JP3672443B2 - Destruction method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention melts and vaporizes a molten vaporized substance (for example, a fine metal wire) by supplying electric energy in a short time, and uses an event of the process accompanying the molten vaporization to provide an explosive (or flammable) destructive substance. The present invention relates to a destructive method that explodes and destroys destruction objects such as concrete structures and rocks.
[0002]
[Prior art]
Conventionally, there is a method of using dynamite and a detonator as a means for exploding the dynamite in order to destroy an object to be destroyed such as a concrete structure or a bedrock.
[0003]
By the way, in order to ensure safety, the dynamite is configured so as not to explode easily even when a slight impact force is applied by using an insensitive gunpowder or by ignition. For this reason, the detonator is filled with explosives that easily explode inside, and this explosive is explode by fire or electric spark, and the explosive on the dynamite side is exploded by this impact.
[0004]
[Problems to be solved by the invention]
As mentioned above, the detonator is loaded with explosives that explode relatively easily, so if leakage current, surges, lightning, etc. of peripheral devices occur, there is a risk that these currents will be supplied to the detonator and explode. There is.
[0005]
Then, this invention aims at provision of the destruction method which can solve the said subject.
[0006]
[Means for Solving the Problems]
Means for solving the problem in the present invention is that a molten vaporized substance connected to a pair of electrodes is disposed in a destruction container enclosing a destructive substance, and charging energy charged in a capacitor with respect to the molten vaporized substance is obtained. by supplying a short time, rapidly melted vaporizing the molten vapors, in destructive method for destroying an object to be debris by the impact force generated in association with the melting evaporation of the molten vapors, the melt by the impact force when the explosive of the destruction substance sealed around the vapors by exploding to destroy the object debris, the longest distance L _C at the disruption was Shitsuma from the molten vapors, said condenser charge energy W _C, the melt vaporization material the relation between the explosion conditions P _b required to detonate the breaking substance is an impact force generated when the molten vaporized, the following b) formula
L _C ≦ 8 · W _C / P _b (b)
Is set to satisfy
[0007]
According to this breakdown process, even such leakage currents peripheral devices occurs, the breaking substance as long as the electric energy to melt vapors are melted vaporized not supplied does not explode, the safety of when handling the device but the above direction. By setting as above Symbol formula (b), the by exploding the explosive destruction substance sealed around the melting vapors by the impact force generated in association with the molten vaporization of molten vapors When destroying destructive materials, all destructive materials can be exploded with a single impact, leaving no destructive material, and efficiently destroying the destructible materials with the impact force and destructive material explosive force. I can .
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. First, the destruction apparatus 1 for implementing the destruction method according to the first embodiment of the present invention will be described.
[0009]
As shown in FIGS. 1 to 5, the destructive device 1 is provided with a destructive probe P that is mounted in a mounting hole 5 formed in the object 4 to be destructed. A destruction container 6 formed of a metal material or wood, paper material, or synthetic resin material other than a metal material, an explosive destruction substance 7 enclosed in the destruction container 6, and the destruction container 6 are mounted. It is composed of a pair of electrodes 9 inserted through the lid member 8 and a thin metal wire 2 (which is an example of a molten vaporized material and made of Cu or the like) 2 that connects the tip portions of the electrodes 9, and the destruction material 7 For example, nitromethane or the like is used.
[0010]
An electric energy supply circuit 10 for supplying a predetermined amount of electric energy necessary to melt and vaporize the fine metal wires 2 is connected to the electrodes 9, and the electric energy supply circuit 10 is connected to each electrode. 9 and a capacitor 14 connected in series between the power supply 11 and one terminal 8a and connected in parallel between the power supply 11 and both terminals 8a. It comprises a charge control circuit 12 for controlling to store a predetermined amount of electric energy, and a discharge switch 13 connected between the charge control circuit 12 and one terminal 8a.
[0011]
Next, the destruction method when destroying the to-be-destructed object 4 using the destruction apparatus 1 will be described. First, the destruction substance 7 is put in the destruction container 6, the electrode 9 whose tip portions are connected by the thin metal wire 2 is inserted into the lid member 8, and the lid member 8 is attached to the destruction container 6 to produce the destruction probe P. . Then, the destruction probe P is attached to the attachment hole 5 formed in the object 4 to be destroyed, and the electric energy supply circuit 10 is connected to the electrode 9.
[0012]
Then, by supplying the charging energy charged in the capacitor 14 of the electric energy supply circuit 10 to the fine metal wire 2 in a short time (μS order), the fine metal wire 2 is rapidly melted and vaporized, and the fine metal wire 2 is melted. Impact force due to discharge energy and volume expansion energy during vaporization (a phenomenon associated with the process of melting and vaporizing the metal thin wire 2, which includes discharge, sparks, and heat generation) around the metal thin wire 2 The provided destruction material 7 is exploded, and the destruction target 4 is destroyed by the expansion force when the fine metal wire 2 is melted and vaporized and the explosion force of the destruction material 7.
[0013]
Incidentally, assembling examples of the destruction probe P when the destruction substance 7 is put in the destruction container 6 and the lid member 8 is mounted on the destruction container 6 may be as shown in FIGS. Is known, the longest distance L _c (cm) from the fine metal wire 2 to the end of the destructive material 7 is known. Of Lt1, Lt2, Ls1, Ls2 in each figure, the maximum distance L _c is the case of FIG. 3 Ls2, in the case of FIG. 4 Lt1, in the case of FIG. 5 Ls1 is it.
[0014]
And when destroying the to-be-destructed object 4, in order to explode the longest distance L _C from the metal thin wire 2 to the end of the destructive substance 7, the charging energy W _C (Joule) to the capacitor 14, and the destructive substance 7 the relationship between the required explosion conditions (impact force thin metal wire 2 occurs when the melt _{vaporization) P b (kg · f /} cm 2), under Symbol formula (b)
L _C ≦ 8 · W _C / P _b (b)
Set to satisfy.
[0015]
Here, the charging energy W _c in the above formula (b) is based on the following formula (c).
W _c = (1/2) · C · V _c ² (c)
In the above equation (c), C: capacitor capacity (F), V _c : capacitor charge voltage (V).
[0016]
Since the explosion condition P _b of the destructive substance 7 is determined by the destructive substance 7 to be used, the charging energy W _c , that is, the capacitor capacity C and the capacitor charge voltage V _c are set so as to satisfy the above equation (b). Then, the capacitor 14 is charged with a necessary amount, the discharge switch 13 is turned on, and charging energy is supplied from the capacitor 14 to the metal thin wire 2 in a short time.
[0017]
Then, the fine metal wire 2 is rapidly melted and vaporized, and the explosion condition P _b acts on the destructive material 7 and, as described above, L _c ≦ 8 · W _c / P _b is set. Completely explode, and the explosive force destroys or weakens the destructible 4.
[0018]
Here, FIGS. 6 and 7 show generation patterns of impact force F when the fine metal wires 2 are melted and vaporized. A portion A indicated by a solid line in the figure is a range where an explosion occurs when the impact force F acts.
[0019]
FIG. 8 shows the relationship between the distance L away from the fine metal wire 2 and the impact force F. From this graph, it can be seen that the impact force F is almost inversely proportional to the distance L away from the fine metal wire 2.
[0020]
FIG. 9 is a graph showing the relationship between the impact force F and the charging energy W _c at a position 1 cm away from the thin metal wire 2, and it can be seen that the impact force F and the charging energy W _c are in a proportional relationship. That is, when the impact force F is generated with the charging energy W _c , the impact force F at a position 1 cm away from the thin metal wire 2 is expressed by the following equation (d):
F = 8 · W _c (d)
It becomes.
[0021]
From this equation (d), the impact force F at a position away from the metal thin wire 2 by the distance L is the following equation (e): F = 8 · W _c / L (e)
It becomes.
[0022]
The coefficient [8] is an average value obtained from experiments, and the value varies within the range of [6 to 10].
From the above formulas (d) and (e), when the impact force F when the fine metal wire 2 is melted and vaporized is the explosion condition _Pb , the range of the destructive substance 7 exploding by the explosion condition _Pb is shown in FIG. 6 and the distance from the thin metal wire 2 shown in FIG. 7 (hereinafter referred to as “explosion radius”) L _b , these relationships are expressed by the following formula (f) L _b = 8 · W _c / P _b (f)
It becomes.
[0023]
And, in the destruction method according to the embodiment of the present invention, as shown in the above equation (b), L _c ≦ 8 · W _c / P _b is set, so the relationship with the above equation (f) Therefore, when L _c ≦ L _b and the impact force F when the metal thin wire 2 is melted and vaporized is the explosion condition P _b , the explosion condition P _b acts on all of the destructive substances 7 and explodes.
[0024]
Next, a specific example using nitromethane as the destructive substance 7 will be described with reference to FIG. 90 cc (about 100 g) of nitromethane was filled in a breaker container 6 having an inner diameter of 40 mm, and a thin metal wire 2 was placed in the center of the breaker container 6 and immersed in nitromethane with L _c = 2 cm.
[0025]
Since the explosion conditions P _b of nitromethane is about ^{70000kg · f / cm 2 (70ton} · f / cm 2), from the (f) type, the charge energy W _c needed to detonate all nitromethane, 17500Joule This is necessary. Therefore, the capacitor capacity was set to 500 μF, and the battery was discharged as charging energy W _c : 20250 Joule (capacitor charging voltage V _c : 9000 V). As a result, it was confirmed that all of the nitromethane in the destruction container 6 had exploded, and the same destructive power as that obtained when 100 g of titanite was used was obtained.
[0026]
FIG. 10 is a graph showing the relationship between the current Id discharged to the fine metal wire 2, the generated impact force F, and the time t, but a short circuit occurs while the fine metal wire 2 is connected between the electrodes 9. A transient current is generated which is determined by the circuit impedance indicated by the two-dot chain line in FIG. However, when the electric energy that melts and vaporizes the metal thin wire 2 is supplied, the metal thin wire 2 is disconnected and the circuit is also disconnected. Therefore, the current Id is indicated by a solid line. In addition, it can be seen from FIG. 11 that an impact force F is generated when the fine metal wire 2 is broken.
[0027]
In the embodiment of the present invention, the destruction container 6 is filled with the explosive destructive substance 7, and the thin metal wire 2 connected to the electrode 9 is used instead of the detonator. Even if an electric current or the like is generated, the thin metal wire 2 is not broken unless the electric energy sufficient to melt and vaporize the metal thin wire 2 is supplied, so that the destructive substance 7 does not explode, and thus the destruction device 1 is safe. It can be handled underneath and can be safely destroyed.
[0028]
According to the use of the impact force F generated when the fine metal wire 2 is melted and vaporized, conventionally, a large impact force (approximately 70000 kg · f / cm ² or more is required. Nitromethane, which was not used because it does not explode, can be used if it is not applied. In this case, the explosive power equivalent to that of titanite is obtained, and the destructible object 4 is reliably destroyed or weakened. Can be made.
[0029]
In addition, since the dynamite used in the past is selected and used each time with the destructive force required to destroy the object 4 to be destroyed, the response to the situation at the site is poor and the destruction is more than necessary. It may be necessary to use dynamite having a force, and in this case, it was uneconomical. However, according to the destructive device and the destructive method of the embodiment of the present invention, the destructive force is set as required on site. Therefore, the response to the situation in the field is improved, and there are many cases where it is economically advantageous as compared with the case of using dynamite.
[0030]
In the above embodiment, nitromethane is shown as an example of the explosive destructive substance 7, but is not limited thereto. For example, the explosive compound described in “Chemical Handbook” edited by “The Chemical Society of Japan” , Methyl nitrate, nitro compounds, etc. may be used. In this case, the charging energy _Wc is adjusted so as to generate an impact force corresponding to each substance, and the fine metal wire 2 is melted and vaporized. All the destructive material 7 can explode by impact force, and the to-be-destructed object 4 can be surely destroyed or weakened, and even if a leakage current of peripheral equipment is generated, the fine metal wire 2 is melted and vaporized. Since the destructive substance 7 does not explode unless only the electric energy is supplied, it can be handled safely.
[0031]
Moreover, in the said embodiment, although the metal fine wire 2 was used as an example of a melt vaporization substance, it is not limited to this, For example, electroconductive materials, such as a metal small piece and carbon, are made into appropriate shape. In this case as well, electric energy is supplied to the molten vaporized material to cause it to melt and vaporize, and the explosive destructive material 7 is exploded by the impact force F at that time. The destructive material 4 can be surely destroyed or weakened.
[0032]
Moreover, in the said embodiment, although the destruction container 6 was used so that it might mount | wear with the mounting hole 5 formed in the to-be-destructed object 4, it is not limited to this, The destruction container 6 of the to-be-destructed object 4 is used. It may be applied to the surface, or may be used by being hung with a suitable holding tool and arranged near the surface of the object 4 to be destroyed. In this case, the same effect as that of the above embodiment can be obtained. obtain.
[0033]
In the above embodiment, the destruction probe P is manufactured and attached to the attachment hole 5. However, the invention is not limited to this, and the destruction material 7 can be directly used without using the destruction container 6. In the mounting hole 5, so that the vaporized substance such as the thin metal wire 2 is immersed in the destructive substance 7, and the destructible substance 7 is exploded by supplying predetermined electric energy to the molten vaporized substance. Even in this case, the to-be-destructed object 4 can be safely destroyed as in the above embodiment.
[0034]
Furthermore, by adjusting the destructive force in the destructive device of the above embodiment, this destructive device can be used as a seismic source device for physical exploration.
[0035]
【The invention's effect】
As is apparent from the above description, the present invention rapidly supplies the charging energy to rapidly melt and vaporize the molten vaporized substance, and explode the destructive substance around the molten vaporized substance by the impact force generated at that time. As it destroys the debris by molten vapors is not explosive breaking substance as long as electric energy enough for melting vaporized is not supplied, therefore, Ru can be on improvement of safety in the handling of the device . Further, required to detonate the maximum distance L _C at disruption was Shitsuma from the molten vapors, charge energy W _C of the capacitor, the disruption agent is a impact force molten vapors are generated when the molten vaporizing the relationship between the explosion conditions P _b, by which is set so as to satisfy the _{L C ≦ 8 · W C /} P b, are sealed around the melting vapors by the impact force generated in association with the molten vaporization of molten vapors When destructing an object by detonating the explosive destructive substance, all destructive substances explode with a single impact, so no destructive substance remains.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing a configuration of a destructive probe according to an embodiment of the present invention.
FIG. 2 is an overall schematic configuration diagram showing the entire destruction apparatus.
FIG. 3 is a partial cross-sectional view showing an example of the arrangement of thin metal wires in the fracture probe.
FIG. 4 is a partial cross-sectional view showing another example of the arrangement of the fine metal wires in the fracture probe.
FIG. 5 is a partial cross-sectional view showing another example of the arrangement of the fine metal wires in the fracture probe.
FIG. 6 is a front view showing a generation pattern of impact force when a fine metal wire is similarly melted and vaporized.
FIG. 7 is a plan view showing a generation pattern of an impact force when a fine metal wire is similarly melted and vaporized.
FIG. 8 is a graph showing the relationship between the impact force when the fine metal wire is vaporized and the distance away from the fine metal wire.
FIG. 9 is a graph showing the relationship between the impact force when the metal thin wire is melted and vaporized and the charging energy to the capacitor.
FIG. 10 is a graph showing the relationship between the current discharged to the fine metal wire, the generated impact force and time.
FIG. 11 is a graph showing the relationship between the impact force generated after the metal wire is broken and the charging energy.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Destructive device 2 Metal thin wire 4 Destroyed object 5 Mounting hole 6 Destruction container 7 Destruction material 9 Electrode 10 Electrical energy supply circuit 11 Power supply device 12 Charge control circuit 13 Discharge switch 14 Capacitor P Destruction probe L _c Destruction material from metal thin wire The longest distance to the edge of

Claims (2)

By the molten vapors which are connected to the pair of electrodes in the destruction sealed containers disruption material arranged to supply the charging energy to charge the capacitor with respect to the molten vapors in a short time, the molten vapors In a destructive method of destroying the object to be destroyed by the impact force generated along with the melt vaporization of this molten vaporized substance ,
When destroying the object debris by exploding the destruction substance explosive sealed around the melting vapors by the impact force,
Longest distance L _C at the disruption was Shitsuma from the molten vapors, charge energy W _C of the condenser, the molten vapors that detonate the breaking substance is an impact force generated when the molten vaporizing the relationship between the explosion conditions _{P b} required to, the following formula (b)
L _C ≦ 8 · W _C / P _b (b)
The destruction method characterized by setting to satisfy. The destruction method according to claim 1, wherein the destruction material is nitromethane.

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