JPH0938947A - Discharge impact destruction method and apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a discharge impact destruction method capable of sufficiently transmitting destruction force. SOLUTION: A hole 2 to be filled with a destructing substance 4 is formed to an article 1 to be destructed and a pair of electrodes 6 having a metal fine wire 5 across the leading end parts thereof are inserted in the hole 2 and the electric energy accumulated in a condenser is supplied to both electrodes 6 to melt and evaporate the metal fine wires 5 to expand the vol. of the destructing substance 4 to destruct the article 1 to be destructed. At this time, the destructing substance 1 and the metal fine wires 5 are arranged in a bag- shaped container 22 and the bag-shaped container 22 is inserted in the hole 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used for, for example, rock breaking work such as residential land development, rock breaking work, concrete structure dismantling work, finish breaking work in tunnels, or dismantling and breaking work in water. The present invention relates to a discharge impact destruction method and device.

[0002]

2. Description of the Related Art As a device for destroying an object to be destroyed such as rock mass, there is a discharge impact destruction device as shown in FIG. The discharge impact destruction device 101 is made of synthetic resin, glass, or the like, and has a substance for destruction (also referred to as a pressure transmitting substance).
For example, a cylindrical container 103 filled with water 102, a pair of electrodes 104 inserted into the cylindrical container 103 through the lid 103a, and a copper attached between the tip parts of these electrodes 104. Or fine metal wire 105 made of aluminum, etc.
And a capacitor 107 connected to both electrodes 104 via a discharging electric wire 106, and a high-voltage DC power supply (power supply unit) 109 connected to the capacitor 107 via a charging electric wire 108. Has been done.

Of course, a discharge switch 110 such as a thyristor is provided in the middle of the electric discharge wire 106, and a charge control circuit 111 having a charge switch for charging is arranged in the middle of the electric charge wire 108. It is installed.

When electric discharge destruction (impact destruction) is performed, an electrode installation hole is provided at a predetermined position of the object to be destroyed, for example, rock 121.
The cylindrical container 10 in which the electrode 104 and the metal fine 105 are arranged in the electrode installation hole 122
3 and insert the discharge switch 110 to instantly transfer the electric energy charged in the capacitor 107 to the thin metal wire 10.
This thin metal wire 105 is melted and vaporized by flowing it into 5, that is, causing it to discharge. Then, water is also instantaneously vaporized, and the bedrock 121 is destroyed by the impact force due to the volume expansion.

[0005]

By the way, according to the above-mentioned conventional discharge impact destruction device, the cylindrical container 103 filled with the water 102 which is the substance for destruction is inserted into the hole 122.
Since the shape of 122 and the shape of the cylindrical container 103 do not always match, and for example, the normal hole 122 is formed larger, a gap a is formed between the cylindrical container 103 and the cylindrical container 103, so that the destructive force is sufficiently transmitted. In some cases, the explosive force escaped from the opening of the hole 122.

Therefore, it is an object of the present invention to provide a discharge impact destruction method and an impact destruction device capable of sufficiently transmitting a destructive force.

[0007]

In order to solve the above-mentioned problems, a first method of electric discharge impact destruction according to the present invention is to form a hole for filling an object to be destroyed with a substance for destruction, and in this hole, a space between the tip portions is formed. Insert a pair of electrodes to which metal wires are attached, and supply the electric energy accumulated in the capacitor to these electrodes to melt and vaporize the metal wires to expand the destruction material volume and destroy the object to be destroyed. In this case, the destructive substance and at least the thin metal wire are placed in a container, and the opening of the hole after the container is placed is closed.

The first electric discharge impact destruction device of the present invention is a pair of electrodes which are inserted into a hole formed in an object to be destroyed and filled with a substance for destruction, and a thin metal wire is attached between the tips. A capacitor connected to both of these electrodes, a power supply section for supplying electricity to the capacitor, a charging control circuit interposed in the middle of charging electrical wiring between the power supply section and the capacitor, and the pair of In a discharge impact destruction device composed of a discharge switch interposed in the middle of an electric wiring for discharge between an electrode and a capacitor, a destruction substance filled in the hole is a metal attached to the lower ends of both electrodes. It is provided with a closing member which is filled in a container provided so as to accommodate the thin wire, and which is inserted into the hole at the time of the discharge breakdown work and then closes the opening.

According to the structure of each of the above-mentioned first means, the upper part of the container inserted into the hole formed in the object to be destroyed, that is, the opening of the hole is closed. Since the destructive force is prevented from coming out of the opening of the hole as it is, the destructive force can be increased and the destruction efficiency can be improved.

Further, according to the second electric discharge impact destruction method of the present invention, a hole for filling the material to be destroyed is formed in the object to be destroyed, and a pair of electrodes each having a thin metal wire attached between the tips are formed in the hole. When the electric energy stored in the capacitor is inserted into these electrodes to melt and vaporize the thin metal wires, the destructible substance is expanded in volume to destroy the object to be destroyed. This is a method in which a thin wire is placed in an elastic bag-shaped container and the elastic bag-shaped container is inserted into a hole.

Further, in the above discharge impact destruction method, after the elastic bag-shaped container is inserted into the hole, the opening of the hole is closed. A second electric discharge impact destruction device of the present invention includes a pair of electrodes which are inserted into a hole formed in an object to be destroyed and which is filled with a destructive substance, and a thin metal wire is attached between tip portions thereof. A capacitor connected to both electrodes, a power supply section for supplying electricity to the capacitor, a charge control circuit interposed in the middle of electric charging wiring between the power supply section and the capacitor, the pair of electrodes and the capacitor In a discharge impact destruction device consisting of a discharge switch interposed in the middle of the electric wiring for discharge between and, the destruction substance filled in the hole is accommodated in a thin metal wire attached to the lower end portions of the both electrodes. It is filled in an elastic bag-shaped container provided so as to do so.

According to the structure of each of the above-mentioned second means, since the container filled with the substance for destruction is a bag-shaped container having elasticity, even if the hole formed in the object to be destroyed is deformed, Since the bag-shaped container contacts along the inner wall surface of the hole, the destructive force is reliably transmitted, and the destruction efficiency can be improved.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION A first embodiment of the present invention will be described below with reference to the drawings. Since the gist of the present invention is a container into which a destructive substance and an electrode part are inserted, this description will be focused on this part, and an electric circuit part that supplies electric energy between the electrodes will be described in a conventional example. Since it is the same as that described above, the description thereof will be omitted.

That is, as shown in FIG. 1, a cylindrical container (synthetic resin or glass, which is a relatively hard material, is inserted into a hole 2 formed in an object to be destroyed (eg, rock or concrete) 1. (Made up) is filled with a destructive substance (also called a pressure transmitting substance, for example, a gel-like substance such as water, oil or jelly) 4, and a metal made of copper or aluminum between the tips thereof. A pair of electrodes 6 to which the thin wires 5 are attached are inserted.

A stopper 7 for enclosing the destructive substance 4 is provided in the opening 3a of the cylindrical container 3 into which the electrode 6 and the thin metal wire 5 are inserted, and the cylindrical container 3 is further inserted. The opening 2a of the hole 2 is filled with a closing member 8 such as sand for closing the opening 2a.

In the above structure, when electric energy is supplied from a capacitor (not shown) connected to the pair of electrodes 6 through the electric wiring 9, the thin metal wire 5 is instantaneously melted and vaporized, that is, water is generated. The object to be destroyed 1 is destroyed because it evaporates instantaneously and expands in volume.

As described above, since the opening 3a of the cylindrical container 3 and the opening 2a of the hole 2 are strongly closed by the sealing plug 7 and the closing member 8, respectively, as in the conventional case.
Unlike the lid portion that merely prevents leakage of the destructive substance in the container, it is possible to increase the destructive force due to discharge destruction, that is, impact destruction.

Next, a second embodiment of the present invention will be described with reference to the drawings. In the second embodiment, as shown in FIG. 2, a destructible substance 4 such as water is placed in a cylindrical container 3 made of synthetic resin or glass, which is inserted into a hole 2 formed in an object to be destroyed 1. After being filled with water, it is a fibrous member such as paper or cloth that is moistened with water (also called a fiber, which is an example of a closing member)
11 are stacked and pushed in, and the metal stopper 12 is tapped from there and pushed.

When the metal plug 12 is hit and pushed, the water soaked in the fiber member 11 enters the gap a between the cylindrical container 3 and the hole 2 and the gap a is filled with water. . Therefore, since there is no gap, that is, a space between the cylindrical container 3 and the hole 2, the destructive force due to the electric discharge destruction is surely transmitted to the object to be destroyed 1 side. It should be noted that FIG. 3 shows a state after discharge breakdown, and in FIG. 3, 1a is a direct breakdown region.

Next, a third embodiment of the present invention will be described with reference to the drawings. In the first and second embodiments described above, the cylindrical container is made of a relatively hard material such as synthetic resin or glass and the shape thereof is not deformed. However, in the third embodiment, The container for filling the object to be destroyed is made of an elastic material.

Specifically, as shown in FIG. 4, a rubber bag-like container 22 is suspended from a stopper 21 made of cork or the like. Of course, at this time, the thin metal wires 5 are attached to the tips of the pair of electrodes 6 inserted through the plug body 21, and the bag-shaped container 22 is filled with water as the destruction substance 4. .

At the time of the electric discharge destruction work, as shown in FIG. 5, after inserting the bag-shaped container 22 in which the electrode 6 is arranged and filled with the water 4 into the hole 2, the closing member, for example, from above is inserted. The clay 23 is filled to close the opening 2a.

Then, in this state, electric energy is supplied from the capacitor between the electrodes 6 to melt and vaporize the thin metal wires 5 and destroy the object 1 to be destroyed by the volume expansion of water.
In this way, since the bag-like container 22 having elasticity such as rubber is filled with water, which is the substance 4 to be destroyed, to cause electric discharge breakdown, a gap is formed between the container 22 and the hole 2. Since it does not occur, the entire bag-shaped container 22 is pressed by the clay 23 from above the bag-shaped container 22,
Even if the hole 2 formed in the object to be destroyed 1 is deformed,
Since the container 22 and the inner wall surface of the hole 2 are surely brought into contact with each other, the destructive force of the explosion due to the electric discharge is directly transmitted to the object to be destroyed 1.

In the above embodiment, the pair of electrodes is arranged in the bag-shaped container 22. However, as shown in FIG. 6, for example, as shown in FIG. The electrodes 6A and 6B can also be arranged. Of course, a plurality of sets of electrodes 6 can also be arranged in the container 3 of the first and second embodiments.

Although the rod-shaped electrode is shown as the electrode in the first embodiment, an electric wire may be used as the electrode, for example, as shown in FIG. 2 in the second embodiment.

Further, in the drawings showing the above-mentioned respective embodiments, the direction of the hole 2 formed in the object to be destroyed 1 is shown as a vertical direction, but the hole 2 may be formed in any direction, for example, in the lateral direction. It may be diagonal.

[0027]

As described above, according to the structure of the present invention, the upper part of the container inserted into the hole formed in the object to be destroyed, that is, the opening of the hole is closed, so that the discharge is destroyed. Since the destructive force is prevented from coming out from the opening of the hole as it is, the destructive force can be increased and the destruction efficiency can be improved.

According to another aspect of the present invention, since the container filled with the destructive substance is a bag-shaped container having elasticity, even if the hole formed in the object to be destroyed is deformed, Since the bag-shaped container contacts along the inner wall surface of the hole, the destructive force is reliably transmitted and the destruction efficiency can be improved as compared with the conventional case where a gap is formed.

[Brief description of drawings]

FIG. 1 is a sectional view of a main part of a discharge impact destruction device according to a first embodiment of the present invention.

FIG. 2 is a sectional view of a main part of a discharge impact destruction device according to a second embodiment of the present invention.

FIG. 3 is a perspective view showing a state at the time of discharge breakdown in the second embodiment.

FIG. 4 is a sectional view showing the main part of a discharge impact destruction device according to a third embodiment of the present invention.

FIG. 5 is a cross-sectional view showing a set state of the discharge impact destruction device according to the third embodiment.

FIG. 6 is a cross-sectional view of an essential part of a modified example of the discharge impact destruction device according to the third embodiment.

FIG. 7 is a schematic diagram showing an overall outline of a conventional discharge impact destruction device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Destruction object 2 Hole 2a Opening 3 Cylindrical container 3a Opening 4 Destruction substance 5 Metal fine wire 6 Electrode 7 Encapsulation plug 8 Closing member 11 Fiber member 12 Metal stopper 22 Bag-like container 23 Clay

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takeshi Kato 5-3-8 Nishikujo, Konohana-ku, Osaka City, Osaka Prefecture Hitachi Shipbuilding Co., Ltd. No. 28 in Hitachi Shipbuilding Co., Ltd.

Claims (5)

[Claims] 1. A hole for filling a substance to be destroyed is formed in an object to be destroyed, and a pair of electrodes, each having a thin metal wire attached between the tips thereof, are inserted into the hole, and a capacitor is accumulated on both electrodes. When destroying the destructible substance by expanding the volume of the destructive substance by supplying electric energy to melt and vaporize the thin metal line, the destructive substance and at least the metallic fine line are arranged in a container, and this container is arranged. A method of destroying electric shock, comprising closing the opening of the hole after being crushed. 2. A pair of electrodes which are inserted into a hole formed in an object to be destroyed and which is filled with a destructive substance, and a thin metal wire is attached between the tips, and a capacitor connected to these electrodes. A power supply section for supplying electricity to this capacitor, a charging control circuit interposed in the middle of the charging electric wire between the power supply section and the capacitor, and a middle of the discharging electric wire between the pair of electrodes and the capacitor In a discharge impact destruction device consisting of a discharge switch interposed in the, the destruction material filled in the hole, in a container provided to accommodate the thin metal wire attached to the lower ends of the both electrodes. A discharge impact destruction device, characterized by comprising a closing member for filling the container and inserting the container into the hole at the time of the discharge destruction operation and then closing the opening. 3. A hole for filling a substance to be destroyed is formed in an object to be destroyed, and a pair of electrodes, each having a thin metal wire attached between the tips thereof, are inserted into the hole, and the electrodes are accumulated in a capacitor. When destroying the object to be destroyed by expanding the volume of the destructible substance by supplying electric energy to melt and vaporize the thin metal line, the destructive substance and at least the metal fine line are placed in an elastic bag-shaped container. A method for destroying electric shock by inserting an elastic bag-shaped container into a hole. 4. The method according to claim 3, wherein the opening of the hole is closed after the elastic bag-shaped container is inserted into the hole. 5. A pair of electrodes, which are inserted into a hole formed in an object to be destroyed and filled with a destructive substance, and are provided with a thin metal wire between their tip portions, and a capacitor connected to both electrodes. A power supply section for supplying electricity to this capacitor, a charging control circuit interposed in the middle of the charging electric wire between the power supply section and the capacitor, and a middle of the discharging electric wire between the pair of electrodes and the capacitor In a discharge impact destruction device comprising a discharge switch interposed between the electrodes, an elastic bag-like member provided so as to house the thin metal wire attached to the lower ends of the electrodes, the destruction material filled in the holes. A discharge impact destruction device characterized by being filled in a container.