CN102418520B - Water-locking type unconsolidated formation sampling drilling tool - Google Patents
Water-locking type unconsolidated formation sampling drilling tool Download PDFInfo
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- CN102418520B CN102418520B CN201110455820.6A CN201110455820A CN102418520B CN 102418520 B CN102418520 B CN 102418520B CN 201110455820 A CN201110455820 A CN 201110455820A CN 102418520 B CN102418520 B CN 102418520B
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- drilling tool
- corer
- scall
- sampling
- storehouse seat
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- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The invention discloses a water-locking type unconsolidated formation sampling drilling tool. The drilling tool comprises a drill bit, an external cylinder, a coring tube, a piston, a bin base and a plugging switch, wherein the drill bit is connected to the lower end of the external cylinder; the coring tube is arranged in the external cylinder; the piston is arranged in the coring tube; the upper part of the coring tube is connected with the bin base which is connected with the coring tube in a sealed mode; a through hole which is connected with the coring tube is formed in the bottom surface of the bin base; the plugging switch is arranged in the through hole; and a water hole is formed in the wall of the bin base. The water-locking type unconsolidated formation sampling drilling tool has a simple structure, can efficiently sample unconsolidated and broken formations such as sandy soil layers, soil layers, gravel-containing layers and the like in a high-quality way, has a high sampling rate, particularly can preserve the sequence state of the formations well, and is suitable for environmental sampling, geotechnical investigation and surveying sampling and the like of the unconsolidated and broken formations and the like, and the obtained samples are undisturbed and are high in fidelity.
Description
Technical field
The present invention relates to Sampling driller field, particularly a kind of Sampling driller that adapts to scall.
Background technology
In the prior art, when being sampled, soil often adopts the pipe that narrows, multilayer pipe, the Sampling drillers such as piston drilling tool, if the patent No. is " CN201120048021.2 ", patent name provides a kind of Sampling driller for " horizontal orientation cohesionless soil Sampling driller ", comprise the outer tube of rotating under external force driving, and as the inner layer pipe of soil sample package tube, also comprise the fixedly jump ring of soil sample, described jump ring one end is connected with inner layer pipe front end, another free end is provided with some lamellar tooths, when described lamellar tooth moves forward encapsulation soil sample with jump ring outer tube relative to inner layer pipe, under the interior step ramp effect of outer tube, to axle center, locate to shrink and fix gathered soil sample.This Sampling driller no doubt can play the original form that keeps institute's sample thief when carrying out level sampling, yet, when vertically sampling in scall, because sample is conducted oneself with dignity and worries rocking of process, jump ring is often difficult to catch sample in core barrel, cause and lose heart phenomenon, make the quality requirement that sampling rate is low, be difficult to reach drill sampling, lost important formation information.
Summary of the invention
For the deficiencies in the prior art, the object of the present invention is to provide the efficient Sampling driller that can adapt to scall in, can realize sandy soils, soil layer, containing efficient, high-quality loose, broken formation such as layer of gravel, sample, and the sample fidelity of obtaining is good, particularly can make stratigraphic sequence state preserve good.
Technical scheme of the present invention is achieved in that
Lock water type scall Sampling driller, comprise drill bit, outer cylinder body and corer, described drill bit is connected to the lower end of described outer cylinder body, described corer is arranged on the inside of described outer cylinder body, also comprise piston, storehouse seat and shutoff switch, described piston is arranged on the inside of described corer, the top of corer is connected with a storehouse seat, described storehouse seat and described corer are tightly connected, seat bottom surface, described storehouse has the through hole being connected with described corer, described through hole is provided with shutoff switch, on the wall of described storehouse seat, has water hole.
Above-mentioned lock water type scall Sampling driller, described shutoff switch is plugging valve, described plugging valve has valve gap, connecting portion and closure part, described valve gap is supported on the bottom surface of described storehouse seat by Compress Spring, described connecting portion connects described valve gap and described closure part through the through hole of seat bottom surface, described storehouse, the diameter of described connecting portion is less than the internal diameter of through hole on the seat of described storehouse, and described closure part is conical, and the lower end, bottom surface of described storehouse seat has and corresponding face territory, described closure part.
Above-mentioned lock water type scall Sampling driller, also comprises the top connection of tubulose drilling tool, and described drilling tool top connection is arranged on the top of described storehouse seat.
Above-mentioned lock water type scall Sampling driller, also comprise retainer ring, locating piece and spring base in tube drilling rod joint and tube drilling rod joint endoporus, described tube drilling rod joint inserts in described drilling tool top connection and is sealed and matched with described drilling tool top connection, described spring base and described locating piece coordinate with described tube drilling rod play movement, between described spring base and described locating piece, are provided with Compress Spring.
Above-mentioned lock water type scall Sampling driller, described locating piece is divided into upper and lower two parts, described upper and lower two parts are cylindrical, the diameter of described upper part is less than the diameter of described lower part, the transition face of described upper part and described lower part is taper seat, on the wall of the tube drilling rod joint of relatively described transition face lower limb, have a plurality of suppending holes, on the position of the relatively described suppending hole of described drilling tool top connection inwall, have annular suspension groove, in the space of described suppending hole and the formation of described suspension groove, suspension steel ball is set.
Above-mentioned lock water type scall Sampling driller, described retainer ring is fixed by screws on the described tube drilling rod joint of described locating piece top, the internal diameter of described retainer ring is greater than the diameter of part on described locating piece, on the outer wall of described tube drilling rod joint, be provided with shoulder, the spacing of described shoulder and described drilling tool top connection is less than described locating piece upper height.
Above-mentioned lock water type scall Sampling driller, described spring base bottom surface is pyramidal structure and is positioned at described storehouse seat, the bottom surface of described spring base does not contact with described valve gap, distance≤1mm.
Above-mentioned lock water type scall Sampling driller, the skin of described suspension steel ball is coated with layer of brass.
Above-mentioned lock water type scall Sampling driller, described drill bit and described outer cylinder body are threaded connection, described drill bit with described outer cylinder body junction below there is inward flange.
Above-mentioned lock water type scall Sampling driller, is provided with sealing ring between described corer and described drilling tool top connection, between described piston and described corer, is also provided with sealing ring.
The invention has the beneficial effects as follows: simple in structure, can realize efficient, high-quality sampling to sandy soils, soil layer,, broken formation loose containing layer of gravel etc., and sample undisturbed, the fidelity obtained are good, the high sample of sampling rate, particularly can make stratigraphic sequence state preserve good, the environmental sampling, the work that are applicable to the stratum such as loose, broken are surveyed sampling etc.
Accompanying drawing explanation
Fig. 1 is that the present invention locks the main TV structure schematic diagram of water type scall Sampling driller
In figure: 1-shoulder, 2-tube drilling rod joint, 3-retainer ring, 4-locating piece, the top connection of 5-drilling tool, 6-storehouse seat, 7-corer, 8-drill bit, 9-spring base, 10-valve gap, 11-connecting portion, 12-outer cylinder body, 13-piston, 14-closure part, 15-hangs steel ball, 16-disconnecting apparatus.
The specific embodiment
The present invention is described further by reference to the accompanying drawings:
As shown in Figure 1, the present invention locks water type scall Sampling driller, comprise drill bit 8, outer cylinder body 12 and corer 7, the outer cylinder body 12 belows drill bit 8 that has been threaded, the external diameter of drill bit 8 is greater than the external diameter of outer cylinder body 12, can guarantee like this has certain space between water hole on storehouse seat 6 and surrounding soil, described corer 7 is arranged on the inside of described outer cylinder body 12, also comprise piston 13, storehouse seat 6 and shutoff switch, described piston 13 is cylindrical shape packed-piston, arranged outside at described cylindrical shape packed-piston is fluted, in groove, be provided with sealing ring, described drill bit 8 is threaded with described outer cylinder body 12, described drill bit 8 with described outer cylinder body 12 junctions below there is inward flange, to prevent from coring, pipe skids off from outer cylinder body 12, described packed-piston 13 external diameters are more bigger than drill bit 8 internal diameters, to prevent that packed-piston 13 from skidding off from corer 7, described piston 13 is arranged on the inside of described corer 7, described piston 13 can slide at the internal freedom of corer 7, the top of corer 7 is connected with a storehouse seat 6, seat 6 belows, described storehouse are cylindrical, size matches with corer 7 internal diameter sizes, storehouse seat 6 and corer 7 are interference fit, seat 6 tops, described storehouse are threaded, be threaded connection with drilling tool top connection 5, storehouse seat 6 is hollow structure, seat 6 bottom surfaces, described storehouse have the through hole being connected with described corer 7, described through hole is provided with shutoff switch, described shutoff switch is a plugging valve, described plugging valve has valve gap 10, connecting portion 11, closure part 14, on connecting portion 11, cover has a Compress Spring, Compress Spring lower end is fixed on the bottom surface of storehouse seat 6, so described closure part 14 can be by the through hole sealing of storehouse seat 6 bottom surfaces, described valve gap 10 is supported on the bottom surface of described storehouse seat 6 by Compress Spring, the through hole that passes seat 6 bottom surfaces, described storehouse due to connecting portion described in Compress Spring 11 connects described valve gap 10 and described closure part 14, the diameter of described connecting portion 11 is less than the diameter of through hole on the seat 6 of described storehouse, described closure part 14 is conical, the bottom surface of described storehouse seat 6 has and 14 corresponding face territories, described closure part, conical structure there is good sealing and return in effect, so do not need described plugging valve to carry out spacing.On the wall of described storehouse seat 6, have water hole, prepare before lower drilling tool, on earth's surface by the water hole on storehouse seat 6 to water filling in the seat of storehouse, plugging valve is owing to opened by the effect of the pressure of water, make the water in the seat of storehouse can enter into corer 7, fill after water corer 7 inside, by closure part 14, corer 7 is sealed, owing to being subject to the Action of Gravity Field of water, packed-piston 13 initial places corer 7 below.
The present invention locks water type scall Sampling driller and also comprises tube drilling rod joint 2, retainer ring 3, locating piece 4 and spring base 9, described tube drilling rod joint 2 and described drilling tool top connection 5 matched in clearance, in drilling tool top connection 5, have groove, in groove, be provided with sealing ring, the effect that sealing ring is set is the sealing effectiveness increasing between tube drilling rod joint 2 and drilling tool top connection 5, make can not can effectively make rapidly piston reset from gap pressure release between tube drilling rod joint 2 and drilling tool top connection 5 when high pressure water injection, described spring base 9 is threaded with described tube drilling rod joint 2, described locating piece 4 and described tube drilling rod joint 2 matched in clearance, between described spring base 9 and described locating piece 4, be provided with Compress Spring, described locating piece 4 is divided into upper and lower two parts, described upper and lower two parts are cylindrical, the diameter of described upper part is less than the diameter of described lower part, the transition face of described upper part and described lower part is taper seat, this structure of locating piece 4 is to block for the steel ball 15 that can be draped, on the tube drilling rod joint of relatively described transition face lower limb, have a plurality of suppending holes, on the position of the relatively described suppending hole of described drilling tool top connection 5 inwalls, have belt suspension groove, in the space of described suppending hole and the formation of described suspension groove, arrange and hang steel ball 15, the skin that hangs steel ball 15 is coated with layer of brass, can slow down fully like this and hang the cycle that steel ball 15 is changed it due to the loss of friction and collision, described retainer ring 3 is fixed by screws on the tube drilling rod joint 2 of described locating piece 4 tops, the internal diameter of described retainer ring 3 is less than the diameter of part on described locating piece 4, to guarantee that locating piece 4 can be limited to the below of retainer ring 3, on the outer wall of described tube drilling rod joint 2, be provided with shoulder 1, the spacing of described shoulder 1 and described drilling tool top connection 5 is less than the diameter in the hole having on described tube drilling rod joint 2, the object that shoulder 1 is set is just to limit the displacement of tubulose tool joint 2, make it can not unconfined movement, described spring base 9 bottom surfaces are conical structure, the bottom surface of described spring base 9 does not contact with described valve gap 10, the benefit that spring base 9 bottom surfaces are conical structure is to reduce the resistance of storehouse seat 6 interior water while falling, it is accurate to make when descending with tube drilling rod joint 2, open in time plugging valve.
When drilling tool is transferred to desired depth, drop into shaft-like disconnecting apparatus 16, locating piece 4 is under the impact of disconnecting apparatus 16, and spring is compressed, and locating piece 4 is descending, makes to hang steel ball 15 and throws off, the descending drive cone valve 11 of tube drilling rod joint 2 is descending, locating piece and the steel ball 15 that is draped block, cannot reset, kinetic energy while requiring disconnecting apparatus 16 to decline is greater than the potential energy of spring, transfer the drill string on tube drilling rod joint 2 tops, locating piece 4, tube drilling rod joint 2, and whole drilling rod integral body is descending, the shoulder 1 of tube drilling rod joint 2 is contacted with drilling tool top connection 5 upper end, and motion puts in place, spring base 9, valve gap 10 is the descending closure part 14 of pushing open together, start drive sampling, piston 13 is up under the promotion of sample, water in corer 7 can freely be flowed out from the water hole of high-pressure chamber seat 6 walls, when drill bit 8 creeps into down, the sample of getting is entered in corer 7 by the torus space of drill bit 8, simultaneously, promoting packed-piston 13 moves upward, continue to creep into the water in corer 7 and all discharge, or when drive sampling requires to appointment, on carry drilling tool, tube drilling rod joint 2 is up, spring base 9 departs from valve gap 8, closure part 14 is closed under the effect of the restoring force of spring, simultaneously, sample is slightly descending under the effect of gravity, form top negative pressure, avoid sample to come off from bottom, carry and boring until drilling tool is mentioned to ground surface, turn on drill bit 8, corer 7 integral body are pulled out, sample can completely take out.
The present invention is simple in structure, can realize efficient, high-quality sampling to sandy soils, soil layer,, broken formation loose containing layer of gravel etc., and sample undisturbed, the fidelity obtained are good, the high sample of sampling rate, particularly can make stratigraphic sequence state preserve good, the environmental sampling, the work that are applicable to the stratum such as loose, broken are surveyed sampling etc.
Claims (9)
1. lock water type scall Sampling driller, comprise drill bit (8), outer cylinder body (12) and corer (7), described drill bit (8) is connected to the lower end of described outer cylinder body (12), described corer (7) is arranged on the inside of described outer cylinder body (12), it is characterized in that, also comprise piston (13), storehouse seat (6) and shutoff switch, described piston (13) is arranged on the inside of described corer (7), the top of corer (7) is connected with a storehouse seat (6), described storehouse seat (6) is tightly connected with described corer (7), described storehouse seat (6) bottom surface has the through hole being connected with described corer (7), described through hole is provided with shutoff switch, on the wall of described storehouse seat (6), have water hole, described shutoff switch is plugging valve, described plugging valve is arranged on the bottom surface of described storehouse seat (6) by Compress Spring, described plugging valve has valve gap (10), connecting portion (11) and closure part (14), described valve gap (10) is supported on the bottom surface of described storehouse seat (6) by Compress Spring, described connecting portion (11) connects described valve gap (10) and described closure part (14) through the through hole of described storehouse seat (6) bottom surface, the diameter of described connecting portion (11) is less than the internal diameter of the upper through hole of described storehouse seat (6), described closure part (14) is conical, the bottom surface of described storehouse seat (6) has and described closure part (14) corresponding face territory.
2. lock water type scall Sampling driller according to claim 1, is characterized in that, also comprise tubulose drilling tool top connection (5), described drilling tool top connection (5) is arranged on the top of described storehouse seat (6).
3. lock water type scall Sampling driller according to claim 2, it is characterized in that, also comprise retainer ring (3), locating piece (4) and spring base (9) in tube drilling rod joint (2) and tube drilling rod joint (2) endoporus, described tube drilling rod joint (2) inserts in described drilling tool top connection (5) and is sealed and matched with described drilling tool top connection (5), described spring base (9) and described locating piece (4) and described tube drilling rod joint (2) matched in clearance, be provided with Compress Spring between described spring base (9) and described locating piece (4).
4. lock water type scall Sampling driller according to claim 3, it is characterized in that, described locating piece (4) is divided into upper and lower two parts, described upper and lower two parts are cylindrical, the diameter of described upper part is less than the diameter of described lower part, the transition face of described upper part and described lower part is taper seat, on the wall of the tube drilling rod joint (2) of relatively described transition face lower limb, have a plurality of suppending holes, on the position of the relatively described suppending hole of described drilling tool top connection (5) inwall, have annular suspension groove, in the space of described suppending hole and the formation of described suspension groove, arrange and hang steel ball (15).
5. lock water type scall Sampling driller according to claim 3, it is characterized in that, described retainer ring (3) is fixed by screws on the described tube drilling rod joint (2) of described locating piece (4) top, the internal diameter of described retainer ring (3) is greater than the diameter of the upper part of described locating piece (4), on the outer wall of described tube drilling rod joint (2), be provided with shoulder (1), described shoulder (1) is less than described locating piece (4) upper height with the spacing of described drilling tool top connection (5).
6. lock water type scall Sampling driller according to claim 3, is characterized in that, described spring base (9) bottom surface is pyramidal structure and is positioned at described storehouse seat (6), and the bottom surface of described spring base does not contact with described valve gap (10).
7. lock water type scall Sampling driller according to claim 4, is characterized in that, the skin of described suspension steel ball (15) is coated with layer of brass.
8. lock water type scall Sampling driller according to claim 6, it is characterized in that, described drill bit (8) is threaded connection with described outer cylinder body (12), and described drill bit (8) has inward flange with the below of described outer cylinder body (12) junction.
9. lock water type scall Sampling driller according to claim 2, it is characterized in that, between described corer (7) and described drilling tool top connection (5), be provided with sealing ring, between described piston (13) and described corer (7), be also provided with sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110455820.6A CN102418520B (en) | 2011-12-31 | 2011-12-31 | Water-locking type unconsolidated formation sampling drilling tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110455820.6A CN102418520B (en) | 2011-12-31 | 2011-12-31 | Water-locking type unconsolidated formation sampling drilling tool |
Publications (2)
| Publication Number | Publication Date |
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| CN102418520A CN102418520A (en) | 2012-04-18 |
| CN102418520B true CN102418520B (en) | 2014-04-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110455820.6A Expired - Fee Related CN102418520B (en) | 2011-12-31 | 2011-12-31 | Water-locking type unconsolidated formation sampling drilling tool |
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| CN109869107A (en) * | 2019-04-10 | 2019-06-11 | 中国科学院武汉岩土力学研究所 | Pressure drill bit device and drill through device |
| CN112378703B (en) * | 2020-11-27 | 2022-11-25 | 安庆市磐石岩土有限公司 | Geodetic survey is with geotome |
| CN114562225B (en) * | 2022-02-28 | 2024-03-08 | 中国铁建重工集团股份有限公司 | Direction-adjustable core drill with simple sealing device |
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| EP0182498A1 (en) * | 1984-10-17 | 1986-05-28 | Diamond Oil Well Drilling Co. | Method and apparatus for preventing contamination of a coring sponge |
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