KR101085362B1 - Reamering method by using reamer for horizontal directional drilling - Google Patents

Abstract

Disclosed are a directional horizontal drilling rig expansion machine and an expansion method using the same. According to one embodiment of the invention, the driving rod connected to the excavating equipment is connected to the front end is provided with a conical head for receiving rotational force, is formed to protrude a plurality of tips on the front of the head, from the head to the rear The expansion body is formed of a straight body of cylindrical shape, and a plurality of mounted in the inside of the expansion air, each of the hitting head for the forward and backward reciprocating movement through the through hole formed in each of the plurality of periphery around the center of rotation at the head And a mud pump operated by a mixture of water and bentonite supplied from a driving rod, and providing a pumping force to drive the hammer.
According to the present invention, as well as the general soil layer, so that the rock layer or amber stone is easily broken and broken so that the expansion speed is fast to make the work of the pipeline construction quickly, and the operation of the hammer to break the rock layer or stone layer or amber stone, etc. By using a mud pump using the pressure of the and bentonite, it is possible to avoid the need of a separate power supply device for driving the hammer, thereby simplifying the equipment necessary for the operation of the air blower, and increasing the convenience of operation. It has the advantage of reducing time and cost.

Description

Expansion method using expansion machine for oriented horizontal excavation construction {REAMERING METHOD BY USING REAMER FOR HORIZONTAL DIRECTIONAL DRILLING}

The present invention relates to expansion of an excavation hole, and more particularly, to an expansion method using a directional horizontal excavation hole expansion machine.

In general, when installing various pipelines such as water pipes, gas pipes, and the like, first, the ground is excavated to form an underground track, and an unattached oriented horizontal excavation method is used in which underground pipes are inserted and embedded.

Conventional directional horizontal excavation method by drilling a small diameter drill header to the front to drill a pipeline, by drilling a mixture of water and bentonite in a high pressure direction through a nozzle formed in the drill header to drill small diameter excavation Allow the ball to dig.

The equipment used in this directional horizontal excavation method consists of a self-engine, excavation track, rod mounting and demounting device, the main equipment is connected to the length required for the rod, and the excavation and expansion at the outer end of the rod The drill header and expander are each selectively connected, providing torque and propulsion from the main machine.

The drill header is an excavation tool connected to the tip of the rotating drive rod, and a bit with a plurality of tips is installed on the front, and it is excavated while rotating to excavate a water caliber pipe, and a mixture of high-pressure water and bentonite is sprayed simultaneously. To increase the digging force.

The expansion machine is connected to the tip of the driving rod by replacing the drill header, and is a tool for expanding the pipe while driving backwards, and has a conical body with a sharp shear, and consists of a rotary propellant equipped with a plurality of tips on the front.

As described above, when the small-diameter pipe hole is excavated by the small-diameter drill header, the directional horizontal excavation method separates the drill header from the end of the driving rod drawn out to the opposite side, and connects the expander to the driving rod instead of the drill header. By pulling, the retractor with the rotational force is reversed while expanding the small diameter conduit, and the retractor is hung by pulling the pipes together or inserting the pipes separately after the expansion.

Referring to the expansion method according to the conventional air expansion with reference to the accompanying drawings as follows.

1 is a view showing a method for expanding by air according to the prior art.

As shown in FIG. 1, the conventional air expander 1 is formed in a conical shape, and a plurality of tips are mounted on the front surface thereof, and a hole is drilled into the small diameter drilling hole A while rotating by the driving rod 2. Excavate to expand into large diameter expansion hole (B).

However, since the conventional air expander 1 is simply provided with a plurality of tips in the head, it is easy to expand the general soil excavation hole. However, in the process of progress, the rock layer, the stone layer or the amber mixed with these tips are only rock layers. Work is not easy because it does not have the ability to propel it, which has the problem of increasing air and cost.

In addition, the conventional air expander (1) is made of a conical shape has an inclined shape as a whole to flow in the excavation hole (A). That is, when the air expander 1 moves along a curved path along the excavation hole A, the overall shape of the air expander 1 has a problem that the tip is lifted or tilted to flow by having a conical inclined shape. there was. Therefore, it is easy to lift the head toward the pull in the curved excavation hole to leave the track, so that the course of the excavation hole is changed, and the work is delayed.

In addition, the conventional expansion machine (1) is easy to widen the small diameter because the body is short, except for the conical shape, but the compaction force of the widened excavation hole is weak, and the rear expansion hole is passed through the expansion machine (1) There was a problem that would cause collapse.

In order to solve the conventional problems as described above, the present invention provides a method of expansion using a directional horizontal excavation air blower that can be pushed while meeting them, as well as soil layers, rock layers, stone layers and amber stones, etc. I would suggest.

In addition, the present invention to solve the shortcomings of the change of the track by improving the construction equipment to perform a quick and accurate expansion work to improve the work efficiency, reduce the risk of collapse of the expansion hole passed through the expansion, and to form a solid expansion hole It is to propose an expansion method using a directional horizontal excavation air expansion.

In addition, the present invention does not require a separate power supply device for driving the hammer by using the pressure of water and bentonite to drive the hammer to break the rock layer, stone bed or amber stone, etc. It is to propose a expansion method using a directional horizontal drilling rig expansion machine to simplify the operation, increase the convenience of operation and reduce the work time and cost.

Still other objects of the present invention will be readily understood through the following description of the embodiments.

In order to achieve the object as described above, according to an aspect of the present invention, in the directional horizontal excavation expansion method, the step of inserting the driving rod connected to the excavating equipment to the excavation hole to reach the beginning of the expansion hole and And connecting the end of the driving rod exposed from the start hole to a conical head formed at the front end of the straight body of the air expander, pulling the rotating driving rod by driving the excavating equipment, and pulling the driving rod. By supplying a mixture of water and bentonite to the mud pump installed in the air expander over a predetermined pressure through the mud pump to drive a plurality of hammers installed in the air expander, the front of the head by the drive of the hammer Hitting the ground in front of the hammer by reciprocating forward and backward of each of the hammering heads exposed to , The tip protruding from the front surface of the head portion is directed expression Horizontal drilling hole expandability method comprising the step of expanding the drilling hole is provided by producing a friction in the forward ground.

Expanding the drilling hole may cause a portion of the mixture of water and bentonite to be sprayed forward of the striking head.

The hammer is formed so that the tip of the hitting head has the same inclined surface as the inclination of the head portion, it may be installed at equal intervals along the circumference of the center of rotation in the air expander.

According to the expansion method using the directional horizontal excavation hole expansion machine according to the present invention, the hammer is installed in the front of the blasting machine to be continuously made by the strong vibration shock and the impact action, and further, the water in the exposed hole of the impact head And by continuously spraying the bentonite forward, it is easy to break and crack rock layers or amber stones, as well as general soil layers, the expansion speed is fast progressed has the advantage that the work of pipeline construction is made quickly.

In addition, according to the expansion method using the directional horizontal excavation hole expansion machine according to the present invention, the portion of the expansion hole except for the conical shape is long so that the conduit is expanded so as not to collapse to form a solid earth pipe, the flow of the expansion air By suppressing and moving along the excavation hole without changing the track or leaving phenomenon has the advantage to perform the set-up expansion work quickly and accurately.

In addition, according to the expansion method using a directional horizontal excavation hole expansion machine according to the present invention, the operation of the hammer by using a mud pump using the pressure of water and bentonite to drive the hammer for breaking a rock layer, a stone layer or amber stone It does not require a separate power supply device for this, thereby simplifying the equipment required for the operation of the air expander, and has the advantage of reducing operation time and costs while increasing the convenience of operation.

1 is a view for explaining the expansion method by the expansion machine according to the prior art,
Figure 2 is a perspective view showing a directional horizontal drilling rig expansion machine according to the present invention,
Figure 3 is a cross-sectional view showing a directional horizontal drilling rig expansion machine according to the present invention,
Figure 4 is a front view showing a directional horizontal drilling rig expansion machine according to the present invention,
5 is a flowchart illustrating a directional horizontal excavation expansion method according to the present invention,
6 is a view for explaining a directed horizontal excavation expansion method according to the present invention.

As the inventive concept allows for various changes and numerous embodiments, particular embodiments will be illustrated in the drawings and described in detail in the written description. However, this is not intended to limit the present invention to specific embodiments, it should be understood in a way that includes all changes, equivalents, and substitutes included in the spirit and scope of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings, and the same or corresponding components will be given the same reference numerals regardless of the reference numerals, and redundant description thereof will be omitted.

Figure 2 is a perspective view showing a directional horizontal drilling dilator according to the invention, Figure 3 is a cross-sectional view showing a directional horizontal drilling rig expansion in accordance with the present invention.

As shown in Figures 2 and 3, the directional horizontal drilling rig expansion machine 100 according to the present invention is installed in the dilator 120 and the dilator 120, the drive rod 110 is connected to the tip It may include a hammer 130 and a mud pump (140) for driving the hammer 130.

The air expander 120 is provided with a conical head 121 for receiving rotational force by being connected to the tip of the driving rod 110 connected to the excavating equipment, a plurality of tips 122 on the front of the head 121 It is formed to protrude, and the cylindrical straight body 124 toward the rear from the head 121 forms an integral. Here, the tip 122 may be formed to form a plurality of rows in the longitudinal direction on the front of the head 121. In addition, the linear body 124 is molded while compacting the expansion hole expanded by the head 121 so that the expansion hole does not collapse, and has a straight length to some extent to be in close contact with the inner wall surface of the expansion hole head 121 Of course, while preventing the flow of the air expander 120, to eliminate the fear of changing the trajectory.

The hammer 130 is mounted to the inside of the air expander 120, a plurality of through-holes 123, each of which hits the head 131 reciprocating back and forth is formed around the center of rotation in the head 121 It is installed to face forward through each, and the inside of the body 132 is isolated by the reciprocating piston 133 has a space that is isolated on both sides, the fluid for operation is supplied to one space, the other space The striking head 131 is installed to reciprocate.

As shown in FIG. 4, the hammer 130 is formed such that the tip of the striking head 131 has the same inclined surface as the inclination of the head 121, and the same along the circumference of the center of rotation in the air compressor 120. It can be installed at intervals, as well as four are installed as in this embodiment, the number can vary depending on the diameter of the excavation hole or the composition and hardness of the ground. Here, the striking head 131 may be formed in a flat plate shape or a pointed nail shape like an ax blade in order to increase the efficiency and ease of striking. As such, by forming the inclined surface of the striking head 131, it is possible to have a striking effect while reducing the interference with the dilating surface during the rotation of the dilator 120.

The mud pump 140 is operated by a mixture of water and bentonite supplied from the driving rod 110 and provides a pumping force to drive the hammer 130. That is, the mud pump 140 operates by using a mixture of water and bentonite as a working fluid to generate a pumping force. The mixture is supplied and provides sufficient pumping force through the supply line 141 to reciprocate the piston 133 of the hammer 130. In addition, the mud pump 140 may use its own working fluid supplied with the fluid for directly operating the hammer 130 from the driving rod 110 as well as different oils or compressed air, and the like. It may have a chamber.

The mud pump 140 may be provided with a distribution unit 142 to provide a pumping force through the supply line 141 to each of the body 132 of the hammer 130 made of a plurality.

The directional horizontal drilling rig expansion apparatus 100 according to the present invention may have a distribution module 112 and a discharge hole 134 to inject a mixture of water and bentonite forward from the driving rod 110.

The distribution module 112 is installed in the supply pipe 111 for supplying the mixture from the driving rod 110 to the mud pump 140, the body of each of the hammer 130 through the distribution tube 113, the mixture of water and bentonite To (132). Here, the distribution pipe 113 is connected to supply the mixture to the space in which the striking head 131 is located in the space inside the body 132 of the hammer 130.

The discharge hole 134 is formed in the striking head 131 to inject a mixture of water and bentonite forward from the distribution module 112 through the distribution pipe 113, and in the striking head 131 as in this embodiment It may be formed in a plurality, the supply from the distribution pipe 113 is directly supplied to the discharge hole 134, or the mixture supplied from the distribution pipe 113, as in this embodiment supply to the striking head 131 It may be supplied to be distributed to the plurality of discharge holes 134 through the flow path (135).

On the other hand, the rotation of the drive rod 110 and the mixture supply is controlled by an external control device.

5 is a flowchart illustrating a directional horizontal excavation expansion method according to the present invention, Figure 6 is a view for explaining a directional horizontal excavation expansion method according to the present invention.

As shown in Figures 5 and 6, the directional horizontal excavation expansion method according to the present invention is a drive rod insertion step (S11), air connection step (S12), drive rod rotation and drawing step (S13) and It may include an expansion step (S14) by the mud pump driving.

According to the driving rod insertion step (S11), by inserting the driving rod 110 connected to the excavating equipment into the excavation hole (A), the opening of the expansion hole (B), that is, the expansion hole (B) in the excavation hole (A) Reach the starting point.

According to the expansion air connection step (S12), the end of the driving rod 110 exposed from the start port is connected to the conical head portion 121 formed at the front end of the straight body 124 of the air expansion 120.

According to the driving rod rotation and drawing step (S13), while expanding the driving air 110 by driving the drilling equipment pulls the air 120.

According to the expansion step (S14) by the mud pump driving, the mixture of water and bentonite through the driving rod 110 before or after the driving rod rotation and drawing step (S13) or the process of the inside of the expansion air 120 above a predetermined pressure By supplying it to the mud pump 140 is installed in the working fluid as the mud pump 140 is driven by a pumping force of the hammer 130 installed in the air expander 120, by the drive of the hammer 130 A tip 122 is formed on the front surface of the head 121 while hitting the front ground by reciprocating back and forth the striking head 131 of each of the hammers 130 exposed from the head 121 forward and backward. The expansion hole B is formed by expanding the excavation hole A by causing friction with the ground in front by the rotation of the expansion air 120.

On the other hand, in the expansion step (S14) by the drive of the mud pump, a portion of the mixture of water and bentonite is supplied to the body 132 of the hammer 130 by the distribution module 112 and the distribution pipe 113 is supplied ( Through the 135 and the discharge hole 134 to be injected to the front of the hitting head 131, it can be to increase the drilling force.

Preferred embodiments of the present invention described above are disclosed for purposes of illustration, and those skilled in the art will be able to make various modifications, changes, and additions within the spirit and scope of the present invention. Additions should be considered to be within the scope of the following claims.

110: drive rod 111: supply pipe
112: distribution module 113: distribution pipe
120: air expansion 121: head
122: tip 123: through hole
124: straight body 130: hammer
131: hitting head 132: body
133: piston 134: discharge hole
135: supply path 140: mud pump
141: supply line 142: distribution unit

Claims (3)

In the directed horizontal excavation expansion method,
Inserting a driving rod connected to the drilling rig into an excavation hole to reach a start hole of the expansion hole;
Connecting an end of the driving rod exposed from the start hole to a conical head formed at a front end of a straight body of the air expander;
Pulling while rotating the driving rod by driving the drilling equipment; And
By supplying a mixture of water and bentonite through the drive rod to a mud pump installed in the air expander to a predetermined pressure or more, a portion of the water and the bentonite mixture is formed in front of the blow head formed around the center of rotation of the head portion The mud pump drives a plurality of hammers installed in the air expander, and strikes the ground in front of each other by reciprocating back and forth the striking heads of the hammers that are exposed forward from the head by the hammer. In addition, the tip protruding on the front surface of the head causes friction on the ground of the front to expand the excavation hole; Directed horizontal digging expansion method comprising a.
delete The method of claim 1, wherein the hammer,
The front end of the striking head is formed to have the same inclined surface as the inclination of the head portion, the directional horizontal excavation expansion method characterized in that it is installed at equal intervals along the circumference of the center of rotation in the air expander.

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