CN115234186B - Combined coring drilling machine and working method thereof - Google Patents
Combined coring drilling machine and working method thereof Download PDFInfo
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- CN115234186B CN115234186B CN202210968478.8A CN202210968478A CN115234186B CN 115234186 B CN115234186 B CN 115234186B CN 202210968478 A CN202210968478 A CN 202210968478A CN 115234186 B CN115234186 B CN 115234186B
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- 238000005553 drilling Methods 0.000 title claims abstract description 56
- 238000000034 method Methods 0.000 title claims abstract description 16
- 239000002893 slag Substances 0.000 claims abstract description 56
- 238000007599 discharging Methods 0.000 claims abstract description 40
- 239000002689 soil Substances 0.000 claims abstract description 6
- 230000005540 biological transmission Effects 0.000 claims description 19
- 238000005259 measurement Methods 0.000 claims description 8
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 230000003068 static effect Effects 0.000 claims description 3
- 239000011435 rock Substances 0.000 abstract description 3
- 239000003638 chemical reducing agent Substances 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000010276 construction Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000010959 steel Substances 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
-
- 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
- E21B10/60—Drill bits characterised by conduits or nozzles for drilling fluids
-
- 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
-
- 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
- E21B17/18—Pipes provided with plural fluid passages
-
- 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
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
- E21B19/08—Apparatus for feeding the rods or cables; Apparatus for increasing or decreasing the pressure on the drilling tool; Apparatus for counterbalancing the weight of the rods
- E21B19/086—Apparatus for feeding the rods or cables; Apparatus for increasing or decreasing the pressure on the drilling tool; Apparatus for counterbalancing the weight of the rods with a fluid-actuated cylinder
-
- 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
-
- 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
- E21B4/00—Drives for drilling, used in the borehole
- E21B4/06—Down-hole impacting means, e.g. hammers
- E21B4/14—Fluid operated hammers
-
- 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
- E21B47/00—Survey of boreholes or wells
- E21B47/02—Determining slope or direction
- E21B47/022—Determining slope or direction of the borehole, e.g. using geomagnetism
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (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)
- Mechanical Engineering (AREA)
- Geophysics (AREA)
- Earth Drilling (AREA)
Abstract
The invention provides a combined coring drilling machine, which combines a down-the-hole hammer, a secondary drill rod and a secondary drill bit, realizes quick drilling through the down-the-hole hammer, realizes coring through the secondary drill rod and the secondary drill bit, realizes alternate execution of quick drilling and coring, and meets the requirement of long-distance sectional coring. When the down-the-hole hammer drills rapidly, the high-pressure medium enters the face through a down-the-hole hammer medium channel on the down-the-hole hammer and a central channel II on the secondary drill rod, and then the high-pressure medium carries slag soil to enter the slag discharging channel through the reverse circulation channel, so that reverse circulation slag discharging can be realized. The invention also provides a working method of the combined type core drilling machine, which solves the engineering problems of low rock breaking efficiency, poor positioning and orientation precision, easy hole collapse and drilling sticking of long-distance drilling and the like, and ensures that long-distance horizontal drilling and coring are safer and more efficient.
Description
Technical Field
The invention relates to the technical field of drilling equipment, in particular to a combined coring drilling machine and a working method thereof.
Background
During the construction process of tunnel engineering, usually before tunnel excavation, the geological formation condition of the region where the tunnel is located needs to be explored first so as to comprehensively and accurately master geological information along the line.
In the prior art, a single coring drilling machine is adopted to obtain a core sample of a stratum, and the geological condition of a tunnel is obtained through analysis of the core sample. However, for long-distance geological conditions, rock conditions of different horizontal distances need to be known, a single core drilling rig cannot meet construction requirements, and for large buried depths and extremely complex geological conditions, construction efficiency is low, difficulty is high, and cost is high.
In view of the foregoing, there is a need for a combined core drill and method of operating the same that solves the problems associated with the prior art.
Disclosure of Invention
The invention aims to provide a combined coring drilling machine, which aims to solve the defects of a single coring drilling machine when coring is performed under long-distance geological working conditions, and the concrete technical scheme is as follows:
the combined type core drilling machine comprises a down-the-hole hammer, a secondary drill rod, a double-wall drill rod, a first rotary propulsion assembly and a second rotary propulsion assembly, wherein two ends of the double-wall drill rod are respectively connected with the down-the-hole hammer and the first rotary propulsion assembly, hollow channels penetrating through the length directions of the double-wall drill rod and the down-the-hole hammer and a first central channel are respectively arranged in the middle of the double-wall drill rod and the down-the-hole hammer, and a medium conveying channel for providing high-pressure medium for the down-the-hole hammer is arranged on the double-wall drill rod;
the secondary drill rod sequentially passes through the first rotary pushing assembly, the hollow channel and the first central channel in a movable manner, and forms a slag discharging channel with the inner wall of the first central channel, the inner wall of the hollow channel and the first rotary pushing assembly in sequence; the front end of the secondary drill rod is provided with a secondary drill bit which is movably arranged in the first central channel, and the rear end of the secondary drill rod is connected with a second rotary propulsion assembly; the middle part of the secondary drill rod is provided with a second central channel penetrating through the length direction of the secondary drill rod, and the secondary drill bit is communicated with the second central channel and the first central channel at the front end of the secondary drill bit; the second central channel is used for placing a coring device or introducing a high-pressure medium;
the hammer head of the down-the-hole hammer is provided with a reverse circulation channel at the periphery of the first central channel, and the reverse circulation channel is communicated with a slag discharging channel at the rear end of the secondary drill bit.
In the above technical solution, preferably, when the secondary drill bit is at the initial position, a gap between the secondary drill bit and an inner wall of the central passage is smaller than a gap between the secondary drill rod and an inner wall of the central passage.
In the above technical scheme, preferably, the first central channel comprises a small inner diameter section and a large inner diameter section positioned at the rear end of the small inner diameter section, the second-stage drill bit is movably arranged in the small inner diameter section, a slag discharging channel is formed between the inner wall of the large inner diameter section and the second-stage drill rod, and the reverse circulation channel is communicated with the large inner diameter section.
In the above technical scheme, preferably, the double-wall drill rod comprises a drill rod outer pipe and a drill rod inner pipe which are coaxially arranged, wherein the drill rod inner pipe is arranged in the drill rod outer pipe, and a medium conveying channel is formed between the drill rod outer pipe and the drill rod inner pipe; the medium conveying channel is communicated with a down-the-hole hammer medium channel on the down-the-hole hammer.
In the above technical solution, preferably, the first rotary propulsion assembly includes a first propulsion device and a first driving device;
the first driving device comprises a box body base, a large gear, a transmission shaft and a first rotation driving assembly, wherein the box body base is connected with the movable end of the first propulsion device, the rotation shaft is rotatably arranged on the box body base, the large gear is fixedly sleeved on the transmission shaft, and the first rotation driving assembly is arranged on the box body base and meshed with the large gear at the rotation end of the first rotation driving assembly;
the front end of the transmission shaft is connected with the double-wall drill rod through a rotary joint, and a medium input channel communicated with the medium conveying channel is arranged on the rotary joint;
and a slag discharging channel is formed among the secondary drill rod, the inner wall of the hollow channel, the inner hole wall of the rotary joint and the inner hole wall of the transmission shaft in sequence.
In the above technical scheme, preferably, the first rotary propulsion assembly further comprises a slag discharging bin body arranged on the box body base, the slag discharging bin body is arranged at the rear end of the transmission shaft, the slag discharging bin body is communicated with the slag discharging channel, and a slag outlet is formed in the slag discharging bin body; the secondary drill rod is movably arranged through the slag discharging bin body.
In the above technical solution, preferably, the first propulsion device includes a propulsion driving member and a rack, the rack is provided with a guide rail, and the propulsion driving member is used for driving the box base to move on the guide rail; the front end of the frame is provided with a pipe changing device for clamping the double-wall drill pipe.
In the above technical scheme, preferably, the second rotary propulsion assembly comprises a second driving device and a second propulsion device, the second-stage drill rod is connected with the rotating end of the second driving device, the second driving device is arranged on the second propulsion device, and a clamp holder for clamping the second-stage drill rod is arranged at the front end of the second propulsion device.
In the above technical solution, preferably, an inclinometer is arranged at the rear end of the coring device; and a winch is arranged at the rear of the second rotary propulsion assembly and is used for pulling the coring device and the inclinometer to withdraw from the central passage II.
The invention also provides a working method of the combined coring drilling machine, which comprises the following steps:
and (3) a quick drilling mode of the down-the-hole hammer:
the first rotary propulsion component drives the down-the-hole hammer to rotate and propel, and the down-the-hole hammer impacts the face under the drive of the high-pressure medium to realize drilling; at the moment, a high-pressure medium is introduced into the secondary drill rod, the secondary drill bit and the down-the-hole hammer are driven by the second rotary propulsion assembly to keep relatively static, and the secondary drill bit is positioned at an initial position; at the moment, a high-pressure medium enters the face from a down-hole hammer medium channel and a center channel II on the down-hole hammer, and then the high-pressure medium carries slag soil and is discharged through a reverse circulation channel and a slag discharge channel;
secondary drilling coring mode:
the down-the-hole hammer stops working, the coring device and the inclinometer are sent to a designated position at the front end of the secondary drill rod, the secondary drill bit is pushed by the second rotary pushing device to be in contact with the face, and in the process, the inclinometer performs one-time track measurement;
the second rotary pushing device drives the secondary drill bit to rotate and push so as to finish coring operation;
the winch pulls the coring device and the inclinometer to withdraw from the second central passage to complete core sample retrieval, and the inclinometer performs one-time track measurement in the process.
The technical scheme of the invention has the following beneficial effects:
the combined core drilling machine provided by the invention combines the down-the-hole hammer with the secondary drill rod and the secondary drill bit, realizes quick drilling through the down-the-hole hammer, realizes coring through the secondary drill rod and the secondary drill bit, realizes alternate execution of quick drilling and coring, and meets the requirement of long-distance sectional coring. When the down-the-hole hammer drills rapidly, the high-pressure medium enters the face through a down-the-hole hammer medium channel on the down-the-hole hammer and a central channel II on the secondary drill rod, and then the high-pressure medium carries slag soil to enter the slag discharging channel through the reverse circulation channel, so that reverse circulation slag discharging can be realized.
The track measurement is carried out through the inclinometer, so that the drilling track of the drilling machine can be obtained, and the function of guiding drilling is achieved; the combined core drilling machine solves the engineering problems of low rock breaking efficiency, poor positioning and orientation precision, easy hole collapse and drill sticking during long-distance drilling and the like, and ensures that long-distance horizontal drilling and coring are safer and more efficient.
In addition to the objects, features and advantages described above, the present invention has other objects, features and advantages. The present invention will be described in further detail with reference to the drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. In the drawings:
FIG. 1 is a schematic view of the overall structure of a combination core drilling rig;
FIG. 2 is a schematic illustration of the structure between the secondary drill pipe and the coring device;
FIG. 3 is a schematic illustration of the structure between the down-the-hole hammer and the double-walled drill pipe;
fig. 4 is a schematic structural view of the first driving device;
fig. 5 is a structural relationship diagram among the second driving device, the second propulsion device, and the hoist;
FIG. 6 is a schematic illustration of the structure between the down-the-hole hammer and the secondary drill pipe;
wherein, 1, a down-the-hole hammer, 2, a secondary drill rod, 3, a pipe changing device, 4, a coring device, 5, an inclinometer, 6, a double-wall drill rod, 7, a frame, 8, a drilling machine chassis, 9, a first propelling device, 10 and a swivel joint, 11, a first driving device 12, a slag discharging bin body 13, a second driving device 14, a second propelling device 15, a steel wire rope 16, a winch 17, a secondary drill bit 18 and a clamp holder;
1-1 parts of a down-the-hole hammer medium channel, 1-2 parts of a center channel I, 1-3 parts of a reverse circulation channel, 1-4 parts of a hammer head, 2-1 parts of a center channel II, 6-1 parts of a drill rod outer tube, 6-2 parts of a drill rod inner tube, 6-3 parts of a medium conveying channel, 10-1 parts of a medium input channel, 11-1 parts of a box body base, 11-2 parts of a speed reducer, 11-3 parts of a hydraulic motor, 11-4 parts of a large gear, 11-5 parts of a transmission shaft, 13-1 parts of a chuck, 13-2 parts of a second rotary driving assembly.
Detailed Description
The present invention will be described more fully hereinafter in order to facilitate an understanding of the present invention, and preferred embodiments of the present invention are set forth. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
Example 1:
referring to fig. 1-6, a combined coring drilling machine comprises a down-the-hole hammer 1, a secondary drill rod 2, a double-wall drill rod 6, a first rotary propulsion assembly and a second rotary propulsion assembly, wherein two ends of the double-wall drill rod 6 are respectively connected with the down-the-hole hammer 1 and the first rotary propulsion assembly, hollow channels penetrating through the length direction of the double-wall drill rod 6 and a central channel 1-2 are respectively arranged in the middle of the down-the-hole hammer 1, and a medium conveying channel 6-3 for providing high-pressure medium for the down-the-hole hammer 1 is arranged on the double-wall drill rod 6;
the secondary drill rod 2 sequentially passes through the first rotary pushing assembly, the hollow channel and the first central channel 1-2 in a movable manner, and the secondary drill rod 2 sequentially forms a slag discharging channel with the inner wall of the first central channel 1-2, the inner wall of the hollow channel and the first rotary pushing assembly; the front end of the secondary drill rod 2 is provided with a secondary drill bit 17, the secondary drill bit 17 is movably arranged in the central channel I1-2, and the rear end of the secondary drill rod 2 is connected with a second rotary propulsion assembly; the middle part of the secondary drill rod 2 is provided with a central channel II 2-1 penetrating through the length direction of the secondary drill rod, and the secondary drill bit 17 is communicated with the central channel II 2-1 and a central channel I1-2 at the front end of the secondary drill bit 17 (namely, the secondary drill bit is of a hollow structure); the second central channel 2-1 is used for placing the coring device 4 or introducing a high-pressure medium; specifically, when the down-the-hole hammer drills, a high-pressure medium is introduced into the second central channel; when the coring operation is performed, the coring device 4 is put into the second central passage, as shown in fig. 2;
referring to fig. 6, the hammer head 1-4 of the down-the-hole hammer 1 is provided with a reverse circulation channel 1-3 on the peripheral side of the central channel 1-2, and the reverse circulation channel 1-3 is communicated with a slag discharging channel at the rear end of the secondary drill bit 17.
When the secondary drill bit 17 is in the initial position, the gap between the secondary drill bit 17 and the inner wall of the first central passage 1-2 is smaller than the gap between the secondary drill rod 2 and the inner wall of the first central passage 1-2. The purpose of this arrangement is to prevent the high pressure medium fed into the central channel 1-2 by the secondary drill rod from flowing into the slag discharge channel, and to prevent the high pressure medium from affecting the slag discharge effect. The initial position is shown in fig. 6 and refers to the position before the secondary drill is not advanced.
In this embodiment, preferably, the first central channel 1-2 includes a small inner diameter section and a large inner diameter section located at the rear end of the small inner diameter section, the second drill bit 17 is movably disposed in the small inner diameter section, a slag discharging channel is formed between the inner wall of the large inner diameter section and the second drill rod 2, and the reverse circulation channel 1-3 is communicated with the large inner diameter section. In this arrangement, the outer diameters of the secondary drill bit and the secondary drill pipe may be set to be uniform or only slightly different, but it should be noted that the inner diameter of the small inner diameter section should be larger than the outer diameter of the secondary drill pipe to ensure smooth advancement of the secondary drill pipe and the secondary drill bit.
In some embodiments, it is possible to design the outer diameter of the secondary drill bit to be larger than the outer diameter of the secondary drill rod, and the first central passage 1-2 may also be provided with an equal inner diameter, in which case it is ensured that the gap between the secondary drill bit and the first central passage is smaller than the gap between the secondary drill rod and the first central passage, and it should be noted that this arrangement also requires that the connection point of the reverse circulation passages 1-3 and the slag discharge passage should be located behind the initial position of the secondary drill bit.
Referring to fig. 3, the double-wall drill pipe 6 includes a drill pipe outer pipe 6-1 and a drill pipe inner pipe 6-2 which are coaxially arranged, wherein the drill pipe outer pipe and the drill pipe inner pipe are hollow pipes, the drill pipe inner pipe 6-2 is arranged in the drill pipe outer pipe 6-1 and forms a medium conveying channel 6-3 therebetween, and the interior of the drill pipe inner pipe 6-2 is a hollow channel; the medium conveying channel 6-3 is communicated with a down-the-hole hammer medium channel 1-1 on the down-the-hole hammer 1, and the down-the-hole hammer 1 is connected with the double-wall drill rod through threads.
When the down-the-hole hammer 1 drills, high-pressure medium enters the face through the down-the-hole hammer medium channel 1-1 and the central channel 2-1, and the high-pressure medium carries slag soil and is discharged through the reverse circulation channel 1-3 and the slag discharge channel. Specifically, referring to the specific structure of the down-the-hole hammer in the prior art, the high-pressure medium is introduced into the down-the-hole hammer through the down-the-hole hammer medium channel on the down-the-hole hammer 1, so as to drive the down-the-hole hammer to impact, and simultaneously, the high-pressure medium is introduced into the face.
In this embodiment, the high pressure medium is high pressure air or high pressure water, and in this embodiment, high pressure air is preferable. As can be appreciated by those skilled in the art, the high pressure air is compressed air, which can be provided by an air compressor or a high pressure air pump, and the specific pressure value can be selected according to the requirements; the high-pressure water can be provided by a high-pressure water pump, and the specific pressure value can be selected according to the requirement.
Referring to fig. 1 and 4, the first rotary propulsion assembly comprises a first propulsion device 9 and a first driving device 11, wherein the first driving device is connected with the double-wall drill rod through a rotary joint; specifically, the first driving device 11 includes a box base 11-1, a large gear 11-4, a transmission shaft 11-5 and a first rotation driving assembly, the box base 11-1 is connected with a movable end of the first propulsion device, the rotation shaft 11-5 is rotatably arranged on the box base 11-1, the large gear 11-4 is fixedly sleeved on the transmission shaft 11-5, the transmission shaft and the large gear are both positioned in the box base, and the first rotation driving assembly is arranged on the box base 11-1 and the rotation end of the first rotation driving assembly is meshed with the large gear 11-4; preferably, the first rotary driving assembly comprises a speed reducer 11-2 and a hydraulic motor 11-3, the speed reducer is connected with the output end of the hydraulic motor, and a pinion is arranged at the output end of the speed reducer and meshed with the large gear.
Further, the front end of the transmission shaft 11-5 is connected with the double-wall drill rod 6 through a rotary joint 10, the double-wall drill rod 6 is connected with the rotary joint 10 through threads, a medium input channel 10-1 communicated with the medium conveying channel 6-3 is arranged on the rotary joint 10, and the medium input channel 10-1 is connected with a high-pressure medium output source, so that high-pressure medium is provided for the down-the-hole hammer.
Specifically, the secondary drill rod penetrates through the rotary joint and the transmission shaft, and a slag discharging channel is formed among the secondary drill rod 2, the inner wall of the hollow channel, the inner hole wall of the rotary joint 10 and the inner hole wall of the transmission shaft 11-5 in sequence.
Further, the first rotary propulsion assembly further comprises a slag discharging bin body 12 arranged on the box body base 11-1, the slag discharging bin body 12 is arranged at the rear end of the transmission shaft 11-5, the slag discharging bin body 12 is communicated with a slag discharging channel, and a slag outlet is formed in the slag discharging bin body 12, namely, slag enters the slag discharging bin body after passing through the slag discharging channel and is discharged; the secondary drill rod 2 movably passes through the slag discharging bin body 12, namely, the secondary drill rod and the slag discharging bin body can relatively rotate, and the secondary drill rod can move along the axial direction of the secondary drill rod relative to the slag discharging bin body, namely, the rotation and the pushing of the secondary drill rod are realized.
Referring to fig. 1, the first propulsion device 9 includes a propulsion driving member and a frame 7, a guide rail is provided on the frame 7, a movable end of the propulsion driving member is connected with the box base, a fixed end of the propulsion driving member is connected with the frame, and the propulsion driving member is used for driving the box base 11-1 to move on the guide rail; the propelling driving piece is preferably an oil cylinder or an air cylinder; the front end of the frame 7 is provided with a pipe changing device 3 for clamping a double-wall drill pipe, and the concrete structure of the pipe changing device is shown in the prior art, such as a clamp holder and the like; the double-wall drill rod is clamped by the pipe changing device, the first rotary driving assembly drives the rotary joint to rotate, screwing or unscrewing of threaded connection between the double-wall drill rod and the rotary joint can be achieved, or screwing or unscrewing of threaded connection between adjacent double-wall drill rods can be achieved, and accordingly double-wall drill rods can be increased and reduced, and long-distance drilling is achieved.
Referring to fig. 5, the second rotary propulsion assembly includes a second driving device 13 and a second propulsion device 14, the second drill rod is connected with a rotating end of the second driving device, and the second driving device 13 is disposed on the second propulsion device 14; specifically, the second driving device comprises a chuck 13-1 and a second rotation driving assembly 13-2, the structural composition of the second rotation driving assembly is the same as that of the first rotation driving assembly, the chuck is connected with the output end of the speed reducer, the second drill rod is clamped and fixed through the chuck, and the second drill rod penetrates through the chuck and the speed reducer, namely, the second drill rod extends out to the outer end of the speed reducer; and high-pressure medium is connected to the end part of the secondary drill rod, or the coring device is put into the central channel II 2-1.
The second propulsion device adopts a combination form of a chain wheel, a chain and a motor, and the specific structural arrangement mode is shown in the prior art; in addition to this, a structure consistent with the first propulsion device may be employed; the front end of the second pushing device 14 is provided with a clamp 18 for clamping the secondary drill rod 2, the adjacent secondary drill rods are connected through threads, and the two secondary drill rods can be increased and reduced through the cooperation of the clamp and the second rotation driving assembly, so that long-distance drilling is realized.
Preferably, the rear end of the coring device 4 is provided with an inclinometer 5, and the coring device is referred to in the prior art.
A winch 16 is arranged behind the second rotary propulsion assembly, and the winch 16 is used for pulling the coring device 4 and the inclinometer 5 to withdraw from the central passage two 2-1. In the practical setting, be equipped with fishing device at the rear end of inclinometer, fishing device connects wire rope 15, realizes pulling out coring device, inclinometer and fishing device together from central passageway two through hoist engine rolling wire rope. Specifically, the coring device and the inclinometer (and the salvaging device) are sent to the front end of the second central passage through high-pressure water or high-pressure gas, and the coring device obtains a core sample at a designated position.
Preferably, the combined coring drilling machine further comprises a drilling machine chassis 8, wherein the drilling machine chassis 8 is a supporting piece of the whole machine; the frame 7, the second propulsion device 14 and the windlass are all arranged on the chassis 8 of the drilling machine.
The embodiment also provides a working method of the combined coring drilling machine, which comprises the following steps:
and (3) a quick drilling mode of the down-the-hole hammer:
the first rotary propulsion component drives the down-the-hole hammer to rotate and propel, and the down-the-hole hammer impacts the face under the drive of the high-pressure medium to realize drilling; at the moment, a high-pressure medium is introduced into the secondary drill rod, the secondary drill bit and the down-the-hole hammer are driven by the second rotary propulsion assembly to keep relatively static, and the secondary drill bit is positioned at an initial position; at the moment, a high-pressure medium enters the face from a down-hole hammer medium channel and a center channel II on the down-hole hammer, and then the high-pressure medium carries slag soil and is discharged through a reverse circulation channel and a slag discharge channel;
secondary drilling coring mode:
the down-the-hole hammer stops working, the coring device and the inclinometer are sent to a designated position at the front end of the secondary drill rod (after the coring device and the inclinometer are placed in a second central passage, high-pressure water or high-pressure air is introduced into the central passage to drive the coring device and the inclinometer to move to the designated position), the secondary drill bit is pushed to be in contact with the face by a second rotary pushing device (namely, the secondary drill bit is pushed out from the first central passage), and in the process, the inclinometer performs primary track measurement;
the second rotary pushing device drives the secondary drill bit to rotate and push so as to finish coring operation;
the winch pulls the coring device and the inclinometer to withdraw from the second central passage to complete core sample retrieval, and the inclinometer performs one-time track measurement in the process.
The method is characterized in that a quick drilling mode and a secondary drilling coring mode of the down-the-hole hammer are alternately circulated, so that long-distance subsection efficient coring of complex geology is realized; the inclinometer is used for measuring the inclination angle and the azimuth angle, then the drilling track is calculated, and the track measurement is carried out through the inclinometer, so that whether the actual drilling direction is consistent with the preset direction can be confirmed.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. The combined type core drilling machine is characterized by comprising a down-the-hole hammer (1), a secondary drill rod (2), a double-wall drill rod (6), a first rotary propulsion assembly and a second rotary propulsion assembly, wherein the two ends of the double-wall drill rod (6) are respectively connected with the down-the-hole hammer (1) and the first rotary propulsion assembly, the middle part of the double-wall drill rod (6) and the middle part of the down-the-hole hammer (1) are respectively provided with a hollow channel and a first central channel (1-2) which penetrate through the length direction of the double-wall drill rod (1), and a medium conveying channel (6-3) for providing high-pressure medium for the down-the-hole hammer (1) is arranged on the double-wall drill rod (6);
the secondary drill rod (2) sequentially passes through the first rotary pushing assembly, the hollow channel and the first central channel (1-2) in a movable mode, and the secondary drill rod (2) sequentially forms a slag discharging channel with the inner wall of the first central channel (1-2), the inner wall of the hollow channel and the first rotary pushing assembly; the front end of the secondary drill rod (2) is provided with a secondary drill bit (17), the secondary drill bit (17) is movably arranged in the first central passage (1-2), and the rear end of the secondary drill rod (2) is connected with a second rotary propulsion assembly; the middle part of the secondary drill rod (2) is provided with a second central channel (2-1) penetrating through the length direction of the secondary drill rod, and the secondary drill bit (17) is communicated with the second central channel (2-1) and the first central channel (1-2) at the front end of the secondary drill bit (17); the second central channel (2-1) is used for placing a coring device (4) or introducing a high-pressure medium;
the hammer head (1-4) of the down-the-hole hammer (1) is provided with a reverse circulation channel (1-3) at the periphery of a first central channel (1-2), and the reverse circulation channel (1-3) is communicated with a slag discharging channel at the rear end of a secondary drill bit (17);
the first rotary propulsion assembly comprises a first propulsion device (9) and a first driving device (11);
the first driving device (11) comprises a box body base (11-1), a large gear (11-4), a transmission shaft (11-5) and a first rotation driving assembly, wherein the box body base (11-1) is connected with the movable end of the first propelling device, the transmission shaft (11-5) is rotatably arranged on the box body base (11-1), the large gear (11-4) is fixedly sleeved on the transmission shaft (11-5), and the first rotation driving assembly is arranged on the box body base (11-1) and meshed between the rotating end of the first rotation driving assembly and the large gear (11-4);
the front end of the transmission shaft (11-5) is connected with the double-wall drill rod (6) through a rotary joint (10), and a medium input channel (10-1) communicated with the medium conveying channel (6-3) is arranged on the rotary joint (10);
and a slag discharging channel is formed among the secondary drill rod (2), the inner wall of the hollow channel, the inner hole wall of the rotary joint (10) and the inner hole wall of the transmission shaft (11-5) in sequence.
2. The combination core drilling rig according to claim 1, characterized in that the clearance between the secondary drill bit (17) and the inner wall of the central passage one (1-2) is smaller than the clearance between the secondary drill rod (2) and the inner wall of the central passage one (1-2) when the secondary drill bit (17) is in the initial position.
3. The combined type core drilling machine according to claim 2, wherein the first central passage (1-2) comprises a small inner diameter section and a large inner diameter section positioned at the rear end of the small inner diameter section, the secondary drill bit (17) is movably arranged in the small inner diameter section, a slag discharging passage is formed between the inner wall of the large inner diameter section and the secondary drill rod (2), and the reverse circulation passage (1-3) is communicated with the large inner diameter section.
4. The combination core drill rig according to claim 1, characterized in that the double-walled drill rod (6) comprises an outer drill rod tube (6-1) and an inner drill rod tube (6-2) arranged coaxially, the inner drill rod tube (6-2) being arranged inside the outer drill rod tube (6-1) with a medium conveying channel (6-3) formed therebetween; the medium conveying channel (6-3) is communicated with a down-the-hole hammer medium channel (1-1) on the down-the-hole hammer (1).
5. The combined core drill according to claim 1, wherein the first rotary propulsion assembly further comprises a slag discharging bin body (12) arranged on the box body base (11-1), the slag discharging bin body (12) is arranged at the rear end of the transmission shaft (11-5), the slag discharging bin body (12) is communicated with a slag discharging channel, and a slag discharging hole is formed in the slag discharging bin body (12); the secondary drill rod (2) is movably arranged through the slag discharging bin body (12).
6. The combined coring drilling machine according to claim 1, wherein the first propulsion device (9) comprises a propulsion drive and a frame (7), the frame (7) being provided with a guide rail, the propulsion drive being used for driving the box base (11-1) to move on the guide rail; the front end of the frame (7) is provided with a pipe changing device (3) for clamping the double-wall drill pipe (6).
7. The combined coring drilling machine according to any one of claims 1-6, wherein the second rotary propulsion assembly comprises a second driving device (13) and a second propulsion device (14), the second drill rod is connected with the rotating end of the second driving device, the second driving device (13) is arranged on the second propulsion device (14), and the front end of the second propulsion device (14) is provided with a clamp holder (18) for clamping the second drill rod (2).
8. The combined coring drilling machine according to any one of claims 1-6, characterized in that the rear end of the coring device (4) is provided with an inclinometer (5); and a winch (16) is arranged at the rear of the second rotary propulsion assembly, and the winch (16) is used for pulling the coring device (4) and the inclinometer (5) to withdraw from the central passage two (2-1).
9. A method of operating a combination core drilling rig as recited in any one of claims 1-8, wherein:
and (3) a quick drilling mode of the down-the-hole hammer:
the first rotary propulsion component drives the down-the-hole hammer to rotate and propel, and the down-the-hole hammer impacts the face under the drive of the high-pressure medium to realize drilling; at the moment, a high-pressure medium is introduced into the secondary drill rod, the secondary drill bit and the down-the-hole hammer are driven by the second rotary propulsion assembly to keep relatively static, and the secondary drill bit is positioned at an initial position; at the moment, a high-pressure medium enters the face from a down-hole hammer medium channel and a center channel II on the down-hole hammer, and then the high-pressure medium carries slag soil and is discharged through a reverse circulation channel and a slag discharge channel;
secondary drilling coring mode:
the down-the-hole hammer stops working, the coring device and the inclinometer are sent to a designated position at the front end of the secondary drill rod, the secondary drill bit is pushed by the second rotary pushing device to be in contact with the face, and in the process, the inclinometer performs one-time track measurement;
the second rotary pushing device drives the secondary drill bit to rotate and push so as to finish coring operation;
the winch pulls the coring device and the inclinometer to withdraw from the second central passage to complete core sample retrieval, and the inclinometer performs one-time track measurement in the process.
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| CN202210968478.8A CN115234186B (en) | 2022-08-12 | 2022-08-12 | Combined coring drilling machine and working method thereof |
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| CN202210968478.8A CN115234186B (en) | 2022-08-12 | 2022-08-12 | Combined coring drilling machine and working method thereof |
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| CN115234186B true CN115234186B (en) | 2024-02-27 |
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| CN115234186A (en) | 2022-10-25 |
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