KR101174763B1 - Apparatus of discharging slime using drills for underground excavation and metohd thereof - Google Patents

Abstract

PURPOSE: An apparatus and a method for discharging slime to the outside using a drill for ground excavation are provided to completely discharge floating slime to the outside by operating a slime fall preventer. CONSTITUTION: An apparatus for discharging slime to the outside using a drill for ground excavation comprises a slime fall preventer(8). The slime fall preventer is installed on the front end of a drill rod(2) and has a radial expander, an actuator, a fluid pressure chamber, a fluid pressure exhaust port, and a valve unit. The actuator actuates the radial expander. The fluid pressure chamber applies fluid pressure to the actuator. The fluid pressure exhaust port is connected to the fluid pressure chamber. The valve unit controls the flowing direction of fluid flowing in a fluid supply passage.

Description

Slime processing device using ground drilling drill and its method {APPARATUS OF DISCHARGING SLIME USING DRILLS FOR UNDERGROUND EXCAVATION AND METOHD THEREOF}

The present invention relates to a construction method and apparatus in the construction field associated with the foundation or the ground of the structure, and more particularly to effectively discharge the slime generated in the excavation process for the buried construction of the pile or anchor or horizontal drilling It relates to a method and an apparatus.

In general, in the construction field, the entire drilling length is mainly used for the construction of tension members such as piles that are used for foundations, buoyancy-prevention anchors, slope stability, and piles that resist anchors or pull-outs used in ground-related structures. Drill with the same diameter. In addition, in order to improve the bearing capacity, the end portion of the pile or anchor, etc. may be partially partially drilled.

Slimes are generated in the ground in the process of drilling the same diameter or partially expanding the drilling. The slime generated in this way is discharged during the drilling process, but during the recovery of the drill to the ground, a large amount of slime falls to the bottom of the drilling and accumulates on the bottom.

If the structure is constructed with residual slime accumulated on the bottom of the perforated tip, the settlement of the tip support and the settling length will be reduced when the load is applied to the structure. If the foundation of the structure is a pile, the bearing capacity is weakened and the long-term settlement is increased, which impairs the safety of the structure.If the foundation is an anchor member, the anchorage length and the adhesion force are reduced. The more severe the damage.

In actual construction, the drilling equipment is raised and lowered to the ground and the ground several times for the treatment of the remaining slime, and the slime is discharged as much as possible using fluid pressure, or the slime is discharged by using air and circulating water. It takes extra equipment and construction period for the discharge of residual slime, is cumbersome and pollutes much of the site.

The slime remaining on the bottom of the perforation depends a lot on various ground characteristics, on-site conditions such as groundwater and drilling equipment, and it is very difficult to keep the thickness of the remaining slime on the bottom of the perforation thin and uniform. Furthermore, the wear on the outer circumference of the drill rod circumference, where the drill is mounted on the tip, increases the gap between the wall retaining casing and the drill rod outer side, causing much more slime to fall to the ground in the process of recovering the drill to the ground.

In fact, the thickness of the remaining slime accumulated on the bottom of the drill at 20 to 30 meters of vertical drilling varies slightly depending on the ground conditions, drill characteristics, and wear of the outer diameter of the drill rod, but it can be at least 20 cm to 100 cm, which reduces the bearing capacity of the structure. It is a level that greatly threatens the safety of the structure body by increasing the settlement amount.

As a countermeasure against this, in the case of a ready-made pile, the lower end of the pile is manufactured as an open end so that the slime rises to the center by the final stroke, and the pile body reaches the bottom of the perforation as much as possible. As it is not opened, the tip bearing capacity of the pile is considerably lowered.

In the case of cast-in-placement piles, it is difficult to make final strikes, so slime discharge to prevent long-term settlement is more urgently needed.

In the case of a tension member such as an anchor or a tension pile, additional drilling is not performed as much as residual slime is contained, and thus the safety of the structural member is impaired due to the lack of a settling length.

As an example of a prior art document regarding a slime treatment method, there is a Korean Patent No. 10-0677165 (called "prior patent document 1") "a slime removal apparatus and its removal method". Prior Patent Document 1 adds a separate large suction tower and equipment such as slime chamber and process.

As an example of another prior art document regarding the slime treatment method, there is a Korean Patent Application Publication No. 10-2011-0035068 (referred to as "Previous Patent Document 2") "a device for removing residues in an excavation hole and a method for removing residues using the same". Prior Patent Literature 2 has the advantage of not requiring a separate fresh water supply, unlike the Prior Patent Literature 1, but requires a separate device such as a spray nozzle, a pressurized pump, a collecting means, and a slime storage container, and it takes a lot of time and repetition for direct collection and floating material collection. There is a problem that takes work.

As described above, in order to secure a sufficient bearing capacity of the pile or tension member, conventional technologies have to perform additional processes by inputting a separate equipment for the remaining slime treatment after the drilling is completed, and thus, economical efficiency is reduced and air is added. In addition to the waste water, most of the accompanying water treatment is very disadvantageous in terms of environmental aspects around the site.

Therefore, an object of the present invention is a drilling tool in operation without inputting a separate equipment for the slime treatment during the drilling work for the construction of the pile or tension member in the construction related to the foundation or ground of the structure or the installation of the horizontal structure The present invention provides a slime removal method and apparatus for removing most of the remaining slime remaining in the perforation hole.

Another object of the present invention is to provide a slime removal method and apparatus for securing economic efficiency and shortening the air in removing slime generated during drilling.

Another object of the present invention is to provide a slime removal method and apparatus for improving the bearing capacity of the pile in the drilling work during construction work, reduce long-term settlement and improve the resistance to pull in the case of tension members.

According to the above object, the present invention, In the slime removal device generated during drilling work in construction, the slime drop prevention device is installed near the tip of the drill rod to which the drill bit can be mounted, and the slime drop prevention device is provided with an actuator for moving the radial expander and the radial expander; A fluid pressure chamber for applying a fluid pressure to the actuator and a slime discharge fluid ejection port for forming a fluid pressure flow above the radial extension body, and extending a fluid supply passage to the drill bit body and the drill rod; And a valve unit intermittently controlling the injection into the fluid pressure chamber and the injection into the fluid pressure outlet for slime discharge with respect to the fluid in the fluid supply passage.

In addition, the present invention, in the slime removal device generated during the drilling work for construction, the slime drop prevention device is installed near the tip of the drill rod can be mounted drill bit, the slime drop prevention device is formed a sliding inclined portion at the end of the drill rod And a radial expansion body that is radially expanded while being inclined sliding by the own weight of the ground excavation drill in the sliding slope portion, and a fluid pressure ejection hole for slime discharge which forms a fluid pressure flow above the radial expansion body. And a valve unit which extends the fluid supply passage in the drill rod and intermittently controls the injection into the slime discharge fluid pressure ejection outlet with respect to the fluid pressure in the fluid supply passage.

In addition, the present invention, in the slime removal method generated during the drilling work of the construction work, the slime fall prevention device is installed in the vicinity of the tip of the drill rod, while drilling with a ground drilling drill to simultaneously inject the slime generated by drilling The process of discharging from the perforation part, and expanding the slime drop prevention mechanism located near the tip of the drill rod after completion of the formation of the drilling hole to block the perforation part of the tip, and the direction of injection fluid pressure in the slime drop prevention It is characterized in that the process made to discharge the remaining slime remaining in the drill rod section by changing the fluid pressure flow upward.

In addition, the present invention, in the slime removal device generated during drilling work for construction, the slime drop prevention device is installed near the tip of the drill rod can be mounted, the slime drop prevention device is a radial expansion body and the radial expansion body And a fluid pressure outlet for slime discharge to form a fluid pressure flow above the radial extension, and a fluid pressure pressurizing passage for applying a fluid pressure to the actuator. And a valve unit for extending the supply passage and intermittently controlling the injection of the fluid pressure pressurization passage and the injection into the slime discharge fluid pressure ejection outlet for the fluid in the fluid supply passage.

In addition, the present invention, in the slime removal device generated during drilling work for construction, the slime drop prevention device is installed near the tip of the drill rod can be mounted, the slime drop prevention device is a radial expansion body and the radial expansion body And a working pressure actuator and a fluid pressure chamber for applying fluid pressure to the actuator, and extending a fluid supply passage to the drill bit body and the drill rod and injecting the fluid in the fluid supply passage into the fluid pressure chamber. It is characterized by consisting of a valve unit for controlling the interruption.

In addition, the present invention, in the slime removal method generated during the drilling work of the construction work, the slime fall prevention device is installed in the vicinity of the tip of the drill rod, while drilling with a ground drilling drill to simultaneously inject the slime generated by drilling And a process of recovering the drill rod from the hole by expanding the slime drop prevention tool located near the end of the drill rod after the formation of the hole, and then recovering the drill rod from the hole. .

In another aspect, the present invention, in the slime removal device generated during drilling work for construction, the slime drop prevention device is installed near the tip of the drill rod can be mounted, the slime drop prevention device; A plurality of radial extensions of arc-shaped dividing blocks, an actuator having a streamlined head and interposed between the radial extensions and pushing the radial extensions to radial expansion, and a slime to form a fluid pressure flow above the radial extensions A discharge fluid pressure ejection port is provided, and the actuator is operated by using the fluid pressure supplied through the drill bit body and the fluid supply passage extending to the drill rod to remove residual slime in the drill rod section after drilling. It is characterized by the configuration.

The present invention is a drilling hole in a general manner using the fluid pressure (pneumatic or hydraulic pressure) for the drilling and slime treatment of the drilling drill itself used in the drilling operation without the use of fresh water supply or circulating water or separate residual slime treatment means When the inner slime is processed to the outside, the slime fall prevention device installed at the height of the lower rod is operated by the wireless, wired, or maneuvering method on the ground at the completion of the drilling to prevent the floating slime falling from the upper part of the perforated tip. In this state, the slime located at the top is completely discharged so that the slime is discharged enough to not accumulate on the bottom of the perforation.

In the present invention, since most of the floating slime is discharged to the outside during the recovery of the drill to the ground without slime accumulating on the bottom of the drilling hole, the bottom surface can almost maintain the original state at the time of completion of drilling, thus securing the bearing capacity of the pile and preventing long-term settlement. And it is easy to secure the pulling force of underground anchors and the like.

In addition, in the present invention, unlike the conventional method that requires the completion of the drilling and recover the drill to the ground and then separate residual slime treatment apparatus and process, in the present invention, the drill is used before the drill is completely recovered from the ground to the ground. As the remaining slime treatment is completed, it is very simple and economical, and the air is shortened, and only the slime discharged from the ground is treated, so that the environment around the site is not messy and neatly cleaned.

1 is a configuration diagram of a drill rod equipped with a slime fall prevention device in accordance with an embodiment of the present invention;
Figure 2 is a detailed cross-sectional perspective view of the slime drop prevention device of Figure 1,
3 is a partial cross-sectional perspective cross-sectional view of FIG.
Figure 4 is a cross-sectional configuration of the slime drop prevention device of Figure 1,
5 is a cross-sectional view taken along the line AA of FIG.
6 is a cross-sectional view taken along line BB of FIG.
7 is a slime drop prevention configuration of another expansion body,
8 to 10 are various examples of the opening and closing key operating mechanism,
11 is a sectional view showing the main parts of an operating state of the opening / closing key shown in FIGS. 9 and 10;
12 is a conceptual diagram of operating the key for opening and closing using the pipe for key control,
13 is a cross-sectional perspective view of a main part for operating an opening / closing key using a key control extension pipe formed on a drill rod and a key control box installed at the ground portion;
14 is a cutaway configuration diagram of the key control box of FIG.
15 is a conceptual view of operating the key for opening and closing using the key control extension pipe and the traction line formed in the drill rod,
16 is a slime drop prevention configuration using the weight of the ground drilling drill according to another embodiment of the present invention,
17 is a view showing that the fall prevention device of FIG. 16 uses the key slot to move up and down;
18 is a slime drop prevention configuration according to another embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a configuration diagram of a drill rod 2 equipped with a slime drop preventing device 8 according to an embodiment of the present invention, the drill rod 2 shown in (a) of Figure 1 is a slime induction surrounding the shaft It is a tubular drill rod having a tube 4, and the drill rod 2 shown in Fig. 1B is a screw type drill rod having a spiral blade 6 formed on the shaft. These drill rods 2 may be connected in multiple stages depending on the drilling depth.

At the top of the drill rod 2, a drill bit body 7 having a drill bit is mounted or a drill bit body 7 is mounted together with a hammer part.

The tubular drill rod 2 shown in (a) of FIG. 1 is expensive but can narrow the gap between the steel pipe casing 3 and the slime induction pipe 4 that are fitted to prevent collapse of the drilling hole 1. Therefore, the slime discharge power due to the floating air pressure is very excellent.

Screw-type drill rod (2) as shown in Figure 1 (b) is mainly used in the formation of the drill holes (1) for the pile and is cheaper than the tubular shape and repaired by welding the reinforcement member when the spiral wings (6) wear There is an easy advantage. However, the screw-type drill rod (2) has a relatively wider gap between the steel tube casing (3) and the spiral blade (6) than the tube la type, so the slime discharge force due to the floating air pressure is lower than the tube la type. The spiral blades 6 of the screw-type drill rods 2 become evacuation routes that can be prevented from falling vertically when a part of the airborne slime falls due to less floating force. ), A lot of slime is left.

In the present invention, in order to remove the slime generated during the drilling work for construction, the radially expandable slime drop prevention device 8 is provided near the tip of the drill rod 2 as shown in FIG. 1 (a) (b). There is an enemy characteristic.

2 to 6 are views related to the slime drop prevention device 8 of the present invention, FIG. 2 is a detailed cross-sectional perspective view of the slime drop prevention device 8 of FIG. 1, and FIG. 3 is a partial cross-sectional perspective view of FIG. 2. FIG. 4 is a sectional plan view of the slime drop preventing device 8 of FIG. 1 associated with the steel pipe casing 3. 5 is a cross-sectional view taken along the line A-A of FIG. 4, and FIG. 6 is a cross-sectional view taken along the line B-B of FIG.

2 to 4 together, the slime drop prevention device 8 of the present invention is preferably mounted on the tip of the drill rod 2, it is mounted on the tip of the drill rod (2) It may be mounted on the upper portion of the drill bit body (7 of FIG. 1) installed at the tip of 2) or may be installed inside the drill bit body (7). The drill bit body 7 may include a hammer or be configured without a hammer.

The slime drop preventing device 8 of the present invention includes a connecting table 9 having a side open case 10, and a lower portion of the connecting table 9 is provided with a drill bit body 7 or a coupling groove 11a. The fastener 11 having) is integrally formed.

The connecting rod 9 is mounted to the front end of the drill rod 2 by a joining method such as fitting, fastening, or welding, and the radially extending body 12 and the radially expanding body are provided in the side open case 10 of the connecting member 9. The actuator 14 for operating the sieve 12 has a configuration in which the sieve 12 is inserted. The radial extension 12 and the actuator 14 are fixedly coupled with a fastening member such as a bolt or the like.

If the radial extension 12 is formed of an elastic material such as rubber or urethane, it may be formed in a donut shape as shown in FIGS. 2 to 4, and may be formed of a rigid material made of a resin, a metal, a polymer material, or the like. As shown in FIG. 7, arc-shaped partition blocks are formed.

As shown in FIG. 7, the radial expander 12 may be configured to be connected to a flexible joint member 13 that may prevent slime from falling between adjacent radial expanders 12 formed as an arc-shaped dividing block.

The actuator 14 which pushes the radial extension 12 to extend radially is a plurality of arc-shaped members, which are guided to the upper guide protrusion 10a of the case 10 on both sides of each arc-shaped actuator 14. Step surface 14a is formed so that it may become.

In addition, a fluid pressure chamber 16 is formed in the core of the case 10 by a chamber inner partition formed concentrically, and a plurality of through holes 17 are provided in the chamber inner partition so that a fluid pressurizing the actuator 14 can pass therethrough. Is formed.

Each of the through holes 17 formed in the inner partition wall of the chamber is preferably fitted with a stopper 23 for adjusting the operating pressure. The stopper 23 fitted into the through hole 17 is in the form of a pipe through which the fluid pressure can pass, and the front end is fixed to the actuator 14 and the rear end of the stopper 23 is configured to have a locking step. The stopper 23 is a very high pressure of 10 ~ 30kg / ㎠ when the air pressure is used for the slime discharge with the stopper function to prevent the actuator 14 from moving forward anymore while using the actuator 14 Promote the proper pressure to pressurize.

Therefore, when a high fluid pressure acts on the fluid pressure chamber 16, the high fluid pressure injected through the through hole 17 of the fluid pressure chamber 16 pushes the actuator 14, so that the radial extension 12 is radial. Can be extended.

The upper part of the case 10 is formed with a fluid pressure ejection outlet 18 for slime discharge communicated with the fluid pressure chamber 16. The slime discharge fluid pressure ejection outlet 18 is a means for forming a fluid pressure flow above the radial expander 12, and is preferably located above the case 10, but may be formed in the radial expander 12. have. When a high pressure acts on the fluid pressure chamber 16, a fluid of high pressure is ejected upward of the radial expansion body 12 through the slime discharge fluid pressure ejection opening 18. As shown in FIG.

In the deep part of the drill rod 2 shown in FIG. 1, a tubular fluid supply passage 20 for supplying a fluid such as air or liquid having a very high pressure is provided at the uppermost end of the drill rod 2 in which the drill bit is installed. To extend. In addition, the fluid supply passage 20 is formed through the drill bit body 7 on which the drill bit is mounted, to the discharge hole formed under the drill bit body 7.

When drilling with the ground drilling drill, the very high fluid pressure injected through the fluid supply passage 20 is discharged to the discharge hole below the drill bit body 7 and is generated from the slit generated at the end perforated portion drilled by the drill. It is floated and discharged upwards.

In the slime drop prevention device 8 of the present invention, the radial expansion body 12 is driven to expand by using a high pressure fluid pressure passing through the fluid supply passage 20 after completion of the formation of the drilling hole to block the drilled part by drilling the rod. (2) It prevents the slime in the section from falling into the perforated part and changes the flow direction of the strongly injected fluid pressure directly from the inside so that the drill rod (2) is directly directed upward. Allow remaining slimes in the section to be discharged to the outside.

To this end, the slime fall prevention device 8 is a valve unit for intermittently controlling the injection of the fluid flowing in the fluid supply passage 20 into the fluid pressure chamber 16 or the fluid pressure outlet 18 for slime discharge. 22).

The valve unit 22 controls the valve so that a strong fluid pressure can be discharged through the lower discharge port of the drill bit body 7 through the fluid supply passage 20 during the drilling of the ground drilling drill. When the formation of (1) of FIG. 1 is completed, the fluid pressure chamber 16 and the slime discharge fluid pressure of the slime drop prevention device 8 are changed by changing the flow path of the fluid pressure to the lower discharge port of the drill bit body 7. The valve is controlled to be injected into the blower outlet 18.

Valve unit 22 is a variety of within the range that is implemented to be stable and durable in the adverse conditions such as the slime fall prevention device 8 is located deep in the ground during the drilling operation, and subjected to a strong blow by the mounted hammer, etc. Configuration is possible. If a conventional three-way valve can be operated suitably in such a condition, the three-way valve can also be employed as the valve unit 22 of the present invention.

In constructing the slime drop prevention device 8, the valve unit 22 shown in FIGS. 2 to 6 performs opening and closing control by using the opening and closing key 24.

That is, the valve unit 22 forms a switching passage 26 branched from the fluid supply passage 20, and the switching passage 26 is formed in communication with the fluid pressure chamber 16. In addition, the key operation chamber 42 is formed on the fluid pressure chamber 16, and the opening and closing key 24 is installed to open one of the fluid supply passage 20 and the switching passage 26. A driving unit 28 capable of driving the key 24 is provided.

The driving unit 28 for driving the opening and closing key 24 may be wired or wirelessly adjusted, and may use a motor using a mounting battery or an external power source as a power source and a gearbox for shifting, and an actuator may also be used. The drive unit 28 may be configured to be mounted inside the tip of the drill rod 2 to be wired or wirelessly adjusted, or may be configured to be manually operated from the ground using the tow line 32.

2 and 3 show an example in which the drive unit 28 is configured using the battery, the motor, and the gearbox for opening / closing the key 24. When the switching passage 26 is opened, FIGS. As in (b), the drive unit 28 moves the opening and closing key 24 to the left side so that the fluid pressure is injected into the fluid pressure chamber 16. When the switching passage 26 is closed and the fluid supply passage 20 is opened as usual, the driving force of the driving unit 28 is used or the biasing force of the return spring 30 mounted on the opening / closing key 24 is used. The opening key 24 can be moved to the right. Then, as in FIGS. 5 and 6 (a), the fluid pressure does not go to the switching passage 26 but passes through the fluid supply passage 20.

8 shows a configuration in which the drive unit 28 for driving the opening and closing key 24 uses the traction line 32.

The tow 32 is connected to both ends or one end of the opening and closing key 24, and is formed to extend to the ground through the drill rod 2 while being guided by the guide roll 34 at the side end. By pulling or releasing the tow string 32 by using an external electric regulator or to open and close the key 24 can be opened and closed operation.

In the example of FIG. 8, when the return spring 30 is provided in the opening / closing key 24 as shown in FIG. 3, the traction line 32 may be connected to only one end of the opening / closing key 24.

9 and 10 illustrate an example of a driving unit in which an opening and closing key 24 is driven but indirectly controlled using a fluid pressure and key control boxes 36 and 38.

In FIGS. 9 and 10, the left and right key control branch passages 40 are branched from the fluid supply passage 20 so as to communicate with the left and right ends of the key operation chamber 42, and the left and right key control branch passages 40 are formed. It opens and closes using the control keys 36a and 38a of the key control boxes 36 and 38.

The control key 36a of the key control box 36 shown in FIG. 9 is connected to the traction line 32 as a key capable of vertical operation, and the control key 38a of the key control box 38 shown in FIG. Is connected to the draw line 32 via the guide roll 44 as a key capable of horizontal operation. The return springs 46 are also provided in the control keys 36a and 38a in FIGS. 9 and 10.

When one of the left and right traction lines 32 is pulled, a corresponding one of the left and right control keys 36a and 38a is opened so that a part of the strong fluid pressure flows into the open one of the left and right key control branch passages 40 to operate the key. It is injected into one end of the left and right ends of the seal 42. Then, the opening / closing key 24 subjected to the fluid pressure in the key operating chamber 42 is moved to the left or right side (front or rear) to direct the fluid pressure flowing into the fluid supply passage 20 to the fluid pressure chamber 16. You can switch.

11 shows the configuration and operation of the opening / closing key 24 shown in FIGS. 9 and 10. FIG. 11A illustrates a case in which the opening / closing key 24 opens the fluid supply passage 20, and FIG. 11B illustrates a case in which the opening / closing key 24 opens the switching passage 26. In the case of communicating with the fluid pressure chamber 16.

1 to 11, the switching passage 26 has been described as an example formed separately by using a pipe. However, when the fluid supply passage 20 penetrates the fluid pressure chamber 16, a separate pipe is used. It should be understood that this may be achieved by forming an inlet with an on / off valve in the fluid supply passage 20 at the position of the fluid pressure chamber 16 without branching. Therefore, it is to be understood that the diverting passage 26 includes the concept even when an inlet having an open valve is formed at the position of the fluid pressure chamber 16 without the pipe branch.

12 is a conceptual diagram of operating the opening and closing keys by using one or two key control pipes 50 installed in the longitudinal direction in each drill rod 2, Figure 12 is an example of the two key control pipes 50 Is showing.

When the drill rods 2 are connected in multiple stages, the pipes 50 for key control installed in each drill rod 2 are formed in a row, and separate fluid pressure P is applied to two key control pipes 50 connected in series. By staggered injection, the opening and closing key 24 in the key operating chamber 42 near the tip of the drill rod as shown in FIGS. 9 and 10 is opened and closed.

In FIG. 12, there are no key control boxes 36 and 38 as shown in FIGS. 9 and 10, and a fluid pressure P separate from the fluid pressure injected through the fluid supply passage 20 is provided to the external fluid injection control means. 13 may be injected, or the fluid pressure P branched from the fluid supply passage 20 may be injected through the key control box 52 described in FIG. 13.

FIG. 13 is a cross-sectional perspective view of the main part for operating the key for opening and closing using the key control pipe 50 formed in the drill rod 2 and the key control box 52 installed at the ground portion. 14 is a cutaway perspective configuration diagram of the key control box 52 of FIG. 13.

13 and 14 together, the key control box 52 having the same function as the key control boxes 36 and 38 located inside the tip of the drill rod 2 in FIGS. 9 and 10 is exposed to the ground portion. Or mounted in close proximity to the drill rod 2 position, the control key 52a of the key control box 52 is configured such that the adjustment knob 54 is connected via a string. "52b" is a return spring.

The key control pipe 50 branched from the pipe-type fluid supply passage 20 functions the same as the switch passage 26 of FIGS. 1 to 8 or the same as the key control branch passage 40 of FIGS. 9 and 10. Can function.

13 and 14, when the key control pipe 50 communicates with the fluid pressure chamber 16 as shown in FIGS. 1 to 8, only one key control pipe 50 is installed in the drill rod 2. do. 9 and 10, two key control pipes 50 are used to communicate with both ends of the key operation chamber 42 to open and close the opening and closing key 24 in the key operation chamber. Configure.

In FIG. 15, the key control pipe 50 formed in the drill rod 2 is configured such that the traction line 32 passes through, so that the opening and closing key 24 is operated as shown in FIG. 8. Unlike in FIG. 8, in the configuration of FIG. 15, since the tow string 32 passes through the pipe 50 for key control, the tow of the tow string 32 can be easily and safely implemented.

Meanwhile, the slime falling prevention device of the present invention may be implemented to operate using the own weight of the ground drilling drill.

FIG. 16 is a block diagram of a slime drop prevention device 8A using the self-weight of the ground drilling drill according to another embodiment of the present invention, and FIG. 17 is a slime drop prevention device 8A of FIG. 16 using a key slot. The figure shows that the upper and lower limit movement.

 16 and 17 together, the slime fall prevention device (8) has a connecting rod (9) fastened to the end of the drill rod (2), the connecting rod (9) forms a sliding inclined portion (60) In addition, the sliding inclined portion 60 is provided with a radial expansion 62 radially expanded while being inclined sliding by the weight of the ground drilling drill.

Loosely fasten the fastener 64 which can provide heavy self-weight along with the ground drilling drill in the lower part of the connecting table 9, and as shown in FIG. It is configured to be fastened to the key slot 66 that defines the moving distance.

The fastener 64 has a structure in which the radial expansion body 62 is slidably supported, and a drill bit body (7 in FIG. 1) or a hammer is mounted on the lower portion of the fastener 64 as in the example shown in FIG. 2. Can be.

The fluid supply passage 20 extends in the core portion of the connecting table 9 and the fastener 64, and a valve 70 capable of opening and closing the fluid supply passage 20 is provided, and the fluid formed in the connecting table 9 is provided. A plurality of injection holes 72 are formed in the inner wall portion of the supply passage 20. The injection hole 72 is naturally opened as the fastener 64 is lowered within the Shanghai distance range defined by the key slot 66, so that the temporary chamber 74 is formed between the connecting rod 9 and the fastener 64. And the temporary chamber 74 is in communication with the slime discharge fluid pressure outlet 18 located near the radial expansion body 62. The inlet 72 is naturally closed when the fastener 94 rises to the highest point in the Shanghai distance range defined by the key slot 66, and the temporary chamber 74 formed between the connecting rod 9 and the fastener 64. ) Disappears.

During drilling of the ground drilling drill, the valve 72 is opened so that a strong fluid pressure can be discharged through the lower discharge port of the drill bit body (7 in FIG. 1) through the fluid supply passage (2). After the formation of the drilling hole (1 in FIG. 1) is completed, the flow path of the fluid pressure to the lower discharge port of the drill bit body (7 in FIG. 1) is blocked, that is, the valve 72 is closed and the drill rod 2 is closed. The radial extension 62 radially expands downward along the sliding inclined portion 60 formed on the connecting rod 9 by pulling up the connecting rod 9 of the slime drop prevention device 8A mounted at the tip of the slide. do. At the same time, since a plurality of inlets 72 of the inner wall of the fluid supply passage 20 are naturally opened and a temporary chamber 74 is formed between the connector 9 and the fastener 64, the fluid supply passage 2 has been heated. A strong flow of fluid pressure is formed by the inlet 72, the temporary chamber 74, and the slime discharge fluid pressure outlet 18 communicating with the temporary chamber 74.

18 is a configuration and operation state diagram of the slime drop prevention device (8B) according to another embodiment of the present invention.

The slime fall prevention device 8B shown in FIG. 18 has a radial expansion body 12 formed of an arc-shaped dividing block similarly to the slime fall prevention device 8 shown in FIG. 7.

Although the slime drop preventing device 8 of FIG. 7 is connected to the joint member 13 which can prevent slime falling between the radial expansion bodies 12, the slime drop preventing device 8B shown in FIG. An actuator 80 having a streamlined head in place of the member 13 is configured to be sandwiched between the radial expanders 12 which are arc dividing blocks.

In FIG. 18, curved inclined surfaces are formed at the rear left and right ends of the radial expander 12 so that the streamlined actuator 80 can be easily inserted, and the radial extender 12 is extended to the center and then returned to its original position. A return spring 82 is provided which gives a biasing force.

The actuator 80 which pushes the radial extension 12 radially expands has a streamlined shape at the head and a push rod 80a integrally formed at the rear end, but the push rod 80a is a fluid pressure chamber 16. It is configured to fit in the operation hole formed in the inner wall of the fluid pressure groove portion is formed from the rear end toward the head.

Therefore, when a high fluid pressure flows into the fluid pressure chamber 16, the actuator 80 is pushed forward as shown in Figs. 18A to 18C, and the arc actuator 14 in the form of a divided block is opened. At the same time as the push is caught between the arc actuator (14).

In this state, the slime fall prevention device 8B prevents the remaining slime remaining in the drill rod 2 section from falling to the periphery of the drilled part, and a strong fluid pressure is ejected to the slime discharge fluid pressure ejection outlet 18. When the residual slime remaining in the section of the drill rod (2) is discharged to the outside as possible.

Then, when the fluid pressure disappears in the fluid pressure chamber 16, the radial extension 12 in the expanded state is reduced in diameter by the compression force of the return spring 82, and the radial extension 12 pushes the actuator 80 in. By zooming, all of them are returned to their original positions, and are in a state as shown in FIG.

In the present invention described above with reference to the accompanying drawings, the fluid of the high pressure through the slime discharge fluid pressure ejection port 18 has been described as an example in which the ejection above the radial expansion body 12, 62, the slime discharge fluid pressure It can also be used without the blower outlet 18. In this case, if the drill rod 2 is recovered from the drilling hole while the radial expanders 12 and 62 are expanded, the remaining slime in the drill rod 2 section does not fall to the bottom of the drilling hole.

In addition, in the present invention, the actuator 14 for operating the radial expander 12 (62) has been described as an example to operate with the fluid pressure applied to the fluid pressure chamber 16, the actuator 14 It should be understood that it is also possible to form a fluid pressure pressurized passage which can be pressurized immediately and to use the fluid pressure pressurized passage.
In addition, in the present invention, the slime drop prevention device can be configured without the radial expanders 12 and 62 and the actuator 14.
In other words, the slime removal device of the present invention for removing slime generated during drilling work in the construction, the slime drop prevention device is installed near the tip of the drill rod that can be mounted drill bit of the ground excavation drill, And a fluid pressure pressurizing passage for applying a fluid pressure to the slime discharge fluid pressure ejection outlet 18 for forming a fluid pressure flow above the drilling hole 1, and a drill bit. The fluid supply passage 20 is extended to the main body 7 and the drill rod 2, and the valve unit is configured to intermittently control the injection of the fluid pressure pressurization passage with respect to the fluid in the fluid supply passage 20. .
This slime fall prevention device is applicable to all of the slime fall prevention devices (8) (8A) (8B) shown in the drawings in a number of ways, it is possible to prevent the falling of the slime only by a strong air pressure upwards of the drilling hole.
The slime removal method generated during the construction work drilling work using the slime drop prevention device of the present invention implemented without the radial expansion bodies 12 and 62 and the actuator 14 is perforated and drilled at the same time with a drill for drilling a ground. Discharging the slime generated by the injection fluid pressure from the perforation part, and changing the direction of the injection fluid pressure in the slime drop prevention port located near the tip of the drill rod after completion of the formation of the perforation hole (1). 1) Direct hydraulic pressure flow upwards to allow the remaining slime remaining in the drill rod (2) section to be discharged to the outside and at the same time to recover the drill rod (2).

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments. Therefore, the scope of the present invention should not be defined by the described embodiments, but should be defined by the claims and their equivalents.

The present invention can be used to effectively discharge the slime generated during the excavation process for the construction of the pile or anchor during the construction or horizontal drilling.

(1)-Drilling hole (2)-Drill rod
(3)-steel pipe casing (4)-slime induction pipe
(6)-Spiral Wings (7)-Drill Bit Body
(8) (8A) (8B)-Slime drop prevention device (9)-Connecting rod
(10)-Case (11) (64)-Fastener
(12) (62)-Radial Expansion (13)-Joints
(14)-Actuator (16)-Fluid Pressure Chamber
(17)-Through-hole (18)-Fluid pressure outlet for slime discharge
(20)-Fluid supply passage (22)-Valve unit
(24)-Opening key (26)-Switching path
(28)-Drive (30) (46) (52b) (82)-Return spring
(32)-Traction String (34) (44)-Guide Roll
(36) (38) (52)-Key Control Box (36a) (38a) (52a)-Control Key
(40)-Branch passage for key control (42)-Key operating chamber
(50)-Pipe for key control (54)-Adjustment knob
(60)-sliding slope (66)-keyslot
(68)-lock key (70)-valve
(72)-Injection port (74)-Temporary chamber
(80)-actuator (80a)-push rod

Claims (23)

In the slime treatment device for removing the slime generated during the drilling work of construction,
The slime drop prevention device is installed near the tip of the drill rod to which the drill bit can be mounted, and the slime drop prevention device includes an actuator for activating the radial extension and the radial extension, and a fluid pressure chamber for applying fluid pressure to the actuator; A fluid pressure outlet for slime discharge which directly forms a fluid pressure flow for slime discharge directly above the radial extension body, and a fluid having a strong fluid pressure for slime discharge to the discharge hole below the drill rod and the drill bit body. The flow path is formed so that the supply passage is extended and the discharge flows into the lower discharge port of the drill bit body, the injection into the fluid pressure chamber, and the injection into the fluid pressure ejection outlet for the slime discharge against the strong fluid pressure flowing into the fluid supply passage. Ground drilling drill, characterized in that consisting of a valve unit for controlling the change of One slime processor.
The method of claim 1, further comprising a switching passage branched from the fluid supply passage to communicate with the fluid pressure chamber, characterized in that the valve unit is configured to control the injection interruption of the fluid supply passage and the fluid in the switching passage. Slime processing device using a ground drilling drill.
The slime processing apparatus according to claim 2, wherein the valve unit comprises an opening / closing key for opening one of the fluid supply passage and the switching passage, and a drive unit for driving the opening / closing key. .
According to claim 3, The drive unit slime processing apparatus using a ground drilling drill, characterized in that consisting of a motor and a gear box.
According to claim 3, The drive unit is a slime processing device using a ground drilling drill, characterized in that configured using a traction cord connected to the opening and closing key.
According to claim 3, wherein the drive unit is arranged to align the key control pipe installed in the longitudinal direction in each of the drill rods connected in a multi-stage line and provide the fluid pressure to the key control pipe is configured to operate the key for opening and closing Slime processing device using a ground drilling drill.
According to claim 3, wherein the drive unit is arranged to align the key control pipe installed in the longitudinal direction in each of the drill rods connected in a multi-stage line and to provide the tow rope connected to the opening and closing key through the key control pipe to be provided to the outside. Slime processing device using a ground drilling drill.
The control unit according to claim 3, wherein the driving unit installs the opening / closing key in a key operating chamber, makes the key control branch passage branched from the fluid supply passage communicate with the key operating chamber, and uses a control key of a key control box. Slime processing apparatus using a ground drilling drill, characterized in that configured to control the opening and closing of the key control branch passage.
9. The slime processing apparatus according to claim 8, wherein the key control branch passage is branched into two in the fluid supply passage so as to be in communication with both ends of the key operation chamber.
10. The slime processing apparatus according to claim 9, wherein the key control box is installed at one of the tip of the drill rod and the drill rod of the ground portion.
The slime treatment apparatus according to claim 1, wherein the radial expansion body is formed to have a donut shape as an elastic material.
The slime processing apparatus according to claim 1, wherein the radial expansion body is formed of an arc dividing block as a rigid material.
13. The slime processing apparatus according to claim 12, wherein the radial expansion body of the arc-shaped split block form is connected to a joint member.
In the slime treatment device for removing the slime generated during the drilling work of construction,
Install the slime drop prevention device near the tip of the drill rod to which the drill bit can be mounted.
The slime drop prevention device is; A plurality of radial extensions of arc-shaped dividing blocks, an actuator having a streamlined head and interposed between the radial extensions and pushing the radial extensions to radially expand, and forming a fluid pressure flow directly above the radial extensions In order to remove the remaining slime in the drill rod section after the drill drilling, the actuator is provided with a strong fluid pressure for the slime discharge to the discharge port below the drill rod and the drill bit body. Slime processing device using a ground drilling drill, characterized in that configured to operate by using the fluid pressure supplied through the extended fluid supply passage.
15. The method of claim 14, wherein both sides of the rear end of the actuator is formed on the curved inclined surface so that the streamlined actuator can be easily interlocked, and the return portion for biasing to return to the original position after expansion is characterized in that the configuration is installed Slime processing device using a ground drilling drill.
In the slime treatment device for removing the slime generated during the drilling work of construction,
The slime drop prevention device is installed near the tip of the drill rod to which the drill bit can be mounted, and the slime drop prevention tool forms a sliding slope at the end of the connecting rod engaged with the drill rod end, and the sliding slope has the weight of the ground drilling drill. Radial expansion that is radially expanded while being inclined by the slide, and slime discharge fluid pressure outlet for directly forming the fluid pressure flow for slime discharge above the radial extension, and the drill rod and the drill bit body below A fluid supply passage is formed which extends a strong fluid pressure for slime discharge to the discharge port, and discharges to the discharge port below the drill bit main body, injects into the fluid pressure chamber, and injects the slime discharge to the strong fluid pressure flowing into the fluid supply passage. In the direction of fluid flow to enable injection Slime processing device using a drill for the ground excavation, characterized in that consisting of a valve unit for controlling the change.
17. The method according to claim 16, wherein a fastener capable of providing self-weight together with the ground drilling drill is loosely formed in the lower portion of the connecting rod, and the fixing key is positioned in a key slot defining a vertical movement distance of the connecting rod. Slime processing apparatus using a ground drilling drill, characterized in that the temporary chamber and the inlet to communicate with the fluid pressure outlet for slime discharge is selectively formed by the relative movement of the fastener and the connecting rod.
In the slime treatment device for removing the slime generated during the drilling work of construction,
A slime drop prevention device is installed near the tip of the drill rod to which the drill bit can be mounted, and the slime drop prevention device is a fluid pressure pressurizing passage for applying a fluid pressure to the actuator and the actuator for operating the radial extension and the radial extension. And a slime discharge fluid pressure outlet for directly forming a fluid pressure flow above the radial extension body, and a fluid supply passage for supplying a strong fluid pressure for slime discharge to the discharge hole below the drill rod and the drill bit body. And extending the fluid pressure in the fluid supply passage to control the change in the direction of the fluid flow to enable the discharge into the lower discharge port of the drill bit body, injection into the fluid pressure pressurization passage, and injection into the fluid pressure outlet for slime discharge. Slime processing device using a ground drilling drill, characterized in that consisting of a valve unit.
In the slime treatment device for removing the slime generated during the drilling work of construction,
The slime drop prevention device is installed near the tip of the drill rod to which the drill bit can be mounted, and the slime drop prevention device has a radial expansion body and an actuator for operating the radial expansion body and a fluid pressure chamber for applying fluid pressure to the actuator. And a fluid supply passage extending from the drill rod to the discharge hole below the drill bit main body to supply a strong fluid pressure for slime discharge, and discharged to the drill bit main discharge port below the strong fluid pressure flowing into the fluid supply passage. Slime processing apparatus using a ground drilling drill, characterized in that configured as a valve unit for controlling the change of the flow direction to enable injection into the fluid pressure chamber.
In the slime treatment method for removing slime generated during the drilling work of construction,
The slime drop prevention device is installed near the tip of the drill rod, and is drilled with the ground excavation drill, and at the same time, the slime generated in the perforation part is drilled from the drilled part of the tip using the injection fluid pressure discharged under the drill bit. Discharge to the outside,
After the completion of the drilling hole is formed to extend the slime drop prevention hole located near the tip of the drill rod to be blocked from the perforated portion of the tip,
Simultaneously with the slime drop prevention block, the direction of injection fluid pressure supplied to the drill bit downward discharge port is changed in the slime drop prevention port so that a strong flow of fluid pressure upwards with the drill rod is formed directly. Slime processing method using a ground drilling drill, characterized in that the process is made to discharge the remaining remaining slime to the outside.
In the slime treatment method for removing slime generated during the drilling work of construction,
A slime drop prevention device is installed near the tip of the drill rod, and it is drilled with the ground drilling drill and discharged from the perforated part of the tip by using the injection fluid pressure discharged below the drill bit. Letting the process
Slime treatment using the ground excavation drill, which is made by expanding the slime drop prevention zone located near the tip of the drill rod after completion of the formation of the boring hole to block the perforated part of the tip and recovering the drill rod from the drill hole. Way.
In the slime treatment device for removing the slime generated during the drilling work of construction,
The slime drop prevention device is installed near the tip of the drill rod mountable drill rod, and the slime drop prevention device is a slime discharge fluid pressure outlet for directly forming a fluid pressure flow for slime discharge above the drilling hole, and It is provided with a fluid pressure pressurizing passage for applying a fluid pressure to the fluid pressure ejection outlet for slime discharge, the fluid supply passage for supplying a strong fluid pressure for slime discharge is extended to the discharge port of the drill rod and the drill bit body below the fluid supply passage Ground drilling drill, characterized in that it consists of a valve unit for controlling the change of the flow direction to enable the discharge to the lower discharge port of the drill bit body and the injection into the fluid pressure pressure passage for the strong fluid pressure flowing into the Slime processing unit.
In the slime treatment method for removing slime generated during the drilling work of construction,
A slime drop prevention device is installed near the tip of the drill rod, and it is drilled with the ground drilling drill and discharged from the perforated part of the tip by using the injection fluid pressure discharged below the drill bit. Letting the process
After completion of the drilling hole formation, the direction of the injection fluid pressure supplied to the lower side of the drill bit is changed in the slime drop prevention port located near the tip of the drill rod, so that the strong hydraulic pressure flow upwards with the drill rod is formed directly. A slime treatment method using a ground drilling drill, characterized in that the remaining slime remaining in the section is discharged to the outside and at the same time recovering the drill rod.

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