WO2015026146A1 - Trépan destiné à évacuer directement la vase excavée au-dessus du sol et procédé d'utilisation de celui-ci - Google Patents

Trépan destiné à évacuer directement la vase excavée au-dessus du sol et procédé d'utilisation de celui-ci Download PDF

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Publication number
WO2015026146A1
WO2015026146A1 PCT/KR2014/007709 KR2014007709W WO2015026146A1 WO 2015026146 A1 WO2015026146 A1 WO 2015026146A1 KR 2014007709 W KR2014007709 W KR 2014007709W WO 2015026146 A1 WO2015026146 A1 WO 2015026146A1
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WO
WIPO (PCT)
Prior art keywords
drill bit
fluid
slime
upward
ground
Prior art date
Application number
PCT/KR2014/007709
Other languages
English (en)
Korean (ko)
Inventor
임성대
Original Assignee
(주)삼일이엔씨
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from KR20130112133A external-priority patent/KR20150021873A/ko
Application filed by (주)삼일이엔씨 filed Critical (주)삼일이엔씨
Publication of WO2015026146A1 publication Critical patent/WO2015026146A1/fr

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    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/60—Drill bits characterised by conduits or nozzles for drilling fluids
    • 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
    • E21B10/44—Bits with helical conveying portion, e.g. screw type bits; Augers with leading portion or with detachable parts

Definitions

  • the present invention relates to a drill bit for ground excavation, and to handle the slime generated during the drilling work in the construction foundation work piles or slopes anchors, horizontal drilling for small tunnels, ground drilling work for groundwater or geothermal and resource development
  • the present invention relates to a drill bit for allowing clean discharge of slime in a drilling hole by using a fluid provided from the ground.
  • the slime discharge fluid provided to the drill bit through the upper drill rod flows strongly downward through the drill bit core to the bottom of the drill bit, and then drills the drill bit. Is returned from the bottom of the drilled hole is located, and then goes up to the ground through the drill bit outside and is discharged to the outside. Due to this strong fluid flow, the slime generated during the excavation work is also discharged to the ground by the vertical fluid discharge path formed on the outside of the drill bit or the ascending fluid through the screw.
  • This general drill bit is useful for slime removal on the bottom of the drilled hole, but is disadvantageous for slime removal on the drill bit side or drill rod section.
  • the slime of the drill rod falls due to the weakened upward fluid pressure during the recovery of the drill bit.
  • the pile or the structure enters the drilling hole due to the residual slime accumulated on the bottom of the drilling hole, long-term settlement occurs after completion of the construction of the structure. As a result, there was a problem of harming the safety of the structure.
  • the object of the present invention is to direct the drill bit section and the drill rod section with strong and concentrated fluid pressure without loss by directing part or all of the slime discharge fluid to the ground direction directly from the drill bit without spraying the bottom surface of the drilling hole.
  • Most of the slime is to provide a drill bit for direct discharge to the ground and its use.
  • Another object of the present invention is that after the drilling operation is completed, the upward injection exit also goes up during the recovery of the drill bit to the ground, so that the remaining slime remaining on the bottom surface of the drilling hole is prevented by falling of the floating slime in the drilling hole with a strong fluid pressure without loss.
  • the present invention according to the above object, in the ground drilling drill bit configured to discharge the excavation slime to the outside of the drilling hole by using the fluid supplied from the outside, the flow of the slime discharge fluid supplied downward to the drill bit (2) It is a drill bit for directly discharging the excavation slime to the ground characterized in that the upward injection passage 14 to change the direction to be sprayed.
  • the ground drilling drill bit configured to discharge the excavation slime to the outside of the drilling hole by using the fluid supplied from the outside
  • the fluid supply passage (6) is opened and closed by the slider 24 installed in the drill bit (2a) to operate by lifting the fitting type
  • the fluid is upward
  • Upward injection passages (14a) and (14b) are formed to change the flow direction upward to be sprayed, and the upward injection passages (14a) and (14b) transmit the rotational force provided from the perforator on the ground to the drill bits (2b) and (2c).
  • the present invention in the method of using the ground drilling drill bit configured to discharge the excavation slime to the outside of the drilling hole by using the fluid supplied from the outside, the slime discharge fluid supplied downward to the drill bit (2) fluid supply It is characterized in that the excavation slime of the drill bit 2 and the drill rod section is removed by directly spraying by changing the flow direction upward through the upward injection passage 14 by the opening and closing control of the passage 6.
  • the present invention in the method of using the ground drilling drill bit configured to discharge the excavation slime to the outside of the drilling hole by using the fluid supplied from the outside, the fluid supply passage 6 by the lifting operation of the drive sub 42
  • the flow of fluid is directly injected upward through the upward injection passage 14a to control the opening and closing of the drill bit 2b and the excavation slicing of the drill rod section, but the upward injection by the lifting operation of the drive sub-42
  • the passage 14a is opened and closed and the drive sub 42 is lifted up to a predetermined height during the drilling operation, all of the supplied fluid is sprayed downward through the discharge port 18 to remove the residual slime at the bottom of the drilling hole.
  • the slider 24 descends to block the flow of the fluid to the discharge port 18 so that the fluid flows upward through the upward injection passage 14a.
  • the injection is characterized in that the floating slime of the drill bit (2b) outside and the drill rod section is discharged to the ground.
  • the present invention in the method of using the ground drilling drill bit configured to discharge the excavation slime to the outside of the drilling hole by using the fluid supplied from the outside, the fluid supply passage 6 by the lifting operation of the drive sub 42
  • the drill flow (14a, 14b) By controlling the opening and closing of the drill flow (14a, 14b) through the flow of the fluid to be injected directly upwards to remove the drill bit (2b) (2c) and the drilling slit of the drill rod section, but the drill bit (2b) ( 2c) the up and down injection path 14a, 14b is opened and closed by the continuous lowering by excavation and the separation distance generated by the stepping down of the drive sub 42 by the operation of the operator, the drill bit (2b) If the separation distance between 2c and the drive sub 42 is less than or equal to the set value, the supplied fluid is sprayed downward through the discharge port 18 to remove the bottom slime of the drilling hole, and if it is greater than or equal to the set value, the upward spray passage 14a and 14b. As the fluid opens up) It is
  • the slime of the drill bit and the side of the drill rod is quickly removed and the drilling speed is improved by reducing the friction force with the wall of the hole when rotating, and the slime placed on the screw attached to the drill rod or the drill rod is mostly removed. There is little slime to shake off, reducing complaints from falling rocks and scattering dust.
  • FIG. 1 is a perspective configuration diagram of a drill bit according to an embodiment of the present invention.
  • Figure 2 is a partial cross-sectional view showing the configuration of the connection passage in which the fluid is branched in the drill bit of the present invention
  • FIG. 3 is a cross-sectional configuration of FIG.
  • FIG. 4 is an operation diagram for adjusting the injection fluid amount of the upward injection passage by the opening and closing control unit
  • FIG. 5 is a perspective configuration diagram of a drill bit according to another embodiment of the present invention.
  • FIG. 6 is a cross-sectional view taken along line AA ′ of FIG. 5;
  • FIG. 7 is a view showing the opening and closing operation configuration by the shanghaidong of the slider according to the invention.
  • FIG. 8 is a cross-sectional view taken along line BB ′ of FIG. 5;
  • FIG. 9 is an operation diagram showing a locking structure by the vertical operation of the slider according to the present invention.
  • FIG. 12 is an operation view showing a configuration for opening and closing the upward injection passage by the drive sub of the hammer type drill bit
  • FIG. 13 is an operation diagram showing a configuration applied to the mubit through the opening and closing configuration of the upward injection passage of the present invention
  • 15 is a detailed view of the opening and closing operation unit according to the present invention.
  • the drill bit of the present invention is capable of simultaneously removing the drilling slime accumulated in the drill bit and the drill rod section above the drill bit at the time of the ground drilling by using the fluid supplied from above, and more effectively the drilling slime of the drill rod section By discharging it to increase the drilling speed.
  • the excavation slime means that the excavation is completed and the remaining slime floating in the drilling hole or placed on the screw of the drill rod section.
  • FIG. 1 is a perspective view showing the configuration of a preferred embodiment of the present invention.
  • the drill bit 2 of the present invention shown in FIG. 1 is an auger bit provided with a screw 8, and forms a drill bit joint 4 engaged with a drill rod at an upper end of the drill bit 2, and drill bit ( 2) It is configured to regulate the flow of the fluid supplied from above through the fluid supply passage (6).
  • compressed air, water, and the like may be used as the fluid supplied to discharge the slime, and preferably, it is effective to supply compressed air at high pressure.
  • FIGS. 2 to 3 describe the configuration of adjusting the fluid flow in the drill bit 2.
  • FIG. 2 is a partial cross-sectional view showing a configuration in which the fluid is branched in the drill bit of the present invention
  • Figure 3 is a cross-sectional configuration of FIG.
  • the fluid supplied through the fluid supply passage 6 is discharged through the upward injection passage 14 to upwardly inject the flow of the fluid together with the discharge port 18 under the drill bit 2.
  • the slime accumulated in the drill rod section by changing the direction of the fluid injected into the discharge port 18 through the fluid supply passage 6 to remove the floating slime in the drilling hole upward direction
  • An upward injection passage 14 for direct discharge is formed in the drill bit 2.
  • the upward injection passage 14 is formed in communication with the fluid supply passage 6 in the connection passage 30 in the drill bit 2, and directly discharges the flow of the fluid supplied from the upward upward from the drill bit (2) Changes can be made so that the slime attached to the drill rod or accumulated on the screw can be discharged.
  • a plurality of upward injection passage 14 can be formed in the drill bit (2), it is preferable to form two or more in the embodiment of the present invention. Furthermore, it is more effective to install under the drill bit 2 possible.
  • the upward injection passage 14 of the present invention is formed obliquely upward along the body of the drill bit 2, so that the outlet injection direction of the upward injection passage 14 is directed to the wall of the drilled hole, and thus the drill bit 2 and the drill rod. It is not possible to inject fluid directly on the outside of the screw or around the screw, reducing the upward discharge force.
  • the injection control member 10 is installed on the outlet side of the upward injection passage 14 to control the angle of the fluid to be injected and to allow the fluid to be directly injected in the vertical direction, injection control By adjusting the member 10 may be configured to change the injection position and the injection direction of the fluid injected through the upward injection passage (14) in real time.
  • the injection control member 10 is installed in a form surrounding the outlet of the upward injection passage 14, so that the direction of the fluid to be injected along the passage formed obliquely upward can be directly injected upward. Moreover, the outlet direction of the injection control member 10 can be rotated to the left and right to adjust the injection angle of the fluid.
  • FIG 4 is a view showing a configuration for adjusting the amount of fluid injected through the upward injection passage (14).
  • the drill bit 2 controls the amount of fluid injected into the upward jet passage 14 by adjusting the opening degree of the discharge port 18 through which the fluid supplied through the fluid supply passage 6 is discharged. .
  • an opening and closing control unit 12 for controlling the opening and closing of the discharge port 18 for injecting the fluid to the bottom of the drilling hole consequently to control the amount of fluid injected into the upward injection passage (14).
  • the opening and closing adjustment unit 12 is formed in the form of a screw to face through the lower wall of the drill bit (2), the sliding operation in the front and rear by the opening and closing adjustment unit 12 and discharge port ( 18, the linear operation piece 20 for opening and closing is screwed in.
  • the linear actuating piece 20 screwed into the opening and closing adjustment part 12 operates in the front and rear by tightening and loosening the opening and closing adjustment part 12, and is sprayed through the discharge hole 18 by opening and closing the discharge port 18 step by step.
  • the amount of fluid to be made can be adjusted according to the type of strata of the perforated ground.
  • the upward injection passage 14 for upwardly spraying the fluid is formed on the drill bit 2. It is effective to form at the bottom end.
  • the ratio of the amount of fluid injected into the bottom of the drilling hole and the amount of fluid directly injected upward is controlled in advance before the drilling operation, or by the drill bit 2 at any time according to the elevation of the drill rod, or by remote control by electrical control from the outside. It is also possible to install a drive such as a motor in the drill bit 2 by steering. In addition, it can also be adjusted by the supplied fluid pressure or externally connected to the pull cord.
  • the ratio of the fluid is injected downward during the drilling operation, and the upward spraying ratio is frequently used when a strong upward injection is required during the recovery of the drill or during the drilling operation. It can be increased, and most of the fluid supplied can be configured to be upward sprayed.
  • the opening / closing adjustment part as shown in FIG. 4 (b) and (c) before drilling.
  • the straight working piece 20 is pushed into the drill bit 2 core to block the discharge port 18 in a desired ratio, thereby adjusting the upward spraying rate.
  • the amount of fluid injected into the upward injection passage 14 is adjustable in consideration of the characteristics of the ground to be drilled and the conditions of the fluid supply amount and the supply pressure.
  • 50% or more of the fluid supplied through the fluid supply passage 6 is formed to be injected through the upward injection passage 14, preferably 70% or more to be discharged.
  • some of the fluid supplied through the fluid supply passage (6) is always the flow direction is turned upward through the upward injection passage 14 to be injected, the other part is opened and closed controlled by the opening and closing control unit 12
  • the fluid to be sprayed upward and the fluid injected to the bottom surface of the drilling hole may be configured to be adjustable.
  • the ratio of the fluid supplied to the fluid supply passage 6 is injected to the bottom surface of the drilling hole through the discharge port 18 and the ratio of the direct injection by upwardly changing the injection direction by the upward injection passage 14 to the ground layer. It is good to adjust accordingly.
  • FIG. 5 to 9 are views showing the configuration of a drill bit according to another embodiment of the present invention
  • Figure 5 is a perspective configuration diagram showing the overall configuration of another embodiment of the present invention.
  • the drill bit (2a) of the present invention is installed a plurality of drilling drill tip 22 to the end of the screw (8) and the slider 24 is installed in the drill bit (2a) operable up and down drill It is inserted and installed in the bit 2a, and a plurality of drill tips 22 are also installed at the end of the slider 24.
  • the injection control member 10a for adjusting the injection position and the injection angle of the fluid may be installed.
  • FIG. 6 is a cross-sectional view taken along the line A-A 'showing the internal structure of the drill bit 2a according to the present invention.
  • the core portion of the drill bit 2a is connected to the fluid supply passage 6 and the fluid branch passage 28 is formed.
  • a square tube fluid flow pipe 26 is provided.
  • the slider 24 is provided to surround the outer periphery of the fluid flow pipe 26 so as to be wrapped up and down, and the slider 24 has a connecting passage for changing the flow of the fluid into the upward jet passage 14a.
  • a large number 30 is formed.
  • the connection passage 30 is preferably formed in accordance with the number of the upward injection passage 14a formed on the outer periphery of the drill bit 2a, but may form a space integrated with the upward injection passage 14a.
  • Figure 7 (a) is to inject the fluid downward to the drill bit (2a) in order to discharge the slime of the bottom surface of the drilling hole during the drilling operation, (b) is a drill bit (2a) to complete the drilling operation Demonstrates an operating configuration to change the direction of injection so that fluid can be withdrawn or injected directly into the drill rod section.
  • the operator lowers the drill rod during the drilling operation so that the bottom of the drill bit 2a touches the bottom of the drilling hole so that the connection passage 30 and the upward injection passage 14a are in communication with each other as shown in FIG.
  • all of the fluid supplied to the fluid supply passage 6 is injected below the drill bit 2a to push the slime of the bottom surface of the drilling hole upward.
  • connection passage 30 and the upward injection passage 14a which are shifted by the lowering operation of the slider 24 communicate with each other, and the flow of the fluid is directly injected upward. At this time, the flow of the fluid injected below the drill bit 2a is The rotary operation piece 32 is swinged to block the fluid branch passage 28 formed in communication with the fluid supply passage 6 so as to be blocked.
  • the fluid branch passage 28 is opened as shown in FIG. 7A so that the flow of fluid can be injected below the drill bit 2a.
  • the rotating operation pieces 32 on both sides are pushed inwards by pushing the inclined surface 34 of the slider 24 and swung to fit. While closing, the fluid branch passage 28 is closed.
  • the fluid supply passage 6 and the upward injection passage 14a are opened and closed complementarily by the vertical operation of the slider 24 to change the flow direction of the fluid.
  • the fluid branch passage 28 is formed in a quadrangle, and both the rotary operation pieces 32 are also formed in a quadrangle so that the entire fluid branch passage 28 is closed by the rotary operation piece 32, thereby providing a fluid. All are to be injected into the upward injection passage (14a) through the connecting passage (30).
  • the rotary operation piece 32 When the fluid branch passage 28 is formed in a cylindrical shape, the rotary operation piece 32 may be formed in a semicircle shape, and the rotary operation piece 32 may be formed in a quadrangle as described above, so that some of the fluid supplied may be upward. With the injection passage 14a, the remainder can be sprayed to the bottom surface of the drilled hole through the discharge port 18.
  • more than 50% of the fluid to be supplied is upward sprayed through the upward injection passage (14a), preferably more than 70% of the fluid is effective to upward spray.
  • the fixing pin 38 for limiting the vertical movement of the slider 24 is installed in the drill bit 2a.
  • FIG. 8 is a cross-sectional view taken along line B-B 'of the drill bit 2a of the present invention, and on one side of the slider 24 for lifting and lowering, an operating space 36 is formed and fixed to the case of the drill bit 2a.
  • Fixing pin 38 is provided to be movable in the operating space (36).
  • FIG. 9 shows an operation configuration for limiting the lifting operation of the slider 24 by the fixing pin 38.
  • the slider 24 drills as shown in FIG. 9 (a).
  • the load of the slider 24 is applied.
  • the lowering operation is performed, wherein the lowering operation range of the slider 24 is operated by the vertical length of the operating space 36.
  • connection passage 30 and the upward injection passage 14a are restricted. Is in communication with the fluid branch passage 28 through which the fluid is injected below the drill bit 2a by the rotary operation piece 32 so that the flow of the fluid is changed to the upper portion of the drill rod section, that is, the drill bit 2a, so as to directly Sprayed.
  • the drill bit (2) (2a) of the auger bit type provided with a screw (8) in the drill rod section has been described as an example, as shown in Figures 10 to 11 hammer to punch the ground by the hammer hit It will be appreciated that the drill bit 2b is also applicable in the same configuration. Moreover, in the case of the hammer bit, the slime may be more easily attached to the outside of the drill rod pipe and the screw 8 due to the continuous impact of the hammer.
  • the configuration of the slider 24 inserted into the drill bit 2a to move up and down has been described, but the upper portion of the drill bit 2a is not formed in the slider 24 into the drill bit 2a. It is also possible to configure the drill tip 22 to be fitted to the outer slide 24, and to allow the fluid supply passage 6 to be opened and closed by moving the outer slide 24.
  • Reference numeral 40 is a shank member.
  • the opening and closing of the fluid supply passage (6) and the upward injection passage (14a) is configured to delay the operation to remove the remaining slime remaining on the bottom of the drilling hole immediately after completion of the drilling operation, and then switch the flow of the fluid to the upward injection It is configured to remove the floating slime of the drill bit (2b) outside and the drill rod section.
  • FIG 12 is an operation diagram showing an operation of opening and closing the upward injection passage 14a is delayed according to an embodiment of the present invention.
  • the injection direction is not immediately converted upward when the flow direction of the fluid is changed by the slider 24, but is fixed. Delays the flow of fluid to the time upward injection passage 14a so that all of the supplied fluid is used to remove residual slime at the bottom of the hole, and the flow of the fluid is switched to the upward injection passage 14a after first removing the residual slime at the bottom. This will push up the floating slime.
  • the fluid supply passage (6) is opened and closed by the slider (24) to move up and down to form a part of the drill bit (2b) of the present invention so that the fluid is injected upward through the upward injection passage (14a) 12
  • the operator moves up and down with the drill rod during the drilling operation as shown in FIG. 12A, and transmits the rotational force provided from the ground drill to the drill bit 2b and prevents the drill bit 2b from falling off. Since the sub 42 is lowered, the bottom surface of the drill bit 2b is in contact with the bottom surface of the drilling hole, so that the discharge port 18 is opened to blow up the slime of the bottom surface generated during the drilling operation.
  • the drive sub 42 may be lifted up to about 60 mm from the body of the drill bit 2b, and when about 40 mm or more is lifted, the fluid used for hammer operation is injected into the discharge port 18. Will be.
  • All of the supplied fluid is injected into the discharge port 18 so that the remaining slime remaining on the bottom of the drill hole is blown up through the vertical discharge port outside the drill bit 2b.
  • the drive sub 42 is lifted, but the drill bit 2b is raised.
  • the drive sub 42 can be completely removed if the drive sub 42 is not held higher.
  • the drive sub 42 is further lifted to recover the drill bit 2b.
  • the slider As the 24 is lowered, the discharge port 18 is closed and the upward injection passage 14a is opened to completely discharge the floating slime of the drill bit 2b and the drill rod section to the ground.
  • the upward injection passage 14a of the present invention may be in a state of communicating with the fluid supply passage 6 before the drilling operation, and the fluid may be upwardly sprayed through the upward injection passage 14a together with the discharge port 18. It is.
  • the upward injection path (14a) is delayed operation opening and closing using the separation distance according to the continuous lowering by drilling drilling of the main body of the drill bit (2b) and the stepping down of the drive sub (42) by the selection of the operator. can do.
  • the drilling operation is performed by a drill bit 2b for directly drilling a drilling hole, and a drive sub 42 that transmits the rotational force of the drilling machine located on the ground to the drill bit 2b.
  • the drill bit 2b is a drill hole.
  • Excavating the bottom surface is lowered at a constant speed and the drive sub 42 is stepped down in accordance with the drilling speed of the drill bit (2b).
  • the step-down of the drive sub 42 stops at the current position without being lowered for a predetermined time during which excavation is performed by the drill bit 2b, but stops at the current position.
  • the drive sub 42 is to be lowered at once.
  • the fluid is mainly through the discharge port 18 as if the drive sub 42 is slightly lifted up. It is discharged to discharge the remaining slime of the bottom surface of the drilling hole, when the distance is more than the set value, the upward injection passage (14a) is opened and the fluid is mainly injected upwards can discharge the floating slime to the outside.
  • the flow change of the fluid according to the separation distance between the drill bit 2b and the drive sub 42 may be operated by an operator, but in the preferred embodiment of the present invention, Stepwise fall according to the separation distance of the drill bit (2b) and the drive sub 42 is automatically controlled from the ground by the timer setting.
  • the drive sub 42 it is possible to automatically control the perforator by configuring the drive sub 42 to operate in descending operation according to the change in the frequency or amplitude of the hammer transmitted to the drill rod or the perforator when the hammer is hit.
  • FIG. 13 is an operation diagram showing a configuration of opening and closing the upward injection passage 14b in the mubit 2c.
  • the mubit 2c of the present invention constitutes an opening / closing key 44 for opening and closing the upward injection port 14b by the vertical operation of the drive sub 42.
  • the supplied fluid is injected downward through the discharge port 18 by pressing the opening / closing key 44 upward to block the upward injection passage 14b by the lowering operation of the drive sub 42 as shown in FIG. To be.
  • the mubit 2c of the present invention lifts only the drive sub 42 to a certain height, and injects even the fluid required for the hammer operation into the discharge port 18 so that The remaining slime can also be removed cleanly.
  • the opening / closing key 44 is moved up and down in the operation guide groove 46 formed deeper than the horizontal height of the upward injection passage 14b communicating with the fluid pressure supply passage 6, and the opening / closing key 44 is an upward injection passage ( Until the height of 14b) rises, that is, the upstream injection of the fluid into the upward injection passage 14b by the depth of the operation guide groove 46 is delayed.
  • the mubit 2c shown in FIG. 14 may control the flow of the fluid through the discharge port 18 while opening and closing the upward injection passage 14b.
  • 15 is a detailed view of the opening and closing operation unit of the present invention.
  • the mubit 2c includes an opening and closing operation part 48 for opening and closing the fluid supply passage 6 by the operation of the opening and closing key 44.
  • the opening and closing operation unit 48 operates in conjunction with the opening and closing key 44 for opening and closing the upward injection passage 14b by the drive sub-42.
  • the opening and closing key 44 is compressed together with the rising pressure of the fluid when the drive sub 42 is lifted as shown in FIG.
  • the spring 50 which has been compressed by the hinge operation of the link shaft 54, increases and is straight. Push the operating piece 20a to block the fluid supply passage 6.
  • the opening and closing operation unit 48 is preferably installed at both ends of the drill bit (2c) to block the fluid supply passage (6) by the linear operation piece (20a) is pushed in both directions.
  • the present invention can discharge most of the floating slime in the drilling hole during the drilling work as a strong upward slime discharge fluid flow during the construction work or ground drilling work for geothermal and resource development, reducing frictional resistance with the wall of the drilling hole drilling force This can be used to improve and reduce slime that will be scattered on the ground. In addition, it is possible to prevent the floating slime from falling during the recovery of the drill rod, so that little residual slime remains at the bottom of the drilling hole, and can be used to reduce the wear of the drill rod and to protect the drilling equipment.

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  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)

Abstract

La présente invention concerne un trépan destiné à l'excavation de terre qui est conçu pour utiliser un liquide fourni de l'extérieur afin d'évacuer la vase excavée vers l'extérieur du trou foré. Le trépan (2) comprend un passage d'évacuation vers le haut (14) qui change la direction d'écoulement d'un fluide alimenté vers le bas pour évacuer la vase vers une direction vers le haut de façon à être évacuée. La vase sur les côtés des trépans (2), (2a) et (2b) et d'une tige de forage est rapidement retirée de sorte que le frottement contre les parois d'un trou foré durant la rotation est réduit afin d'améliorer la vitesse de forage. La capacité de soutien d'une structure est améliorée parce qu'il n'y a aucune vase résiduelle laissée sur le fond d'un trou foré, et la vase déposée sur une tige de forage ou une vis (8) fixée à la tige de forage est principalement retirée de sorte qu'il n'y a pratiquement pas de vase à détacher au-dessus du sol, ce qui réduit les griefs civils du fait de roches tombantes et de poussière éparpillée.
PCT/KR2014/007709 2013-08-21 2014-08-20 Trépan destiné à évacuer directement la vase excavée au-dessus du sol et procédé d'utilisation de celui-ci WO2015026146A1 (fr)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
KR20130099078 2013-08-21
KR10-2013-0099078 2013-08-21
KR10-2013-0101798 2013-08-27
KR20130101798 2013-08-27
KR20130112133A KR20150021873A (ko) 2013-08-21 2013-09-17 굴착 슬라임을 지상으로 바로 배출하기 위한 드릴비트 및 그 사용방법
KR10-2013-0112133 2013-09-17

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WO2015026146A1 true WO2015026146A1 (fr) 2015-02-26

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PCT/KR2014/007709 WO2015026146A1 (fr) 2013-08-21 2014-08-20 Trépan destiné à évacuer directement la vase excavée au-dessus du sol et procédé d'utilisation de celui-ci

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9217293B1 (en) 2014-10-17 2015-12-22 Berkel & Company Contractors, Inc. Reversible displacement auger tool
US9512588B2 (en) 2014-10-17 2016-12-06 Berkel & Company Contractors, Inc. Reversible displacement auger tool

Citations (4)

* Cited by examiner, † Cited by third party
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US9217293B1 (en) 2014-10-17 2015-12-22 Berkel & Company Contractors, Inc. Reversible displacement auger tool
US9506295B1 (en) 2014-10-17 2016-11-29 Berkel & Company Contractors, Inc. Reversible displacement auger tool
US9512588B2 (en) 2014-10-17 2016-12-06 Berkel & Company Contractors, Inc. Reversible displacement auger tool

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