CN113374431B - Core drilling device for geological exploration - Google Patents
Core drilling device for geological exploration Download PDFInfo
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- CN113374431B CN113374431B CN202110661356.XA CN202110661356A CN113374431B CN 113374431 B CN113374431 B CN 113374431B CN 202110661356 A CN202110661356 A CN 202110661356A CN 113374431 B CN113374431 B CN 113374431B
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- 238000005553 drilling Methods 0.000 title claims abstract description 102
- 238000005520 cutting process Methods 0.000 claims abstract description 43
- 239000002826 coolant Substances 0.000 claims abstract description 12
- 239000007788 liquid Substances 0.000 claims abstract description 11
- 239000003921 oil Substances 0.000 claims description 63
- 239000003292 glue Substances 0.000 claims description 62
- 239000010720 hydraulic oil Substances 0.000 claims description 56
- 239000000110 cooling liquid Substances 0.000 claims description 41
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 41
- 238000007789 sealing Methods 0.000 claims description 35
- 239000003638 chemical reducing agent Substances 0.000 claims description 34
- 230000000712 assembly Effects 0.000 claims description 33
- 238000000429 assembly Methods 0.000 claims description 33
- 238000001816 cooling Methods 0.000 claims description 31
- 239000007921 spray Substances 0.000 claims description 29
- 238000005507 spraying Methods 0.000 claims description 28
- 238000003825 pressing Methods 0.000 claims description 21
- 238000005192 partition Methods 0.000 claims description 13
- 238000001125 extrusion Methods 0.000 claims description 12
- 238000004026 adhesive bonding Methods 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 claims description 3
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 2
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 2
- 241001330002 Bambuseae Species 0.000 claims description 2
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 2
- 239000011425 bamboo Substances 0.000 claims description 2
- 239000011435 rock Substances 0.000 abstract description 35
- 238000005070 sampling Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000012466 permeate Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000006748 scratching Methods 0.000 description 1
- 230000002393 scratching effect Effects 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B25/00—Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors
- E21B25/16—Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors for obtaining oriented cores
-
- 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
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B25/00—Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors
- E21B25/08—Coating, freezing, consolidating cores; Recovering uncontaminated cores or cores at formation pressure
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B25/00—Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors
- E21B25/10—Formed core retaining or severing means
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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
Core bores gets device for geological exploration, including the well drilling drill bit, outer drill barrel, center delivery pipe and four group core subassemblies, center delivery pipe concentric center sets up in outer drill barrel, well drilling drill bit fixed mounting is at the lower extreme of outer drill barrel, the ring chamber between outer drill barrel and the center delivery pipe is separated for four through four vertical baffles and holds the chamber, four group core subassemblies correspond respectively and accomodate the setting in four hold the chamber, circumference array is provided with a plurality of supporting mechanism on the outer circumference of outer drill barrel, the lower extreme of center delivery pipe is provided with first electronic stop valve, the upper end and the ground coolant liquid duct connection of center delivery pipe, all be connected with the coolant liquid feed pipe between center delivery pipe and each group core subassembly, all be provided with the electronic stop valve of second on each coolant liquid feed pipe. The invention can take the rock core at four target depth layers at one time, has high efficiency, does not need to repeatedly lift a drilling bit, has small workload, and drills the rock core at the side surface of the well wall to perform circular cutting and truncation on the rock core, thereby the section of the rock core is smooth.
Description
Technical Field
The invention relates to the technical field of geological exploration, in particular to a core drilling device for geological exploration.
Background
The core is an important material for researching and knowing underground geology and mineral production conditions, for example, in the exploration and development of oil and gas fields, according to stratum horizons and design depths obtained by exploration, a coring tool is put into a well after drilling, and the core is drilled, so that the characteristics of underground oil layers and contained fluids are known.
Generally, coring is to drill a well first and then to drill a core bit, and only one core can be drilled at one time, so that the efficiency is low, if a deeper core needs to be drilled again, the drill bit needs to be lowered again, the workload is large, and the core is usually broken during coring, so that the core and the core bit are easily damaged, and the section of the core is not flat.
Disclosure of Invention
The invention aims to provide a rock core drilling device for geological exploration, which can be used for drilling rock cores at a plurality of target depth layers at one time, has high efficiency, does not need to repeatedly lift a drilling bit, has small workload, and drills the rock cores on the side surface of a well wall to perform circular cutting and truncation on the rock cores, so that the rock core section is flat.
In order to achieve the purpose, the invention adopts the following technical scheme:
the core drilling device for geological exploration comprises a drilling bit, an outer drilling barrel, a central water supply pipe and four groups of core assemblies, wherein the central water supply pipe is concentrically arranged in the outer drilling barrel, the drilling bit is fixedly arranged at the lower ends of the outer drilling barrel and the central water supply pipe, four vertical partition plates are arranged on an inner circumference array of an annular cavity between the outer drilling barrel and the central water supply pipe and divide the annular cavity between the outer drilling barrel and the central water supply pipe into four containing cavities, the four groups of core assemblies are respectively and correspondingly contained in the four containing cavities, four swinging through holes are arranged on the barrel wall of the outer drilling barrel corresponding to the four groups of core assemblies, four closing door structures for respectively and correspondingly sealing the four swinging through holes are arranged on the inner side of the barrel wall of the outer drilling barrel, a plurality of installation grooves with outer side openings are arranged on the outer circumference array of the upper side and the lower side of the outer drilling barrel corresponding to the four groups of core assemblies, and a supporting mechanism is arranged in each installation groove, the lower extreme of center delivery pipe is provided with the first electronic stop valve that is located a set of core subassembly below of downside, the upper end and the ground coolant liquid duct connection of center delivery pipe, and the coaxial axial bolted connection of a standard drilling rod lower extreme of outer drill section of thick bamboo upper end and lower part, the lower extreme fixed connection of center delivery pipe is in the central apopore upper end of well drilling drill bit, all is connected with the coolant liquid feed pipe between center delivery pipe and each group's the core subassembly, all is provided with the electronic stop valve of second on each coolant liquid feed pipe.
The left coring component comprises a horizontal support plate, a hydraulic motor speed reducer, two first hydraulic cylinders and two second hydraulic cylinders, the front side and the rear side of the right side of the horizontal support plate are respectively hinged on two corresponding left vertical partition plates, the upper surface of the horizontal support plate is provided with two guide rails which are arranged at intervals along the left-right direction, the bottom of the hydraulic motor speed reducer is connected on the two guide rails in a sliding manner, the middle part of the left side of a casing of the hydraulic motor speed reducer is fixedly provided with a support sleeve which is sleeved outside a power shaft of the hydraulic motor speed reducer, the outer circumference of the power shaft of the hydraulic motor speed reducer is connected with the inner circumference of the support sleeve in a sealing and rotating manner, the left end of the power shaft of the hydraulic motor speed reducer is connected with a coring drill rod in a coaxial transmission manner, the right side part of the coring drill rod is connected in the support sleeve in a sealing and rotating manner, the left side part of the drill rod extends out of the left end of the support sleeve, the middle part of the drill rod is provided with a coring cavity with an opening on the left side, the left end of the coring drill rod is connected with a coring bit which is a hollow bit, the inner diameter of the coring bit is the same as that of the coring cavity, the front and back of two first hydraulic cylinders are vertically arranged below the horizontal support plate at intervals, the bottom parts of the cylinder bodies of the two first hydraulic cylinders are respectively hinged on the two corresponding left vertical partition plates, the piston rods of the two first hydraulic cylinders extend upwards and are respectively hinged on the front side and the back side of the middle part of the lower surface of the horizontal support plate, the front and back of two second hydraulic cylinders are horizontally arranged above the horizontal support plate along the left and right direction at intervals, the bottom parts of the cylinder bodies of the two second hydraulic cylinders are respectively hinged on the two corresponding left vertical partition plates, the piston rods of the two second hydraulic cylinders extend leftwards and are respectively hinged on the front side surface and the back side surface of a casing of a hydraulic motor reducer, and the left side part of the outer circumference of the coring drill rod is provided with four circular cutting through holes in a circumferential array, the annular cutting through hole is arranged along the radial direction, the inner end of the annular cutting through hole is communicated with the inside of the coring cavity, a cylindrical annular cutter is arranged in the annular cutting through hole in a sealing and sliding mode, a circular end cover used for sealing and plugging the annular cutting through hole is fixedly connected to the outer circumference of the coring drill rod at the outer end of the annular cutting through hole, the inner end of the cylindrical annular cutter is a conical cutting edge, the inner end of the cylindrical annular cutter is flush with the inner end of the annular cutting through hole, the outer end of the cylindrical annular cutter is located in the annular cutting through hole, an outside open force application blind hole is formed in the middle of the outer end face of the cylindrical annular cutter, a first tension spring is connected between the bottom of the force application blind hole and the middle of the inner surface of the circular end cover, a hydraulic annular cavity is concentrically arranged on the left side portion of the coring drill rod, a plurality of first oil supply channels respectively correspondingly communicated with the hydraulic annular cavity and the annular cutting through holes are arranged on the left side portion of the outer circumference of the coring drill rod, first hydraulic annular grooves which are formed in a left and right side portion and right side of the outer circumference of the coring drill rod, and are spaced first hydraulic annular grooves, Second hydraulic pressure annular and cooling ring groove, the last side of coring drilling rod is equipped with the second oil feed passageway of intercommunication first hydraulic pressure annular and hydraulic pressure ring chamber along the axial, the first oil delivery passageway has radially been seted up on supporting sleeve's left side upper portion, the inner and the first hydraulic pressure annular intercommunication of first oil delivery passageway, the outer end of first oil delivery passageway is connected with first oil feed pipe through first oil supply connector, the chamber bottom center of coring chamber is equipped with the atmospheric pressure recess, core drilling rod middle part downside is equipped with the atmospheric pressure passageway with atmospheric pressure recess intercommunication, the outer end of atmospheric pressure passageway is located coring drilling rod lateral part down and installs the air entrainment and seals the lid, be provided with on the coring drilling rod and spout gluey leak protection gas system, be provided with cooling pipeline system on the coring bit.
The glue spraying air leakage preventing system comprises two fan-shaped spray heads, a glue supplying ring cavity positioned on the left side of the hydraulic ring cavity is concentrically arranged at the left end part of the coring drill rod, the diameter of the glue supplying ring cavity is smaller than that of the hydraulic ring cavity, a glue spraying through hole is radially arranged on the front upper side and the rear lower side of the left end part of the coring drill rod, the two glue spraying through holes are radially symmetrical, the glue spraying through holes on the front upper side are obliquely arranged from left to right, the outer ends of the two glue spraying through holes are communicated with the glue supplying ring cavity, the inner ends of the two glue spraying through holes are communicated with the coring cavity, the two fan-shaped spray heads are respectively and fixedly arranged in the two glue spraying through holes in a sealing way, the spraying ends of the two fan-shaped spray heads are respectively flush with the inner ends of the two glue spraying through holes, the fan-shaped spray head on the front upper side sprays towards the rear lower side towards the front upper side, a glue adding channel is radially arranged on the front upper side of the left end part of the coring drill rod, the inner of the gluing channel is communicated with the glue supply circular ring cavity, the outer end of the gluing channel is provided with a glue supply sealing cover, a cylindrical hydraulic cavity is axially arranged on the front upper side of the left side of the core drill rod, an extrusion piston is arranged in the cylindrical hydraulic cavity in a sealing and sliding mode, a second tension spring is connected between the right side face of the extrusion piston and the right side face of the cylindrical hydraulic cavity, a third oil supply channel communicated with a second hydraulic ring groove and the cylindrical hydraulic cavity is axially arranged on the front upper side of the left end of the core drill rod, a fourth oil supply channel communicated with the glue supply circular ring cavity and the cylindrical hydraulic cavity is axially arranged on the front upper side of the left end of the core drill rod, a second oil supply channel is radially arranged on the front upper side of the middle of the supporting sleeve, the inner end of the second oil supply channel is communicated with the second hydraulic ring groove, and the outer end of the second oil supply channel is connected with a second oil pipe through a second oil supply connector.
The cooling pipeline system comprises a plurality of cooling liquid spray holes, each cooling liquid spray hole is uniformly arranged on the ring surface of the left end of the coring bit, a cooling circular ring cavity is arranged in the middle of the coring bit in a concentric mode, a plurality of first cooling liquid channels which are respectively communicated with the cooling circular ring cavity and the cooling liquid spray holes are axially arranged on the left side of the coring bit, a second cooling liquid channel which is communicated with the left side and the right side of the coring bit is axially arranged on the front lower portion of the right side of the coring bit and the front lower portion of the coring drill rod, the left end of the second cooling liquid channel is communicated with the cooling circular ring cavity, the right end of the second cooling liquid channel is communicated with the cooling circular groove, a water delivery channel is radially arranged on the front lower side of the right side of the supporting sleeve, the inner end of the water delivery channel is communicated with the cooling circular groove, and the outer end of the water delivery channel is connected with a cooling liquid supply pipe through a water supply joint.
The left opening and closing door structure comprises a sealed door and a third hydraulic oil cylinder, the size of the sealed door is matched with the left swing-out through hole, the sealed door is an arc-shaped plate structure matched with the shape of the wall of the outer drill cylinder in shape, the front side edge and the rear side edge of the sealed door respectively correspond to the inner side faces of the wall of the outer drill cylinder at the edges of the front side and the rear side of the swing-out through hole in a sliding mode, the vertical fixed mounting of the third hydraulic oil cylinder is arranged on the left side in the wall of the outer drill cylinder and is located right above the sealed door, a piston rod of the third hydraulic oil cylinder extends downwards, the middle of the upper side edge of the lower end of the piston rod of the third hydraulic oil cylinder is fixedly connected with the lower end of the sealed door, and the outer circle of the sealed door is provided with a sealing strip which is connected with the inner circle of the outer drill cylinder.
The left supporting mechanism comprises an articulated support, a vertical supporting pressing plate and a fourth hydraulic oil cylinder, the articulated support is fixedly installed at the bottom of a left mounting groove through a plurality of screws, the vertical supporting pressing plate is vertically arranged along the front and back direction and is positioned on the left side of the left mounting groove, the bottom of a cylinder body of the fourth hydraulic oil cylinder is hinged to the upper side of the articulated support, a piston rod of the fourth hydraulic oil cylinder extends out towards the upper left side, the upper end of the piston rod of the fourth hydraulic oil cylinder is hinged to the upper side of the middle part of the right side face of the vertical supporting pressing plate, a first connecting rod is hinged to the lower side of the middle part of the right side face of the vertical supporting pressing plate, the first connecting rod is inclined in the left-high-right direction, two parallel second connecting rods are hinged between the right side part of the first connecting rod and the lower side part of the articulated support, and the left side face of the vertical supporting pressing plate is a rough face.
Compared with the prior art, the invention has outstanding substantive characteristics and remarkable progress, and specifically, the working principle of the invention is as follows: the method comprises the steps that firstly, an outer drill cylinder and a drilling bit are driven to drill downwards in a geological exploration area through a ground drilling platform, a ground cooling liquid conveying pipe conveys cooling liquid into a central water supply pipe, a first electric stop valve is in an open state, each second electric stop valve is in a closed state, a piston rod of each fourth hydraulic oil cylinder is in a contraction state, each vertical supporting pressing plate is correspondingly accommodated in a notch of each mounting groove, each group of coring assemblies are accommodated in corresponding accommodating cavities respectively, the cooling liquid flows to the drilling bit through the central water supply pipe, the drilling bit in the drilling process is cooled, meanwhile, water flow enables drill residues to be upwards discharged from an annular cavity between the outer drill cylinder, a drill rod and a drilling well wall, when the drilling bit drills to a preset sampling depth, each group of coring assemblies reaches the position of a rock stratum to be sampled correspondingly, the drilling bit stops drilling, and the first electric stop valve is closed, a mud pipe is placed downwards at a well mouth through an annular cavity between a drill rod and a well drilling well wall, the lower port of the mud pipe is placed downwards to be basically contacted with a well drilling bit and then is stopped to be placed downwards, a mud pump is started to pump out mud in the annular cavity between an outer drill cylinder, the drill rod and the well drilling well wall so as to provide a waterless environment for sampling, then piston rods of all fourth hydraulic oil cylinders are controlled to extend out simultaneously, the piston rods of the fourth hydraulic oil cylinders push corresponding vertical supporting pressing plates to extend out and press the vertical supporting pressing plates tightly on the well wall, so that the outer drill cylinder can be stably supported in the well drilling well, then piston rods of a third hydraulic oil cylinder above a first group of coring assemblies are controlled to contract upwards, a corresponding closed door is pulled by a piston of the third hydraulic oil cylinder to move upwards, a swinging through hole corresponding to the first group of coring assemblies is opened, and then piston rods of two corresponding first hydraulic oil cylinder assemblies are controlled to extend out simultaneously, the piston rods of the two second hydraulic cylinders contract, the piston rods of the two first hydraulic cylinders push the corresponding horizontal support plates to upwards overturn from inclination to horizontal, the two second hydraulic cylinders also rotate to horizontal, then the hydraulic motor speed reducers of the first group of coring assemblies are started, the corresponding second electric stop valves are opened, the power shafts of the hydraulic motor speed reducers drive the corresponding coring drill rods to rotate at high speed, the coring drill rods drive the coring drill bits to rotate at high speed, the piston rods of the two second hydraulic cylinders are controlled to simultaneously extend out, the piston rods of the two second hydraulic cylinders push the hydraulic motor speed reducers to move outwards on the corresponding guide rails, the hydraulic motor speed reducers outwards extend out of the outer drill barrels through swinging out through holes, the coring drill bits laterally drill the well wall, and meanwhile, the cooling liquid in the central water supply pipe passes through the corresponding cooling liquid supply pipe, the water supply joint and the water delivery passage, The cooling ring groove, the second cooling liquid channel, the cooling ring cavity, each first cooling liquid channel and each cooling liquid spray hole are sprayed out from the outer end face of the core bit to realize cooling of the core bit, the core bit is drilled into a well wall for a certain distance, under the drilling action of the core bit, a section of cylindrical rock core is filled in the core cavity of the core bit, then piston rods of two second hydraulic cylinders stop acting, hydraulic oil is pumped into the hydraulic ring cavity through the first oil supply pipe, the first oil supply joint, the first oil delivery channel, the first hydraulic ring groove and the second oil supply channel, the hydraulic oil in the hydraulic ring cavity is injected into each ring cutting through hole through each first oil supply channel, the pressure of the hydraulic oil is greater than the tension of each first tension spring, the hydraulic oil presses each cylindrical ring cutter to synchronously move inwards, the inner end of each cylindrical ring cutter inwards extends into the core cavity and presses the outer circumference of the rock core, each cylindrical ring cutter rotates along with the coring drill rod to cut the core, each cylindrical ring cutter gradually moves inwards under the action of hydraulic oil until the inner end of each cylindrical ring cutter extends into the center of the coring cavity to cut off the core, the section of the core is flat, the oil pressure is discharged, the hydraulic oil pressure is reduced to zero, each cylindrical ring cutter outwards moves under the action of each first tension spring to reset into each ring cutting through hole, the hydraulic motor reducer stops rotating, the second electric stop valve is closed, hydraulic oil is pumped into the cylindrical hydraulic cavity through the second oil supply pipe, the second oil supply joint, the second oil delivery channel, the second hydraulic annular groove and the third oil supply channel, wherein, at the beginning, the glue adding sealing cover is opened in advance, glue solution is fully added into the glue supplying circular cavity through the glue adding channel, the glue adding sealing cover is screwed, and the hydraulic oil pressure is greater than the tension of the second tension spring, the hydraulic oil presses the extrusion piston to move the extrusion piston leftwards, the extrusion piston extrudes glue solution, the glue solution is sprayed out through the two fan-shaped spray heads and is respectively and evenly sprayed on the cross section of the rock core, the glue solution permeates into a gap between the cross section of the rock core and the inner wall of the core taking cavity and is solidified, so that the gap between the cross section of the rock core and the inner wall of the core taking cavity is sealed, gas contained in the rock core is ensured not to escape, then piston rods of two second hydraulic cylinders are controlled to synchronously contract, the piston rods of the two second hydraulic cylinders pull the hydraulic motor speed reducer to return to reset, so that a core drill rod and a core drill bit are drawn out from a drill hole on a well wall, then the piston rods of two corresponding first hydraulic cylinders of the first group of core taking assemblies are simultaneously controlled to contract, the piston rods of the two second hydraulic cylinders extend out, and the piston rods of the two first hydraulic cylinders pull corresponding horizontal support plates to overturn downwards from the horizontal direction to the inclined direction, the two second hydraulic cylinders also incline to ensure that the hydraulic motor speed reducer, the coring drill rod and the coring bit are accommodated in corresponding accommodating cavities in the outer drill barrel again, then the piston rod of the third hydraulic cylinder is controlled to extend downwards, the piston of the third hydraulic cylinder pushes the first sealing door to move downwards and reset, so that the swinging through hole corresponding to the first group of coring assemblies is closed, then the piston rod of each fourth hydraulic cylinder is controlled to contract and reset simultaneously, each corresponding vertical supporting pressing plate is accommodated in the notch of each mounting groove again, each vertical supporting pressing plate is separated from the well wall, thus, the coring operation of the first group of rock cores is completed, then the first electric stop valve is opened again, the ground drilling platform is restarted, the drilling bit continues to drill downwards to the next target layer, and each group of coring assemblies reaches the position of the rock layer to be sampled correspondingly, stopping drilling of the drilling bit, then performing lateral coring on the well wall at the corresponding rock stratum position to be sampled by the second group coring assembly to obtain a second rock core, repeating the operation to ensure that the third group coring assembly and the fourth group coring assembly all obtain the corresponding rock cores, finally lifting the outer drilling barrel, the central water supply pipe and the drilling bit out of the ground, further lifting the four groups coring assemblies to the ground, removing the coring bit firstly in order to obtain the rock cores in the coring cavities, scratching the solidified rubber by using a cutter, then opening the air-entrapping sealing cover, connecting the outer end of the air pressure channel with an air pump, injecting high-pressure air into the air pressure groove through the air pressure channel, and pushing the rock cores out of the coring cavities of the coring drill rods by the air.
The invention can take the rock core at four target depth layers at one time, has high efficiency, does not need to repeatedly lift a drilling bit, has small workload, and drills the rock core at the side surface of the well wall to perform circular cutting and truncation on the rock core, thereby the section of the rock core is smooth.
Drawings
Fig. 1 is a front view of the present invention.
Fig. 2 is a top simplified view of the present invention.
FIG. 3 is a cross-sectional view of the coring assembly of the present invention as received within an outer drill barrel.
FIG. 4 is a cross-sectional view of the coring assembly of the present invention as it is being drilled.
FIG. 5 is a schematic diagram of the construction of the coring assembly of the present invention.
Fig. 6 is a sectional view taken along line a-a of fig. 5.
Fig. 7 is a sectional view taken along line B-B of fig. 6.
Fig. 8 is a sectional view taken along line C-C of fig. 6.
Fig. 9 is a sectional view taken along line D-D of fig. 6.
Fig. 10 is a schematic structural view of the support mechanism of the present invention.
Fig. 11 is a partial enlarged view at E in fig. 8.
Detailed Description
The embodiments of the present invention are further described below with reference to the drawings.
As shown in figures 1-11, the core drilling device for geological exploration comprises a drilling bit 1, an outer drilling barrel 2, a central water supply pipe 3 and four groups of core assemblies 4, wherein the central water supply pipe 3 is concentrically arranged in the outer drilling barrel 2, the drilling bit 1 is fixedly arranged at the lower ends of the outer drilling barrel 2 and the central water supply pipe 3, four vertical partition plates 5 are arranged on an inner circumference array of a ring cavity between the outer drilling barrel 2 and the central water supply pipe 3, the ring cavity between the outer drilling barrel 2 and the central water supply pipe 3 is divided into four accommodating cavities by the four vertical partition plates 5, the circumference array of the four groups of core assemblies 4 is correspondingly accommodated in the four accommodating cavities respectively, four swinging through holes 6 are formed in the barrel wall of the outer drilling barrel 2 corresponding to the four groups of core assemblies 4, four opening and closing structures for correspondingly blocking the four swinging through holes 6 are arranged on the inner side of the barrel wall of the outer drilling barrel 2, and a plurality of mounting grooves 7 with outer side openings are formed in the outer circumference array corresponding to the upper part and the lower part of the core assemblies 4 on the outer circumference of the outer drilling barrel 2 All install supporting mechanism in each mounting groove 7, the lower extreme of central delivery pipe 3 is provided with the first electronic stop valve that is located the most downside a set of core subassembly 4 below, the upper end and the ground coolant liquid duct connection of central delivery pipe 3, the lower extreme fixed connection of central delivery pipe 3 is in the central apopore upper end of well drilling drill bit 1, central delivery pipe 3 and each group all are connected with coolant liquid feed pipe 8 between the core subassembly 4, all be provided with the electronic stop valve 9 of second on each coolant liquid feed pipe 8.
The left coring assembly 4 comprises a horizontal support plate 10, a hydraulic motor reducer 11, two first hydraulic cylinders 12 and two second hydraulic cylinders 13, the front side and the rear side of the right side of the horizontal support plate 10 are respectively hinged on two corresponding left vertical partition plates 5, the upper surface of the horizontal support plate 10 is provided with two guide rails 14 which are arranged at intervals from front to back along the left-right direction, the bottom of the hydraulic motor reducer 11 is connected on the two guide rails 14 in a sliding manner, the middle part of the left side of a casing of the hydraulic motor reducer 11 is fixedly provided with a support sleeve 15 which is sleeved outside a power shaft of the hydraulic motor reducer 11, the outer circumference of the power shaft of the hydraulic motor reducer 11 is connected with the inner circumference of the support sleeve 15 in a sealing and rotating manner, the left end of the power shaft of the hydraulic motor reducer 11 is connected with a coring drill rod 16 in a coaxial transmission manner, the right side part of the coring drill rod 16 is connected in the support sleeve 15 in a sealing and rotating manner, and the left side part of the coring drill rod 16 extends out of the left end of the support sleeve 15, the middle part of the coring drill rod 16 is provided with a coring cavity 17 with an open left side, the left end of the coring drill rod 16 is connected with a coring bit 18, the coring bit 18 is a hollow bit, the inner diameter of the coring bit 18 is the same as that of the coring cavity 17, the two first hydraulic cylinders 12 are vertically arranged below the horizontal support plate 10 at intervals in the front and back direction, the bottom parts of the two first hydraulic cylinders 12 are respectively hinged on the two corresponding left vertical partition plates 5, the piston rods of the two first hydraulic cylinders 12 extend upwards and are respectively hinged on the front side and the back side of the middle part of the lower surface of the horizontal support plate 10, the two second hydraulic cylinders are horizontally arranged above the horizontal support plate 10 at intervals in the front and back direction, the bottom parts of the two second hydraulic cylinders are respectively hinged on the two corresponding left vertical partition plates 5, the piston rods of the two second hydraulic cylinders extend leftwards and are respectively hinged on the front side surface and the back side surface of the shell of the hydraulic motor reducer 11, the left side part of the outer circumference of the coring drill rod 16 is provided with four circumferential array circular cutting through holes 19, the circular cutting through holes 19 are arranged along the radial direction, the inner ends of the circular cutting through holes 19 are communicated with the inside of the coring cavity 17, a cylindrical circular cutting knife 20 is arranged in the circular cutting through holes 19 in a sealing and sliding manner, the outer circumference of the coring drill rod 16 at the outer end of the circular cutting through holes 19 is fixedly connected with a circular end cover 21 for sealing and blocking the circular cutting through holes 19, the inner end of the cylindrical circular cutting knife 20 is a conical cutting edge, the inner end of the cylindrical circular cutting knife 20 is flush with the inner end of the circular cutting through holes 19, the outer end of the cylindrical circular cutting knife 20 is positioned in the circular cutting through holes 19, the middle part of the outer end surface of the cylindrical circular cutting knife 20 is provided with a force application blind hole 22 with an opening at the outer side, a first tension spring 23 is connected between the hole bottom of the force application blind hole 22 and the middle part of the inner surface of the circular end cover 21, the left side part of the coring drill rod 16 is concentrically provided with a hydraulic circular ring cavity 24, the left side part of the coring drill rod 16 is provided with a plurality of first oil supply channels 25 which are respectively communicated with the hydraulic circular ring cavity 24 and the circular cutting through holes 19 correspondingly, the right side part of the outer circumference of the coring drill rod 16 is provided with a first hydraulic ring groove 26, a second hydraulic ring groove 27 and a cooling ring groove 28 which are opened at the outer side and spaced from each other at the left and right, the upper side part of the coring drill rod 16 is provided with a second oil supply channel 29 which is communicated with the first hydraulic ring groove 26 and the hydraulic circular ring cavity 24 along the axial direction, the upper part of the left side of the supporting sleeve 15 is provided with a first oil conveying channel 30 along the radial direction, the inner end of the first oil conveying channel 30 is communicated with the first hydraulic ring groove 26, the outer end of the first oil conveying channel 30 is connected with a first oil supply pipe 32 through a first oil supply connector 31, the center of the cavity bottom of the coring cavity 17 is provided with an air pressure groove 33, the lower side part of the middle part of the coring drill rod 16 is provided with an air pressure channel 34 which is positioned at the lower side part of the coring drill rod 16 and is provided with an air-adding sealing cover 35, the coring drill rod 16 is provided with a glue spraying air leakage prevention system, and the coring bit 18 is provided with a cooling pipeline system.
The glue spraying air leakage preventing system comprises two fan-shaped spray heads 36, a glue supplying circular ring cavity 37 positioned on the left side of the hydraulic circular ring cavity 24 is concentrically arranged at the left end part of the coring drill rod 16, the diameter of the glue supplying circular ring cavity 37 is smaller than that of the hydraulic circular ring cavity 24, glue spraying through holes 38 are radially arranged on the front upper side and the rear lower side of the left end part of the coring drill rod 16, the two glue spraying through holes 38 are radially symmetrical, the glue spraying through holes 38 on the front upper side are obliquely arranged in the left and right directions outside, the outer ends of the two glue spraying through holes 38 are communicated with the glue supplying circular ring cavity 37, the inner ends of the two glue spraying through holes 38 are communicated with the coring cavity 17, the two fan-shaped spray heads 36 are respectively and fixedly installed in the two glue spraying through holes 38 in a sealing mode, the spraying ends of the two fan-shaped spray heads 36 are respectively flush with the inner ends of the two glue spraying through holes 38, the fan-shaped spray head 36 on the front upper side sprays towards the rear lower side, the fan-shaped spray head 36 on the rear lower side sprays towards the front upper side, a glue adding channel 39 is radially arranged on the front upper side of the left end part of the coring drill rod 16, the inner end of the gluing channel 39 is communicated with the glue supply circular ring cavity 37, the outer end of the gluing channel 39 is provided with a gluing sealing cover 40, the front upper side of the left side of the coring drill rod 16 is axially provided with a cylindrical hydraulic cavity 41, an extrusion piston 42 is arranged in the cylindrical hydraulic cavity 41 in a sealing and sliding manner, a second tension spring 43 is connected between the right side surface of the extrusion piston 42 and the right side surface of the cylindrical hydraulic cavity 41, the front upper side of the coring drill rod 16 is axially provided with a third oil supply channel 44 communicating the second hydraulic ring groove 27 with the cylindrical hydraulic cavity 41, the front upper side of the left end of the coring drill rod 16 is axially provided with a fourth oil supply channel 59 communicating the glue supply circular ring cavity 37 with the cylindrical hydraulic cavity 41, the front upper side of the middle part of the support sleeve 15 is radially provided with a second oil delivery channel 45, the inner end of the second oil delivery channel 45 is communicated with the second hydraulic ring groove 27, and the outer end of the second oil delivery channel 45 is connected with a second oil supply pipe 47 through a second oil supply joint 46.
The cooling pipeline system comprises a plurality of cooling liquid spray holes, each cooling liquid spray hole is uniformly arranged on the ring surface of the left end of the coring bit 18, a cooling circular ring cavity 48 is concentrically arranged in the middle of the coring bit 18, a plurality of first cooling liquid channels 49 which are respectively and correspondingly communicated with the cooling circular ring cavity 48 and each cooling liquid spray hole are axially arranged on the left side of the coring bit 18, a left-right through second cooling liquid channel 50 is axially arranged on the front lower portion of the right side of the coring bit 18 and the front lower portion of the coring drill rod 16, the left end of the second cooling liquid channel 50 is communicated with the cooling circular ring cavity 48, the right end of the second cooling liquid channel 50 is communicated with the cooling circular ring groove 28, a water delivery channel 51 is radially arranged on the front lower side of the right side of the support sleeve 15, the inner end of the water delivery channel 51 is communicated with the cooling circular ring groove 28, and the outer end of the water delivery channel 51 is connected with a cooling liquid supply pipe 8 through a water supply joint 52.
The left opening and closing door structure comprises a sealed door 53 and a third hydraulic oil cylinder, the size of the sealed door 53 is matched with the left swing-out through hole 6, the sealed door 53 is an arc-shaped plate structure matched with the shape of the wall of the outer drill barrel 2, the front side edge and the rear side edge of the sealed door 53 are respectively connected to the inner side surface of the wall of the outer drill barrel 2 at the front side edge and the rear side edge of the swing-out through hole 6 in a sliding mode, the third hydraulic oil cylinder is vertically and fixedly installed in the left side of the wall of the outer drill barrel 2 and located right above the sealed door 53, a piston rod of the third hydraulic oil cylinder extends downwards, the lower end of a piston rod of the third hydraulic oil cylinder is fixedly connected to the middle of the upper side edge of the sealed door 53, and a sealing strip in sealing connection with the inner circle of the outer drill barrel is arranged on the excircle of the sealed door 53.
The left supporting mechanism comprises a hinged support 54, a vertical supporting pressing plate 55 and a fourth hydraulic oil cylinder 56, the hinged support 54 is fixedly installed at the bottom of the left mounting groove 7 through a plurality of screws, the vertical supporting pressing plate 55 is vertically arranged along the front-back direction and is located on the left side of the left mounting groove 7, the bottom of a cylinder body of the fourth hydraulic oil cylinder 56 is hinged to the upper side of the hinged support 54, a piston rod of the fourth hydraulic oil cylinder 56 extends out towards the upper left side, the upper end of the piston rod of the fourth hydraulic oil cylinder 56 is hinged to the upper side of the middle of the right side face of the vertical supporting pressing plate 55, a first connecting rod 57 is hinged to the lower side of the middle of the right side face of the vertical supporting pressing plate 55, the first connecting rod 57 is obliquely arranged in a left-high-right mode, two parallel second connecting rods 58 are hinged to the right side of the right side portion of the first connecting rod 57 and the lower side portion of the hinged support 54, and the left side face of the vertical supporting pressing plate 55 is a rough face.
The first electric stop valve, the ground cooling liquid delivery pipe, the sealing strip and the third hydraulic oil cylinder are not shown in the figure, and hydraulic pipelines and control lines penetrate through the outer drill cylinder 2 and the drill rod to the ground.
The working principle of the invention is as follows: firstly, the outer drill barrel 2 and the drilling bit 1 are driven to drill downwards in a geological exploration area through a ground drilling platform, a ground cooling liquid conveying pipe conveys cooling liquid into a central water supply pipe 3, a first electric stop valve is in an open state, each second electric stop valve 9 is in a closed state, a piston rod of each fourth hydraulic oil cylinder 56 is in a contraction state, each vertical supporting pressure plate 55 is correspondingly accommodated in a notch of each mounting groove 7, each group of coring assemblies 4 are respectively accommodated in corresponding accommodating cavities, the cooling liquid flows to the drilling bit 1 through the central water supply pipe 3 to realize the cooling of the drilling bit 1 in the drilling process, meanwhile, water flow upwards discharges drilling slag carried by the water flow from an annular cavity between the outer drill barrel 2, a drill rod and a drilling well wall, and when the drilling bit 1 drills to a preset sampling depth, each group of coring assemblies 4 reaches a corresponding rock stratum position to be sampled, stopping drilling of the drilling bit 1, closing the first electric stop valve, lowering a mud pipe at a wellhead through an annular cavity between a drill rod and a drilling well wall, stopping lowering when a lower port of the mud pipe is lowered to be basically contacted with the drilling bit 1, starting a mud pump to pump out mud in the annular cavity between the outer drill barrel 2, the drill rod and the drilling well wall, providing a waterless environment for sampling, simultaneously controlling a piston rod of each fourth hydraulic oil cylinder 56 to extend, pushing a corresponding vertical support pressure plate 55 to extend outwards by the piston rod of the fourth hydraulic oil cylinder 56, pressing the vertical support pressure plate 55 on the well wall, enabling the outer drill barrel 2 to be stably supported in the drilling well, controlling a piston rod of a third hydraulic oil cylinder above the first group coring assembly 4 to contract upwards, pulling a corresponding sealed door 53 to move upwards by the piston of the third hydraulic oil cylinder, thereby opening a swing-out through hole 6 corresponding to the first group coring assembly 4, then simultaneously controlling the piston rods of two corresponding first hydraulic cylinders 12 of the first group of coring assemblies 4 to extend, and the piston rods of two second hydraulic cylinders 13 to contract, wherein the piston rods of the two first hydraulic cylinders 12 push corresponding horizontal support plates 10 to turn upwards from inclining to horizontal, and the two second hydraulic cylinders 13 also turn to horizontal, then starting the hydraulic motor reducers 11 of the first group of coring assemblies 4, opening corresponding second electric stop valves 9, driving power shafts of the hydraulic motor reducers 11 to drive corresponding coring drill rods 16 to rotate at high speed, driving the coring drill rods 16 to drive coring drill bits 18 to rotate at high speed, controlling the piston rods of the two second hydraulic cylinders 13 to extend simultaneously, driving the hydraulic motor reducers 11 to move outwards on corresponding guide rails 14, and enabling the hydraulic motors 11 to extend outwards out of the outer drill barrel 2 through the swinging through holes 6, the core drill bit 18 drills the side direction of the well wall, meanwhile, the cooling liquid in the central water supply pipe 3 is sprayed out from the outer end face of the core drill bit 18 through the corresponding cooling liquid supply pipe 8, the water supply connector 52, the water delivery channel 51, the cooling ring groove 28, the second cooling liquid channel 50, the cooling ring cavity 48, each first cooling liquid channel 49 and each cooling liquid spray hole, cooling of the core drill bit 18 is achieved, the core drill rod 16 drills into the well wall for a certain distance, under the drilling action of the core drill bit 18, a section of cylindrical rock core is filled in the core cavity 17 of the core drill rod 16, then the piston rods of the two second hydraulic cylinders 13 stop acting, hydraulic oil is pumped into the hydraulic ring cavity 24 through the first oil supply pipes 32, the first oil supply connectors 31, the first oil delivery channels 30, the first hydraulic ring groove 26 and the second oil supply channels 29, hydraulic oil in the hydraulic ring cavity 24 is pumped into each annular cutting through each first oil supply channel 25, the hydraulic oil pressure is greater than the pulling force of each first tension spring 23, the hydraulic oil presses each cylindrical ring cutter 20 to synchronously move inwards, the inner end of each cylindrical ring cutter 20 extends inwards into the coring cavity 17 and presses against the outer circumference of the rock core, each cylindrical ring cutter 20 rotates along with the coring drill rod 16 to cut the rock core, each cylindrical ring cutter 20 gradually moves inwards under the action of the hydraulic oil until the inner end of each cylindrical ring cutter 20 extends into the center of the coring cavity 17 to cut off the rock core, the rock core section is level, the oil pressure is discharged, the hydraulic oil pressure is reduced to zero, each cylindrical ring cutter 20 moves outwards under the action of each first tension spring 23 to reset into each ring cutting through hole 19, the hydraulic motor 11 stops rotating, the second electric stop valve 9 is closed, and then the second pipe 47 and the second joint 46 supply oil to supply a speed reducer, The second oil delivery channel 45, the second hydraulic pressure groove 27 and the third oil supply channel 44 pump hydraulic oil into the cylindrical hydraulic cavity 41, wherein initially, the glue adding sealing cover 40 is opened in advance, glue solution is fully added into the glue supply circular ring cavity 37 through the glue adding channel 39, then the glue adding sealing cover 40 is screwed, the pressure of the hydraulic oil is greater than the tension of the second tension spring 43, the hydraulic oil presses the extrusion piston 42 to enable the extrusion piston 42 to move leftwards, the extrusion piston 42 extrudes the glue solution, the glue solution is ejected out through the two fan-shaped nozzles 36 and respectively and uniformly sprayed on the section of the core, the glue solution permeates into a gap between the section of the core and the inner wall of the coring cavity 17 and is solidified, the gap between the section of the core and the inner wall of the coring cavity 17 is sealed, gas contained in the core cannot escape, then the piston rods of the two second hydraulic oil cylinders 13 are controlled to synchronously contract, the piston rods of the two second hydraulic oil cylinders 13 pull the hydraulic motor speed reducer 11 to return to reset, the coring drill rod 16 and the coring bit 18 are drawn out from the drilled hole of the well wall, then the piston rods of two corresponding first hydraulic cylinders 12 of the first group of coring assemblies 4 are controlled to contract simultaneously, the piston rods of two second hydraulic cylinders 13 extend out, the piston rods of the two first hydraulic cylinders 12 pull corresponding horizontal support plates 10 to overturn from horizontal to downward to inclination, the two second hydraulic cylinders 13 also rotate to inclination, further the hydraulic motor speed reducer 11, the coring drill rod 16 and the coring bit 18 are stored in corresponding containing cavities in the outer drill barrel 2 again, then the piston rod of the third hydraulic cylinder is controlled to extend out downwards, the piston of the third hydraulic cylinder pushes a first closed door 53 to move downwards for resetting, thereby closing the swing-out through hole 6 corresponding to the first group of coring assemblies 4, then the piston rods of all the fourth hydraulic cylinders 56 are controlled to contract simultaneously for resetting, so that all the corresponding vertical supporting pressure plates 55 are stored in the notches of all the mounting grooves 7 again, each vertical supporting pressure plate 55 is separated from the well wall, so that the coring operation of a first group of cores is completed, then the first electric stop valve is opened, the ground drilling platform is restarted, the drilling drill bit 1 continues to drill downwards to the next target layer, each group of coring assemblies 4 reaches the position of the rock layer to be sampled correspondingly, the drilling of the drilling drill bit 1 is stopped, then the second group of coring assemblies 4 perform lateral coring on the well wall at the position of the rock layer to be sampled correspondingly to obtain a second core, the operation is repeated, so that the third group of coring assemblies 4 and the fourth group of coring assemblies 4 acquire the corresponding cores, finally, the outer drill barrel 2, the central water supply pipe 3 and the drilling drill bit are lifted out of the ground, the four groups of coring assemblies 4 are lifted out of the ground simultaneously, in order to acquire the cores in the coring cavity 17, the coring drill bit 18 can be removed firstly, and (3) cutting the solidified glue by using a cutter, opening the air-entrapping sealing cover 35, connecting the outer end of the air pressure channel 34 with an air pump, injecting high-pressure air into the air pressure groove 33 through the air pressure channel 34, and pushing the core out of the coring cavity 17 of the coring drill rod 16 by the air.
The above embodiments are merely to illustrate rather than to limit the technical solutions of the present invention, and although the present invention has been described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that; modifications and equivalents may be made thereto without departing from the spirit and scope of the invention and it is intended to cover in the claims the invention as defined in the appended claims.
Claims (6)
1. Device is got with core to geological exploration, its characterized in that: the drilling machine comprises a drilling bit, an outer drilling barrel, a central water supply pipe and four groups of coring assemblies, wherein the central water supply pipe is concentrically arranged in the outer drilling barrel, the drilling bit is fixedly arranged at the lower end of the outer drilling barrel, four vertical partition plates are arranged on an inner circumference array of an annular cavity between the outer drilling barrel and the central water supply pipe and divide the annular cavity between the outer drilling barrel and the central water supply pipe into four containing cavities, the four groups of coring assemblies are respectively and correspondingly contained in the four containing cavities, four swinging through holes are formed in the barrel wall of the outer drilling barrel corresponding to the four groups of coring assemblies, four opening and closing door structures which respectively and correspondingly block the four swinging through holes are arranged on the inner side of the barrel wall of the outer drilling barrel, a plurality of mounting grooves with openings at the outer sides are arranged on the outer circumference of the outer drilling barrel corresponding to the upper part and the lower circumference array of the outer drilling barrel, a support mechanism is arranged in each mounting groove, and a first electric stop valve positioned below the lowest group of coring assemblies is arranged at the lower end of the central coring assembly, the upper end and the ground coolant pipe of central delivery pipe are connected, bore a section of thick bamboo upper end and a standard drill rod lower extreme coaxial direction bolted connection of bottommost outward, and the lower extreme fixed connection of central delivery pipe is in the central apopore upper end of well drilling drill bit, and central delivery pipe all is connected with the coolant liquid feed pipe with between each group's the core subassembly, all is provided with the electronic stop valve of second on each coolant liquid feed pipe.
2. The core drilling apparatus for geological exploration according to claim 1, characterized in that: the left coring component comprises a horizontal support plate, a hydraulic motor speed reducer, two first hydraulic cylinders and two second hydraulic cylinders, the front side and the rear side of the right side of the horizontal support plate are respectively hinged on two corresponding left vertical partition plates, the upper surface of the horizontal support plate is provided with two guide rails which are arranged at intervals along the left-right direction, the bottom of the hydraulic motor speed reducer is connected on the two guide rails in a sliding manner, the middle part of the left side of a casing of the hydraulic motor speed reducer is fixedly provided with a support sleeve which is sleeved outside a power shaft of the hydraulic motor speed reducer, the outer circumference of the power shaft of the hydraulic motor speed reducer is connected with the inner circumference of the support sleeve in a sealing and rotating manner, the left end of the power shaft of the hydraulic motor speed reducer is connected with a coring drill rod in a coaxial transmission manner, the right side part of the coring drill rod is connected in the support sleeve in a sealing and rotating manner, the left side part of the drill rod extends out of the left end of the support sleeve, the middle part of the drill rod is provided with a coring cavity with an opening on the left side, the left end of the coring drill rod is connected with a coring bit which is a hollow bit, the inner diameter of the coring bit is the same as that of the coring cavity, the front and back of two first hydraulic cylinders are vertically arranged below the horizontal support plate at intervals, the bottom parts of the cylinder bodies of the two first hydraulic cylinders are respectively hinged on the two corresponding left vertical partition plates, the piston rods of the two first hydraulic cylinders extend upwards and are respectively hinged on the front side and the back side of the middle part of the lower surface of the horizontal support plate, the front and back of two second hydraulic cylinders are horizontally arranged above the horizontal support plate along the left and right direction at intervals, the bottom parts of the cylinder bodies of the two second hydraulic cylinders are respectively hinged on the two corresponding left vertical partition plates, the piston rods of the two second hydraulic cylinders extend leftwards and are respectively hinged on the front side surface and the back side surface of a casing of a hydraulic motor reducer, and the left side part of the outer circumference of the coring drill rod is provided with four circular cutting through holes in a circumferential array, the annular cutting through hole is arranged along the radial direction, the inner end of the annular cutting through hole is communicated with the inside of the coring cavity, a cylindrical annular cutter is arranged in the annular cutting through hole in a sealing and sliding mode, a circular end cover used for sealing and plugging the annular cutting through hole is fixedly connected to the outer circumference of the coring drill rod at the outer end of the annular cutting through hole, the inner end of the cylindrical annular cutter is a conical cutting edge, the inner end of the cylindrical annular cutter is flush with the inner end of the annular cutting through hole, the outer end of the cylindrical annular cutter is located in the annular cutting through hole, an outside open force application blind hole is formed in the middle of the outer end face of the cylindrical annular cutter, a first tension spring is connected between the bottom of the force application blind hole and the middle of the inner surface of the circular end cover, a hydraulic annular cavity is concentrically arranged on the left side portion of the coring drill rod, a plurality of first oil supply channels respectively correspondingly communicated with the hydraulic annular cavity and the annular cutting through holes are arranged on the left side portion of the outer circumference of the coring drill rod, first hydraulic annular grooves which are formed in a left and right side portion and right side of the outer circumference of the coring drill rod, and are spaced first hydraulic annular grooves, Second hydraulic pressure annular and cooling ring groove, the last side of coring drilling rod is equipped with the second oil feed passageway of intercommunication first hydraulic pressure annular and hydraulic pressure ring chamber along the axial, the first oil delivery passageway has radially been seted up on supporting sleeve's left side upper portion, the inner and the first hydraulic pressure annular intercommunication of first oil delivery passageway, the outer end of first oil delivery passageway is connected with first oil feed pipe through first oil supply connector, the chamber bottom center of coring chamber is equipped with the atmospheric pressure recess, core drilling rod middle part downside is equipped with the atmospheric pressure passageway with atmospheric pressure recess intercommunication, the outer end of atmospheric pressure passageway is located coring drilling rod lateral part down and installs the air entrainment and seals the lid, be provided with on the coring drilling rod and spout gluey leak protection gas system, be provided with cooling pipeline system on the coring bit.
3. The core drilling apparatus for geological exploration according to claim 2, characterized in that: the glue spraying air leakage preventing system comprises two fan-shaped spray heads, a glue supplying ring cavity positioned on the left side of the hydraulic ring cavity is concentrically arranged at the left end part of the coring drill rod, the diameter of the glue supplying ring cavity is smaller than that of the hydraulic ring cavity, a glue spraying through hole is radially arranged on the front upper side and the rear lower side of the left end part of the coring drill rod, the two glue spraying through holes are radially symmetrical, the glue spraying through holes on the front upper side are obliquely arranged from left to right, the outer ends of the two glue spraying through holes are communicated with the glue supplying ring cavity, the inner ends of the two glue spraying through holes are communicated with the coring cavity, the two fan-shaped spray heads are respectively and fixedly arranged in the two glue spraying through holes in a sealing way, the spraying ends of the two fan-shaped spray heads are respectively flush with the inner ends of the two glue spraying through holes, the fan-shaped spray head on the front upper side sprays towards the rear lower side towards the front upper side, a glue adding channel is radially arranged on the front upper side of the left end part of the coring drill rod, the inner of the gluing channel is communicated with the glue supply circular ring cavity, the outer end of the gluing channel is provided with a glue supply sealing cover, a cylindrical hydraulic cavity is axially arranged on the front upper side of the left side of the core drill rod, an extrusion piston is arranged in the cylindrical hydraulic cavity in a sealing and sliding mode, a second tension spring is connected between the right side face of the extrusion piston and the right side face of the cylindrical hydraulic cavity, a third oil supply channel communicated with a second hydraulic ring groove and the cylindrical hydraulic cavity is axially arranged on the front upper side of the left end of the core drill rod, a fourth oil supply channel communicated with the glue supply circular ring cavity and the cylindrical hydraulic cavity is axially arranged on the front upper side of the left end of the core drill rod, a second oil supply channel is radially arranged on the front upper side of the middle of the supporting sleeve, the inner end of the second oil supply channel is communicated with the second hydraulic ring groove, and the outer end of the second oil supply channel is connected with a second oil pipe through a second oil supply connector.
4. The core drilling apparatus for geological exploration according to claim 3, characterized in that: the cooling pipeline system comprises a plurality of cooling liquid spray holes, each cooling liquid spray hole is uniformly arranged on the ring surface of the left end of the coring bit, a cooling circular ring cavity is arranged in the middle of the coring bit in a concentric mode, a plurality of first cooling liquid channels which are respectively communicated with the cooling circular ring cavity and the cooling liquid spray holes are axially arranged on the left side of the coring bit, a second cooling liquid channel which is communicated with the left side and the right side of the coring bit is axially arranged on the front lower portion of the right side of the coring bit and the front lower portion of the coring drill rod, the left end of the second cooling liquid channel is communicated with the cooling circular ring cavity, the right end of the second cooling liquid channel is communicated with the cooling circular groove, a water delivery channel is radially arranged on the front lower side of the right side of the supporting sleeve, the inner end of the water delivery channel is communicated with the cooling circular groove, and the outer end of the water delivery channel is connected with a cooling liquid supply pipe through a water supply joint.
5. The core drilling apparatus for geological exploration according to claim 4, wherein: the left opening and closing door structure comprises a sealed door and a third hydraulic oil cylinder, the size of the sealed door is matched with the left swing-out through hole, the sealed door is an arc-shaped plate structure matched with the shape of the wall of the outer drill cylinder in shape, the front side edge and the rear side edge of the sealed door respectively correspond to the inner side faces of the wall of the outer drill cylinder at the edges of the front side and the rear side of the swing-out through hole in a sliding mode, the vertical fixed mounting of the third hydraulic oil cylinder is arranged on the left side in the wall of the outer drill cylinder and is located right above the sealed door, a piston rod of the third hydraulic oil cylinder extends downwards, the middle of the upper side edge of the lower end of the piston rod of the third hydraulic oil cylinder is fixedly connected with the lower end of the sealed door, and the outer circle of the sealed door is provided with a sealing strip which is connected with the inner circle of the outer drill cylinder.
6. The core drilling apparatus for geological exploration, according to any of claims 1 to 5, characterized in that: the left supporting mechanism comprises an articulated support, a vertical supporting pressing plate and a fourth hydraulic oil cylinder, the articulated support is fixedly installed at the bottom of a left mounting groove through a plurality of screws, the vertical supporting pressing plate is vertically arranged along the front and back direction and is positioned on the left side of the left mounting groove, the bottom of a cylinder body of the fourth hydraulic oil cylinder is hinged to the upper side of the articulated support, a piston rod of the fourth hydraulic oil cylinder extends out towards the upper left side, the upper end of the piston rod of the fourth hydraulic oil cylinder is hinged to the upper side of the middle part of the right side face of the vertical supporting pressing plate, a first connecting rod is hinged to the lower side of the middle part of the right side face of the vertical supporting pressing plate, the first connecting rod is inclined in the left-high-right direction, two parallel second connecting rods are hinged between the right side part of the first connecting rod and the lower side part of the articulated support, and the left side face of the vertical supporting pressing plate is a rough face.
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| CN114486345B (en) * | 2022-04-01 | 2022-06-21 | 河北润飒建筑工程有限公司 | Highway detects with road surface core machine of getting |
| CN115157282B (en) * | 2022-07-15 | 2023-06-16 | 承德京城矿业集团有限公司 | Hydraulic mechanical arm for mining machinery |
| CN115126432B (en) * | 2022-08-11 | 2023-05-30 | 山东省煤田地质局第一勘探队 | Efficient deep geothermal resource investigation device and method |
| CN116537726B (en) * | 2023-05-19 | 2024-05-28 | 宁波市电力设计院有限公司 | Coring device for three-dimensional geological modeling |
| CN117905389B (en) * | 2024-03-15 | 2024-05-24 | 中国电建集团西北勘测设计研究院有限公司 | Drilling device for regional fracture rock zone drilling |
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| GB2465829B (en) * | 2008-12-04 | 2012-10-17 | Natural Environment Res Council | Corer |
| US9689256B2 (en) * | 2012-10-11 | 2017-06-27 | Schlumberger Technology Corporation | Core orientation systems and methods |
| WO2016191792A1 (en) * | 2015-06-05 | 2016-12-08 | Benthic Geotech Pty Ltd | Rotary coring apparatus |
| CN105863541B (en) * | 2016-06-20 | 2018-04-27 | 中国地质大学（武汉） | A kind of small-sized multitube core drilling rig in deep-sea |
| CN112324343B (en) * | 2020-12-01 | 2022-11-18 | 中国地质科学院 | Multifunctional compact rock geological exploration drill bit and working method thereof |
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