CN116677323A - Core sampling drill bit for environmental monitoring geotechnical engineering and use method thereof - Google Patents
Core sampling drill bit for environmental monitoring geotechnical engineering and use method thereof Download PDFInfo
- Publication number
- CN116677323A CN116677323A CN202310578884.8A CN202310578884A CN116677323A CN 116677323 A CN116677323 A CN 116677323A CN 202310578884 A CN202310578884 A CN 202310578884A CN 116677323 A CN116677323 A CN 116677323A
- Authority
- CN
- China
- Prior art keywords
- steel
- drill bit
- extrusion
- steel pipe
- pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000012544 monitoring process Methods 0.000 title claims abstract description 26
- 230000007613 environmental effect Effects 0.000 title claims abstract description 24
- 238000005070 sampling Methods 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000001125 extrusion Methods 0.000 claims abstract description 70
- 239000011435 rock Substances 0.000 claims abstract description 27
- 238000005553 drilling Methods 0.000 claims abstract description 23
- 229910000831 Steel Inorganic materials 0.000 claims description 177
- 239000010959 steel Substances 0.000 claims description 177
- 238000003825 pressing Methods 0.000 claims description 32
- 230000008569 process Effects 0.000 claims description 9
- 230000000670 limiting effect Effects 0.000 claims description 6
- 238000005056 compaction Methods 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 230000000694 effects Effects 0.000 claims description 4
- 230000009471 action Effects 0.000 claims description 3
- 230000006835 compression Effects 0.000 description 6
- 238000007906 compression Methods 0.000 description 6
- 239000000243 solution Substances 0.000 description 6
- 238000005452 bending Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- E21B10/02—Core bits
-
- 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
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Landscapes
- 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
The application discloses a core sampling drill bit for environmental monitoring geotechnical engineering and a use method thereof. The application realizes stable drilling of the rock core and complete taking out of the rock core through radial adjustment of the extrusion part.
Description
Technical Field
The application relates to the technical field of environmental monitoring, in particular to a core sampling drill bit for environmental monitoring geotechnical engineering and a use method thereof.
Background
Environmental monitoring and geotechnical engineering construction are two important working areas of modern society. The environmental monitoring needs to collect the physical data of each environmental element for detection and analysis so as to comprehensively understand the environmental quality and the change trend thereof. Vibration, section deformation, seepage change and the like generated in the geotechnical engineering construction process can have certain influence on the surrounding environment, and monitoring and early warning are needed. The core sampling can directly obtain the physical samples of deep rock and soil mass and underground water, and is one of the important technical means of environmental monitoring and geotechnical engineering monitoring management. The conventional core sampling drill bit has a simple structure and poor sampling quality, and cannot well meet the requirement of environmental monitoring on high-quality cores. The existing core sampling drill bit is mainly used for rock mineral exploration, and fewer special drill bits are used for monitoring the geotechnical engineering construction environment.
The document with the prior art publication number of CN105386726B provides a novel stratum core sampling drill bit for preventing the breakage of the core, and the device can effectively prevent the breakage of the core, even if the core falls off and is blocked in the drill bit, the core can still be easily taken out, and the subsequent work is not influenced; in addition, the scraper controller of the drill bit can control the opening and closing of the scraper, so that the scraper and the inner wall of the drill rod are guaranteed to form a certain angle in an oblique way, and the probability of core fracture in the drill bit is reduced. However, after the core is drilled, the scraper can be accommodated in the inner wall of the drill rod, so that if the strength of the scraper is insufficient, the risk that the scraper is clamped between the core and the drill rod exists, the core cannot be taken out of the drill rod, and high requirements on the strength and accommodation of the scraper are met in order to avoid the situation; after the core is drilled, the scraper is required to be clung to the inner wall of the drill rod in a non-angle manner so as to ensure that the core can be taken out smoothly, and if a certain scraper is in a collapse or bending state, the core cannot be taken out from the drill rod due to the non-angle clung state. Meanwhile, the high temperature generated in the drilling process can cause the rock core to expand and squeeze the inside of the pipe body, so that the difficulty in taking out the rock core from the pipe body is further increased.
In summary, how to avoid the problem of high-temperature expansion between the pipe body and the core, and improve the sampling efficiency and accuracy without affecting the quality of the core, has become a problem to be solved.
Disclosure of Invention
In order to overcome a series of defects that prior art exists, the aim of this patent is to above-mentioned problem, provides a core sampling drill bit for environmental monitoring geotechnical engineering, includes:
a drill part 1;
the steel body pipe part 2, one end of the steel body pipe part 2 is fixedly connected with the drill bit part 1;
the extrusion part 3 is movably arranged in the steel body pipe part 2, and a pre-pressing cavity is formed between the extrusion part 3 and the steel body pipe part 2;
an inner diameter adjusting part 4, wherein the inner diameter adjusting part 4 is arranged in a pre-pressing cavity between the extrusion part 3 and the steel body pipe part 2, and the inner diameter adjusting part 4 and the pre-pressing cavity are detachably arranged;
the fixed part 5, be detachable connection between fixed part 5 and the steel body pipe portion 2, internal diameter adjustment part 4 passes through fixed part 5 setting in the pre-compaction intracavity.
In the technical scheme, the drill bit part 1 is fixed at the lower end of the steel body pipe part 2 in a conventional welding mode, the extrusion part 3 is movably arranged in the steel body pipe part 2, and the extrusion part 3 can be adjusted along the radial direction of the steel body pipe part 2, so that the position of the extrusion part 3 can be adjusted; when the outer wall of the extrusion part 3 is attached to the inner wall of the steel body pipe part 2, the core can be easily and completely poured out of the steel body pipe part 2; the inner diameter adjusting part 4 is arranged in the pre-pressing cavity between the extruding part 3 and the steel body pipe part 2, when the inner diameter adjusting part 4 is inserted into the pre-pressing cavity, the inner diameter of the extruding part 3 is in a minimum state, and when the inner diameter adjusting part 4 is extracted from the pre-pressing cavity, the extruding part 3 can be close to the steel body pipe part 2, and the inner diameter of the extruding part 3 can be enlarged; the fixed part 5 is detachably connected with the upper end of the steel body pipe part 2, the fixed part 5 can be used for being connected with a connecting pipe, and meanwhile, the inner diameter adjusting part 4 can be fixed in the pre-pressing cavity to prevent the inner diameter adjusting part 4 from falling off.
Optionally, the steel body pipe portion 2 includes a steel pipe 201, a plurality of guiding holes 202 are formed in a penetrating manner on a side surface of the steel pipe 201, the guiding holes 202 are formed along a radial direction of the steel pipe 201, the extruding portion 3 can move along an axial direction of the guiding holes 202, an external thread section 204 is integrally formed at one end, far away from the drill portion 1, of the steel pipe 201, and the external thread section 204 is in threaded connection with the fixing portion 5.
In the above technical solution, through the cooperation of the guide hole 202 and the extrusion part 3, the extrusion part 3 can be prevented from rotating, so as to ensure that it can rotate along with the steel pipe 201. The upper end of the steel pipe 201 is integrally formed with the external thread section 204, and is screwed with the fixing portion 5 through the external thread section 204, thereby realizing the detachable connection between the fixing portion 5 and the external thread section 204. This design ensures the stability of the extrusion 3 during the core drilling process, while also facilitating the installation and removal of the device. Optionally, the extruding part 3 includes a plurality of steel plates 301 and a plurality of guide rods 302, the steel plates 301 are arranged in an arc structure, a plurality of steel plates 301 are annularly distributed in the steel pipe 201, and a plurality of guide rods 302 are fixedly mounted on the outer wall of the side surface of the steel plate 301 and are adapted to the guide holes 202 in a one-to-one correspondence manner.
Optionally, a through hole 303 penetrating the steel plate 301 is formed in the axial direction of the guide rod 302.
In the above technical solution, in order to ensure that the extrusion part 3 can rotate along with the steel pipe 201, the extrusion part 3 is composed of four steel plates 301 with the same size and structure, and the four steel plates 301 are in an arc-shaped plate structure, and are distributed in a ring shape to form a circular pipe structure coaxial with the steel pipe 201; a plurality of guide rods 302 are fixedly arranged on the side outer wall of each steel plate 301, and the guide rods 302 and the corresponding guide holes 202 are matched to slide so as to ensure the normal sliding of the steel plates 301; meanwhile, in order to ensure that the guide rod 302 can axially penetrate through the steel plate 301, so that the steel plate 301 can rotate along with the steel pipe 201, when the steel pipe 201 is cooled by adding aqueous solution on the external thread section 204 at the upper end of the steel pipe 201, liquid can overflow through the through hole 303 axially formed in the guide rod 302, the surface of the steel pipe 201 is cooled, and the service life of the steel pipe is prolonged; the plurality of through holes 303 can also reduce the probability of blockage and ensure good water-through cooling effect.
Optionally, the inner diameter adjusting portion 4 includes a plurality of arc plates 401, the arc plates 401 are disposed in the pre-pressing cavity between the steel plate 301 and the steel pipe 201, the inner diameter of the arc plates 401 is adapted to the outer diameter of the steel plate 301, and a traction hole 402 is formed at one end of the arc plates 401, which is close to the fixing portion 5.
In the above technical solution, the inner diameter adjusting portion 4 is composed of four arc plates 401 with the same size, and the arc plates 401 can be inserted into the pre-pressing cavity from the upper end of the steel pipe 201, and the inner diameter of the arc plates 401 is adapted to the outer diameter of the steel plate 301, so as to ensure the fit between the arc plates 401 and the steel plate 301; when the arc 401 is inserted into the pre-pressing cavity, the inner diameter of the extrusion part 3 formed by the steel plates 301 at the moment is the outer diameter of the rock core, the arc 401 can be taken out from the pre-pressing cavity by hanging the traction hole 402 through traction equipment, the extrusion acting force of the steel plates 301 on the rock core after the arc 401 is pulled out is reduced, the friction coefficient with the rock core is further reduced, and finally the rock core can be poured out from the upper end of the steel pipe 201.
Optionally, the fixing part 5 comprises an internally threaded sleeve 501 and a pressing ring 502;
the inner diameter of the internally threaded sleeve 501 is larger than the inner diameter of the extrusion ring 502, and the extrusion ring 502 comprises an internally threaded hole 5022;
the internally threaded sleeve 501 is in threaded connection with the externally threaded section 204, and the upper end of the arcuate plate 401 abuts against the lower surface of the compression ring 502.
In the above technical solution, the detachable connection between the fixing portion 5 and the steel body pipe portion 2 can be realized by the threaded connection between the internal threaded sleeve 501 and the external threaded section 204; the upper end of the arc plate 401 is propped against the lower surface of the extrusion ring 502, so that the axial movement of the arc plate 401 can be avoided; simultaneously, set up internal thread hole 5022 in the inboard of extrusion ring 502 in order to be convenient for with the threaded connection of connecting pipe, make things convenient for simultaneously with drilling equipment's fixed connection.
Optionally, a limiting ring 203 is fixedly installed at one end of the steel pipe 201, which is close to the external thread section 204;
a plurality of internal thread counter bores 503 are annularly distributed on the side outer wall of the internal thread sleeve 501.
In the above technical solution, when the internal thread bushing 501 and the external thread section 204 are in threaded connection, bending caused by the extrusion arc plate 401 in transition of the internal thread bushing 501 can be avoided by the limiting ring 203; meanwhile, the fixing strength between the internally threaded sleeve 501 and the steel pipe 201 can be improved by the threaded connection of the countersunk head screw and the internally threaded counter bore 503.
Optionally, a groove 5021 is formed on the lower surface of the pressing ring 502, and the groove 5021 is in an annular structure and is matched with the arc plate 401.
In the above technical scheme, after the arc 401 is clamped into the groove 5021, the limiting effect of the extrusion ring 502 on the arc 401 can be improved, and radial shaking of the arc 401 is avoided.
Optionally, the inner diameter of the drill bit part 1 is not greater than the inner diameter of the steel plates 301 distributed in an annular shape, the inner side of one end of the steel plates 301 close to the drill bit part 1 is provided with a slope structure, and the inner diameter size of the slope structure is sequentially reduced from bottom to top;
the inner diameter dimension of the bit portion 1 is larger than the outer diameter dimension of the internally threaded sleeve 501.
In the above technical solution, when the drill bit 1 drills a core, a broken surface formed at the lower end of the drill bit 1 can guide the core to move between the steel plates 301 and squeeze between the four steel plates 301; during the process of drilling the core, the inner diameter of the drill hole is larger than the outer diameter of the internally threaded sleeve 501, so that connection loosening caused by friction between the internally threaded sleeve 501 and the rock hole can be avoided.
The application also aims to provide a use method of the core sampling drill bit for the environmental monitoring geotechnical engineering, which at least comprises the following method steps:
fixing the drill part 1 at one end of the steel body pipe part 2 far away from the external thread section 204, sequentially inserting a plurality of steel plates 301 into the pre-pressing cavity from the upper end opening of the steel pipe 201, and fixing the fixing part 5 and the steel pipe 201 to finish the fixing of the extrusion part 3;
fixedly connecting the fixed part 5 with an output shaft of drilling machine equipment, and driving the drill part 1 to rotate through the drilling machine equipment so as to drill and core the rock stratum;
after drilling is completed, the drill equipment is lifted upwards, and at the moment, the rock core is fixed in the extrusion part 3 under the action of thermal expansion extrusion due to high-temperature expansion generated in the drilling process;
the fixing portion 5 is removed from the steel pipe 201, and then the arc-shaped plates 401 are withdrawn one by one from the pre-pressing chamber, at which time the gap between the steel plate 301 and the steel pipe 201 is loosened, and can be brought close to the inner wall of the steel pipe 201,
finally, the extrusion force of the steel plate 301 and the core becomes smaller, the friction coefficient is greatly reduced, and the core can completely slide out from one end of the external thread section 204 of the steel pipe 201.
Compared with the prior art, the application has at least the following technical effects or advantages:
according to the application, stable drilling of the rock core and complete taking out of the rock core are realized through radial adjustment of the extrusion part.
Drawings
FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present application;
FIG. 2 is a schematic diagram of an overall explosion structure according to an embodiment of the present application;
FIG. 3 is a schematic overall cross-sectional structure of an embodiment of the present application;
FIG. 4 is an enlarged schematic view of the structure of FIG. 3A;
FIG. 5 is an enlarged schematic view of the structure of FIG. 3B;
FIG. 6 is a schematic cross-sectional view of a fixing portion according to an embodiment of the present application;
FIG. 7 is a schematic view of an arc plate according to an embodiment of the present application;
FIG. 8 is a schematic view of a steel pipe section according to an embodiment of the present application;
fig. 9 is a schematic structural view of an inner diameter adjusting portion in an embodiment of the present application.
The reference numerals in the drawings are:
1-a drill part, 2-a steel body pipe part, 3-an extrusion part, 4-an inner diameter adjusting part and 5-a fixing part;
201-steel pipes, 202-guide holes, 203-limiting rings and 204-external thread sections;
301-steel plates, 302-guide rods and 303-through holes;
401-arc-shaped plate, 402-traction hole;
501-an internally threaded sleeve, 502-a compression ring, 503-an internally threaded counter bore;
5021-grooves, 5022-internal threaded holes.
Detailed Description
The present application will be described in further detail below with reference to the accompanying drawings.
Referring to fig. 1 and 2 and fig. 3, a core sampling drill bit for environmental monitoring geotechnical engineering, comprising: the steel body pipe comprises a drill bit part 1, a steel body pipe part 2, an extrusion part 3, an inner diameter adjusting part 4 and a fixing part 5, wherein one end of the steel body pipe part 2 is fixedly connected with the drill bit part 1, the extrusion part 3 is movably arranged in the steel body pipe part 2, the inner diameter of the extrusion part 3 is adjustable, a pre-compression cavity is formed between the extrusion part 3 and the steel body pipe part 2, the inner diameter adjusting part 4 is arranged in the pre-compression cavity between the extrusion part 3 and the steel body pipe part 2, the inner diameter adjusting part 4 is detachable from the pre-compression cavity, the fixing part 5 is detachably connected with the steel body pipe part 2, and the inner diameter adjusting part 4 is arranged in the pre-compression cavity through the fixing part 5.
In the embodiment, the drill part 1 is fixed at the lower end of the steel body pipe part 2 in a conventional welding mode, the extrusion part 3 is movably arranged in the steel body pipe part 2, and the extrusion part 3 can be adjusted along the radial direction of the steel body pipe part 2, so that the position of the extrusion part 3 can be adjusted; when the outer wall of the extrusion part 3 is attached to the inner wall of the steel body pipe part 2, the core can be easily and completely poured out of the steel body pipe part 2; the inner diameter adjusting part 4 is arranged in the pre-pressing cavity between the extruding part 3 and the steel body pipe part 2, when the inner diameter adjusting part 4 is inserted into the pre-pressing cavity, the inner diameter of the extruding part 3 is in a minimum state, and when the inner diameter adjusting part 4 is extracted from the pre-pressing cavity, the extruding part 3 can be close to the steel body pipe part 2, and the inner diameter of the extruding part 3 can be enlarged; the fixed part 5 is detachably connected with the upper end of the steel body pipe part 2, the fixed part 5 can be used for being connected with a connecting pipe, and meanwhile, the inner diameter adjusting part 4 can be fixed in the pre-pressing cavity to prevent the inner diameter adjusting part 4 from falling off.
Referring to fig. 8, the steel body pipe portion 2 includes a steel pipe 201, a plurality of guide holes 202 are formed in the surface of the steel pipe 201, the guide holes 202 are formed along the radial direction of the steel pipe 201, the extrusion portion 3 is adjustable along the axial direction of the guide holes 202, an external thread section 204 is integrally formed at one end of the steel pipe 201 away from the drill bit portion 1, and the external thread section 204 is in threaded connection with the fixing portion 5.
In this embodiment, the surface of the steel pipe 201 is provided with a plurality of guide holes 202, the guide holes 202 are radially formed along the steel pipe 201, the outer side of the extrusion part 3 is inserted into the guide holes 202 and can be adjusted along the axial direction of the guide holes 202, so that the extrusion part 3 is prevented from rotating during the process of drilling a core, the extrusion part 3 is ensured to rotate along with the steel pipe 201, the external thread section 204 is integrally formed at the upper end of the steel pipe 201, and the external thread section 204 is in threaded connection with the fixing part 5 through the external thread section 204, so that the detachable connection of the fixing part 5 and the external thread section 204 is realized.
Referring to fig. 4, 5 and 9, the extruding portion 3 includes a plurality of steel plates 301 and a plurality of guide rods 302, the steel plates 301 are arranged in an arc structure, the plurality of steel plates 301 are annularly distributed in the steel tube 201, the guide rods 302 are fixedly mounted on the outer side walls of the side surfaces of the steel plates 301 and are adapted to the guide holes 202 in a one-to-one correspondence manner, and through holes 303 penetrating through the steel plates 301 are formed in the axial direction of the guide rods 302.
In this embodiment, in order to ensure that the extrusion part 3 can rotate along with the steel pipe 201, the extrusion part 3 is composed of four steel plates 301 with the same size and structure, and the four steel plates 301 are in an arc plate structure, and are distributed in a ring shape to form a circular pipe structure coaxial with the steel pipe 201; a plurality of guide rods 302 are fixedly arranged on the side outer wall of each steel plate 301, and the guide rods 302 and the corresponding guide holes 202 are matched to slide so as to ensure the normal sliding of the steel plates 301; meanwhile, in order to ensure that the guide rod 302 can axially penetrate through the steel plate 301, so that the steel plate 301 can rotate along with the steel pipe 201, when the steel pipe 201 is cooled by adding aqueous solution on the external thread section 204 at the upper end of the steel pipe 201, liquid can overflow through the through hole 303 axially formed in the guide rod 302, the surface of the steel pipe 201 is cooled, and the service life of the steel pipe is prolonged; the plurality of through holes 303 can also reduce the probability of blockage and ensure good water-through cooling effect.
Referring to fig. 4, 5 and 7, the inner diameter adjusting portion 4 includes a plurality of arcuate plates 401, the arcuate plates 401 are disposed in the pre-pressing cavity between the steel plate 301 and the steel tube 201, the inner diameter of the arcuate plates 401 is adapted to the outer diameter of the steel plate 301, and a traction hole 402 is formed at one end of the arcuate plates 401 close to the fixing portion 5.
In this embodiment, the inner diameter adjusting portion 4 is composed of four arc plates 401 with the same size, and the arc plates 401 can be inserted into the pre-pressing cavity from the upper end of the steel pipe 201, the inner diameter of the arc plates 401 is matched with the outer diameter of the steel plate 301 to ensure the fit between the arc plates 401 and the steel plate 301, when the arc plates 401 are inserted into the pre-pressing cavity, the inner diameter of the extrusion portion 3 composed of the steel plate 301 at this time is the outer diameter of the core, and the arc plates 401 can be taken out from the pre-pressing cavity by hanging the traction holes 402 through the traction equipment, the extrusion acting force of the steel plate 301 on the core after the arc plates 401 are pulled out is reduced, so that the friction coefficient with the core is reduced, and finally the core can be poured out from the upper end of the steel pipe 201.
Referring to fig. 4 and 5 and fig. 6, the fixing portion 5 includes an internally threaded sleeve 501 and a pressing ring 502, the internal diameter of the internally threaded sleeve 501 is larger than the internal diameter of the pressing ring 502, the pressing ring 502 includes an internally threaded hole 5022, the internally threaded sleeve 501 is in threaded connection with the externally threaded section 204, and the upper end of the arc plate 401 abuts against the lower surface of the pressing ring 502.
In the embodiment, the detachable connection of the fixing part 5 and the steel body pipe part 2 can be realized through the threaded connection of the internal threaded sleeve 501 and the external threaded section 204; the upper end of the arc plate 401 is propped against the lower surface of the extrusion ring 502, so that the axial movement of the arc plate 401 can be avoided; simultaneously, set up internal thread hole 5022 in the inboard of extrusion ring 502 in order to be convenient for with the threaded connection of connecting pipe, make things convenient for simultaneously with drilling equipment's fixed connection.
Referring to fig. 3 and 7, a stop collar 203 is fixedly mounted at one end of the steel pipe 201 near the external thread section 204, and a plurality of internal thread counter bores 503 are annularly distributed on the lateral outer wall of the internal thread sleeve 501.
In this embodiment, when the internal threaded sleeve 501 and the external threaded section 204 are in threaded connection, bending caused by the extrusion arc plate 401 in transition of the internal threaded sleeve 501 can be avoided by the limiting ring 203; meanwhile, the fixing strength between the internally threaded sleeve 501 and the steel pipe 201 can be improved by the threaded connection of the countersunk head screw and the internally threaded counter bore 503.
Referring to fig. 4 and 7, a groove 5021 is formed on the lower surface of the extrusion ring 502, and the groove 5021 is arranged in an annular structure and is matched with the arc plate 401.
In this embodiment, after the arc plate 401 is clamped into the groove 5021, the limiting effect of the extrusion ring 502 on the arc plate 401 can be improved, and radial shake of the arc plate 401 is avoided.
Referring to fig. 5, the bit portion 1 is smaller than or equal to the inner diameter of the steel plate 301 distributed in a ring shape, and the inner side of one end of the steel plate 301 near the bit portion 1 is of a slope structure, and the bit portion 1 is larger than the outer diameter of the internally threaded sleeve 501.
In this embodiment, when the drill bit 1 drills a core, a broken surface formed at the lower end of the drill bit 1 can guide the core to move between the steel plates 301 and press between the four steel plates 301; during the process of drilling the core, the inner diameter of the drill hole is larger than the outer diameter of the internally threaded sleeve 501, so that connection loosening caused by friction between the internally threaded sleeve 501 and the rock hole can be avoided.
The use method of the core sampling drill bit for the environmental monitoring geotechnical engineering at least comprises the following method steps:
s1, fixing a drill part 1 at one end of a steel body pipe part 2 far away from an external thread section 204, and installing an extrusion part 3 inside the steel body pipe part 2, so that the installation of the extrusion part 3 can be completed;
s2, sequentially inserting a plurality of steel plates 301 into the pre-pressing cavity from the upper end opening of the steel pipe 201, and fixing the fixing part 5 and the steel pipe 201 to finish the fixing of the extrusion part 3;
s3, fixedly connecting the fixing part 5 with an output shaft of drilling machine equipment, and driving the fixing part 5, the steel body pipe part 2 and the drill bit part 1 to rotate through the drilling machine equipment so as to drill and core rock formations;
s4, lifting upwards through drilling machine equipment after drilling is completed, wherein the rock core is fixed in the extrusion part 3 under the action of thermal expansion extrusion due to high-temperature expansion generated in the drilling process;
s5, removing the fixing part 5 from the steel pipe 201, and then extracting the steel plates 301 from the pre-pressing cavity one by one, wherein the steel plates 301 and the steel pipe 201 are loosened and can approach the inner wall of the steel pipe 201, so that the inner diameter of the extrusion part 3 is adjusted to be larger;
s6, the extrusion acting force of the final steel plate 301 and the rock core is reduced, the friction coefficient is greatly reduced, and the rock core can completely slide out from one end of the external thread section 204 of the steel pipe 201.
Claims (10)
1. The utility model provides an environment monitoring rock core sampling drill bit for geotechnical engineering, includes drill bit portion, steel body pipe portion, extrusion portion, internal diameter adjustment portion and fixed part, its characterized in that, the one end and the drill bit portion fixed connection of steel body pipe portion, extrusion portion activity sets up the inside at steel body pipe portion, be formed with the pre-compaction chamber between extrusion portion and the steel body pipe portion, internal diameter adjustment portion sets up in the pre-compaction chamber between extrusion portion and the steel body pipe portion, internal diameter adjustment portion is the detachable setting with the pre-compaction chamber, be detachable connection between fixed part and the steel body pipe portion, internal diameter adjustment portion sets up in the pre-compaction intracavity through the fixed part.
2. The rock core sampling drill bit for environmental monitoring geotechnical engineering according to claim 1, wherein the steel body pipe part comprises a steel pipe, a plurality of guide holes are formed in the side face of the steel pipe in a penetrating mode, the guide holes are formed in the radial direction of the steel pipe, the extrusion part can move along the axis direction of the guide holes, an external thread section is integrally formed at one end, away from the drill bit part, of the steel pipe, and the external thread section is in threaded connection with the fixing part.
3. The core sampling drill bit for environmental monitoring geotechnical engineering according to claim 2, wherein the extruding part comprises a plurality of steel plates and a plurality of guide rods, the steel plates are arranged in an arc-shaped structure, the steel plates are annularly distributed in the steel pipe, and the guide rods are fixedly arranged on the outer walls of the side surfaces of the steel plates in a one-to-one correspondence mode.
4. A core sampling drill bit for environmental monitoring geotechnical engineering according to claim 3, wherein the axial direction of the guide rod is provided with a through hole penetrating through the steel plate.
5. The rock core sampling drill bit for environmental monitoring geotechnical engineering according to claim 3, wherein the inner diameter adjusting part comprises a plurality of arc plates, the arc plates are arranged in a pre-pressing cavity between the steel plate and the steel pipe, the inner diameters of the arc plates are matched with the outer diameters of the steel plate, and a traction hole is formed in one end, close to the fixing part, of each arc plate.
6. The core sampling drill bit for environmental monitoring geotechnical engineering according to claim 5, wherein the fixing portion comprises an inner threaded sleeve and an extrusion ring, the inner diameter of the inner threaded sleeve is larger than that of the extrusion ring, the extrusion ring comprises an inner threaded hole, the inner threaded sleeve is in threaded connection with the outer threaded section, and the upper end of the arc-shaped plate abuts against the lower surface of the extrusion ring.
7. The core sampling drill bit for environmental monitoring geotechnical engineering according to claim 6, wherein a limiting ring is fixedly arranged at one end of the steel pipe close to the external thread section, and a plurality of internal thread counter bores are annularly distributed on the outer wall of the side face of the internal thread sleeve.
8. The core sampling drill bit for environmental monitoring geotechnical engineering according to claim 6, wherein the lower surface of the extrusion ring is provided with a groove, and the groove is arranged in an annular structure and matched with the arc plate.
9. The core sampling drill bit for environmental monitoring geotechnical engineering according to claim 8, wherein the inner diameter of the drill bit part is not larger than the inner diameter of the steel plates distributed in a ring shape, the inner side of one end of the steel plates close to the drill bit part is in a slope structure, the inner diameter size of the slope structure is sequentially reduced from bottom to top, and the inner diameter size of the drill bit part is larger than the outer diameter size of the internally threaded sleeve.
10. The application method of the core sampling drill bit for the environmental monitoring geotechnical engineering is characterized by comprising the following steps of:
fixing the drill bit part at one end of the steel body pipe part far away from the external thread section, sequentially inserting a plurality of steel plates into the pre-pressing cavity from the upper end opening of the steel pipe, and fixing the fixing part and the steel pipe to finish the fixing of the extrusion part;
fixedly connecting the fixed part with an output shaft of drilling machine equipment, and driving the drill bit part to rotate through the drilling machine equipment so as to drill and core the rock stratum;
after drilling is completed, the drill is lifted upwards by the drilling machine equipment, and at the moment, the rock core is fixed in the extrusion part under the action of thermal expansion extrusion due to high-temperature expansion generated in the drilling process;
the fixing part is taken down from the steel pipe, then the arc plates are pulled out from the pre-pressing cavity one by one, at the moment, the steel plate and the steel pipe are loosened, the steel plate and the steel pipe can approach the inner wall of the steel pipe, finally, the extrusion acting force of the steel plate and the rock core is reduced, the friction coefficient is greatly reduced, and the rock core can completely slide out from one end of the external thread section of the steel pipe at the moment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310578884.8A CN116677323A (en) | 2023-05-22 | 2023-05-22 | Core sampling drill bit for environmental monitoring geotechnical engineering and use method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310578884.8A CN116677323A (en) | 2023-05-22 | 2023-05-22 | Core sampling drill bit for environmental monitoring geotechnical engineering and use method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116677323A true CN116677323A (en) | 2023-09-01 |
Family
ID=87777932
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310578884.8A Pending CN116677323A (en) | 2023-05-22 | 2023-05-22 | Core sampling drill bit for environmental monitoring geotechnical engineering and use method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116677323A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118305906A (en) * | 2024-04-29 | 2024-07-09 | 临沂市东辰路桥工程有限公司 | Drilling device for blasting of earth and stone |
-
2023
- 2023-05-22 CN CN202310578884.8A patent/CN116677323A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118305906A (en) * | 2024-04-29 | 2024-07-09 | 临沂市东辰路桥工程有限公司 | Drilling device for blasting of earth and stone |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104763328A (en) | Hydraulic reaming circulation drilling machine and reaming pile construction technology thereof | |
| CN116677323A (en) | Core sampling drill bit for environmental monitoring geotechnical engineering and use method thereof | |
| CN204492720U (en) | There is the geological prospecting rope drilling tool of automatic adjusting mechanism | |
| CA3004688C (en) | An engineering geological drilling construction method based on wire line coring drilling tool | |
| CN100392195C (en) | Long-spiral drilling machine screw-thread pile piling device and method | |
| CN111852452A (en) | Drilling and pushing integrated precise drilling peeping device and method | |
| CN109487774B (en) | Pre-drilling type lateral pressure test drilling equipment and hole forming method thereof | |
| CN117108197A (en) | Drilling device for geotechnical engineering investigation | |
| CN109057712B (en) | Anchor cable pore-forming two-stage sleeve construction method | |
| CN111636838B (en) | Complex stratum double-isolation self-locking type three-layer pipe rope core drilling tool | |
| CN220203802U (en) | Reaming drilling tool for body-expanding anchor rod | |
| CN201152148Y (en) | Soil horizon hole external lifting and pressing type reamer bit | |
| CN111425145A (en) | Drill bit device for pipe curtain construction | |
| CN217925730U (en) | Reaming drilling rod mechanical device in deep foundation pit supporting anchor rod pore-forming | |
| CN217632346U (en) | Double-structure claw coring tool with jaw differential motion and adjustable gap | |
| CN113089667B (en) | Sinking construction method of steel casing | |
| CN208686315U (en) | A kind of drill bit for fast drilling in detecting earth stress | |
| CN219431856U (en) | Structure of split detachable anchor rod construction sleeve | |
| CN217129459U (en) | Well drilling tool is built to cavity spiral | |
| CN210564663U (en) | A appurtenance that is used for pit shaft unstability to destroy to differentiate monitoring | |
| CN213456929U (en) | Drilling rod stabilising arrangement suitable for broken rock experimental apparatus of laser machine | |
| CN219234052U (en) | Hard alloy deep hole drill bit | |
| CN220378304U (en) | Detachable roof bolter | |
| CN216950250U (en) | Combined drill bit for fishing foreign matters in hole | |
| CN221442492U (en) | Drill bit convenient to change |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |