A method for reinforcing a utility pole by supplying an injectant to the inside of the utility pole for reinforcing the utility pole with a foothold bolt hole

Abstract

The present invention relates to a method for reinforcing a utility pole by supplying an injection material to the inside of the utility pole with a scaffolding bolt hole to reinforce the utility pole, and more particularly, to a method for reinforcing a utility pole by supplying an injection material to the inside of the utility pole with a scaffolding bolt hole to reinforce the utility pole, which minimizes vibration and impact received by the utility pole by expanding the diameter of only the plastic portion corresponding to the scaffolding bolt hole using a dedicated drill bit, thereby helping to improve the work speed and safety of the worker who supplies the injection material.

Description

[Technical field]

[0001] The present invention relates to a method for reinforcing a utility pole by supplying an injection material to the inside of the utility pole with a scaffolding bolt hole to reinforce the utility pole, and more particularly, to a method for reinforcing a utility pole by supplying an injection material to the inside of the utility pole with a scaffolding bolt hole to reinforce the utility pole, which minimizes vibration and impact received by the utility pole by expanding the diameter of only the plastic portion corresponding to the scaffolding bolt hole using a dedicated drill bit, thereby helping to improve the work speed and safety of the worker who supplies the injection material. [Background technology]

[0002] A utility pole is a vertical structure used to support electric wires or communication lines at a certain height above the ground. It is manufactured by arranging steel bars in a circular shape and creating a formwork in the shape of a circular cylinder. After that, concrete is poured into the pole and the circular formwork is rotated to make it hollow, i.e., with an empty space inside.

[0003] The utility poles manufactured as described above are installed by digging a hole into the ground to a certain depth, burying the lower part of the pole, usually about 2 m, and pouring concrete into it.

[0004] In addition, many accessories such as power lines, communication lines, insulators, lightning arresters, transformer primary side switches, and pole-mounted transformers are attached to the top of the utility pole.

[0005] After installation, these utility poles often fell over due to deterioration of the concrete and reduced durability caused by hollow molding, making them unable to withstand the weight of the accessories attached to the top as well as external shocks.

[0006] As described above, if a utility pole falls over while it is installed and in use, many accessories attached to the top of the pole, such as the power lines, communication lines, insulators, lightning arresters, transformer primary switchgear, and pole-mounted transformer, will be damaged, causing many problems, particularly personal injury due to high voltage current and damage due to power outages.

[0007] Specifically, with conventional, typical concrete utility poles, different workers were used depending on the location and duration of installation, and there were differences in skill levels, so even if there were no apparent problems from the outside, the insides were often not in a balanced state.

[0008] In addition, due to the characteristics of concrete, old utility poles absorb a lot of water, but depending on the environment, salt as well as water can cause the concrete and the built-in rebar to oxidize, which means there is a constant risk of damage from the external environment, impacts, or the load of additional cables.

[0009] Therefore, in order to solve the above problems, the present invention proposes a pole reinforcement method in which a threaded portion formed for fastening a scaffolding bolt is expanded by a dedicated drill bit, but only the plastic portion corresponding to the scaffolding bolt hole is expanded, thereby minimizing the vibration and impact received by the pole and helping to improve the work speed and safety of the worker who supplies the injection material, in order to reinforce a pole with a scaffolding bolt hole. Summary of the Invention [Problem to be solved by the invention]

[0010] The present invention has been devised to solve the above-mentioned problems of the prior art, and the object of the present invention is to provide a method for supplying an injection material to the inside of an electric pole to reinforce an electric pole having a scaffolding bolt hole, which minimizes vibration and impact received by the electric pole by expanding the diameter of a threaded portion formed for fastening a scaffolding bolt using a dedicated drill bit, and helps to improve the work speed and safety of a worker who supplies the injection material by expanding only the plastic portion corresponding to the scaffolding bolt hole. [Means for solving the problem]

[0011] In order to solve the above problems, a method for reinforcing a utility pole 20 having a scaffolding bolt hole 10 according to an embodiment of the present invention is to supply an injection material to the inside of the utility pole for reinforcing the utility pole 20, A grout material production step S100 in which the raw materials stored in the water storage tank and the powder storage tank are mixed and stirred using a mixer to produce a grout material; A step S200 of preparing a utility pole reinforcement means by attaching a drill bit 110 to an impact drill 100 and connecting an injection device 210 to a hose connector 200 connected to the mixer; A first nailing step S300 in which the drill bit 110 is inserted into a foothold bolt hole formed in the utility pole, and a first nailing is performed on the rear end of the closed plastic foothold bolt hole, leaving the nailed space and the drill bit as they are, thereby minimizing the impact on the utility pole that occurs during nailing; A secondary nailing step S400 for inserting the tip of the drill bit into the scaffolding bolt hole to perform secondary nailing of the plastic scaffolding bolt hole to prevent the problem of uneven distribution when inserting the wire steel wire; A waterproof layer forming step S500 in which the waterproof liquid stored in the waterproof liquid storage tank is supplied through the scaffolding bolt hole where the secondary nailing has been performed, and then hardened to form a waterproof layer 300 on the inner surface of the utility pole; A steel wire insertion step S600 of inserting a plurality of steel wires 400 into the inside of the utility pole through the scaffolding bolt hole where the secondary nailing has been performed; and a pole interior reinforcement step S700 of connecting an injection device 210 to a hose connector 200 connected to the mixer, supplying grout material through the footing bolt holes of the pole, and then curing the grout material to form a reinforcing layer 500 inside the pole. Effect of the Invention

[0012] According to the pole reinforcing method of the present invention for supplying an injection material to the inside of a pole having a scaffolding bolt hole to reinforce the pole, the threaded portion formed for fastening the scaffolding bolt is expanded by a dedicated drill bit. However, by expanding only the plastic portion corresponding to the scaffolding bolt hole, the vibration and impact received by the pole is minimized, which helps to improve the work speed and safety of the worker supplying the injection material.

[0013] That is, according to the present invention, the following effects can be obtained: the wire steel wire to be inserted can be artificially adjusted so as to be inserted uniformly; the clogging phenomenon during injection can be prevented by blending a specially manufactured polypropylene fiber reinforcement agent into the grout material; the impact on an aging utility pole can be minimized when the scaffolding bolt hole is enlarged by nailing; the travel path of the grout material to be injected can be shortened and an enlarged injection port can be provided for easy fastening; and the strength can be improved. [Brief description of the drawings]

[0014] [Figure 1] 1 is a photograph showing a wire steel wire inserted into a conventional utility pole according to an embodiment of the present invention, which is a method for reinforcing a utility pole by supplying an injection material into the interior of the utility pole to reinforce the utility pole having a foothold bolt hole according to the present invention. [Diagram 2] FIG. 1 is a cross-sectional view showing the distribution of wire steel wires after they have been inserted into a conventional utility pole according to a utility pole reinforcing method for supplying an injection material into the interior of the utility pole to reinforce the utility pole having a scaffolding bolt hole according to an embodiment of the present invention. [Diagram 3] FIG. 2 is a process diagram showing a method for reinforcing a utility pole by supplying an injection material to the inside of the utility pole to reinforce the utility pole having a footing bolt hole according to an embodiment of the present invention. [Figure 4] 1 is an exemplary view showing a plastic footing bolt hole in a utility pole reinforcing method for supplying an injection material into the interior of a utility pole to reinforce the utility pole having the footing bolt hole according to an embodiment of the present invention; FIG. [Diagram 5] FIG. 1 is an exemplary diagram showing a first nailing step S300 and a second nailing step S400 in a utility pole reinforcing method for supplying an injection material into the interior of a utility pole to reinforce the utility pole having a scaffolding bolt hole according to one embodiment of the present invention. [Figure 6] FIG. 1 is an exemplary diagram showing a special drill bit used in a pole reinforcement method for supplying an injection material to the inside of a pole for reinforcement of a pole with a foothold bolt hole according to an embodiment of the present invention. [Figure 7]FIG. 1 is an example diagram showing a dedicated hose connector and injection device used in a pole reinforcement method for supplying an injection material to the inside of a pole for reinforcement of a pole with a foothold bolt hole according to one embodiment of the present invention. [Figure 8] FIG. 13 is an illustrative diagram showing an example of grout supply using a dedicated hose connector and an injection device used in a utility pole reinforcing method for supplying an injection material to the inside of a utility pole for reinforcing a utility pole with a footing bolt hole according to one embodiment of the present invention. [Figure 9] FIG. 1 is an illustrative diagram showing a waterproof layer 300, a wire steel wire 400, and a reinforcing layer 500 formed by a utility pole reinforcing method for supplying an injection material to the inside of a utility pole for reinforcing a utility pole with a scaffolding bolt hole according to one embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] The following is an example of the principles of the present invention, which will enable those skilled in the art to embody the principles of the present invention and realize various apparatuses that fall within the concept and scope of the present invention, even if not explicitly described or shown in the specification.

[0016] Furthermore, it should be understood that all conditional terms and examples shown in this specification are intended to aid in the understanding of the concept of the present invention in principle, and the present invention is not limited to such examples and forms.

[0017] According to one embodiment of the present invention, a method for reinforcing a utility pole 20 having a footing bolt hole 10 by supplying an injection material to the inside of the utility pole is as follows: A grout material production step S100 in which the raw materials stored in the water storage tank and the powder storage tank are mixed and stirred using a mixer to produce a grout material; A step S200 of preparing a utility pole reinforcement means by attaching a drill bit 110 to an impact drill 100 and connecting an injection device 210 to a hose connector 200 connected to the mixer; A first nailing step S300 in which the drill bit 110 is inserted into a foothold bolt hole formed in the utility pole, and a first nailing is performed on the rear end of the closed plastic foothold bolt hole, leaving the nailed space and the drill bit as they are, thereby minimizing the impact on the utility pole that occurs during nailing; A secondary nailing step S400 for inserting the tip of the drill bit into the scaffolding bolt hole to perform secondary nailing of the plastic scaffolding bolt hole to prevent the problem of uneven distribution when inserting the wire steel wire; A waterproof layer forming step S500 in which the waterproof liquid stored in the waterproof liquid storage tank is supplied through the scaffolding bolt hole where the secondary nailing has been performed, and then hardened to form a waterproof layer 300 on the inner surface of the utility pole; A steel wire insertion step S600 of inserting a plurality of steel wires 400 into the inside of the utility pole through the scaffolding bolt hole where the secondary nailing has been performed; A pole interior reinforcement step S700 of connecting an injection device 210 to a hose connector 200 connected to the mixer, supplying grout material through a foothold bolt hole of the pole, and then curing the grout material to form a reinforcement layer 500 inside the pole; The present invention is characterized by comprising:

[0018] In this case, the grout material contains 100 parts by weight of grout material and 0.03 to 0.08 parts by weight of a polypropylene fiber reinforcing agent relative to 100 parts by weight of the grout material, and is characterized in that the particle size of the aggregate is 2 mm or less.

[0019] At this time, the drill bit 110 is used to enlarge the scaffolding bolt hole while minimizing the impact on the utility pole, and the grout material contains a polypropylene fiber reinforcing agent, and by injecting this into the interior of the utility pole, the strength of the grout material is increased and clogging when the grout material is injected can be prevented.

[0020] In this case, the drill bit 110 is characterized in that it has a two-stage configuration, including a first nail driving portion 111 having a certain diameter, and a second nail driving portion 112 connected to the first nail driving portion and formed with a diameter larger than that of the first nail driving portion, and for example, when the outer diameter of the scaffolding bolt hole is 22 mm, the first nail driving portion has a diameter of less than 20 mm, and the second nail driving portion has a diameter of 20 mm to 21 mm.

[0021] At this time, the hose connector 200 connected to the mixer is characterized by including a mixer coupling part 205 coupled to an end of the mixer, and an injection device coupling part 207 into which a coupling protrusion formed on one side of an injection device is inserted and fixed to one side of the mixer coupling part.

[0022] At this time, the injection device 210 is characterized by including a coupling protrusion 215 formed on one side to be coupled to the injection device coupling part 207, and a grout injection part 220 connected to the coupling protrusion for injecting the grout material supplied from the mixer into the scaffolding bolt hole.

[0023] At this time, the waterproofing liquid is provided as a liquid epoxy to strengthen the adhesive force between the deteriorated utility pole and the injection material, and is applied in this form.

[0024] Hereinafter, a method for reinforcing a utility pole having a footing bolt hole according to the present invention, in which an injection material is supplied to the inside of the utility pole to reinforce the utility pole, will be described in detail with reference to examples.

[0025] FIG. 3 is a process diagram showing a method for reinforcing a utility pole by supplying an injection material into the interior of the utility pole to reinforce the utility pole having a footing bolt hole according to an embodiment of the present invention.

[0026] As shown in FIG. 3, the method for reinforcing a utility pole 20 having a footing bolt hole 10 according to the present invention includes supplying an injection material to the inside of the utility pole, A grout material production step S100 in which the raw materials stored in the water storage tank and the powder storage tank are mixed and stirred using a mixer to produce a grout material; A step S200 of preparing a utility pole reinforcement means by attaching a drill bit 110 to an impact drill 100 and connecting an injection device 210 to a hose connector 200 connected to the mixer; A first nailing step S300 in which the drill bit 110 is inserted into a foothold bolt hole formed in the utility pole, and a first nailing is performed on the rear end of the closed plastic foothold bolt hole, leaving the nailed space and the drill bit as they are, thereby minimizing the impact on the utility pole that occurs during nailing; A secondary nailing step S400 for inserting the tip of the drill bit into the scaffolding bolt hole to perform secondary nailing of the plastic scaffolding bolt hole to prevent the problem of uneven distribution when inserting the wire steel wire; A waterproof layer forming step S500 in which the waterproof liquid stored in the waterproof liquid storage tank is supplied through the scaffolding bolt hole where the secondary nailing has been performed, and then the waterproof liquid is hardened to form a waterproof layer 300 on the inner surface of the utility pole; A steel wire insertion step S600 of inserting a plurality of steel wires 400 into the inside of the utility pole through the scaffolding bolt hole where the secondary nailing has been performed; A pole interior reinforcement step S700 of connecting an injection device 210 to a hose connector 200 connected to the mixer, supplying grout material through a foothold bolt hole of the pole, and then curing the grout material to form a reinforcement layer 500 inside the pole; The present invention is characterized by comprising:

[0027] The present description will now be explained in detail with reference to the accompanying drawings.

[0028] 1.Grout material manufacturing step S100 The grout preparation step S100 is a process of preparing grout by mixing and stirring the raw materials stored in the water storage tank and the powder storage tank using a mixer.

[0029] The powder storage tank may be composed of a plurality of tanks, each of which may store cement, sand, gravel, admixture, etc.

[0030] The raw material stored in the powder storage tank may be supplied to the mixer manually using a shovel or through piping made of a flexible material and equipped with clamps on the piping so that it can be assembled and disassembled.

[0031] For supply through piping, a transport means (not shown) such as a pump, a screw conveyor, or the like may be provided for transporting the raw material along the piping.

[0032] The mixer is configured to mix and stir the ingredients stored in the water storage tank and the powder storage tank.

[0033] Such a mixer is provided with an agitating shaft and an agitating blade inside, and a motor is attached to the agitating shaft. The raw materials are mixed and agitated by driving the motor.

[0034] Furthermore, as described above, the mixer may be connected to a water storage tank and a powder storage tank via piping so that appropriate amounts of raw materials are directly supplied to the mixer.

[0035] In this case, preferably, the grout material contains 100 parts by weight of grout material and 0.03 to 0.08 parts by weight of a polypropylene fiber reinforcing agent relative to 100 parts by weight of the grout material, and the particle size of the aggregate is 2 mm or less.

[0036] Regarding the composition of the grout material, a commercially available known reinforcing grout material may be used, but since the scaffolding bolt holes are utilized, it is preferable to use crushed aggregate with a particle size of 2 mm or less.

[0037] In addition, in order to prevent water evaporation from the grout material as much as possible and to increase the adhesive strength between the aged cement and the cement to be injected, polypropylene fiber reinforcement may be mixed in the range of 0.03 to 0.08 parts by weight per 100 parts by weight of the grout material, thereby improving the elastic modulus and bending strength of the grout material to be injected.

[0038] 2. Step S200: Preparing utility pole reinforcement means The utility pole reinforcing means preparation step S200 is a process of attaching a drill bit 110 to an impact drill 100 and connecting an injection device 210 to a hose connector 200 connected to the mixer.

[0039] Specifically, as shown in FIG. 6, the drill bit 110 is characterized by being configured in two stages and including a first nail driving portion 111 having a certain diameter, and a second nail driving portion 112 connected to the first nail driving portion and formed with a diameter larger than that of the first nail driving portion.

[0040] In this case, preferably, when the outer diameter of the scaffolding bolt hole is 22 mm, the first nailing portion has a diameter of less than 20 mm, and the second nailing portion has a diameter of 20 mm to 21 mm.

[0041] For example, in the conventional method of reinforcing aged utility poles using scaffolding bolt holes, only the plugged portion inside the scaffolding bolt hole 50 with an inner diameter of 16 mm is nailed and inserted, but it was confirmed by endoscopic photography and cutting of the utility pole during the insertion process that clogging occurs and the soft steel wire is bent and distributed unevenly. To compensate for this, in the present invention, a scaffolding bolt hole with an outer diameter of 22 mm is primarily nailed at the blocked portion at the rear side with a special drill bit, and together with the nailed space, the impact on the utility pole is minimized, and secondarily, only the plastic portion of the scaffolding bolt hole is expanded to 20 mm in diameter, which has the advantage that the soft steel wire can be inserted while maintaining the same shape as before insertion.

[0042] As shown in FIG. 7, the hose connector 200 connected to the mixer is characterized by including a mixer coupling part 205 that is coupled to an end of the mixer, and an injection device coupling part 207 into which a coupling protrusion formed on one side of an injection device is inserted and fixed to one side of the mixer coupling part.

[0043] Specifically, a mixer coupling part 205 is provided and coupled to an end of the mixer, and an injection device coupling part 207 is formed on one side of the mixer coupling part, into which a coupling protrusion formed on one side of the injection device is inserted and fixed.

[0044] At this time, the injection device 210 includes a coupling protrusion 215 formed on one side to be coupled to the injection device coupling part 207, and a grout injection part 220 connected to the coupling protrusion for injecting the grout material supplied from the mixer into the scaffolding bolt hole.

[0045] That is, a connecting protrusion 215 is provided and connected to the injection device connecting portion 207, and as shown in FIG. 8, a grout material injection portion 220 is connected to the connecting protrusion, so that the grout material supplied from the mixer is injected into the footing bolt hole.

[0046] 3. First nailing step S300 The first nailing step S300 is a process of inserting a drill bit 110 into a foothold bolt hole formed in the utility pole, performing a first nailing at the closed rear end of the plastic foothold bolt hole, and leaving the nailed space and the drill bit as they are, thereby minimizing the impact on the utility pole that occurs during nailing.

[0047] As shown in FIG. 5, a drill bit 110 is inserted into a foothold bolt hole 50 formed in the utility pole, and a primary nail is performed on the blocked rear end of the plastic foothold bolt hole.

[0048] At this time, as shown in the figure, the nailed space and the drill bit are left as they are, and the impact on the utility pole that occurs when the nail is driven in can be minimized.

[0049] 4. Secondary nailing step S400 The secondary nailing step S400 is a process of inserting the tip of a drill bit into the scaffolding bolt hole to perform secondary nailing of the plastic scaffolding bolt hole, thereby preventing the problem of uneven distribution when inserting the wire steel wire.

[0050] As shown in Figure 5, the tip of the drill bit can be inserted into the scaffolding bolt hole to perform secondary nailing of the plastic scaffolding bolt hole, which can prevent the problem of uneven distribution when inserting the wire steel wire.

[0051] 5. Waterproof layer formation step S500 The waterproof layer forming step S500 is a process of supplying waterproof liquid stored in a waterproof liquid storage tank through the scaffolding bolt holes where the second nailing has been performed, and then hardening the liquid to form a waterproof layer 300 on the inner surface of the utility pole.

[0052] At this time, the waterproofing liquid is provided as a liquid epoxy and applied in this manner in order to strengthen the adhesive force between the deteriorated utility pole and the object to be injected.

[0053] Furthermore, when constructing the waterproof layer 300, if necessary (depending on the viscosity of the waterproof liquid, the degree of hardening of the waterproof liquid, and the amount of excess waterproof liquid added), the scaffolding bolts at the bottom of the pole can be removed and any remaining waterproof liquid other than that adhering to the inner wall surface of the pole can be drained to the outside through the scaffolding bolt holes.

[0054] FIG. 9 shows a state in which the waterproof layer 300 is formed on the inner peripheral surface of the utility pole before the steel wire 400 is inserted.

[0055] 6.Steel wire insertion step S600 The steel wire inserting step S600 is a process of inserting a plurality of steel wires 400 into the inside of the utility pole through the scaffolding bolt holes through which the secondary nailing has been performed.

[0056] At this time, the wire steel line 400 may be inserted through a scaffolding bolt hole filled with grout material, or through an upper scaffolding bolt hole.

[0057] By inserting the wire steel wire 400, the shear reinforcement capacity is further improved, and an insertion nozzle may be used when inserting the wire steel wire.

[0058] That is, when the supply of the waterproofing liquid by the commonly used insertion nozzle is completed, the nozzle clamp is loosened to separate the supply hose from the insertion nozzle, and then the wire steel wire is pushed into the large inlet of the insertion nozzle, so that the steel wire is inserted into the inside of the utility pole through the funnel-shaped insertion nozzle, and the wire steel wire 400 is easily inserted.

[0059] 7. Electric pole internal reinforcement step S700 The above-mentioned utility pole interior reinforcement step S700 is a process of connecting an injection device 210 to a hose connector 200 connected to a mixer, supplying grout material through the footing bolt holes of the utility pole, and then curing the material to form a reinforcing layer 500 inside the utility pole.

[0060] For example, as shown in FIG. 8, an injection device 210 is coupled to a hose connector 200 connected to a mixer, and then the injection device 210 is inserted into a footing bolt hole of a utility pole to supply the grout material.

[0061] Next, after a curing process, a reinforcing layer as shown in Figure 9 is formed inside the utility pole.

[0062] In short, in the present invention, the drill bit 110 is used to enlarge the scaffolding bolt hole while minimizing the impact on the utility pole, and the grout material contains polypropylene fiber reinforcement, and it has been confirmed that by injecting this into the interior of the utility pole, a grout material is obtained that has higher performance in various strength measurements than existing grout materials.

[0063] Another advantage of carrying out the above process is that one one-ton truck can carry out the reinforcement work for approximately 30 deteriorated utility poles.

[0064] According to the present invention, the threaded portion formed for fastening the scaffolding bolt is expanded by a special drill bit, but by expanding only the plastic portion corresponding to the scaffolding bolt hole, the vibration and impact received by the utility pole is minimized, which helps to improve the work speed and safety of the worker who supplies the injection material.

[0065] It will be understood by those skilled in the art to which the present invention pertains that various modifications can be made without departing from the technical spirit and characteristics of the present invention. Therefore, it should be understood that the above-mentioned embodiments are merely illustrative of the present invention and are not limiting.

[0066] The scope of the present invention is indicated by the appended claims rather than the above detailed description, and all modifications and variations that come within the meaning and scope of the claims and their equivalent concepts should be construed as being included within the scope of the present invention.

Claims

1. A method for reinforcing a utility pole 20 having a footing bolt hole 10, comprising the steps of: supplying an injection material to the inside of the utility pole for reinforcing the utility pole 20; A grout material production step S100 in which the raw materials stored in the water storage tank and the powder storage tank are mixed and stirred using a mixer to produce a grout material; A step S200 of preparing a utility pole reinforcement means by attaching a drill bit 110 to an impact drill 100 and connecting an injection device 210 to a hose connector 200 connected to the mixer; A primary nailing step S300 in which the drill bit 110 is inserted into a foothold bolt hole formed in the utility pole, and a primary nailing is performed on the rear end of the plastic foothold bolt hole that is closed, leaving the nailed space and the drill bit as they are, thereby minimizing the impact on the utility pole that occurs during nailing; A secondary nailing step S400 is performed by inserting the tip of the drill bit into the scaffolding bolt hole to perform secondary nailing of the plastic scaffolding bolt hole, to prevent the problem of uneven distribution when inserting the wire steel wire; A waterproof layer forming step S500 in which the waterproof liquid stored in the waterproof liquid storage tank is supplied through the scaffolding bolt hole where the secondary nailing has been performed, and then hardened to form a waterproof layer 300 on the inner surface of the utility pole; A steel wire insertion step (S600) of inserting a plurality of steel wires 400 into the inside of the utility pole through the scaffolding bolt hole where the secondary nailing has been performed; A pole interior reinforcement step S700 of connecting an injection device 210 to a hose connector 200 connected to the mixer, supplying grout material through a foothold bolt hole of the pole, and curing the grout material to form a reinforcing layer 500 inside the pole; A method for reinforcing a utility pole including: providing an injection material to an interior of the utility pole for reinforcing the utility pole with a footing bolt hole, the method comprising:

2. 2. The method for reinforcing a utility pole having a scaffolding bolt hole as described in claim 1, characterized in that the drill bit 110 is used to expand the diameter of the scaffolding bolt hole while minimizing impact on the utility pole, and the grout material contains a polypropylene fiber reinforcing agent, which is injected into the interior of the utility pole to increase strength and prevent clogging.

3. The hose connector 200 connected to the mixer is A mixer coupling portion 205 coupled to the tip of the mixer; an injection device coupling part 207 for inserting and fixing a coupling protrusion formed on one side of an injection device to one side of the mixer coupling part; A method for reinforcing a utility pole having the footing bolt hole according to claim 1, comprising: supplying an injection material to the inside of the utility pole for reinforcing the utility pole.

4. The injection device 210 includes: a coupling protrusion 215 formed on one side to be coupled to the injection device coupling portion 207; A grout injection section 220 connected to the coupling protrusion for injecting grout material supplied from a mixer into the footing bolt hole; A method for reinforcing a utility pole having a footing bolt hole according to claim 3, comprising the steps of: supplying an injection material to the inside of the utility pole for reinforcing the utility pole.

5. The method for supplying an injection material to the inside of a utility pole for reinforcing the utility pole having a footing bolt hole according to claim 1, characterized in that the waterproofing liquid is provided as a liquid epoxy and applied in this manner to strengthen the adhesive force between the aged utility pole and the injection material.

6. The method for reinforcing a utility pole having a scaffolding bolt hole according to claim 1, characterized in that the wire steel wire 400 is inserted into the scaffolding bolt hole filled with grout material or into the scaffolding bolt hole above the scaffolding bolt hole.

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