JP2002233783A - Power probe for crushing and method for using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily feed liquid into the hole of an object to be crushed after a power probe for crushing is put into the hole of the object to improve working efficiencies, thereby expanding the conditions for performing crushing actions. SOLUTION: In the power probe 10a for crushing, a liquid feed hole 32 is formed along the center axis of a center conductor 12 to pass the liquid 6 fed from the outside through the interior of the center conductor 12 of the probe 10a, thereby discharging the liquid 6 from the exposed part 13 of the forward end of the hole 32. The probe 10a is used, for example, in such a manner as described below: the probe 10a is fitted in the hole 4 of an object 2 to be crushed, and then the inlet of the hole 4 is sealed with a sealing material 30 to feed the liquid 6 into the hole 4 through the hole 32, thereby filling the hole 4 with the liquid 6, while a positive pressure is applied onto the liquid 6 in the hole 4 until a crushing action is performed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for generating a shock wave by generating an arc discharge in a liquid filled in a hole of a body to be crushed, such as rock or concrete, and instantaneously vaporizing the liquid to generate a shock wave. The present invention relates to a crushing power probe used for crushing a crushed body and a method of using the same.

[0002]

2. Description of the Related Art FIG. 3 is a sectional view showing an example of a state in which a conventional crushing power probe is mounted in a hole of a crushed object. Conventionally, usually, a hole 4 is made obliquely downward, for example, in this example, such as rock or concrete, and a liquid 6 such as water (more specifically, tap water) is formed in the hole 4. After filling, the crushing power probe 10 is inserted into the hole 4 and attached. The hole 4 may be opened downward.

[0003] The crushing power probe 10 covers an outer periphery of a cylindrical central conductor 12 with an insulator 14.
The outer conductor 16 is provided in a cylindrical shape on the outer periphery of the
16 are arranged coaxially, and the exposed portion 13 exposed from the insulator 14 is provided at the tip of the center conductor 12.

In the above state, the high-voltage power supply 22
Then, a high voltage is applied between the center conductor 12 of the crushing power probe 10 and the outer conductor 16, and more specifically, at the tip of the crushing power probe 10, more specifically, at the exposed portion 13 of the center conductor 12 and the outside. An arc discharge 18 is generated between the conductor 16 and the tip surface 15 of the insulator 14. This arc discharge 18 causes the surrounding liquid 6 to instantaneously evaporate and expand to generate a shock wave 20, and the crushed body 2 can be crushed by the impact force of the shock wave 20.

[0005] In this example, the tip surface 15 of the insulator 14 is
It has a conical slope. In such a case, an arc discharge 18 is generated along the front end face 15 and a shock wave 20 is generated in a direction intersecting the arc discharge 18. In addition, the shock wave 20 can be effectively used by crushing the crushed object 2.

The high-voltage power supply 22 is, for example, a capacitor 2
6, a charging power supply 24 for charging a high voltage, and an output switch 28.

[0007]

In the prior art as described above, when there is a crack (crack, crack) or the like which is in communication with the hole 4 of the crushed object 2, the actual crushing operation is performed after the liquid 6 is filled. In the meantime, the liquid 6 in the hole 4 leaks from the crack and decreases, and the impact force at the tip of the crushing power probe 10 when the arc discharge occurs is not sufficiently transmitted to the crushed body 2. Can occur. This is because when the level of the liquid 6 is reduced due to the shortage of the liquid 6, the effect of confining the shock wave 20 by the inertia of the liquid 6 is reduced.
This is because the impact force decreases. In an extreme case, when the liquid 6 drops near the portion where the arc discharge 18 occurs, the liquid
It only makes splashes and splatters.

When the hole 4 is made in the crushed body 2 in a horizontal or upward direction, for example, when the hole 4 is made in a ceiling or the like in a tunnel, the liquid 6 leaks from the hole 4.
The liquid 6 cannot be retained in the hole 4. Therefore, conventionally, the direction of the hole 4 has been limited obliquely downward or downward. This limits the conditions under which the crushing operation can be performed.

For this purpose, as shown in FIG. 4, for example, after the crushing power probe 10 is attached to the hole 4,
The vicinity of the entrance of the hole 4 is sealed with a sealing material 30, and a part of the sealing material 30 is removed, and the liquid 6 is passed through the gap.
May be filled in the hole 4 and then the gap is closed while taking care not to leak the liquid 6, but this is troublesome and poor in workability. In addition, it is difficult to keep the quality of the work uniform, and the liquid 6 may leak and run short.

Accordingly, the present invention is to improve the workability and to perform the crushing operation by allowing the crushing power probe to be easily supplied to the hole after the crushing power probe is mounted in the hole. The main purpose is to expand the conditions under which it is possible.

[0011]

A crushing power probe according to the present invention is characterized in that a liquid supply hole is provided in the center conductor for passing a liquid supplied from the outside and discharging the liquid from the exposed portion. Features.

According to the power probe for crushing, the liquid can be supplied to the hole of the crushed object through the liquid supply hole of the power probe for crushing after the probe is attached to the hole of the crushed object. The workability is improved as compared with the case where the liquid is supplied through the gap of the sealing material and then the gap is closed. The quality of work does not matter.

Also, no matter what direction the hole of the crushed object is oriented, the liquid can be supplied to the hole through the liquid supply hole of the crushing power probe. Can be expanded.

Further, even after the crushing power probe is mounted in the hole of the crushed object and the liquid is filled, the liquid can be easily refilled into the hole of the crushed object through the liquid supply hole. It is possible to easily prevent a drop in impact force due to a shortage of liquid.

According to a first method of using the crushing power probe according to the present invention, after the crushing power probe according to claim 1 is attached to a hole of the crushed object, the crushing power probe is passed through the liquid supply hole. It is characterized in that the liquid is supplied to the hole of the object to be crushed.

According to the method of using the crushing power probe, the liquid is supplied to the hole of the crushed object through the liquid supply hole of the crushing power probe after the crushing power probe is mounted in the hole of the crushed object. The same effect as the above-mentioned effect of the first aspect of the invention can be obtained. That is, workability is improved, and the quality of work does not matter. Further, conditions under which the crushing operation can be performed can be expanded. Further, it is possible to easily prevent a drop in the impact force due to the shortage of the liquid.

According to a second method of using the crushing power probe according to the present invention, the crushing power probe according to claim 1 is mounted in a hole of the crushed object, and the vicinity of the entrance of the hole is sealed with a sealing material. After stopping, the liquid is supplied to the hole of the crushed object through the liquid supply hole of the crushing power probe to fill the hole of the crushed object with the liquid and to correct the liquid in the hole until the crushing operation is performed. It is characterized by applying pressure.

According to the method of using the crushing power probe, the same operation and effect as those of the first method of use are obtained, and further, the following operation and effect are obtained. That is, since a positive pressure is applied to the liquid in the hole of the crushed object until the crushing operation is performed, the liquid can be automatically replenished even if there is a crack or the like in the hole of the crushed object and the liquid leaks. . Therefore, it is possible to easily and reliably prevent the impact force from being reduced due to the shortage of the liquid.

[0019]

FIG. 1 is a sectional view showing an example of a state in which a crushing power probe according to the present invention is mounted on a hole of a crushed object. Parts that are the same as or correspond to the examples shown in FIGS. 3 and 4 are denoted by the same reference numerals, and differences from the examples will be mainly described below.

The crushing power probe 10a of this example is
The above-described exposed portion 1 is passed through the above-described liquid 6 supplied from the outside into the inside of the central conductor 12 as described above.
A liquid supply hole 32 discharged from 3 is provided along the central axis of the central conductor 12.

Since a high voltage is applied to the center conductor 12 from the high-voltage power supply 22 as described above, it is preferable to supply the liquid 6 to the liquid supply hole 32 via the insulating pipe 34 as in this example. preferable. The insulating pipe 34 is made of, for example, a vinyl hose. A valve may be provided in the insulating pipe 34 as needed.

The discharge hole 33 ahead of the liquid supply hole 32 is provided in the exposed portion 13 of the center conductor 12. The position, shape, number, etc. of the discharge holes 33 are such that the generation of the arc discharge 18 and the generation of the shock waves 20 due thereto are not affected as much as possible.
Further, it is preferable that the insulating pipe 34 and the like connected thereto are not affected as much as possible.

For example, in the example of FIG. 1, one emission hole 33 is provided on the central axis of the central conductor 12. Arc discharge 18
Is generated near the root of the exposed portion 13 along the distal end surface 15 of the insulator 14, so that even if the discharge hole 33 is provided at the above position, the occurrence of the arc discharge 18 is not affected. Further, the discharge hole 33 is not affected by the generation of the arc discharge 18. In addition, since the place where the shock wave 20 is generated is also separated from the discharge hole 33, the liquid supply hole 3
2 and the shock wave 20 transmitted to the insulating pipe 34 can be reduced. Another example of the discharge hole 33 will be described later with reference to FIG.

Since a thin liquid supply hole 32 is sufficient, the impact force drop (pressure drop) through the liquid supply hole 32 is small. If the liquid supply hole 32 is made thinner, it is possible to further reduce the impact force. Also,
Even if the impact force is transmitted to the insulating pipe 34, usually the insulating pipe 3
4 is made of a vinyl hose or the like and has flexibility, so that the impact force can be absorbed.

The crushing power probe 10a is used, for example, as follows. That is, after being inserted and mounted in the hole 4 of the crushed object 2 as described above, the liquid 6 is supplied to the hole 4 through the liquid supply hole 32 of the crushing power probe 10a and filled. When the hole 4 is obliquely downward or downward, the vicinity of the entrance of the hole 4 does not need to be sealed with the sealing material 30 as in the case of the conventional example shown in FIG.

When the hole 4 is in the horizontal direction (the example in FIG. 1) or upward, the crushing power probe 10a is inserted into the hole 4 and mounted, and the vicinity of the entrance of the hole 4 is sealed with a sealing material 30. After stopping, the liquid 6 is supplied to the hole 4 through the liquid supply hole 32 of the crushing power probe 10a to be filled.

At this time, the pressure is applied while the liquid 6 is supplied from the outside, and the liquid 6 in the hole 4 is kept in a positive state until the crushing operation is performed by the liquid 6 supplied from the outside. It is preferable to apply pressure. This positive pressure may be a small positive pressure because it is sufficient to compensate for leakage of the liquid 6 due to cracks or the like from the holes 4. For example, the pressure may be about the pressure of ordinary tap water. That is, it is sufficient that tap water is used as the liquid 6 and supplied to the hole 4 via the insulating pipe 34 and the liquid supply hole 32.

According to the present invention, after the crushing power probe 10a is attached to the hole 4 of the crushed body 2, the liquid 6 is supplied to the hole 4 of the crushed body 2 through the liquid supply hole 32 of the crushing power probe 10a. Therefore, the workability is remarkably improved as compared with the case where the liquid 6 is supplied through the gap of the sealing material 30 and the cumbersome work of closing the gap is performed. The quality of work does not matter. No matter who goes, similar work results can be obtained.

Further, the liquid 6 can be supplied to the hole 4 through the liquid supply hole 32 of the crushing power probe 10a regardless of the direction of the hole 4 of the object 2 to be crushed. The conditions that can be performed can be expanded.

In particular, when the hole 4 of the crushed object 2 is horizontal or upward, as described above, it is difficult to hold the liquid 6 in the hole 4 in the prior art. According to this, since the above can be easily performed as described above, the effect becomes more remarkable when the present invention is applied when the hole 4 is in the horizontal direction or the upward direction.

Even after the crushing power probe 10a is mounted in the hole 4 of the crushed body 2 and the liquid 6 is filled, the liquid 6 is supplied through the liquid supply hole 32 to the hole 4 of the crushed body 2.
Thus, it is possible to easily prevent a drop in the impact force due to the shortage of the liquid 6.

As described above, if a positive pressure is applied to the liquid 6 in the hole 4 of the crushed object 2 through the liquid supply hole 32 of the crushing power probe 10a until the crushing operation is performed,
Even if there is a crack or the like in the hole 4 of the crushed object 2 and the liquid 6 leaks, the liquid 6 can be automatically refilled. There is no need to provide a special detection mechanism or control mechanism. Therefore,
It is possible to easily and reliably prevent a drop in the impact force due to the shortage of the liquid 6.

At the tip of the crushing power probe 10a,
A discharge electrode 36 facing the exposed portion 13 may be provided. FIG. 2 shows an example. The discharge electrode 36 is located on the central axis of the central conductor 12 in this example, and has a plurality of (for example, three) columns 38 and a plurality of (three in this example) columns.
It is detachably attached to the distal end of the external conductor 16 via a connection fitting 40 and is electrically connected. In addition, in FIG. 2, although it may seem as if the support | pillar 38 blocks the circumference | surroundings of the exposure part 13, the support | pillar 38 is pillar-shaped and does not block there. Therefore, shock wave 2
0 is transmitted to the crushed object 2 without any trouble.

When such a discharge electrode 36 is provided, an arc discharge 18 is generated between the exposed portion 13 of the center conductor 12 and the discharge electrode 36 along the center axis of the center conductor 12,
As a result, the shock wave 20 is generated radially around the central axis of the central conductor 12 with good uniformity, so that the shock wave 20 can be used more effectively by crushing the crushed object 2.

When such a discharge electrode 36 is provided, the discharge hole 33 at the end of the liquid supply hole 32 may be as shown in the example of FIG. 1, but rather than that as in the example of FIG. It is preferable to provide the center conductor 12 radially around the center axis of the center conductor 12 near the base of the exposed portion 13 of the center conductor 12. Although the number of the discharge holes 33 may be one, it is more preferable that the number is plural. When the discharge hole 33 is provided at such a position, the discharge hole 33 is located at a completely different place irrespective of the location where the arc discharge 18 is generated. Has no effect.
Further, the discharge hole 33 is not affected by the generation of the arc discharge 18. Moreover, since the direction in which the shock wave 20 is generated is along the discharge hole 33, the shock wave 20 transmitted to the liquid supply hole 32 and the insulating pipe 34 can be further reduced.

[0036]

Since the present invention is configured as described above, it has the following effects.

According to the crushing power probe of the first aspect, after the crushing power probe is attached to the hole of the crushed object, the liquid can be supplied to the hole of the crushed object through the liquid supply hole of the crushing power probe. Therefore, the workability is improved as compared with the case where the liquid is supplied through the gap of the sealing material and then the gap is closed. The quality of work does not matter.

In addition, no matter what direction the hole of the object to be crushed is oriented, the liquid can be supplied to the hole through the liquid supply hole of the power probe for crushing. Can be expanded.

Even after the crushing power probe is mounted in the hole of the crushed object and the liquid is filled, the liquid can be easily refilled into the hole of the crushed object through the liquid supply hole. It is possible to easily prevent a drop in impact force due to a shortage of liquid.

According to the method of using the crushing power probe, the crushing power probe is attached to the hole of the crushed object, and then the liquid is passed through the liquid supply hole of the crushing power probe. Therefore, the same effect as the above-described effect of the first aspect of the present invention can be obtained. That is, workability is improved, and the quality of work does not matter. Further, conditions under which the crushing operation can be performed can be expanded. Further, it is possible to easily prevent a drop in the impact force due to the shortage of the liquid.

According to the method of using the crushing power probe of the third aspect, the same effect as the above-mentioned effect of the second aspect of the present invention is obtained, and further, the following effect is obtained. That is,
Since a positive pressure is applied to the liquid in the hole of the crushed object until the crushing operation is performed, the liquid can be automatically replenished even if there is a crack or the like in the hole of the crushed object and the liquid leaks. Therefore, it is possible to easily and reliably prevent the impact force from being reduced due to the shortage of the liquid.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an example of a state in which a crushing power probe according to the present invention is mounted in a hole of a crushed object.

FIG. 2 is an enlarged sectional view showing the vicinity of the tip of another example of the crushing power probe according to the present invention.

FIG. 3 is a cross-sectional view showing an example of a state in which a conventional power probe for crushing is mounted in a hole of a crushed object.

FIG. 4 is a cross-sectional view showing another example of a state in which a conventional power probe for crushing is mounted in a hole of a crushed object.

[Explanation of symbols]

 2 crushed object 4 hole 6 liquid 10a crushing power probe 12 center conductor 13 exposed portion 14 insulator 16 outer conductor 18 arc discharge 20 shock wave 30 sealing material 32 liquid supply hole

Claims (3)

[Claims] 1. A method for generating an arc discharge in a liquid in a hole of a crushed object to crush the crushed object, wherein an outer periphery of a center conductor is covered with an insulator, and an outer periphery of the insulator is provided. In the crushing power probe having a configuration in which an outer conductor is provided, both conductors are coaxially arranged, and an exposed portion exposed from the insulator is provided at the end of the center conductor, the inside of the center conductor is supplied from outside. A crushing power probe provided with a liquid supply hole through which the liquid to be discharged is discharged from the exposed portion. 2. After the crushing power probe according to claim 1 is mounted on a hole of the crushed object, a liquid is supplied to the hole of the crushed object through the liquid supply hole of the crushing power probe. To use the crushing power probe. 3. The liquid supply hole of the power probe for crushing after mounting the power probe for crushing according to claim 1 in a hole of the object to be crushed and sealing the vicinity of the entrance of the hole with a sealing material. And supplying a liquid to the hole of the crushed object through the hole to fill the hole of the crushed object with the liquid and applying a positive pressure to the liquid in the hole until the crushing operation is performed. How to use