CN116122747A - Drilling device and drilling method thereof - Google Patents
Drilling device and drilling method thereof Download PDFInfo
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- CN116122747A CN116122747A CN202310108776.4A CN202310108776A CN116122747A CN 116122747 A CN116122747 A CN 116122747A CN 202310108776 A CN202310108776 A CN 202310108776A CN 116122747 A CN116122747 A CN 116122747A
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- 238000005553 drilling Methods 0.000 title claims abstract description 137
- 238000000034 method Methods 0.000 title claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 19
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 6
- 238000009434 installation Methods 0.000 abstract description 5
- 241001074085 Scophthalmus aquosus Species 0.000 abstract 1
- 230000002349 favourable effect Effects 0.000 description 8
- 239000012466 permeate Substances 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000011835 investigation Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000010408 sweeping Methods 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
- 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
- E21B17/1078—Stabilisers or centralisers for casing, tubing or drill pipes
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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
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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
- E21B17/02—Couplings; joints
- E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
- E21B17/042—Threaded
- E21B17/0426—Threaded with a threaded cylindrical portion, e.g. for percussion rods
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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
- E21B17/02—Couplings; joints
- E21B17/08—Casing joints
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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
- E21B7/00—Special methods or apparatus for drilling
- E21B7/20—Driving or forcing casings or pipes into boreholes, e.g. sinking; Simultaneously drilling and casing boreholes
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/10—Geothermal energy
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- 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)
- Earth Drilling (AREA)
Abstract
The utility model relates to a technical field of geological prospecting especially relates to a drilling device and well drilling method thereof, and it includes drill bit and multisection drilling rod, the one end of drill bit is provided with the brill tooth, multisection the drilling rod is sharp array distribution respectively, and one of them section the drilling rod is provided with and is used for with adjacent one section drilling rod fixed connection's fixed establishment, the drill bit set up in one of them section the one end of drilling rod, the drill bit be provided with be used for with one of them section drilling rod fixed connection's installation mechanism, the outside of drilling rod is provided with and is used for vertical direction multisection the drilling rod removes to and the support guiding mechanism of support drilling inner wall. The method has the effect of improving the perpendicularity of the well.
Description
Technical Field
The application relates to the technical field of geological exploration, in particular to a drilling device and a drilling method thereof.
Background
Geological survey pertains to the field of geological engineering, which is a geological survey work performed to ascertain geological factors affecting engineering buildings. After the engineering geological conditions are ascertained, the mode, the characteristics and the scale of the interaction between the engineering building and the geological environment (namely, the engineering geological effect) are predicted according to the structure and the operation characteristics of the designed building, and correct evaluation is made, so that a basis is provided for determining the protection measures for ensuring the stability and the normal use of the building. In the research work of actual geological investigation, the geology to be investigated is usually drilled in advance using a drilling device.
The drilling device is widely applied to geological investigation engineering, the current drilling device generally comprises a drill rod, a drilling tool is arranged at one end of the drill rod, and when drilling is needed, the drill rod drives the drilling tool to rotate, and the drilling tool drills down to geology to be measured.
In the process of realizing the application, the inventor finds that at least the following problems exist in the technology, because the drilling tool is short (such as a three-blade drill bit for sweeping and reaming and a hammer head for a punching pile), and a limiter is not arranged in the middle of the drilling rod, when the drilling depth exceeds 10 meters, the drilling rod can show flexibility, the drilling rod can swing in a hole to a large radian, and the 360-degree direction can deflect, so that the whole drilling well cannot be maintained on a straight line, and the drilling well is S-shaped. Such wells have an impact on subsequent equipment installations, even re-drilling, and also have a bias on the results of the survey.
Disclosure of Invention
In order to improve the verticality of drilling, the application provides a drilling device and a drilling method thereof.
In a first aspect, the present application provides a drilling device, which adopts the following technical scheme:
the drilling device comprises a drill bit and a plurality of sections of drill rods, wherein one end of the drill bit is provided with drill teeth, the plurality of sections of drill rods are distributed in a linear array respectively, one section of drill rods is provided with a fixing mechanism for being fixedly connected with the adjacent section of drill rods, the drill bit is arranged at one end of one section of drill rods, the drill bit is provided with a mounting mechanism for being fixedly connected with one section of drill rods, and the outer side of the drill rod is provided with a support guide mechanism for vertically guiding the plurality of sections of drill rods to move and supporting the inner wall of a drilled hole;
optionally, the support guiding mechanism includes at least two sections or more casings and a fixing piece for fixing two adjacent sections of casings, the at least two sections or more casings are respectively inserted into the drill holes in sequence, and the drill rod is connected with the casings in a sliding manner.
Through adopting above-mentioned technical scheme, when needs well drilling, the staff is fixed in the one end of wherein one section drilling rod through installation mechanism earlier, then insert drilling with one section sleeve pipe in, wherein one section sleeve pipe cover is located the drilling rod this moment, the sleeve pipe is led the drilling rod, and the sleeve pipe is strutted the inner wall of drilling, when one section drilling rod is ready to bore completely in the drilling, the fixed another section drilling rod of rethread fixed establishment, then resume along vertical decurrent direction drilling again, repeat like this, and under support guiding mechanism's effect, multisection drilling rod is along vertical decurrent direction drilling all the time, and the earth of drilling inner wall is difficult to collapse, and then be favorable to improving the straightness of drilling.
Optionally, the fixing piece is an inner screw tube, the inner screw tube is arranged at one end of one section of the sleeve, the inner side of the other end of the sleeve is correspondingly provided with an internal thread, and the inner screw tube is in threaded connection with the other section of the sleeve through the internal thread.
Through adopting above-mentioned technical scheme, when two sections sleeve pipes need to be fixed, the staff is first to the internal thread of another section sleeve pipe of the interior screwed pipe on one section sleeve pipe of one section sleeve pipe, then screws up one section sleeve pipe again, and two sections sleeve pipes are fixed connection each other this moment, and then is favorable to improving the mutual detachability of the interior screwed pipe of more than two sections at least.
Optionally, the installation mechanism includes the connection screw, the connection screw set up in the drill bit deviates from the one end of boring the tooth, the both ends of drilling rod correspond and are provided with the connecting thread, the drilling rod passes through the connecting thread with connection screw threaded connection.
Through adopting above-mentioned technical scheme, when needs are fixed each other with drilling rod and drill bit, the staff is with the connecting screw on the drill bit of drilling rod alignment earlier to screw up the drilling rod simultaneously, the drilling rod is fixed each other with the drill bit this moment, and then is favorable to improving the stability of fixing each other between drilling rod and the drill bit.
Optionally, the installation mechanism includes the connecting cylinder, the connecting cylinder set up in the drill bit deviates from the one end of boring the tooth, the drilling rod with the connecting cylinder is pegged graft, the lateral wall of connecting cylinder runs through and is provided with the swing hole, the connecting cylinder is based on the swing hole articulates and is provided with the hinge piece, one side of hinge piece is provided with the fixed strip, the fixed slot has been seted up to the lateral wall correspondence of drilling rod, the fixed strip with the fixed slot is pegged graft, the connecting cylinder be provided with be used for with the hinge piece is fixed in closure in the swing hole.
Through adopting above-mentioned technical scheme, when needs are fixed each other in the drill bit with the drilling rod, the staff is pegged graft the drilling rod in the connecting cylinder earlier, then swings the articulated piece towards the direction that is close to the swing hole, and the fixed strip is pegged graft in the fixed slot this moment, then is fixed in the swing hole with the articulated piece through the closure piece, and the drilling rod is fixed in the connecting cylinder this moment, and then is favorable to improving the stability of mutual fixation between drilling rod and the drill bit.
Optionally, the closure piece includes catch and spring, the catch slides the cover and locates the outside of connecting cylinder, the one end of connecting cylinder is provided with the backing ring, the catch butt in one side of backing ring, the spring cover is located the connecting cylinder, the one end of spring with the one end of drill bit is connected, the other end of spring with one side of catch is connected.
Through adopting above-mentioned technical scheme, before the drilling rod is pegged graft in the connecting cylinder, the staff drives the catch and removes towards the direction that is close to the drill bit, and the catch compresses tightly the spring this moment, and the staff can drive the articulated piece and swing, after the drilling rod is pegged graft in the connecting cylinder, the staff releases the catch, the spring resumes natural state this moment, the spring resets and drives the catch and remove towards the direction of keeping away from the drill bit, the catch is fixed in the swing downthehole with the articulated piece this moment, and the catch butt is in one side of keeping off the ring, and then is favorable to improving the stability that the articulated piece was fixed in the swing downthehole.
Optionally, the fixed establishment includes the guide block, the guide block slide in the sleeve pipe, the one end of guide block runs through and is provided with the guide screw, two adjacent sections the drilling rod respectively with guide screw threaded connection.
Through adopting above-mentioned technical scheme, when two sections adjacent drilling rods need to be fixed, the staff aligns the guide screw of guide block with two sections drilling rods respectively to screw up simultaneously, two sections of drilling rods pass through guide block fixed connection each other this moment, when the drilling rod inserts in the sleeve pipe, guide block butt in sheathed tube inner wall this moment, guide block and sleeve pipe sliding connection, and guide block drive two sections drilling rods and remove along sheathed tube vertical direction, and then be favorable to improving the detachability of connecting between two sections adjacent drilling rods and improve the stability that the drilling rod removed along vertical direction.
Optionally, one end of the guide block is penetrated with a plurality of water permeable holes.
Through adopting above-mentioned technical scheme, because during drilling, can ooze in the drilling has muddy water, when two sections drilling rods of mutual fixed connection insert in the drilling, muddy water runs through the guide block through the hole that permeates water this moment to reduce pressure, improve the stability that drilling rod and guide block go up and down in the sleeve pipe.
Optionally, two opposite ends of the guide block are respectively provided with an inner inclined plane.
Through adopting above-mentioned technical scheme, under the effect of including inclined plane, be favorable to improving the convenience that the drilling rod aimed at the guide screw, simultaneously under the effect of including inclined plane, be favorable to improving the muddy water infiltration and permeate the downthehole stability of permeating water.
A method of drilling comprising the steps of:
s1: firstly, fixedly connecting one section of drill rod with a drill bit through a mounting mechanism, and then driving the drill bit to drill holes through one section of drill rod;
s2: after the drill bit drills into a certain depth along the vertical downward direction, firstly stopping drilling, then vertically inserting one end of the sleeve into the drilled hole, rotating one section of drill rod in the sleeve at the moment, and then continuously drilling along the vertical downward direction;
s3: stopping drilling when one section of drill rod is ready to be completely inserted into the sleeve, fixedly connecting the other section of drill rod with the other section of drill rod through the fixing mechanism, and continuing drilling;
s4: stopping drilling after the drilling reaches a certain depth, fixedly connecting the two sections of sleeves through the fixing piece, vertically inserting the sleeves at the two ends into the drilling, and continuing drilling;
s5: and repeating S3-S4 so that the drilling depth accords with the exploration depth, and finally pulling out the casing, the drill bit and the multi-section drill rod to finish drilling.
In summary, the present application includes the following beneficial technical effects:
when drilling is needed, a worker firstly fixes the drill bit at one end of one section of drill rod through the mounting mechanism, then drives the drill bit to drill holes along the vertical downward direction through the drill rod, when one section of drill rod is ready to drill into the drilled holes completely, the other section of drill rod is fixed through the fixing mechanism, then drilling holes along the vertical downward direction is continued, and the multiple sections of drill rods are drilled along the vertical downward direction all the time under the action of the supporting and guiding mechanism, and soil on the inner wall of the drilled holes is not easy to collapse, so that the verticality of drilling holes is improved.
Drawings
Fig. 1 is a schematic view of the overall structure of a drilling device according to the first embodiment of the present application.
Fig. 2 is a cross-sectional view of a casing and drill bit according to a first embodiment of the present application.
Fig. 3 is a schematic diagram of connection between a drill rod and a drill bit according to a second embodiment of the present disclosure.
Reference numerals illustrate: 1. a drill bit; 11. drilling teeth; 12. a connecting screw hole; 2. a drill rod; 21. a connecting thread; 22. a fixing groove; 3. a sleeve; 31. an inner coil; 32. an internal thread; 4. a guide block; 41. a guide screw hole; 42. a water permeable hole; 43. an inner inclined surface; 5. a connecting cylinder; 51. a swing hole; 52. a baffle ring; 6. a hinge block; 61. a fixing strip; 7. a locking ring; 8. and (3) a spring.
Detailed Description
The present application is described in further detail below in conjunction with figures 1-3.
Embodiment one:
referring to fig. 1, a drilling apparatus comprises a drill bit 1 and a drill rod 2. The drill bit 1 is vertically arranged, the bottom surface of the drill bit 1 is fixedly provided with drill teeth 11, and the drill bit 1 drills holes in geology to be explored through the drill teeth 11. In the first embodiment, three sections of drill rods 2 are arranged in number, the three sections of drill rods 2 are distributed in a linear array in sequence, and two adjacent sections of drill rods 2 are fixedly connected through a fixing mechanism. One section of drill rod 2 is positioned at the top of the drill bit 1, and the drill bit 1 is provided with a mounting mechanism for being fixedly connected with one section of drill rod 2. The outer side wall of the drill rod 2 is provided with a support guide mechanism for guiding the three sections of drill rods 2 to move along the vertical downward direction and for supporting the inner wall of the drill hole.
Specifically, referring to fig. 2, the mounting mechanism includes a connection screw hole 12, the connection screw hole 12 is formed at the top of the drill bit 1, the connection screw hole 12 is formed along the vertical direction of the drill bit 1, and the hole center of the connection screw hole 12 coincides with the vertical central axis of the drill bit 1. The two ends of the drill rod 2 are respectively provided with a connecting thread 21 correspondingly, and one section of the drill rod 2 is in threaded connection with the connecting screw hole 12 through the connecting thread 21.
When the drill rod 2 and the drill bit 1 are required to be fixed mutually, a worker firstly aligns one section of the drill rod 2 with the connecting screw hole 12 and simultaneously tightens one section of the drill rod 2, and the drill rod 2 and the drill bit 1 are fixedly connected mutually.
Specifically, referring to fig. 2, the support guide mechanism includes a sleeve 3, and in this embodiment, the number of sleeves 3 is two. The two sections of the sleeves 3 are respectively inserted into the drilled hole, the sleeves 3 support the inner wall of the drilled hole to prevent soil collapse of the inner wall of the drilled hole, and the two sections of the sleeves 3 are fixedly connected with each other through a fixing piece. The drill rod 2 is connected with the sleeve 3 in a sliding manner, and the drill rod 2 moves along the vertical direction of the sleeve 3 under the guiding action of the sleeve 3.
When the drill bit 1 is drilled into a borehole, a worker may insert one of the lengths of casing 3 into the borehole, and the drill rod 2 remains drilled in a vertically downward direction under the guidance of the casing 3.
Specifically, referring to fig. 2, the fixture is an inner coil 31. The inner coil 31 is fixed to one end of one of the sleeves 3, and the inner coil 31 is integrally formed with one of the sleeves 3. The end of the other section of sleeve 3 facing one section of sleeve 3 is correspondingly provided with an internal thread 32, wherein one section of sleeve 3 is in threaded connection with the other section of sleeve 3 through the internal thread 31.
When two sections of the sleeve 3 need to be fixed, a worker aligns the inner screw 31 of one section of the sleeve 3 with the inner screw 32 of the other section of the sleeve 3, and then screws one section of the sleeve 3, and at this time, the two sections of the sleeve 3 are fixedly connected.
Specifically, referring to fig. 2, the fixing mechanism includes a guide block 4, the guide block 4 is cylindrical, and the guide block 4 slides in the sleeve 3. The top of the guide block 4 is provided with a guide screw hole 41, the guide screw hole 41 is formed along the vertical direction of the guide block 4, and the hole center of the guide screw hole 41 coincides with the vertical central axis of the guide block 4. Two adjacent sections of drill rods 2 are respectively connected with the guide screw holes 41 through connecting threads 21.
When two adjacent sections of drill rods 2 are required to be fixedly connected, a worker firstly connects the guide block 4 with one section of drill rod 2 in a threaded manner, and then connects the other section of drill rod 2 with the guide block 4 in a threaded manner. Under the guiding action of the guiding blocks 4, the two sections of drill rods 2 move downwards along the vertical direction of the casing 3.
It should be noted that, because mud water is contained in the geology, when drilling and shaping, in mud water can permeate the drilling, see fig. 2, for improving the stability that guide block 4 goes up and down along vertical direction, the top of guide block 4 runs through and is provided with the hole 42 that permeates water, and the hole 42 that permeates water is offered along the vertical direction of guide block 4, and the cross-section of hole 42 that permeates water is the fan shape. The number of the water permeable holes 42 is four, and the four water permeable holes 42 are distributed in an annular array along the vertical central axis of the guide block 4.
When the drill rod 2 drives the guide block 4 to press downwards along the vertical downward direction, the muddy water penetrates through the four water permeable holes 42 respectively, and the reaction force of the water pressure is reduced under the action of the four water permeable holes 42.
It should be noted that, referring to fig. 2, the top and bottom surfaces of the guide block 4 are respectively provided with an inner inclined surface 43, and the inner inclined surface 43 is inclined toward the direction approaching the guide screw hole 41. Under the action of the inner inclined surface 43, the drill rod 2 is better screwed with the guiding screw hole 41.
The application provides a drilling method, which comprises the following steps:
s1: firstly, aligning one section of drill rod 2 with a connecting screw hole 12 of a drill bit 1, screwing one section of drill rod 2, fixedly connecting the one section of drill rod 2 with the drill bit 1 at the moment, and then driving the drill bit 1 to drill holes on the ground through the one section of drill rod 2;
s2: after the drill bit 1 is completely inserted into a drilled hole and the drill bit is drilled to a depth which meets the insertion requirement of the casing pipe 3, firstly stopping drilling, then vertically inserting one section of the casing pipe 3 into the drilled hole, supporting the inner wall of the drilled hole by the casing pipe 3, rotating one section of the casing pipe 3 in one end of the casing pipe, and then continuously drilling along the vertical downward direction;
s3: after one section of drill rod 2 is ready to be completely inserted into one end of the sleeve 3, stopping drilling, firstly connecting the guide block 4 with the top end of one section of drill rod 2 in a threaded manner, then connecting the other section of drill rod 2 with the top of the guide block 4 in a threaded manner, and then continuing drilling, wherein the guide block 4 rotates in the sleeve 3 at this time, and the two sections of drill rods 2 are guided by the guide block 4 to drill in a vertical downward direction;
s4: after the depth of the drilled hole meets the requirement that the sleeve 3 at the other end is inserted, stopping drilling, fixedly connecting the two sections of the sleeve 3 through the inner screw tube 31, simultaneously inserting the two sections of the sleeve 3 into the drilled hole, and then continuing drilling;
s5: and S3-S4 are repeated, when the drilling depth accords with the exploration depth, the drilling is stopped, and finally, the multi-section casing pipe 3, the multi-section drill rod 2 and the drill bit 1 are sequentially taken out, so that the drilling is completed.
Embodiment two: the difference from the first embodiment is that the structure of the mounting mechanism is different.
Specifically, referring to fig. 3, the mounting mechanism includes a connecting barrel 5, the connecting barrel 5 is cylindrical, and the connecting barrel 5 is coaxially fixed to the top of the drill bit 1. The top of the connecting cylinder 5 is arranged in an open way, and the drill rod 2 is spliced with the connecting cylinder 5. The side wall of the connecting tube 5 is provided with a swing hole 51 penetrating therethrough, and the swing hole 51 is opened in the wall thickness direction of the connecting tube 5. The number of the swinging holes 51 is three, and the three swinging holes 51 are distributed in an annular array along the vertical central axis of the connecting cylinder 5. The connecting cylinder 5 is provided with hinge blocks 6 based on three swing holes 51, respectively, and one sides of the three hinge blocks 6 facing the drill rod 2 are respectively fixed with fixing strips 61. The side wall of the drill rod 2 is correspondingly provided with three fixing grooves 22, the three fixing grooves 22 are respectively arranged along the diameter direction of the drill rod 2, and the three fixing strips 61 are respectively spliced with the three fixing grooves 22.
Referring to fig. 3, to facilitate the fixing of the hinge block 6 in the swing hole 51, the connection cylinder 5 is provided with a locking piece including a locking ring 7 and a spring 8. The catch 7 slides and overlaps the lateral wall of locating connecting cylinder 5, and the top outside catch 7 of connecting cylinder 5 is equipped with keeps off the ring 52, and catch 7 butt in the bottom surface that keeps off the ring 52. The spring 8 is sleeved on the outer side wall of the connecting cylinder 5, the top end of the spring 8 is fixedly connected with the bottom surface of the locking ring 7, and the bottom end of the spring 8 is fixedly connected with the top of the drill bit 1.
The working principle of the drilling device is as follows:
when drilling is needed, a worker drives the lock ring 7 to move towards the direction close to the drill bit 1, and at the moment, the lock ring 7 compresses the spring 8, and the spring 8 elastically deforms. The worker then swings the hinge block 6 in a direction away from the swing hole 51 and simultaneously inserts one of the drill rods 2 into the connecting cylinder 5. The worker then swings the hinge block 6 in a direction approaching the swing hole 51, and the fixing bar 61 is inserted into the fixing groove 22. Simultaneously, the worker releases the lock ring 7 by releasing hands, the spring 8 releases the elastic force, the spring 8 resets and drives the lock ring 7 to move towards the direction far away from the drill bit 1, the lock ring 7 is sleeved on the outer side of the hinge block 6, the hinge block 6 is fixed in the swing hole 51, and the drill rod 2 is fixed in the connecting cylinder 5. Then, the worker drives the drill bit 1 to drill the ground through one section of drill rod 2, and then the drilling is completed according to S2-S5 of the drilling method.
In summary, the inner wall of the borehole is supported by the multi-section casing 3, and the multi-section drill rod 2 moves down the borehole vertically along the casing 3 through the guide block 4, so as to keep the vertical shaft, thereby being beneficial to improving the verticality of the borehole.
The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.
Claims (9)
1. A drilling apparatus, characterized in that: the drilling device comprises a drill bit (1) and a plurality of sections of drill rods (2), wherein one end of the drill bit (1) is provided with drilling teeth (11), the plurality of sections of drill rods (2) are distributed in a linear array, one section of drill rods (2) is provided with a fixing mechanism used for being fixedly connected with the adjacent section of drill rods (2), the drill bit (1) is arranged at one end of one section of drill rods (2), the drill bit (1) is provided with an installing mechanism used for being fixedly connected with one section of drill rods (2), and the outer side of the drill rods (2) is provided with a supporting guide mechanism used for vertically guiding the plurality of sections of drill rods (2) to move and supporting the inner wall of a drilled hole;
the support guiding mechanism comprises at least more than two sections of sleeves (3) and fixing pieces used for fixing the sleeves (3) of the adjacent two sections, the sleeves (3) of the at least more than two sections are respectively inserted into the drilled holes in sequence, and the drill rod (2) is connected with the sleeves (3) in a sliding mode.
2. A drilling apparatus according to claim 1, wherein: the fixing piece is an inner screw tube (31), the inner screw tube (31) is arranged at one end of one section of the sleeve (3), an inner thread (32) is correspondingly arranged at the other end of the inner screw tube, and the inner screw tube (31) is in threaded connection with the other section of the sleeve (3) through the inner thread (32).
3. A drilling apparatus according to claim 1, wherein: the mounting mechanism comprises a connecting screw hole (12), the connecting screw hole (12) is formed in one end, deviating from the drilling tooth (11), of the drill bit (1), connecting threads (21) are correspondingly formed in two ends of the drill rod (2), and the drill rod (2) is in threaded connection with the connecting screw hole (12) through the connecting threads (21).
4. A drilling apparatus according to claim 1, wherein: the mounting mechanism comprises a connecting cylinder (5), the connecting cylinder (5) is arranged at one end of the drill bit (1) deviating from the drill tooth (11), the drill rod (2) is inserted into the connecting cylinder (5), a swinging hole (51) is formed in the side wall of the connecting cylinder (5) in a penetrating mode, the connecting cylinder (5) is hinged to the swinging hole (51) and provided with a hinge block (6), one side of the hinge block (6) is provided with a fixing strip (61), a fixing groove (22) is correspondingly formed in the side wall of the drill rod (2), the fixing strip (61) is inserted into the fixing groove (22), and the connecting cylinder (5) is provided with a locking piece used for fixing the hinge block (6) in the swinging hole (51).
5. A drilling apparatus according to claim 4, wherein: the locking piece comprises a locking ring (7) and a spring (8), wherein the locking ring (7) is slidably sleeved on the outer side of the connecting cylinder (5), a baffle ring (52) is arranged at one end of the connecting cylinder (5), the locking ring (7) is abutted to one side of the baffle ring (52), the spring (8) is sleeved on the connecting cylinder (5), one end of the spring (8) is connected with one end of the drill bit (1), and the other end of the spring (8) is connected with one side of the locking ring (7).
6. A drilling apparatus according to claim 1, wherein: the fixing mechanism comprises a guide block (4), the guide block (4) slides in the sleeve (3), one end of the guide block (4) is provided with a guide screw hole (41) in a penetrating mode, and two adjacent sections of drill rods (2) are respectively in threaded connection with the guide screw hole (41).
7. A drilling apparatus according to claim 6, wherein: one end of the guide block (4) is penetrated with a plurality of water permeable holes (42).
8. A drilling apparatus according to claim 6, wherein: the two opposite ends of the guide block (4) are respectively provided with an inner inclined plane (43).
9. A method of drilling, characterized in that a drilling device according to any one of claims 1-8 is used, comprising the steps of:
s1: firstly, fixedly connecting one section of drill rod (2) with a drill bit (1) through a mounting mechanism, and then driving the drill bit (1) to drill through one section of drill rod (2);
s2: after the drill bit (1) drills into a certain depth along the vertical downward direction, firstly stopping drilling, then vertically inserting one end of the casing pipe (3) into the drilling hole, rotating one section of the drill rod (2) in the casing pipe (3) at the moment, and then continuously drilling along the vertical downward direction;
s3: stopping drilling when one section of drill rod (2) is ready to be completely inserted into the sleeve (3), and then fixedly connecting the other section of drill rod (2) with the other section of drill rod (2) through a fixing mechanism, and continuing drilling;
s4: stopping drilling after the drilling reaches a certain depth, fixedly connecting the two sections of sleeves (3) through the fixing piece, vertically inserting the two sections of sleeves (3) into the drilling, and continuously drilling;
s5: and repeating the steps S3-S4 so that the drilling depth accords with the exploration depth, and finally pulling out the casing (3), the drill bit (1) and the multi-section drill rod (2) to finish drilling.
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|---|---|
| CN116122747B (en) | 2023-09-05 |
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