WO2010079888A2 - Excavator for laying ground electrode, and apparatus and method for reducing ground resistance including the same - Google Patents

Abstract

The present invention relates to an excavator for laying ground electrodes, and an apparatus and method for reducing ground resistance including the same, and, more particularly, to an excavator which can insert a rod-shaped electrode stably without damage by embedding the electrode in a second hollow portion inside a screw of the excavator which reduces ground resistance by using a ground resistance reducing material as a filling surrounding the space around the electrode and injecting the ground resistance reducing material without forming internal voids, and an apparatus and method for reducing ground resistance including the same. In more detail, the excavator for laying the ground electrode, and the apparatus and method for reducing ground resistance including the same of the present invention can remove internal voids in the underground space in which the ground electrode is installed (or embedded), prevent mixing-in of foreign substances, and thus improve the efficiency of reducing ground resistance, by using the material for reducing the ground resistance, water, or a mixture thereof as means for inserting said rod-shaped electrode during the drawing process of the screw so that the material for reducing ground resistance, water, or a mixture thereof can be injected starting from an inside lower portion of the excavated ground as soon as the rod-shaped electrode is inserted, can omit a refilling process by constructing the ground electrode simultaneous to disposal of the soil and sand, and can easily construct the ground electrode by significantly reducing surplus excavation soil. Moreover, the excavator of the present invention can stably insert the rod-shaped electrode into the ground without damage even if the insertion depth of the rod-shaped electrode inserted to reduce the ground resistance increases, by embedding the rod-shaped electrode in the second hollow portion inside the screw, fixing the rod-shaped electrode by a cap closing its lower portion, and inserting the rod-shaped electrode into the ground, protected by the screw.

Description

Excavation means for embedding ground electrode, ground resistance reduction device and ground resistance reduction method of ground including the same

The present invention relates to an excavation means for embedding a ground electrode, an apparatus and a method for reducing ground resistance of a ground comprising the same, wherein a rod-shaped electrode is embedded in a second hollow portion of a screw of the excavating means to excavate the ground. The rod-shaped electrode can be stably inserted without damage, and the ground-resistance reducing material can be injected without using internal pores by directly using a grounding resistance reducing material as a material to fill the surrounding space of the rod-shaped electrode. It is to provide an excavation means that can be increased, a ground resistance reduction device and ground resistance reduction method of the ground comprising the same.

Ground resistance refers to the electrical resistance between the ground electrode and the ground embedded in the ground, each has a unique ground resistance according to the ground characteristics.

However, when the grounding resistance is large, the earth potential is excessively increased due to excessive lightning current, and the insulation of the facility may be damaged, or damage may occur due to a short circuit. In particular, a space such as an oil tank may be grounded. If built in such a large area, sparks can occur and cause a large fire.

In order to solve the above problems, the ground resistance of the ground is measured before construction, and in the case of more than a predetermined value, the ground resistance of the ground should be reduced.

 As a conventional method of reducing ground resistance, a method has been proposed in which a hollow region is excavated in the ground in the height direction, a rod-shaped electrode is inserted, and a ground resistance reducing material is introduced into the peripheral portion thereof.

However, in the above method, when the insertion depth is long when the rod electrode is inserted, the rod electrode may be damaged, and as the abatement material is inserted downward from the ground, the rod may not be evenly injected into the hollow area around the ground electrode. There is this.

If the reducing material is not evenly injected, voids may be formed in the periphery of the rod-shaped electrode, and thus the effect of reducing the ground resistance may be greatly reduced.

In order to solve the above problems, Japanese Laid-Open Patent Publication No. 1996-241778 (name of the invention: a method of reducing ground resistance of the ground) has been disclosed, and more specifically, the method of reducing ground resistance of the ground is hollow in the ground. The excavation of the part, supplying the high pressure water to the hollow portion to form gold on the periphery of the hollow portion, it characterized in that the earth resistance reducing material is press-fitted.

The above method has an advantage of increasing the space resistance reduction efficiency by expanding the space where the reducing material can be introduced by forming an extension at the periphery of the hollow part using high pressure water, but in the process of inserting the rod electrode, There is a problem that the conventional risk that the electrode may be damaged remains as it is.

In addition, even after the ground resistance reducing material is put into the rod-shaped electrode and then pressurized and injected from the ground surface, it is impossible to completely contact the periphery of the rod-shaped electrode, and thus the conventional problem cannot be completely solved. In addition, the method has a disadvantage that the construction step is divided so that the construction time can be long.

The present invention has been made to solve the problems described above, an object of the present invention can be stably inserted into the excavated ground without damaging the rod electrode for reducing the ground resistance of the ground, the ground resistance reducing material is The present invention provides an excavation means that is injected with the insertion of a rod-shaped electrode to be evenly distributed throughout the excavated ground region, and an apparatus and method for reducing ground resistance of the ground including the same.

In addition, an object of the present invention is to ensure that the ground resistance reducing material is continuously supplied while the screw is easily rotated, and that the ground resistance of the ground is easily reduced by being inserted into the ground together with the rod-shaped electrode by the supply pressure of the ground resistance reducing material. The present invention provides an excavation means and a ground electrode embedding means, and an apparatus and method for reducing ground resistance including the same.

Excavation means 100 of the present invention is connected to the transfer means 170, the body 110 is formed with an injection portion 111 is supplied with a pressure supply material on one side; A first hollow portion 121 having a hollow inside is formed, and a plurality of communication holes 122 are formed around the connection part with the injection portion 111 so that the pressure supply material supplied through the injection portion 111 A rotating part 120 which is moved downward through the first hollow part 121; A bearing 130 provided between the body 110 and the rotating part 120 to allow the rotating part 120 to rotate; Driving means for rotating the rotating part 120 (not shown); The second hollow part 151 is formed to be connected to the lower side of the rotating part 120 to excavate the ground g, and have a hollow inside to communicate with the first hollow part 121. A screw 150 provided with a rod-shaped electrode 180; Characterized in that it is formed to include.

In addition, the screw 150 is characterized in that the lower end is closed by the cap 152, the excavating means 100 is the injection portion 111, the first hollow portion 121 and the second hollow portion The rod-shaped electrode 180 is inserted into the ground g by the pressure supply material moved along 151.

In addition, a sealing means for preventing the outflow of the pressure supply material is further provided between the body 110 and the rotating part 120, the screw 150 is characterized in that removable with the rotating part 120. It is done.

At this time, the pressure supply material is a ground resistance reducing material, water, or a mixture thereof, characterized in that it is interpolated with the rod electrode 180 in the ground (g) hollow by the screw 150. .

On the other hand, the ground resistance reduction device 1000 of the ground (g) of the present invention includes a water tank 200 in which water is stored; Reduction material mixing unit 300 is the water supply is supplied from the water tank 200, the reducing material inlet 310 is introduced to the ground resistance reducing material is introduced; Excavation means 100 according to any one of claims 1 to 6 connected to the reducing material mixing unit 300; Supplying water to the water tank 200 or the reducing material mixing unit 300 or the ground resistance reducing material, water or theirs from the reducing material mixing unit 300 to the injection portion 111 of the drilling means 100 A pump 400 for supplying the mixture; A transfer line 500 and a plurality of control valves for transferring the point resistance reducing material, water or a mixture thereof; It includes.

In addition, the reducing material mixing unit 300 is characterized in that the air supply unit 700 is connected to increase the degree of mixing of the ground resistance reducing material and water.

On the other hand, the ground (g) ground resistance reduction method according to the ground resistance reduction device 1000 of the ground (g) having the characteristics as described above Sa) to form a cap 152, to close the screw 150 lower portion Forming a cap 152; Sb) inserting the rod-shaped electrode 180 into the screw 150 on which the cap 152 is formed, and connecting the screw 150 to the lower portion of the rotating part 120; Sc) Ground (g) excavation step of drilling the ground (g) by adjusting the height of the transfer means 170 while rotating the rotating unit 120 and the screw 150 by the drive means; Sd) inserting the rod-shaped electrode 180 to insert the rod-shaped electrode 180 into the excavated ground g by supplying a pressure supply material using the pump 400; And Se) removing the screw 150 to remove the screw 150 inserted into the ground g using the transfer means 170; Characterized in that it comprises a.

In addition, the ground resistance reduction method of the ground is characterized in that the step of inserting the rod-shaped electrode 180 and the step of removing the screw 150 is performed at the same time.

Accordingly, the present invention is a means for inserting the rod electrode in the drawing process of the screw, by using a ground resistance reducing material, water or a mixture thereof, and inserting the rod electrode at the same time the ground resistance reducing material from the bottom of the excavated ground By injecting water or a mixture thereof, internal voids can be eliminated in the space in which the ground electrode is embedded, and foreign matters can be prevented from being mixed, thereby improving the ground resistance reduction efficiency of the ground. The construction of the electrode can eliminate the backfilling process, and there is an advantage that the ground electrode can be easily constructed by greatly reducing the excavation residue.

In addition, the excavation means of the present invention, the ground resistance reduction device and method including the ground is embedded in the second hollow inside the screw rod is embedded in the rod, the bottom is fixed by a cap that is closed by the cap while being protected by a screw Even if the insertion depth of the rod-shaped electrode to be inserted to reduce the ground resistance of the ground is increased by inserting inside, there is an advantage that can be stably inserted into the ground without damaging the rod-shaped electrode.

1 and 2 are a perspective view, and a cross-sectional view showing a drilling means according to the invention.

3 is a schematic view showing a ground resistance reduction device of the ground according to the present invention.

Figure 4 is a flow chart for adding water, ground resistance reducing material or mixtures of the ground ground resistance reducing apparatus according to the present invention.

Figure 5 is a step diagram of a method for reducing ground ground resistance according to the present invention.

6 to 10 show each step of the ground ground resistance reduction method according to the present invention.

** Description of the symbols for the main parts of the drawings **

1000: Ground resistance reduction device for ground

100: excavation means

110 body 111 injection part

120: rotating portion 121: first hollow portion

122: communication hole

130: bearing

140: axis of rotation

150: screw 151: second hollow portion

152: cap

160: sealing means 170: transfer means

180: rod electrode

200: water tank

300: reducing material mixing unit 310: reducing material input unit

400: Pump 500: Transfer Line

600: control valve 700: air supply

g: ground

Sa to Se: each step of the ground ground resistance reduction method according to the present invention

Hereinafter, the excavating means 100 and the ground resistance reducing device 1000 of the ground g including the same according to the present invention having the characteristics as described above will be described in detail with reference to the accompanying drawings.

1 and 2 are a perspective view and a cross-sectional view showing a drilling means 100 according to the present invention, Figure 3 is a schematic diagram showing a ground resistance reducing device 1000 of the ground (g) according to the present invention, Figure 4 Water, ground resistance reducing material or a mixture thereof in the ground resistance reducing device 1000 of the ground (g) according to the invention is a flow chart, Figure 5 is a step diagram of the ground (g) ground resistance reduction method according to the present invention, 6 to 10 is a view showing each step of the ground (g) ground resistance reduction method according to the present invention.

Excavation means 100 of the present invention is formed to include a body 110, a rotating portion 120, a bearing 130, a drive means, and a screw 150, first the body 110 to the conveying means 170 It is connected by the movement in the position and height direction is possible.

The transfer means 170 is connected to the body 110 to adjust the excavation position, and in conjunction with the drive means of the rotating unit 120 to move in the downward direction when the drive means is operated, such In this case, the excavation work may be more effectively performed by the pressure in the downward direction of the transfer means 170.

The body 110 is formed in a hollow tube shape, the injection portion 111 is formed to supply a pressure supply material on one side, the pressure supply material is supplied pressure for injection of the rod-shaped electrode 180 As a substance to be described again below.

The rotating part 120 is a predetermined portion is located inside the body 110, it is rotated by a drive means.

At this time, the bearing 130 is provided between the rotating unit 120 and the body 110, even if the rotating unit 120 is rotated, the position of the body 110 can be fixed, accordingly, Excavation means 100 is able to perform the operation smoothly without twisting the hose for supplying the pressure supply material connected to the injection portion (111).

The rotating part 120 is formed in a tubular shape in which the first hollow part 121 is formed to be hollow inside, and the pressure supply material supplied through the injection part 111 of the body 110 is rotated on the outer surface of the rotating part 120. The communication hole 122 is formed to move inward.

Since the body 110 is fixed and the rotation part 120 rotates, the inflow of the pressure supply material may not be made smoothly. Thus, the communication hole 122 is formed in plural along the circumference of the rotation part 120. It is preferable to be.

In addition, the drilling means 100 of the present invention is further provided with a sealing means between the body 110 and the rotating part 120 in order to lower the possibility that the pressure supply material can be discharged by the rotation of the rotating part 120. It is preferable to be.

The screw 150 is formed at the lower side of the rotating part 120 and as a means for excavating the ground (g) to form a hollow region (h) in the ground (g), the inside is hollow and rod-shaped electrode ( 180).

Since the screw 150 may have various types and sizes according to the excavation depth and the strength of the ground g, the screw 150 may be detachably formed at the lower portion of the rotating part 120, and the rod-shaped electrode 180 may be used. It is to be easily embedded in the second hollow portion 151.

The screw 150 has a second hollow portion 151 having a hollow inside to communicate with the first communication portion of the rotating part 120 to form a space in which the rod-shaped electrode 180 is provided, and the body ( The pressure supply material introduced through the injection part 111 of the 110, the communication hole 122 of the rotating part 120, and the first hollow part 121 is transferred.

At this time, a cap 152 is formed at the lower end of the screw 150 to allow the rod-shaped electrode 180 to be embedded in the second hollow portion 151.

The cap 152 is configured to protect the rod electrode 180 before the excavation work and in the ground (g) excavation process, when the cap 152 acts more than a predetermined pressure by the pressure supply material is released and the The rod-shaped electrode 180 and the pressure supply material are positioned in the ground g.

In addition, the cap 152 is provided in the lower portion of the screw 150, as well as the configuration in which the fixing is dismantled by the pressure supply material, the lower end of the screw 150 when closing the screw 150, When not excavated (during the drawing process) can be formed in an open configuration, the opening and closing of the cap 152 is configured to be controlled by water pressure or earth pressure (electrical operation) or automatically opened and closed by the movement of the screw 150. This can be used.

The pressure supply material may be a material such as air or water, and since the excavating means 100 of the present invention is a means for reducing the ground resistance of the ground g, the ground resistance may be reduced. It is more preferable to use a mixture of ash or ground resistance reducing material and water.

That is, the excavation means 100 of the present invention is excavated in the state in which the rod electrode 180 is embedded in the screw 150 to excavate the ground (g) first and the rod electrode in the process of injecting the rod electrode 180 After the 180 is positioned in the ground g with the screw 150 without being damaged, the pressure supply material is excavated together with the rod electrode 180 while raising the screw 150 upward. There is an advantage that can be easily inserted into the rod electrode 180 is supplied to the ground.

In addition, the excavation means 100 of the present invention is a pressure supply material for inserting the rod-shaped electrode 180 into the ground (g), by using a ground resistance reducing material that can reduce the ground resistance of the ground (g) With the addition of the rod-shaped electrode 180, the ground resistance reducing material may be evenly injected into the excavated region of the ground g.

On the other hand, the ground resistance reduction device 1000 of the ground (g) of the present invention includes a water tank 200 in which water is stored; Reduction material mixing unit 300 is the water supply is supplied from the water tank 200, the reducing material inlet 310 is introduced to the ground resistance reducing material is introduced; Excavation means 100 is connected to the reducing material mixing unit 300, and has the characteristics as described above; Supplying water to the water tank 200 or the reducing material mixing unit 300 or the ground resistance reducing material, water or theirs from the reducing material mixing unit 300 to the injection portion 111 of the drilling means 100 A pump 400 for supplying the mixture; A transfer line 500 and a plurality of control valves for transferring the point resistance reducing material, water or a mixture thereof; It includes.

The reducing material mixing unit 300 is a configuration for mixing the ground resistance reducing material that can reduce the ground resistance of the ground (g) and the water stored in the water tank 200, the body of the drilling means 100 It is connected to the injection portion 111 (110).

In addition, in the ground resistance reducing apparatus 1000 of the ground g of the present invention, an air supply unit 700 may be further formed to increase the mixing degree of the ground resistance reducing material and water.

The air supply unit 700 is included in the pressure supply material to facilitate disassembly of the cap 152 and to clean the air by supplying air into the excavating means 100 after the rod electrode 180 is inserted. It can play an additional role.

Ground resistance reduction device 1000 of the ground (g) of the present invention can be all the configuration is mounted on the car to facilitate the movement and use, in this case, the rotary part 120 of the drilling means 100 As the driving means for rotating, a means using hydraulic pressure or a compressor C of an automobile may be used.

In addition, the compressor of the vehicle may enable the operation of the air supply unit 700 to control the operation of the pump 400.

The pump 400 is formed in the transfer line 500 connecting the reducing material mixing unit 300 and the body 110 so that the ground resistance reducing material, water, or a mixture thereof may be used as the pressure supply material. Make sure to have a certain pressure.

As described above, the ground resistance reducing apparatus 1000 of the ground g of the present invention may inject the ground resistance reducing material and the rod-shaped electrode 180 together before the ground is collapsed by excavation by using the excavating means 100. It is possible to eliminate the internal voids in the space where the ground electrode is embedded, and to prevent the mixing of foreign matters, thereby increasing the ground resistance reduction efficiency of the ground. There is an advantage that can be removed, the ground electrode can be easily installed by greatly reducing the excavated residual soil.

5, a method of reducing the ground resistance of the ground g will be described.

Ground resistance reduction method of the ground (g) of the present invention Sa) cap 152 forming step; Sb) screw 150 connection step; Sc) ground (g) excavation step; Sd) inserting the rod-shaped electrode 180; And Se) screw 150 removal step; It includes.

As shown in FIG. 6, the forming of the cap 152 is a step in which the cap 152 is connected to the lower portion of the screw 150 to form a space in which the rod electrode 180 may be provided.

6 illustrates a form in which the cap 152 is fixed to the lower portion of the screw 150 as a star, but the present invention is not limited thereto, and the cap 152 is integrally formed at the lower portion of the screw 150. Accordingly, a configuration for opening and closing the lower portion of the screw 150 may be used.

In this case, forming the cap 152 may be interpreted as causing the cap 152 to close the lower portion of the screw 150.

In step Sb), the screw 150 is connected to the rod-shaped electrode 180 by inserting the rod-shaped electrode 180 into the second hollow portion 151 of the screw 150 on which the cap 152 is formed, as shown in FIG. It is a step of connecting the upper portion of the 150 and the lower portion of the rotating part 120.

As shown in FIG. 8, the ground (g) excavation step may be performed by adjusting the height of the transfer means 170 while operating the driving means to rotate the rotating part 120 and the screw 150. g) digging.

The Sd) rod electrode 180 insertion step is excavation through the excavation step by supplying a pressure supply material embedded in the reducing material mixing unit 300 using the pump 400 as shown in FIG. The rod-shaped electrode 180 is inserted into the ground g.

The Se) screw 150 removing step is to remove the screw 150 inserted into the ground g as shown in FIG.

At this time, the step of inserting the rod electrode 180 and the step of removing the screw 150 are performed at the same time so that the screw 150 is evenly embedded in the excavated region of the ground g. It is desirable to allow easy removal.

Through this, the ground resistance reduction method of the ground (g) according to the present invention can solve the inconvenience of re-introducing the reducing material in the ground after the conventional electrode insertion, and increases the reducing material filling rate without voids in the ground There is an advantage to increase the ground resistance reduction efficiency.

The present invention is not limited to the above-described embodiment, and the scope of application is of course various modifications can be made without departing from the gist of the present invention claimed in the claims.

Claims (10)

Body 110 is connected to the conveying means 170, the injection portion 111 is supplied with a pressure supply material on one side; A first hollow portion 121 having a hollow inside is formed, and a plurality of communication holes 122 are formed around the connection part with the injection portion 111 so that the pressure supply material supplied through the injection portion 111 A rotating part 120 which is moved downward through the first hollow part 121; A bearing 130 provided between the body 110 and the rotating part 120 to allow the rotating part 120 to rotate; Driving means for rotating the rotating part 120 (not shown); The second hollow part 151 is formed to be connected to the lower side of the rotating part 120 to excavate the ground g, and have a hollow inside to communicate with the first hollow part 121. A screw 150 provided with a rod-shaped electrode 180; Excavation means characterized in that it comprises a. The method of claim 1, The screw 150 is excavating means, characterized in that the lower end is closed by the cap 152 The method of claim 2, The digging means 100 is The rod-shaped electrode 180 is inserted into the ground g by the pressure supply material moved along the injection part 111, the first hollow part 121, and the second hollow part 151. Excavation means. The method of claim 3, Excavation means, characterized in that the sealing means for preventing the leakage of the pressure supply material is further provided between the body (110) and the rotating part (120). The method of claim 3, The screw 150 is excavating means, characterized in that detachable with the rotating part (120). The method of claim 3, The pressure supply material is a grounding resistance reducing material, water, or a mixture thereof, and excavating means characterized in that it is interpolated with the rod-like electrode (180) inside the hollow ground (g) by the screw (150). A water tank 200 in which water is stored; Reduction material mixing unit 300 is the water supply is supplied from the water tank 200, the reducing material inlet 310 is introduced to the ground resistance reducing material is introduced; Excavation means 100 according to any one of claims 1 to 6 connected to the reducing material mixing unit 300; Supplying water to the water tank 200 or the reducing material mixing unit 300 or the ground resistance reducing material, water or theirs from the reducing material mixing unit 300 to the injection portion 111 of the drilling means 100 A pump 400 for supplying the mixture; A transfer line 500 and a plurality of control valves for transferring the point resistance reducing material, water or a mixture thereof; Ground resistance reduction device of the ground comprising a. The method of claim 7, wherein The reduction material mixing unit 300 is ground resistance reduction device of the ground, characterized in that the air supply unit 700 is connected to increase the mixing degree of the ground resistance reducing material and water. Ground (g) ground resistance reduction method according to the device of claim 7 Sa) forming a cap (152) to form a cap (152) to close the bottom of the screw (150); Sb) inserting the rod-shaped electrode 180 into the screw 150 on which the cap 152 is formed, and connecting the screw 150 to the lower portion of the rotating part 120; Sc) Ground (g) excavation step of drilling the ground (g) by adjusting the height of the transfer means 170 while rotating the rotating unit 120 and the screw 150 by the drive means; Sd) inserting the rod-shaped electrode 180 to insert the rod-shaped electrode 180 into the ground (g) excavated by supplying a pressure supply material using the pump 400; And Se) removing the screw 150 to remove the screw 150 inserted into the ground (g) by using the transfer means 170; Ground resistance reduction method of the ground comprising a. The method of claim 9, The ground resistance reduction method of the ground The method of reducing ground resistance of ground, characterized in that the inserting the rod-shaped electrode (180) and removing the screw (150) at the same time.

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