the chip collector 4 comprises an upper hanging part, a middle chip collecting part and a lower weighing part; the upper hanging part comprises a pair of arc plates 401 which are symmetrically arranged, the tops of the arc plates 401 are bonded through a magnet I402, a circular space formed by the arc plates is matched with the outer diameter of the hollow drill rod 3, the bottom ends of the two arc plates 401 are rotatably connected to the upper end of an iron pipe 404 below the side where the arc plates are located through a bolt I403 respectively, the lower end of the iron pipe 404 is connected with the middle chip collecting part through a telescopic hose 405, an opening at the upper end of the middle chip collecting part is communicated with an inner cavity of the upper hanging part, and a coal powder containing cavity 406 is arranged below the opening at the upper end of the middle chip collecting part; the lower weighing part is positioned below the pulverized coal containing cavity 406 and comprises an electronic scale 407, the electronic scale 407 is bonded with one side of the bottom of the pulverized coal containing cavity 406 through a second magnet 408, and the opposite side is connected through a second bolt 409.
As shown in fig. 1 and 3, as a structural form for facilitating connection between solid drill rods and a drilling machine, the rear end of the first solid drill rod is provided with a convex square handle, the front ends of other solid drill rods are provided with concave square handle bayonets, the rear end of the other solid drill rods is provided with a convex square handle, and the square handle is tightly matched with the square handle bayonets.
As shown in fig. 4 and 5, as a structure form for facilitating connection between the hollow drill rods and the drilling machine, the rear end of the first hollow drill rod is provided with an external thread section, the front ends of the other hollow drill rods are provided with internal thread sleeve sections, and the rear ends of the other hollow drill rods are provided with external thread sections which are matched with the internal thread sleeve sections.
As shown in fig. 2, in order to improve the wear resistance of the hollow drill rod 3, the inner wall of the hollow drill rod 3 is provided with a wear resistant layer 301.
In a preferred embodiment, the solid drill rod 2 and the hollow drill rod 3 are equal in length.
A method of accurately collecting drill cuttings for drilling locations, comprising the steps of:
1) Connecting the rear end of the first solid drill rod with a drilling machine 1, starting the drilling machine 1, driving the first solid drill rod and a drill bit to drill forwards in a coal seam by the drilling machine 1, closing the drilling machine 1 when the drilling length reaches a set distance, stopping drilling, removing the connection between the first solid drill rod and the drilling machine 1, and keeping the first solid drill rod in a drill hole; coal dust generated during the drilling of the first solid drill pipe is not collected and weighed;
2) The rear end of the first hollow drill rod is connected with a drilling machine 1 through a converter, the drilling machine 1 is started, the drilling machine 1 drives the first hollow drill rod to advance coaxially with the first solid drill rod along a first solid drill rod and a drill hole excavated by a first drill bit, and the first hollow drill rod is coaxially sleeved outside the first helical blade 6 along with continuous advancing; when the propelling length reaches the drilling length of the first solid drill rod in the step 1), closing the drilling machine 1, stopping propelling, and removing the connection between the first hollow drill rod and the drilling machine 1, wherein the first hollow drill rod is reserved in the drill hole; a small amount of pulverized coal generated during the propelling of the first hollow drill rod is discharged from the port at the rear end of the first hollow drill rod through the second helical blade 7;
3) Taking one other solid drill rod, connecting the rear end of the other solid drill rod with the drilling machine 1 through a square handle, starting the drilling machine 1, idling for 30-60 seconds, emptying coal powder generated by pushing the first hollow drill rod through the first helical blade 6, and closing the drilling machine 1; the bayonet of the square handle at the front end of the other solid drill rod is connected with the square handle at the rear end of the first solid drill rod in a clamping manner, after the chip collector 4 is connected below the rear end port of the first hollow drill rod, the drilling machine 1 is started, the other solid drill rod drives the first solid drill rod to continue to drill forwards, when the drill reaches a set length, the drilling machine 1 is closed, the drilling is stopped, the connection between the other solid drill rod and the drilling machine 1 is released, and the other solid drill rod is kept in the hole; discharging the cut coal powder to a chip collector 4 through a first helical blade 6 through a rear end port of a first hollow drill rod during drilling, and weighing and recording;
4) Removing the chip collector 4, taking one other hollow drill rod, enabling the other solid drill rods and the other hollow drill rods to alternately and repeatedly work in a reciprocating mode according to the working modes of the step 2) and the step 3), and stopping drilling chip measurement until the designed drilling depth value is reached;
5) After the measurement of the drill cuttings is finished, removing the scrap collector 4, connecting the solid drill rod closest to the drilling machine 1 with the drilling machine 1, starting the drilling machine 1 to rotate reversely, driving the solid drill rod to withdraw for the same length as the drilling distance of the first solid drill rod in the step 1), closing the drilling machine 1, and removing the connection between the solid drill rod and the drilling machine 1; connecting the drilling machine 1 with the hollow drill rod closest to the drilling machine 1, starting the drilling machine 1 to rotate reversely, and closing the drilling machine 1 and removing the connection between the hollow drill rod and the drilling machine 1 when the withdrawing length of the hollow drill rod is driven to reach the withdrawing distance of the solid drill rod; the drilling machine 1 is connected with the solid drill rod closest to the drilling machine 1 again, the drilling machine 1 is started to rotate reversely, when the solid drill rod is driven to withdraw by the withdrawal length of the hollow drill rod, the drilling machine 1 is closed, the solid drill rod is disconnected from the drilling machine 1, the hollow drill rod closest to the solid drill rod is connected again, and the operation is repeated in a circulating mode to alternately drive the solid drill rods and the hollow drill rods until all the drill rods withdraw from the drilling hole, and the whole drilling cutting program is finished.
As a preferred embodiment, the set distance of the drilling length in step 1) is 1 meter.
Claims (9)
1. A device for accurately collecting the drilling cuttings amount at a drilling position comprises a drilling machine (1) and is characterized by also comprising a solid drill rod (2), a hollow drill rod (3) and a cuttings collector (4);
the solid drill rod (2) comprises a first solid drill rod and other solid drill rods, wherein the front end of the first solid drill rod is connected with the first drill bit (5), and the rear end of the first solid drill rod is connected with the front end of the drilling machine (1) or other solid drill rods; other solid drill rods are detachably connected; the outer circumferences of the first solid drill rod and the other solid drill rods are respectively distributed with a first helical blade (6) along the axial direction;
the hollow drill rod (3) comprises a first hollow drill rod and other hollow drill rods, wherein the rear end of the first hollow drill rod is connected with the front end of the drilling machine (1) or other hollow drill rods; other hollow drill rods are detachably connected; the outer circumferences of the first hollow drill rod and the other hollow drill rods are respectively distributed with a second helical blade (7) along the axial direction;
the inner diameters of the first hollow drill rod and the other hollow drill rods are larger than the outer diameter of a spiral cavity formed by the first helical blade (6), and the outer diameter of the first hollow drill rod is slightly smaller than the outer diameter of the first drill bit (5); the outer diameter of a spiral cavity formed by the second spiral blade (7) is equal to that of the first drill bit (5);
the chip collector (4) is positioned below the rear end port of the first hollow drill rod or other hollow drill rods.
2. The device for accurately collecting the drilling position cuttings according to claim 1, wherein the front end of the first hollow drill rod is further provided with a second drill bit (8), the second drill bit (8) comprises a plurality of blades circumferentially distributed along the outer circumference of the first hollow drill rod, and the outer diameter of a circular cavity formed by the plurality of blades is equal to the outer diameter of the first drill bit (5).
3. A device for accurately collecting the amount of cuttings at a drilling site according to claim 1 or 2, wherein the cuttings collector (4) comprises an upper suspended portion, a middle cuttings collecting portion and a lower weighing portion; the upper hanging part comprises a pair of arc plates (401) which are symmetrically arranged, the tops of the arc plates are bonded through a magnet I (402), a circular space formed by the arc plates is matched with the outer diameter of the hollow drill rod (3), the bottom ends of the two arc plates (401) are respectively connected to the upper end of an iron pipe (404) below the side where the arc plates are located in a rotating mode through a bolt I (403), the lower end of the iron pipe (404) is connected with the middle chip collecting part through a flexible hose (405), an opening in the upper end of the middle chip collecting part is communicated with an inner cavity of the upper hanging part, and a coal powder containing cavity (406) is arranged below the opening in the upper end of the middle chip collecting part; the lower weighing part is positioned below the coal dust containing cavity (406) and comprises an electronic scale (407), the electronic scale (407) is bonded with one side of the bottom of the coal dust containing cavity (406) through a second magnet (408), and the opposite side of the electronic scale is connected through a second bolt (409).
4. The device for accurately collecting the drilling cuttings amount at the drilling position according to claim 3, wherein the rear end of the first solid drill rod is provided with a convex square handle, the front ends of the other solid drill rods are provided with concave square handle bayonets, the rear end of the other solid drill rods is provided with a convex square handle, and the square handle is in clamping fit with the square handle bayonets.
5. The device for accurately collecting the drilling cuttings at the drilling position according to claim 3, wherein the rear end of the first hollow drill rod is provided with an external thread section, the front ends of the other hollow drill rods are provided with an internal thread sleeve section, the rear ends of the other hollow drill rods are provided with external thread sections, and the external thread sections are matched with the internal thread sleeve section.
6. A device for accurately collecting the amount of cuttings at the drilling site as claimed in claim 3, characterised in that the inner wall of the hollow drill rod (3) is provided with a wear layer (301).
7. A device for accurately collecting the amount of cuttings at the drilling site as claimed in claim 3, wherein the length of the solid drill rod (2) is equal to the length of the hollow drill rod (3).
8. A method of collecting drill cuttings using an apparatus for accurately collecting drill cuttings at a drilling location according to any one of claims 1 to 7, comprising the steps of:
1) The rear end of the first solid drill rod is connected with a drilling machine (1), the drilling machine (1) is started, the drilling machine (1) drives the first solid drill rod and a first drill bit (5) to drill forwards in a coal seam, when the drilling length reaches a set distance, the drilling machine (1) is closed, the drilling is stopped, the connection between the first solid drill rod and the drilling machine (1) is released, and the first solid drill rod is reserved in a drill hole; coal dust generated during the drilling of the first solid drill pipe is not collected and weighed;
2) The rear end of the first hollow drill rod is connected with a drilling machine (1) through a converter, the drilling machine (1) is started, the drilling machine (1) drives the first hollow drill rod to advance coaxially with the first solid drill rod along a drill hole excavated by the first solid drill rod and a first drill bit (5), and the first hollow drill rod is coaxially sleeved outside the first helical blade (6) along with continuous advancing; when the propelling length reaches the drilling length of the first solid drill rod in the step 1), closing the drilling machine (1), stopping propelling, and removing the connection between the first hollow drill rod and the drilling machine (1), wherein the first hollow drill rod is reserved in the drill hole; a small amount of pulverized coal generated during the propelling of the first hollow drill rod is discharged from the port at the rear end of the first hollow drill rod through the second helical blade (7);
3) Taking one other solid drill rod, connecting the rear end of the solid drill rod with the drilling machine (1) through a square handle, starting the drilling machine (1), idling for 30-60 seconds, emptying pulverized coal generated by the propulsion of the first hollow drill rod through a first helical blade (6), and closing the drilling machine (1); the bayonet of the square handle at the front end of the other solid drill rod is connected with the square handle at the rear end of the first solid drill rod in a clamping manner, after the chip collector (4) is connected below the rear end port of the first hollow drill rod, the drilling machine (1) is started, the other solid drill rod drives the first solid drill rod to continuously drill forwards, when the drill rod drills to a set length, the drilling machine (1) is closed, the drilling is stopped, the connection between the other solid drill rod and the drilling machine (1) is released, and the other solid drill rod is reserved in the hole; discharging the cut coal powder to a chip collector (4) through a first helical blade (6) through a rear end port of a first hollow drill rod during drilling, and weighing and recording;
4) Removing the chip collector (4), taking one other hollow drill rod, enabling the other solid drill rods and the other hollow drill rods to alternately and repeatedly work in a circulating manner according to the working modes of the step 2) and the step 3) until the designed drilling depth is reached, and stopping measuring the drill cuttings;
5) After the measurement of the drill cuttings is finished, removing the chip collector (4), connecting the solid drill rod (2) closest to the drilling machine (1) with the drilling machine (1), starting the drilling machine (1) to rotate reversely, and closing the drilling machine (1) when the withdrawing length of the solid drill rod (2) is driven to be equal to the drilling distance of the first solid drill rod in the step 1), and removing the connection between the solid drill rod and the drilling machine (1); connecting the drilling machine (1) with the hollow drill rod (3) closest to the drilling machine, starting the drilling machine (1) to rotate reversely, and closing the drilling machine (1) when the withdrawing length of the hollow drill rod (3) is driven to reach the withdrawing distance of the solid drill rod (2), and releasing the connection between the hollow drill rod (3) and the drilling machine (1); the drilling machine (1) is connected with the solid drill rod (2) closest to the drilling machine again, the drilling machine (1) is started to rotate reversely, the solid drill rod (2) is driven to withdraw by the withdrawal length of the hollow drill rod (3), the drilling machine (1) is closed, the hollow drill rod (3) closest to the drilling machine (1) is connected again after the solid drill rod (2) is disconnected from the drilling machine (1), and the solid drill rod (2) and the hollow drill rod (3) are driven to reciprocate in a circulating mode until all the drill rods withdraw from the drilling hole, and the whole drilling cutting program is finished.
9. The method for accurately collecting drill cuttings at a drilling position according to claim 8, wherein the set distance of the drilling length in the step 1) is 1 meter.
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| US5048620A (en) * | 1989-08-07 | 1991-09-17 | Maher Kevin P | Method for air rotary drilling of test wells |
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| CN115263208B (en) | 2024-03-19 |
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