CN108547588A - A kind of boring and coring devices and methods therefor for weak cementing soft rock - Google Patents
A kind of boring and coring devices and methods therefor for weak cementing soft rock Download PDFInfo
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- CN108547588A CN108547588A CN201810623911.8A CN201810623911A CN108547588A CN 108547588 A CN108547588 A CN 108547588A CN 201810623911 A CN201810623911 A CN 201810623911A CN 108547588 A CN108547588 A CN 108547588A
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- boring
- coring
- shaft coupling
- soft rock
- ventilation shaft
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- 239000011435 rock Substances 0.000 title claims abstract description 91
- 238000000034 method Methods 0.000 title claims abstract description 26
- 230000008878 coupling Effects 0.000 claims abstract description 78
- 238000010168 coupling process Methods 0.000 claims abstract description 78
- 238000005859 coupling reaction Methods 0.000 claims abstract description 78
- 238000009423 ventilation Methods 0.000 claims abstract description 70
- 238000007789 sealing Methods 0.000 claims abstract description 66
- 241001074085 Scophthalmus aquosus Species 0.000 claims description 30
- 230000005540 biological transmission Effects 0.000 claims description 11
- 238000005553 drilling Methods 0.000 claims description 11
- 238000001816 cooling Methods 0.000 claims description 8
- 238000004891 communication Methods 0.000 claims description 4
- 238000012545 processing Methods 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 3
- 238000012806 monitoring device Methods 0.000 claims 1
- 239000000112 cooling gas Substances 0.000 abstract description 5
- 239000007789 gas Substances 0.000 description 48
- 229910003460 diamond Inorganic materials 0.000 description 7
- 239000010432 diamond Substances 0.000 description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000007710 freezing Methods 0.000 description 5
- 230000008014 freezing Effects 0.000 description 5
- 239000002893 slag Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 239000002826 coolant Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000009533 lab test Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 238000013022 venting Methods 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
- E21B25/00—Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/02—Core bits
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/42—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits
- E21B10/43—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits characterised by the arrangement of teeth or other cutting elements
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B12/00—Accessories for drilling tools
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/16—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor using gaseous fluids
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
Abstract
The present invention provides a kind of boring and coring devices and methods therefor for weak cementing soft rock, and the boring and coring device includes：One end of boring and coring drill bit, ventilation shaft coupling, sealing shroud and low temperature air supply system, the ventilation shaft coupling is connected with boring and coring drill bit, and the middle part movable sleeve of the ventilation shaft coupling is equipped with sealing shroud；A kind of boring and coring method for weak cementing soft rock includes the following steps：1, the assembling of boring and coring device, 2, the adjusting of low temperature air supply system, 3, the boring and coring of weak cementing soft rock, 4, the taking-up of core；The present invention enters the part of drill body inside and outside wall by boring tooth depth, inside and outside wall is cut during realizing soft rock boring and coring, and it greatly reduces core and bores the contact of wall, it is matched with sealing shroud by ventilation shaft coupling, realize the inflow of cooling gas, to provide larger deslagging space during soft rock boring and coring, while the cooling gas circulated provides power for deslagging, improves soft rock coring success rate.
Description
Technical field
The invention belongs to coring bit processing technique fields, and in particular to a kind of boring and coring for weak cementing soft rock fills
It sets and its method.
Background technology
Laboratory test is a kind of important means for the physico-mechanical properties for probing into rock, before testing indoors, is needed to existing
The rock specimens of field acquisition carry out boring and coring, however when studying weak cementing soft rock, in the boring and coring to weak cementing soft rock
In the process, the problem of easily encountering core fracture and bit freezing, causes soft rock coring success rate extremely low.
In the prior art, in soft rock coring problem, some investigators' use drills through after freezing, using liquid nitrogen and liquid
Carbon dioxide is drilled through or is directly drilled through in frozen environment as cooling medium, though these methods limited can improve successfully
Rate, but can greatly disturbance be generated to weak cementing soft rock, test requirements document cannot be met.
The loading characteristic discovery of column core causes in the softening of comprehensive analysis soft rock chance water, the characteristic of argillization and drilling operation
The extremely low reason of coring success rate is：(1) since the coolant liquid in drilling operation is water in most cases, and it is strong after soft rock chance water
Degree reduces；(2) core is completely attached to drill bit inner wall in drilling operation, and the space of deslagging is small, and core is by the torsion being superimposed
Square；(3) due to argillization after soft rock chance water, lead to the sticky not easy-to-discharge slag of landwaste, further increase the torque of core.
Chinese patent CN104596790B discloses " a kind of soft rock dry type coring device and coring method ", including core drill
Head, interior wind formula cooling system and exogenous wind formula dust collecting system, can realize cooling drill bit and chip removal dual function, but its core is still
It is complete and bit contact, friction gap between the two is only leaned on to carry out deslagging, slag discharge room is easy to happen blockings, therefore, shows away from small
There is technology not to be fully recognized that the extremely low essential reason of soft rock core-taking rate, and fails comprehensively solve this technical barrier.
Accordingly, it is desirable to provide a kind of improved technology scheme insufficient for the above-mentioned prior art.
Invention content
The purpose of the present invention is to provide a kind of boring and coring devices and methods therefors for weak cementing soft rock, at least to solve
Core torque is big during being certainly directed to weak cementing soft rock boring and coring in the prior art, and deslagging space is small, is produced to weak cementing soft rock
Raw disturbance, the low success rate of problem of coring.
To achieve the goals above, the present invention provides the following technical solutions：
A kind of boring and coring device for weak cementing soft rock, the boring and coring device include：Boring and coring drill bit leads to
One end of gas shaft coupling, sealing shroud and low temperature air supply system, the ventilation shaft coupling is connected with boring and coring drill bit, the ventilation
The middle part movable sleeve of shaft coupling is equipped with sealing shroud, the boring and coring drill bit, ventilation shaft coupling and sealing shroud coaxial arrangement；
The boring and coring drill bit includes the drill body of hollow structure and the brill tooth in drill body one end, multiple brills is arranged
Tooth is circumferentially distributed along the end of the drill body；It is fastened on the wall of the drill body end in the middle part of the brill tooth, and the brill tooth
Both ends along the drill body end wall is inside, outer extension, in order to core and the drill body madial wall of weak cementing soft rock
Form internal clearance, form external series gap between weak cementing soft rock and drill body lateral wall, the internal clearance, the two neighboring brill tooth it
Between gap and the external series gap formed one ventilation and deslagging channel；
The ventilation shaft coupling side wall be equipped with the first air admission hole, the first air admission hole be in communication with the outside and with ventilation shaft coupling in
The hollow lumen in portion penetrates through, and is used for transmission cryogenic gas；
Along the first cavity for being axially arranged with perforation of the sealing shroud, the sealing shroud is set in described by the first cavity
The middle part of ventilation shaft coupling；The sealing shroud side wall is equipped with the second air admission hole, for being passed through cryogenic gas；In the sealing shroud also
Equipped with the second cavity, first air admission hole is located in second cavity, and second air admission hole is connected to second cavity,
The cryogenic gas in the sealing shroud is facilitated access for flow into the ventilation shaft coupling；
Connection, low temperature gas is connected with the second air admission hole on the sealing shroud in inlet suction port in the low temperature air supply system
Body enters the sealing shroud, is then entered in the drill body by the ventilation shaft coupling, and then cool down to the brill tooth, and
Power is provided for the deslagging of landwaste.
In the boring and coring device for being used for weak cementing soft rock as described above, it is preferable that the boring and coring drill bit further includes
Annular convex platform, the annular convex platform inner hollow, the bottom end of the annular convex platform is connect with the other end of the drill body, described
The top of annular convex platform is flexibly connected with one end of the ventilation shaft coupling；
Preferably, the drill body is equipped with graduation mark, and depth is drilled through for accurately controlling.
As described above be used for weak cementing soft rock boring and coring device, it is preferable that the annular convex platform by bottom end outside
Side wall is threadedly coupled with the drill body, and the annular convex platform is threadedly coupled by the threaded hole on top with the ventilation shaft coupling；
Preferably, bayonet is additionally provided on the apical lateral face of the annular convex platform, the bayonet is two be oppositely arranged
Plane is dismantled convenient for the annular convex platform.
In the boring and coring device for being used for weak cementing soft rock as described above, it is preferable that the ventilation shaft coupling other end connection
Motor transmission shaft, the ventilation shaft coupling is for driving the drill body to rotate.
As described above be used for weak cementing soft rock boring and coring device, it is preferable that the ventilation shaft coupling be include thin axis
The multi-diameter shaft of section and thick shaft part, the thin shaft part outside are threadedly coupled with the annular convex platform top inner side wall, the ventilation connection
The thick shaft part of axis connects motor transmission shaft.
In the boring and coring device for being used for weak cementing soft rock as described above, it is preferable that the low temperature air supply system includes gas
Pump, cryogenic gas holding vessel, the first valve, the second valve, flow rate monitors, temperature monitor and inlet suction port；
One end of second valve is connect with the air pump, and the other end is connect with one end of the temperature monitor, and
The first valve is additionally provided between second valve and the air pump, one end of first valve is connected to described second
On pipeline between valve and the air pump, the other end of first valve connects the cryogenic gas holding vessel, for controlling
Make keying and the flow velocity of the cryogenic gas holding vessel；It is additionally provided in second valve and between temperature monitor flow velocity
Monitor, the temperature monitor and the flow rate monitors are used to show access into the temperature of the cryogenic gas in boring and coring device
Degree and flow velocity；The other end of the temperature monitor connects inlet suction port.
In the boring and coring device for being used for weak cementing soft rock as described above, it is preferable that multiple brill teeth are in the drill body
End in high outside and low outside shape arrange, it is described bore tooth one end installation position less than it is described bore tooth the other end, that is, brill tooth
It is less than the described brill one end of tooth far from the drill body axle center towards the one end in the drill body axle center.
Preferably, the brill tooth is convenient for deslagging in the arc-shaped foliaceous arrangement in the drill body end face.
In the boring and coring device for being used for weak cementing soft rock as described above, it is preferable that on the thick shaft part of the ventilation shaft coupling
Equipped with the first seal groove, the sealing shroud interior sidewall surface is equipped with the second seal groove, and sealing ring is fastened on first seal groove
In second seal groove, axial restraint of the sealing shroud on the ventilation shaft coupling is realized, while realizing cryogenic gas
Sealing.
In the boring and coring device for being used for weak cementing soft rock as described above, it is preferable that first seal groove and second close
There are two sealing groove is equal, two second seal grooves are arranged in the end face both sides of second cavity, second seal groove and
First seal groove is correspondingly arranged.
A kind of boring and coring method for weak cementing soft rock, the boring and coring method include the following steps：
Step 1, the assembling of boring and coring device：
Sealing shroud is inserted in ventilation shaft coupling by the first cavity first, then by the motor drive of shaft coupling and corning machine of ventilating
Secondly boring and coring drill bit is twisted on ventilation shaft coupling, low temperature is supplied second air inlet of the system access to sealing shroud by axis connection
Hole finally will need the weak cementing soft rock processed to be fixed on the processing platform of corning machine；
Step 2, the adjusting of low temperature air supply system：
It is first turned on air pump, then observes flow rate monitors, the second valve is adjusted, gas velocity is made to reach desired value；Again
Temperature monitor is observed, the first valve is adjusted, gas temperature is made to be in desired value；
Step 3, the boring and coring of weak cementing soft rock：
It is first turned on corning machine, boring and coring drill bit is driven to carry out building up by welding and axial feed, then observation is arranged in real time
Slag situation, the first valve of constantly regulate and the second valve are to control temperature and flow velocity；
In location of the coring procedure, cryogenic gas enters the second cavity by the second air admission hole, enters drilling by the first air admission hole and takes
Core drill bit internal, then the spacing between boring tooth is entered by core and boring and coring drill bit internal clearance, finally by core and drilling
Coring bit external series gap is discharged with landwaste, realizes the cooling for boring tooth and deslagging；
Step 4, the taking-up of core：
It is first a small amount of to promote boring and coring drill bit when boring and coring drill bit end is close to soft rock bottom, turn off corning machine
Motor is then shut off low temperature air supply system；Drill body and annular convex platform are unscrewed, tapping rock and gently shake drill body make core bottom end and
Rock is detached from, and is taken out core and is packed.
Compared with the immediate prior art, technical solution provided by the invention has following excellent effect：
The present invention is realized the end face progressive cutting during soft rock boring and coring, is passed through using special-shaped diamond drill machine tooth
Special-shaped diamond drill machine tooth depth enters the part of drill body inside and outside wall, and inside and outside wall is cut during realizing soft rock boring and coring, soft rock
It is contacted with brill wall only at cutting, and greatly reduces core and bore the contact size of wall, to reduce in location of the coring procedure
Torque suffered by core.
Cryogenic gas is provided by low temperature air supply system, with ventilation shaft coupling and sealing shroud, realizes cooling gas
It flows into, coordinates the gap of the spacing and core and inside and outside wall between special-shaped diamond drill machine tooth, realize the recycle stream of cooling gas
Dynamic, to provide larger deslagging space during soft rock boring and coring, while the cooling gas circulated provides for deslagging
Power reduces the probability of bit freezing, improves soft rock coring success rate.
Description of the drawings
The accompanying drawings which form a part of this application are used to provide further understanding of the present invention, and of the invention shows
Meaning property embodiment and its explanation are not constituted improper limitations of the present invention for explaining the present invention.Wherein：
Fig. 1 is the dimensional structure diagram of the boring and coring drill bit of the embodiment of the present invention；
Fig. 2 is the front view of the boring and coring drill bit of the embodiment of the present invention；
Fig. 3 is in Fig. 2 along sectional view along A-A；
Fig. 4 is the right view of the boring and coring drill bit of the embodiment of the present invention；
Fig. 5 is the dimensional structure diagram of the ventilation shaft coupling of the embodiment of the present invention；
Fig. 6 is the front view of the ventilation shaft coupling of the embodiment of the present invention；
Fig. 7 is in Fig. 6 along sectional view along A-A；
Fig. 8 is the dimensional structure diagram of the sealing shroud of the embodiment of the present invention；
Fig. 9 is the front view of the sealing shroud of the embodiment of the present invention；
Figure 10 is in Fig. 9 along sectional view along A-A；
Figure 11 is the front view of the sealing ring of the embodiment of the present invention；
Figure 12 is the structural schematic diagram of the low temperature air supply system of the embodiment of the present invention；
Figure 13 is the operating diagram of the boring and coring device of the embodiment of the present invention.
In figure：1, boring and coring drill bit；11, drill body；12, tooth is bored；13, annular convex platform；131, bayonet；14, scale；2, lead to
Gas shaft coupling；21, thin shaft part；22, thick shaft part；23, the first seal groove；24, the first air admission hole；25, hollow lumen；3, sealing shroud；
31, the first cavity；32, the second cavity；33, the second air admission hole；34, the second seal groove；4, low temperature air supply system；41, air pump；
42, cryogenic gas holding vessel；43, the first valve；44, the second valve；45, flow rate monitors；46, temperature monitor；47, air inlet
Connector；5, sealing ring；6, external series gap；7, internal clearance；8, soft rock.
Specific implementation mode
The present invention will be described in detail below with reference to the accompanying drawings and embodiments.It should be noted that in the feelings not conflicted
Under condition, the feature in embodiment and embodiment in the present invention can be combined with each other.
In the description of the present invention, term " longitudinal direction ", " transverse direction ", "upper", "lower", "front", "rear", "left", "right", " perpendicular
Directly ", the orientation or positional relationship of the instructions such as "horizontal", "top", "bottom" is to be based on the orientation or positional relationship shown in the drawings, and is only
For ease of description the present invention rather than require the present invention must be with specific azimuth configuration and operation, therefore should not be understood as pair
The limitation of the present invention.The term " connected " that is used in the present invention, " connection " shall be understood in a broad sense, for example, it may be fixedly connected,
It may be a detachable connection；It can be directly connected, can also be indirectly connected by intermediate member, for the common of this field
For technical staff, the concrete meaning of above-mentioned term can be understood as the case may be.
As shown in figure 1 to figure 13, according to an embodiment of the invention, a kind of boring and coring for weak cementing soft rock is provided
Device, boring and coring device include：Boring and coring drill bit 1, ventilation shaft coupling 2, sealing shroud 3 and low temperature air supply system 4, shaft coupling of ventilating
2 one end is connected with boring and coring drill bit 1, and ventilation 2 other end of shaft coupling connects motor transmission shaft, and ventilation shaft coupling 2 is used for band
Dynamic boring and coring drill bit 1 rotates, and the middle part movable sleeve of ventilation shaft coupling 2 is equipped with sealing shroud 3, boring and coring drill bit 1, ventilation shaft coupling 2
It is coaxially disposed with sealing shroud 3.
Boring and coring drill bit 1 includes the drill body 11 of hollow structure and the brill tooth 12 in 11 one end of drill body, drill body 11 is arranged
For the annular element with certain wall thickness, multiple brill teeth 12 are circumferentially distributed along 11 end of drill body, and bore 12 arc-shaped bulk of tooth, boring
The inclined distribution in 11 end of body, convenient for increasing cutting force, the middle part for boring tooth 12 is fastened on the wall of 11 end of drill body, and bores tooth 12
Both ends extend outwardly along the wall of 11 end of drill body, formed in order to core and 11 madial wall of drill body of weak cementing soft rock 8 in
Gap 7 forms external series gap 6 between 11 lateral wall of weak cementing soft rock 8 and drill body, between internal clearance 7, two neighboring brill tooth 12 between
Gap and external series gap 6 form the channel of a ventilation and deslagging, to carry out when boring tooth 12 and working by the circulation of cryogenic gas
Cooling, tooth 12 is bored in protection makes core be also at lower temperature simultaneously；And the flowing of cryogenic gas also produces drilling operation
Raw landwaste discharge；
It is fluted to be arranged in 11 end sidewalls of drill body wherein to bore tooth 12 and 11 connection type of drill body, tooth is bored for placing
12, it is connected both to make, it is preferred that bore tooth 12 and be fixed by welding in 11 end sidewalls of drill body, certainly in other implementations
In example, it can also be that boring the middle part of tooth 12 is arranged groove, is stuck in by the groove on 11 wall of drill body, for boring tooth 12 and drill body 11
Connection can also be that boring tooth 12 and drill body 11 is integrally formed.
Ventilate 2 side wall of shaft coupling be equipped with the first air admission hole 24, the first air admission hole 24 be in communication with the outside and with ventilation shaft coupling 2
Internal hollow lumen 25 penetrates through, and is used for transmission cryogenic gas.
Along the first cavity 31 for being axially arranged with perforation of sealing shroud 3, the first cavity 31 is in cylindrical shape, and sealing shroud 3 is logical
Cross the middle part that the first cavity 31 is set in ventilation shaft coupling 2；3 side wall of sealing shroud is equipped with the second air admission hole 33, for being passed through low temperature
Gas；It is additionally provided with the second cavity 32 in sealing shroud 3, the second cavity 32 is also in cylindrical shape, and the second cavity 32 and the first chamber
Body 31 penetrates through, and the first air admission hole 24 is located in the second cavity 32, the second air admission hole 33 the second cavity 32 of connection, and cryogenic gas is from close
Second air admission hole 33 of big envelope 3 enters in the second cavity 32, is then entered in hollow by the first air admission hole 24 of shaft coupling 2 of ventilating
Chamber 25 is flowed to boring and coring drill bit 1.
Inlet suction port 47 in low temperature air supply system 4 is connected with the second air admission hole 33 conducting on sealing shroud 3, cryogenic gas
Into sealing shroud 3, then entered in drill body 11 by shaft coupling 2 of ventilating, cryogenic gas flows through internal clearance 7, two neighboring brill tooth 12
Between the venting channels that are formed of gap and external series gap 6, be finally discharged, to realize the cooling to boring tooth 12, and for landwaste
Deslagging provides power.
Cryogenic gas chooses nitrogen or liquid nitrogen in the embodiment of the present invention, and cost is relatively low, certainly low in other embodiments
Wet body can also be inert gas.
In a specific embodiment of the present invention, it is preferable that boring and coring drill bit 1 further includes annular convex platform 13, annular convex platform
The bottom end of 13 inner hollows, annular convex platform 13 is connect with the other end of drill body 11, top and the ventilation shaft coupling 2 of annular convex platform 13
One end flexible connection.
Preferably, bayonet 131 is additionally provided on the apical lateral face of annular convex platform 13, bayonet 131 is two be oppositely arranged
Plane is dismantled convenient for annular convex platform 13, and then is detached with drill body 11.
Preferably, drill body 11 is equipped with 14 line of scale, and depth is drilled through convenient for accurately controlling.
In a specific embodiment of the present invention, it is preferable that annular convex platform 13 is connected by Basolateral wall and 11 screw thread of drill body
It connects, annular convex platform 13 is threadedly coupled by the threaded hole on top with ventilation shaft coupling 2.
In a specific embodiment of the present invention, it is preferable that ventilation shaft coupling 2 is the ladder for including thin shaft part 21 and thick shaft part 22
Axis, 21 outside of thin shaft part are threadedly coupled with 13 top inner side wall of annular convex platform, and the thick shaft part 22 of ventilation shaft coupling 2 connects corning machine
Motor transmission shaft, corning machine drive the rotation of boring and coring device, completion to drill through work.
In a specific embodiment of the present invention, it is preferable that corning machine is indoor vertical corning machine, is the normal of art technology
With device, the motor drive axis connection ventilation shaft coupling 2 of corning machine, driving boring and coring device carries out the boring and coring of soft rock 8.
In a specific embodiment of the present invention, it is preferable that the hollow lumen 25 in ventilation shaft coupling 2 is positioned at thin shaft part 21
Open-ended, cryogenic gas flows into boring and coring drill bit 1 from hollow lumen 25.
In a specific embodiment of the present invention, it is preferable that low temperature air supply system 4 includes air pump 41, cryogenic gas holding vessel
42, the first valve 43, the second valve 44, flow rate monitors 45, temperature monitor 46 and inlet suction port 47；
One end of second valve 44 is connect with air pump 41, and the other end is connect with one end of temperature monitor 46, and second
The first valve 43 is additionally provided between valve 44 and air pump 41, one end of the first valve 43 is connected to the second valve 44 and air pump 41
Between pipeline on, the other end of the first valve 43 connection cryogenic gas holding vessel 42, for controlling cryogenic gas holding vessel 42
Keying and flow velocity；It is additionally provided in the second valve 44 and between temperature monitor 46 flow rate monitors 45, temperature monitor
46 and flow rate monitors 45 be used to show access into the temperature and flow velocity of cryogenic gas in boring and coring device；Temperature monitor 46
The other end connect inlet suction port 47.
In a specific embodiment of the present invention, it is preferable that flow rate monitors 45 are tachograph, and temperature monitor 46 is that electricity is aobvious
Thermometer.
In a specific embodiment of the present invention, it is preferable that the first valve 43 and the second valve 44 are ball valve.
In a specific embodiment of the present invention, it is preferred that it bores tooth 12 and arranges in the arc-shaped foliaceous in 11 end face of drill body, it is multiple
It bores tooth 12 to arrange in high outside and low outside shape in the end of drill body 11, bores the installation position of one end of tooth 12 less than the other end for boring tooth 12
Tooth 12 is bored towards the one end in 11 axle center of drill body less than the one end of brill tooth 12 far from 11 axle center of drill body, the brill of high outside and low outside shape design
Tooth 12 and horizontal angle are 5~10 ° of (such as 5 °, 6 °, 7 °, 7.5 °, 8 °, 8.5 °, 9 °, 10 °) sides when cutting soft rock 8
Face is capable of providing larger cutting force, convenient for the feeding of axial and end face, reduces the torque suffered by soft rock 8, is on the other hand also beneficial to
The discharge of landwaste.In a specific embodiment of the present invention, it is preferable that the thick shaft part 22 of ventilation shaft coupling 2 is equipped with the first seal groove
23,31 interior sidewall surface of the first cavity is equipped with the second seal groove 34, and sealing ring 5 is fastened on the first seal groove 23 and the second seal groove
In 34, the relative rotation of ventilation shaft coupling 2 and sealing shroud 3 is realized, in rotation process, sealed under motor powered in ventilation shaft coupling 2
5 remains stationaries are enclosed, the first air admission hole 24 is passed through convenient for cryogenic gas.
In a specific embodiment of the present invention, it is preferable that the first seal groove 23 and the second seal groove 34 there are two, two
Second seal groove 34 is separately positioned on the end face both sides of the second cavity 32, and the second seal groove 34 and the first seal groove 23 correspondence are set
It sets, the first seal groove 23 and the second seal groove 34 is realized into close connection respectively by two sealing rings 5 so that sealing shroud 3 exists
The sealing that good axial restraint and cryogenic gas are formed on ventilation shaft coupling 2, prevents sealing shroud 3 from axially slipping, while preventing low
Wet body from junction leak, cryogenic gas enter ventilation shaft coupling 2 the second cavity 32 after, from the first air admission hole 24 all into
Enter in boring and coring drill bit 1, certainly in other embodiments, the first seal groove 23 and the second seal groove 34 may be other numbers
Amount, such as the other quantities such as three, four, five, corresponding sealing ring 5 are also the other quantities such as three, four, five.
In a specific embodiment of the present invention, it is preferable that it is special-shaped diamond drill machine tooth 12, diamond abrasive hardness to bore tooth 12
Height realizes quick end face and axial feed cutting for providing larger cutting force.
For the structure of the clearer boring and coring device for understanding the present invention, specific embodiments of the present invention additionally provide
A kind of boring and coring method for weak cementing soft rock includes the following steps：
Step 1, the assembling of boring and coring device：
Sealing shroud 3 is inserted in ventilation shaft coupling 2 by the first cavity 31 first, the first seal groove is fastened on by sealing ring 5
23 and second on seal groove 34, and sealing shroud 3 is made to be tightly fastened with ventilation shaft coupling 2, while making the first air inlet on ventilation shaft coupling 2
Hole 24 is located in the second cavity 32 of sealing shroud 3, then by the motor drive axis connection of shaft coupling 2 and corning machine of ventilating, passes through weldering
It connects will ventilate shaft coupling 2 and motor transmission shaft of mode to connect, the mode that can also be connected through a screw thread in other embodiments
Secondly boring and coring drill bit 1 is twisted on ventilation shaft coupling 2, by boring and coring drill bit 1 and is led to by annular convex platform 13 by realization connection
Gas shaft coupling 2 is threadedly coupled, and then low temperature air supply system 4 is linked into the second air admission hole 33 of sealing shroud 3, finally processes needs
Weak cementing soft rock 8 is fixed on the processing platform of corning machine.
Step 2, the adjusting of low temperature air supply system：
It is first turned on air pump 41, then observes flow rate monitors 45, the second valve 44 is adjusted, gas velocity is made to reach suitable
Value；Temperature monitor 46 is observed again, adjusts the first valve 43, gas temperature is made to be in desired value；When adjusting temperature, control temperature
Spend monitor 46 temperature 0~5 DEG C (such as 0.3 DEG C, 0.5 DEG C, 0.8 DEG C, 1 DEG C, 1.5 DEG C, 2 DEG C, 2.5 DEG C, 3 DEG C, 3.5 DEG C,
4.5 DEG C), it is higher than the freezing temperature of soft rock 8；It is appropriate to adjust the second valve 44 when landwaste discharge is slower, improve gas flow rate.
Step 3, the boring and coring of weak cementing soft rock：
It is first turned on corning machine, boring and coring drill bit 1 is driven to carry out building up by welding and axial feed, then observation is arranged in real time
Slag situation need to adjust the second valve 44 when deslagging speed is slower, increase gas flow rate, when 1 temperature of boring and coring drill bit is higher
When, the first valve 43 is adjusted, gas temperature is reduced, generally with the increase of axially drilled depth, needs to increase gas velocity simultaneously
Gas temperature is reduced, still, rock freezes in order to prevent, and gas temperature is generally not less than the freezing temperature of rock；
In location of the coring procedure, cryogenic gas by the second air admission hole 33 enter the second cavity 32, then by the first air admission hole 24 into
Enter inside boring and coring drill bit 1, the spacing between boring tooth 12 is entered by core and 1 internal clearance 7 of boring and coring drill bit, finally by
Core is discharged with 1 external series gap 6 of boring and coring drill bit with landwaste, while realizing the cooling for boring tooth 12 and deslagging, location of the coring procedure
In, drill bit only contacts at brill tooth 12 with rock, greatly reduces the torque suffered by core in location of the coring procedure.
Step 4, the taking-up of core：
It is first a small amount of to promote boring and coring drill bit 1 when 1 end of boring and coring drill bit is close to 8 bottom of soft rock, turn off coring
Electromechanical machine is then shut off low temperature air supply system 4；Drill body 11 and annular convex platform 13 are unscrewed, touching rock and gently shaking drill body 11 makes
Core bottom end is detached from rock, is taken out core and is packed；
A small amount of purpose for promoting drill bit is to provide space for the disengaging of core, gets into behind bottom to shut down and tears brill open and can ensure
Boring and coring drill bit 1 only carries out cutting at one time to soft rock 8 in location of the coring procedure, to reduce the core caused by drilling process
It twists off；Since drill body 11 is dismountable with annular convex platform 13, taking-up can be dismantled when in drill bit when encountering core and breaking, is improved
Device applicability.
In a specific embodiment of the present invention, it is preferable that increase suspended and fixed device outside sealing shroud 3, by sealing shroud 3 with take
Core machine is preferably fixed.
It is designed in conclusion the present invention bores tooth 12 by special-shape diamond, in drilling operation so that in core and drill body 11
There are gap between wall and drill body 11 and 8 outer wall of soft rock, solve because of rock in strength reduction, drilling operation after the chance water of soft rock 8
Core is completely attached to 1 inner wall of boring and coring drill bit, and the space of deslagging is small, and core is by the torque being superimposed and due to soft rock 8
Argillization after chance water, leads to the sticky not easy-to-discharge slag of landwaste, further increases weak 8 coring of cementing soft rock caused by the torque of core
The extremely low technical problem of success rate.
As shown in figure 13, it is the 8 boring and coring device operating diagram of weak cementing soft rock of the present invention, special-shaped diamond drill machine tooth
12 are deep into 11 madial wall of drill body and protrude from 11 outer side surface of 11 interior sidewall surface of drill body and drill body, and boring and coring drill bit 1 exists
In drilling operation, bore 12 inside and outside wall of tooth cutting, soft rock 8 only at cutting with bore wall contact, and greatly reduce core and
The contact size for boring wall, to reduce the torque in location of the coring procedure suffered by core；Due to the anisotropic design for boring tooth 12 so that cut
There are internal clearances 7 between 11 inner wall of core after cutting and drill body, there are external series gap 6 between 11 outer wall of drill body and soft rock 8, formed compared with
Big deslagging space, and circulating by cryogenic gas, power is provided for deslagging；
When in use, low temperature air supply system 4 is adjusted by adjusting the first ball valve and the second ball valve first, reached
To suitable gas temperature and flow velocity, 33 close communication of inlet suction port 47 and the second air admission hole, cryogenic gas passes through the second air inlet
Hole 33 enters the second cavity 32 of sealing shroud 3, and the first air admission hole 24 is located in the second cavity 32 at this time, when work, cryogenic gas
The first air admission hole 24 for entering the ventilation shaft coupling 2 being rotating therewith, then enters drill body by the hollow lumen 25 for shaft coupling 2 of ventilating
11, enter the spacing gap between boring tooth 12 from the internal clearance 7 of core and boring and coring drill bit 1, finally by 11 outer wall of drill body
External series gap 6 between soft rock 8 is discharged with landwaste, and the power of offer is circulated by cryogenic gas, while realizing brill
The cooling of tooth 12 and deslagging.
The foregoing is merely the preferred embodiment of the present invention, are not intended to restrict the invention, for those skilled in the art
For member, the invention may be variously modified and varied.Any modification made by all within the spirits and principles of the present invention,
Equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of boring and coring device for weak cementing soft rock, which is characterized in that the boring and coring device includes：Drilling takes
One end of core drill bit, ventilation shaft coupling, sealing shroud and low temperature air supply system, the ventilation shaft coupling is connected with boring and coring brill
The middle part movable sleeve of head, the ventilation shaft coupling is equipped with sealing shroud, and the boring and coring drill bit, ventilation shaft coupling and sealing shroud are coaxially set
It sets；
The boring and coring drill bit includes the drill body of hollow structure and the brill tooth in drill body one end, multiple brill tooth edges is arranged
The end of the drill body is circumferentially distributed；It is fastened on the wall of the drill body end in the middle part of the brill tooth, and the two of the brill tooth
End along the drill body end wall is inside, outer extension, formed in order to core and the drill body madial wall of weak cementing soft rock
Internal clearance forms external series gap, between the internal clearance, the two neighboring brill tooth between weak cementing soft rock and drill body lateral wall
Gap and the external series gap form the channel of a ventilation and deslagging；
The ventilation shaft coupling side wall be equipped with the first air admission hole, the first air admission hole be in communication with the outside and with ventilation shaft coupling inside
Hollow lumen penetrates through, and is used for transmission cryogenic gas；
Along the first cavity for being axially arranged with perforation of the sealing shroud, the sealing shroud is set in the ventilation by the first cavity
The middle part of shaft coupling；The sealing shroud side wall is equipped with the second air admission hole, for being passed through cryogenic gas；It is additionally provided in the sealing shroud
Second cavity, first air admission hole are located in second cavity, and second air admission hole is connected to second cavity, is convenient for
It is flowed into the ventilation shaft coupling into the cryogenic gas in the sealing shroud；
Inlet suction port in the low temperature air supply system is connected connection with the second air admission hole on the sealing shroud, cryogenic gas into
Enter the sealing shroud, then entered in the drill body by the ventilation shaft coupling, and then cool down to the brill tooth, and is rock
The deslagging of bits provides power.
2. being used for the boring and coring device of weak cementing soft rock as described in claim 1, which is characterized in that the boring and coring bores
Head further includes annular convex platform, the annular convex platform inner hollow, the other end of the bottom end of the annular convex platform and the drill body
Connection, the top of the annular convex platform are flexibly connected with one end of the ventilation shaft coupling；
Preferably, the drill body is equipped with graduation mark, and depth is drilled through for accurately controlling.
3. being used for the boring and coring device of weak cementing soft rock as claimed in claim 2, which is characterized in that the annular convex platform is logical
It crosses Basolateral wall to be threadedly coupled with the drill body, threaded hole and the ventilation shaft coupling screw thread of the annular convex platform by top
Connection；
Preferably, bayonet is additionally provided on the apical lateral face of the annular convex platform, the bayonet is two planes being oppositely arranged,
It is dismantled convenient for the annular convex platform.
4. being used for the boring and coring device of weak cementing soft rock as claimed in claim 2, which is characterized in that the ventilation shaft coupling is another
One end connects motor transmission shaft, and the ventilation shaft coupling is for driving the drill body to rotate.
5. being used for the boring and coring device of weak cementing soft rock as claimed in claim 4, which is characterized in that the ventilation shaft coupling is
Multi-diameter shaft including thin shaft part and thick shaft part, the thin shaft part outside are threadedly coupled with the annular convex platform top inner side wall, institute
State the thick shaft part connection motor transmission shaft of ventilation shaft coupling.
6. being used for the boring and coring device of weak cementing soft rock as described in claim 1, which is characterized in that low temperature gas supply system
System includes air pump, cryogenic gas holding vessel, the first valve, the second valve, flow rate monitors, temperature monitor and inlet suction port；
One end of second valve is connect with the air pump, and the other end is connect with one end of the temperature monitor, and in institute
It states and is additionally provided with the first valve between the second valve and the air pump, one end of first valve is connected to second valve
On pipeline between the air pump, the other end of first valve connects the cryogenic gas holding vessel, for controlling
State keying and the flow velocity of cryogenic gas holding vessel；It is additionally provided in second valve and between temperature monitor flow velocity monitoring
Device, the temperature monitor and the flow rate monitors be used to show access into cryogenic gas in boring and coring device temperature and
Flow velocity；The other end of the temperature monitor connects inlet suction port.
7. being used for the boring and coring device of weak cementing soft rock as described in claim 1, which is characterized in that multiple brill teeth exist
The end of the drill body is arranged in high outside and low outside shape, and the installation position of described one end for boring tooth is less than the other end for boring tooth
Described one end for boring tooth towards the drill body axle center is less than the described brill one end of tooth far from the drill body axle center；
Preferably, the brill tooth is convenient for deslagging in the arc-shaped foliaceous arrangement in the drill body end face.
8. being used for the boring and coring device of weak cementing soft rock as claimed in claim 5, which is characterized in that the ventilation shaft coupling
Thick shaft part is equipped with the first seal groove, and the sealing shroud interior sidewall surface is equipped with the second seal groove, and sealing ring is fastened on described the
In one seal groove and second seal groove, realizes axial restraint of the sealing shroud on the ventilation shaft coupling, realize simultaneously
The sealing of cryogenic gas.
9. being used for the boring and coring device of weak cementing soft rock as claimed in claim 8, which is characterized in that first seal groove
With the second seal groove it is equal there are two, two second seal grooves are arranged in the end face both sides of second cavity, described second
Seal groove and first seal groove are correspondingly arranged.
10. a kind of boring and coring method being used for weak cementing soft rock such as claim 1-9 any one of them, which is characterized in that
The boring and coring method includes the following steps：
Step 1, the assembling of boring and coring device：
Sealing shroud is inserted in ventilation shaft coupling by the first cavity first, then connects the motor transmission shaft of ventilate shaft coupling and corning machine
Connect, secondly by boring and coring drill bit twist in ventilation shaft coupling on, by low temperature supply system access to sealing shroud the second air admission hole, most
The weak cementing soft rock processed will be needed to be fixed on the processing platform of corning machine afterwards；
Step 2, the adjusting of low temperature air supply system：
It is first turned on air pump, then observes flow rate monitors, the second valve is adjusted, gas velocity is made to reach desired value；It observes again
Temperature monitor adjusts the first valve, gas temperature is made to be in desired value；
Step 3, the boring and coring of weak cementing soft rock：
It is first turned on corning machine, boring and coring drill bit is driven to carry out building up by welding and axial feed, then observes deslagging feelings in real time
Condition, the first valve of constantly regulate and the second valve are to control temperature and flow velocity；
In location of the coring procedure, cryogenic gas enters the second cavity by the second air admission hole, and entering boring and coring by the first air admission hole bores
Head is internal, then enters the spacing between boring tooth by core and boring and coring drill bit internal clearance, finally by core and boring and coring
Drill bit external series gap is discharged with landwaste, realizes the cooling for boring tooth and deslagging；
Step 4, the taking-up of core：
It is first a small amount of to promote boring and coring drill bit when boring and coring drill bit end is close to soft rock bottom, corning machine motor is turned off,
It is then shut off low temperature air supply system；Drill body and annular convex platform are unscrewed, touching rock and gently shaking drill body makes core bottom end and rock
It is detached from, takes out core and pack.
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| CN201810623911.8A CN108547588B (en) | 2018-06-15 | 2018-06-15 | Drilling coring device and method for weakly cemented soft rock |
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|---|---|---|---|
| CN201810623911.8A CN108547588B (en) | 2018-06-15 | 2018-06-15 | Drilling coring device and method for weakly cemented soft rock |
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| CN111037372A (en) * | 2019-12-18 | 2020-04-21 | 张海 | Preparation method of integrally-formed quartz sandstone pot |
| RU2719889C1 (en) * | 2019-07-09 | 2020-04-23 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Мурманский государственный технический университет" (ФГБОУ ВО "МГТУ") | Drilling method in water area |
| CN112198034A (en) * | 2020-11-26 | 2021-01-08 | 辽宁工程技术大学 | Weak cementation soft rock hollow cylinder sample preparation device and preparation method |
| CN113650167A (en) * | 2021-08-27 | 2021-11-16 | 南通钜盛数控机床有限公司 | Turning and drilling combined machine tool for graphite processing |
| CN114705834A (en) * | 2022-03-31 | 2022-07-05 | 安徽理工大学 | Indoor test system for simulating gas lift reverse circulation slurry suspension slag discharge and test method thereof |
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| RU2719889C1 (en) * | 2019-07-09 | 2020-04-23 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Мурманский государственный технический университет" (ФГБОУ ВО "МГТУ") | Drilling method in water area |
| CN111037372A (en) * | 2019-12-18 | 2020-04-21 | 张海 | Preparation method of integrally-formed quartz sandstone pot |
| CN112198034A (en) * | 2020-11-26 | 2021-01-08 | 辽宁工程技术大学 | Weak cementation soft rock hollow cylinder sample preparation device and preparation method |
| CN113650167A (en) * | 2021-08-27 | 2021-11-16 | 南通钜盛数控机床有限公司 | Turning and drilling combined machine tool for graphite processing |
| CN114705834A (en) * | 2022-03-31 | 2022-07-05 | 安徽理工大学 | Indoor test system for simulating gas lift reverse circulation slurry suspension slag discharge and test method thereof |
| CN114705834B (en) * | 2022-03-31 | 2023-08-18 | 安徽理工大学 | Simulated gas lift reverse circulation slurry suspension deslagging indoor test system and test method thereof |
| CN116084871A (en) * | 2023-04-07 | 2023-05-09 | 安徽建筑大学 | Geological exploration drilling equipment |
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