JP2006046000A - Method for obtaining crushing specifications of electric discharge crushing device, and computer readable recording medium - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for obtaining crushing specifications of a Thundermite for accurately obtaining the crushing specifications required for crushing, and to provide a computer readable recording medium. <P>SOLUTION: A crushing coefficient of the Thundermite is obtained by operation from a power coefficient of the Thundermite and a parameter including free surface number efficiency obtained beforehand from an experimental value corresponding to the number of free surfaces of a crushed object. At least one of the spacing of holes, the length of a resistance wire, and the length of the holes is obtained by operation from the crushing coefficient of the Thundermite and the preset charged amount of fluid material for crushing. Or the charged amount of fluid material for crushing is obtained by operation from the crushing coefficient of the Thundermite and at least one of the preset spacing of the holes, the length of the resistance wire and the length of the holes. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a crushing specification (a hole for loading a cartridge) of an electric discharge crushing apparatus (hereinafter sometimes referred to as “Sundermite (registered trademark)”) suitable for crushing, for example, an underground concrete ground of a concrete building by blasting. And the length of the resistance wire accommodated in the cartridge, or the loading amount of the crushing fluid substance loaded in the cartridge), and a computer-readable recording medium on which a program for executing the method is recorded About.

  When crushing underground ground or walls such as concrete buildings with explosives, use sanderite as described in Japanese Patent No. 2894940 rather than cherry dynamite that crushes by the impact force when explosives are blown up Is preferred. This is because the sanderite is precharged by digging a plurality of holes in a row or vertically and horizontally in the object to be crushed, and putting a resistance wire made of a fine metal wire and a cartridge containing a fluid material for crushing into each hole. The current is instantaneously passed from the capacitor to the resistance wire, the resistance wire is instantaneously melted and evaporated, the fluid for crushing is vaporized by the heat, and the surrounding crushed material is crushed by the pressure of the gas. This thundermite has an impact pressure of about 1/10 compared to the commonly used cherry dynamite, which can reduce the vibrations and sounds that are given to the surroundings during crushing, and can reduce inconvenience to the neighborhood. is there. In the past, when crushing using this sanderite, the above-mentioned crushing parameters were set depending on the intuition of an expert and the blasting operation was performed.

Japanese Patent No. 2894940

  As mentioned above, the crushing parameters have been set by relying on the operator's intuition, so that the amount of charge becomes excessive or the gap between the holes is too small, resulting in excessive blasting and waste of thunderite. Consumed or disturbed by the propagation of sound and vibration to the neighborhood, and on the contrary, the amount of charge is too small or the gap between holes is too large, and post-processing such as removal of crushing waste is difficult due to insufficient crushing The problem of becoming.

  In view of the above problems, the present invention can accurately determine the pulverization specifications necessary for pulverization, and therefore, the waste of the electric discharge crushing device due to excessive charge amount of the electric discharge crushing device and the occurrence of inconvenience to the neighborhood, Alternatively, an object of the present invention is to provide a method for obtaining a shredding specification of a discharge shredding device and a computer-readable recording medium that can eliminate a blast failure due to insufficient charge amount.

According to the method for obtaining the crushing specifications of the electric discharge crushing apparatus according to claim 1, a plurality of holes are dug at equal intervals in the object to be crushed, and a resistance wire made of a fine metal wire and a cartridge containing a fluid material for crushing are placed in each hole. The discharge crushing crushes the object to be crushed by flowing an electric current instantaneously from the pre-charged capacitor to the resistance wire to instantaneously melt and evaporate the resistance wire and vaporize the crushing fluid with the heat. In the method of determining the crushing specifications of the device,
Obtain the crushing coefficient of the electric discharge crushing device from the parameters including the power factor of the electric discharge crushing device and the free surface number efficiency obtained in advance from the experimental values corresponding to the number of free surfaces of the object to be crushed,
By calculating at least one of the interval between the holes, the length of the resistance wire, and the length of the hole from the crushing coefficient of the electric discharge crushing device and the charge amount of the fluid material for crushing set in advance. It is characterized by seeking.

The method for obtaining the crushing specifications of the electric discharge crushing device according to claim 2 is as follows:
The storage means stores the parameters including the power coefficient of the electric discharge crushing device and the free surface number efficiency obtained in advance from experimental values corresponding to the number of free surfaces of the object to be crushed, and the amount of charge of the fluid material for crushing. Input processing
Calculates the crushing coefficient of the electric discharge crusher from the parameters including the power coefficient of the electric discharge crusher stored in the storage means and the free surface number efficiency obtained in advance from experimental values corresponding to the number of free surfaces of the object to be crushed. The arithmetic processing obtained by
From the crushing coefficient of the electric discharge crushing device obtained by this arithmetic processing and the charge amount of the crushing fluid substance stored in the storage means, the distance between the holes, the length of the resistance wire, and the length of the holes A calculation process for calculating at least one of the calculation values;
And an output process for outputting at least one of the interval between the holes, the length of the resistance wire, and the length of the hole obtained by the calculation process.

The method for obtaining the crushing specifications of the electric discharge crushing apparatus according to claim 3 is to dig a plurality of holes at equal intervals in an object to be crushed, and to put a resistance wire made of a fine metal wire and a cartridge containing a fluid material for crushing in each hole. The discharge crushing crushes the object to be crushed by flowing an electric current instantaneously from the precharged capacitor to the resistance wire to instantaneously melt and evaporate the resistance wire and vaporize the crushing fluid with the heat. In the method of determining the crushing specifications of the device,
Obtain the crushing coefficient of the electric discharge crushing device from the parameters including the power factor of the electric discharge crushing device and the free surface number efficiency obtained in advance from the experimental values corresponding to the number of free surfaces of the object to be crushed,
By calculating at least one of the preset interval between the holes, the length of the resistance wire and the length of the hole, and the crushing coefficient of the electric discharge crushing device, the charge amount of the fluid material for crushing is calculated. It is characterized by seeking.

The method for obtaining the crushing specifications of the electric discharge crushing device according to claim 4 is as follows:
Parameters including the power coefficient of the electric discharge crushing device and the free surface number efficiency obtained in advance from experimental values corresponding to the number of free surfaces of the object to be crushed, as well as the distance between the holes, the length of the resistance wire, and the holes An input process for storing at least one of the lengths in the storage means;
The crushing coefficient of the electric discharge crusher is calculated from parameters including the power coefficient of the electric discharge crusher stored in the storage means and the free surface number efficiency obtained in advance from experimental values corresponding to the number of free surfaces of the object to be crushed. A calculation process obtained by calculation;
From the interval between the holes, the length of the resistance wire, and the length of the hole stored in the storage means, and the crushing coefficient of the electric discharge crushing device obtained by the arithmetic processing, the crushing A calculation process for calculating the charge amount of the fluid substance for use by calculation,
And an output process for outputting the amount of charge of the crushing fluid substance obtained by the calculation process.

  According to a fifth aspect of the present invention, there is provided a computer-readable recording medium in which a program for performing the above-described processes in the method for obtaining the shredding specifications of the electric discharge shredding device according to claim 2 or 4 is recorded.

  According to the present invention, the crushing coefficient of the electric discharge crushing apparatus is obtained by calculation using the free surface number efficiency obtained in advance from the experimental value corresponding to the number of free surfaces of the object to be crushed, so Crushing specifications that match the actual situation can be obtained. For this reason, by using this crushing specification, the ideal ideal crushing situation can be obtained, so there is no waste of discharge crushing device due to excessive charge amount of discharge crushing device or blast failure due to insufficient charge amount, In addition, it is possible to reduce inconvenience to the neighborhood due to sound and vibration due to excessive crushing.

  FIGS. 1A and 1B are a cross-sectional view and a plan view, respectively, for explaining a sanderite. In these drawings, 1 is a material to be crushed, 2 is a hole provided in the material 1 to be crushed, 3 is a cartridge placed in the hole 2, 4 is a fluid material for crushing contained in the cartridge 3, As the fluid material, water and other fluid materials for crushing can be used. Reference numeral 5 denotes a resistance wire made of a fine metal wire such as copper or aluminum provided in the crushing fluid substance 4, and the resistance wire 5 has a compact structure such as a coil shape. The resistance wire 5 is submerged. 6 is a capacitor charged by the power supply 7 and energizes the resistance wire 5, 8 is an electrode connected to both ends of the resistance wire 5, 9 is a lead wire connected to the electrode 8, and 10 is a capacitor connected to the resistance wire 5 6 is a switch for discharging from 6. As illustrated, each resistance line 5 is connected in parallel to the capacitor 6. 11 is a stuffing filled in the entrance of the hole 2, and mortar, sand + clay, sand + sediment or water is used. In some cases, the filling 11 is not used. In this example, the holes 2 are arranged in one row, but the holes 2 may be arranged vertically and horizontally.

Here, the amount of charge of the fluid material 4 for crushing required for crushing is L (cc), the basic crushing coefficient of thunderite is C, the distance between the holes 2 is D (m), and the length of the resistance wire 5 is W ( m) When the perforation length is H (m), the Hauser equation shown in the equation (1) is established.
L = C / D / W / H (1)
Here, W = a · D (a is a constant and is set to, for example, 1), H = b · W (b is a constant, and b is, for example, 1. in order to disperse crushed debris in the longitudinal direction of the hole 2. (5)), so equation (1) is
L = a ² · b · C · D ³ (2)
Is established. Here, when a = 1 and b = 1.5 are set,
L = 1.5 · C · D ³ (3)
Is established.

Therefore, in equation (3), when the distance D between the holes 2 (or the length W of the resistance wire 5 or the length H of the hole 2) is set, the amount of charge L can be obtained by calculation if the basic crushing coefficient C is known. Can do. Conversely, from equation (4), the distance D between the holes 2, the length W (= D) of the resistance wire 5, and the length H of the hole 2 (= 1.5D = 1. 5W).
D = {L / (1.5 · C)} ^1/3 (4)
In the formulas (3) and (4), the basic crushing coefficient C of the sanderite can be calculated using the Hauser formula of the formula (5).
C = e · g · d · l · f (w) (5)
Here, e is a power coefficient of the thunderite, and is a coefficient set with respect to the power coefficient of another dynamite, for example, the cherry dynamite as described later. g is a drag coefficient, which is obtained in advance based on the compressive strength determined by the type of the object to be crushed (concrete, rock, etc.), and is a value used by quoting from the data. d is a filling coefficient, and is a value set according to the type of the filling 11. l is a charge coefficient, which is a value that varies depending on how much explosive (fluid material 4 for crushing) is loaded into the hole 2 (less, normal, or excess). f (w) is a degree-of-breakage coefficient, and is a value set corresponding to the finished state by crushing (the value is increased as the material is strongly crushed).

  In the equation (5), g, d, l and f (w) can be known or arbitrarily set. Therefore, if the basic power coefficient e is known, the basic crushing coefficient C can be calculated. As a result, (3), From the formula (4), the crushing specifications of the sanderite can be obtained.

The basic power coefficient e of the thunderite can be obtained for the cherry dynamite as a reference from the following equation (6).
1 / e = (P / P0) .0.15+ (f / f0) .0.85 (6)
Here, P is the impact pressure of nitromethane, the material of cherry dynamite, P0 is the impact pressure of cherry dynamite, D is the explosive reaction rate (m / sec), f is the explosive power of nitromethane, and f0 is the explosive power of cherry dynamite. is there.

Further, the nitromethane impact pressure P in the equation (6) can be obtained from the explosion reaction rate D and the chemical specific gravity Δ by the equation (7).
P = 0.000424 · D ² · Δ (1-0.543 · Δ + 0.193 · Δ ² ) / 1000 (7)
According to the power factor calculation formula for the explosives described above, the basic power factor of thunderite is obtained, and e = 1.10 as shown in Table 1. For reference, Table 1 shows various parameters and power coefficients for other types of explosives.

表１から分かるように、サンダーマイトの爆速は桜ダイナマイトの約４割弱、衝撃圧は桜ダイナマイトの約1割程度となるものの、威力係数は桜ダイナマイトよりやや大きい程度であるから、サンダーマイトによる破砕作業は、振動や音が小さく、都市部等における破砕作業に好適であることが分かる。

As can be seen from Table 1, although the explosion speed of Thunderite is about 40% that of Sakura Dynamite and the impact pressure is about 10% of that of Sakura Dynamite, the power coefficient is slightly higher than that of Sakura Dynamite. It can be seen that the crushing work is suitable for crushing work in urban areas and the like because vibration and sound are small.

  The cartridges 3 have charge amounts of 10 cc, 15 cc, 30 cc, and 50 cc, but in each type of cartridge, using the basic power coefficient e (= 1.10) obtained by the equation (6), FIG. 2 shows the results obtained by determining the basic crushing coefficient C obtained by the equation (5) with respect to the compressive strength of various objects to be crushed (this compressive strength is converted into the drag coefficient g). In this calculation, the filling coefficient d, the charge coefficient l, and the destruction degree coefficient f (w) were set to 1.

Thus, using the basic crushing coefficient C obtained for each compressive strength,
Hole length H = 1.5 × hole interval D, hole interval D = resistance wire length W, and charge amount is 10 cc, that is, when a 10 cc cartridge is used, hole interval D and resistance wire length Table 2 shows the results of determining W, the hole length H, and the crushed amount (m ³ ). Tables 3, 4 and 5 show the crushing specifications and crushing amounts when 15 cc, 30 cc and 50 cc cartridges are used under the same conditions as described above.

  In each cartridge thus calculated, the amount of crushing when the compressive strength is 107.8 MPa and the maximum amount of crushing actually measured by the inventor at the same crushing strength were compared. It became as shown in. As shown in FIG. 3, it can be seen that the crushed amount obtained by calculation and the measured maximum crushed amount are greatly different.

  The cause of the difference between the calculated value of the crushing amount and the actually measured value is presumed to be that the crushing coefficient calculated from the actually measured value is different from the basic crushing coefficient C obtained by the calculation of the equation (5). It is presumed that the basic crushing coefficient C obtained by calculation has a different value because the crushing resistance generated by the number of free surfaces is not taken into consideration.

  Therefore, as shown in FIG. 4 and FIG. 5, resistance to crushing at 2 free faces and 6 free faces was obtained. In the case of the number of two free surfaces in FIG. 4, the surface near the center of the hole 2 provided in the object 1 is only one side other than the surface, and the distance to this one side is equal to the distance D between the holes 2. It is. Further, in the case of the number of 6 free surfaces in FIG. 5, the distance from the center of the hole 2 provided in the object to be crushed 2 to the surrounding four side surfaces and the bottom surface is equal to the distance D between the holes 2. In this example, four holes 2 are provided. In general, four or eight holes 2 are provided at the same time, and cartridges inserted into these holes are blown simultaneously. Or there may be simultaneous blasts with numbers other than 8.

As described above, the present inventors should consider that the method for obtaining the crushing specification using the basic crushing coefficient C obtained from the equation (5) has a large error and that the crushing resistance varies depending on the number of free surfaces. In the case where the number of heads is 2 and 6, the one having free surface number efficiency indicating the crushing resistance is set from the crushing amount obtained by the experiment, and the compression strength of the object to be crushed is about 107 for the above four types of cartridges. This free surface number efficiency h was determined by the calculation of equation (8) from the maximum crushed amount in the case of 8 MPa.
Vx / V = 1 / h (8)
Here, Vx is a crushing amount obtained by experiment, and V is a crushing amount obtained by calculation as shown in Tables 1 to 5. The free surface number efficiency h obtained by this calculation is shown in FIG.

When the crushing coefficient obtained by the experiment is Cx, the equation (9) is established with respect to the basic crushing coefficient C and the free surface number efficiency h.
Vx / V = C / Cx (9)
From equations (8) and (9)
C / Cx = 1 / h (10)
From the equations (5) and (10),
Cx = e · g · d · l · f (w) · h (11)
Is established. Therefore, the crushing coefficient Cx actually used can be obtained from the equation (11) using the free surface number efficiency h.

  FIG. 7 shows the result of calculating the crushing coefficient Cx for other compression strengths from the crushing coefficient Cx when the compressive strength is 107.8 MPa for each cartridge from the equation (11) in the case of two free surfaces. As can be seen from FIG. 7, this crushing coefficient Cx is smaller than the basic crushing coefficient C in the case of the calculation shown in FIG.

  FIG. 8 shows the result of calculating the crushing coefficient Cx for other compression strengths from the crushing coefficient Cx when the compressive strength is 107.8 MPa for each cartridge from the equation (11) in the case of 6 free surfaces. In the case of the number of 6 free faces, the value is smaller than the crushing coefficient Cx in the case of the calculation shown in FIG.

FIG. 9 shows the amount of crushing in consideration of the free surface number efficiency h in two free surfaces and the maximum amount of crushing when actually crushing for each of the cartridges in two free surfaces having a compressive strength of 107.8 MPa. It is a figure which shows the result compared. As can be seen from FIG. 9, the crushing coefficient Cx is obtained by calculation in consideration of the free face number efficiency h obtained in consideration of the number of free faces, and is determined in advance from the crushing coefficient Cx by the equation (12). The exact hole interval D is obtained from the amount of charge L (10 cc, 15 cc, 30 cc, 50 cc), and the resistance wire length W and the hole length H having a fixed relationship with the hole interval D are (12 ) And (13).
D = W / a = H / (a · b) = {L / (a ² · b · Cx)} ^1/3 (12)
In equation (12), if a = 1 and b = 1.5, equation (12) is as follows.
D = W = H / 1 · 5 = {L / (1.5 · Cx)} ^1/3 (13)
On the contrary, when the charge amount L can be set finely, the charge amount L is obtained from the hole interval D, the resistance wire length W and the hole length H by the equation (14), and a suitable charge amount is obtained. The dose L can be determined.
L = Cx · D · W · H = a ² · b · Cx · D ³ = (b / a) · Cx · W ³
= Cx · H ³ / (a · b ² ) (14)
If the coefficients a = 1 and b = 1.5, the equation (14) can be changed to the equation (15).
L = 1.5 · Cx · D ³ = 1.5 · Cx · W ³ = 0.44 · Cx · H ³ (15)
FIG. 10 shows a function of an embodiment of the present invention for determining the hole distance D, the resistance wire length W and the hole length H by a computer using the equation (12) or (13). It is a block diagram. In FIG. 10, the input means 20 is realized by a computer keyboard, the storage means 21 is realized by a memory attached to the computer, and the first and second calculation means 22 and 23 are realized by a CPU of the computer. The output means 24 is realized by a computer printer or a display device.

  The input means 20 includes a free surface number efficiency h determined by the above-described experiment, a power coefficient e corresponding to the compressive strength, a drag coefficient g, a filling coefficient d, a charge coefficient l, a destruction coefficient f (w), a charge amount (Any one of 10 cc, 15 cc, 30 cc, and 50 cc) is input and stored in the storage means 21.

  The first calculation means 22 uses the parameters h, e, g, d, l, and f (w) stored in the storage means 21 to obtain the crushing coefficient Cx using the equation (11). .

  The second calculating means 23 calculates the hole according to the equation (12) from the crushing coefficient Cx obtained by the first calculating means 22 and the charge amount L and the coefficients a and b stored in the storage means 21. Distance D, resistance wire length W, and hole length H. When a fixed number is set for the coefficients a and b, it is not necessary to input these coefficients a and b, and the distance D between the holes, the length W of the resistance wire, and the length of the holes according to equation (13) and the like. H may be obtained. The hole spacing D, the resistance wire length W, and the hole length H thus obtained are output by the output means 24 (display device and printer).

  As a parameter input by the input means 20, a fixed value may be set for one or all of the filling coefficient d, the charge coefficient l, and the destruction degree coefficient f (w), and the input may be omitted. Further, once the power coefficient e is stored, it is not necessary to input it again. The drag coefficient g is input according to the compressive strength of the object to be crushed.

  The input processing for storing such parameters in the storage means 21, the arithmetic processing by the first and second arithmetic means 22, 23, and the output processing by the output means 24 are advanced by a program stored in the computer. Is recorded in a recording medium, and the program stored in the recording medium can be used by reading it in various computers.

  FIG. 11 is a diagram for obtaining the charge amount L from the hole interval D (or the resistance wire length W and hole length H) by a computer using the equation (14) or (15). It is a functional block diagram which shows other embodiment of this invention. In FIG. 11, the input means 20, the storage means 21, the first and second calculation means 22, 23A, and the output means 24 are realized by a computer as described above.

  The input means 20 is different from the above-described embodiment in that a hole interval D is input instead of the charge amount L. It should be noted that the hole interval D, the resistance wire length W, and the hole length H may be input. In this case, the coefficients a and b need not be input.

  The first calculation means 22 uses the parameters h, e, g, d, l, and f (w) stored in the storage means 21 as in the above embodiment, and crushes using the above equation (11). The coefficient Cx is obtained.

  The second calculating means 23A is implemented by the above equation (14) from the crushing coefficient Cx obtained by the first calculating means 22, the hole interval D stored in the storage means 21, and the coefficients a and b. Determine the dose L. When a fixed number is set for the coefficients a and b, it is not necessary to input these coefficients a and b, and the charge amount L may be obtained by equation (15) or the like.

  In this way, by calculating the crush factor of thunderite by calculation using the free surface number efficiency obtained in advance from experimental values corresponding to the number of free surfaces of the material to be crushed, Applicable crushing specifications can be determined. Therefore, by using this crushing specification, the target crushing situation can be obtained. Thunderite may be wasted due to excessive amount of thundermite charge or too small gap between holes, and insufficient quantity of charge or excessive gap between holes. It is possible to eliminate crushing defects due to crushing, and to reduce inconvenience to the neighborhood due to sound and vibration due to excessive crushing.

(A), (B) is sectional drawing and a top view explaining a Thundermite, respectively. It is a related figure in various charge amounts with the compression strength obtained by (5) Formula, and a basic crushing coefficient. It is a comparison figure in the various charge amount with the calculated value of the crushing amount obtained by (5) Formula, and the actual measurement maximum crushing amount. It is explanatory drawing of crushing in 2 free surface numbers. It is explanatory drawing of crushing in 6 free surface numbers. In this Embodiment, it is a relationship figure with the free surface number efficiency with respect to the free surface number obtained by experiment. In this Embodiment, it is a figure which shows the crushing coefficient in various compressive strengths calculated | required from the measured value in 2 free surfaces about each charge amount. In this Embodiment, it is a figure which shows the crushing coefficient in various compressive strengths calculated | required from the measured value in 6 free surfaces about each charge amount. It is a comparison figure of the calculated value of the crushing quantity led by the present invention, and the maximum crushing quantity of the actual measurement value. It is a functional block diagram which shows one Embodiment of the apparatus which implements the method of this invention. It is a functional block diagram which shows one Embodiment of the apparatus which implements the method of this invention.

Explanation of symbols

1: object to be crushed, 2: hole, 3: cartridge, 4: fluid substance for crushing, 5: resistance wire, 6: capacitor, 7: power supply, 8: electrode, 9: lead wire, 10: switch, 11: padding

Claims (5)

A plurality of holes are dug at equal intervals in the object to be crushed, a resistance wire made of a fine metal wire and a cartridge containing a fluid material for crushing are placed in each hole, and an electric current is instantaneously applied to the resistance wire from a precharged capacitor. In the method for obtaining the crushing specifications of the electric discharge crushing apparatus for crushing the material to be crushed by flowing and evaporating the resistance wire instantaneously and evaporating the crushing fluid with the heat,
Calculate the crush factor of thunderite by calculation from the parameters including the power factor of thunderite and the free surface number efficiency obtained in advance from experimental values corresponding to the number of free surfaces of the object to be crushed,
From the crush factor of the sanderite and a preset charge amount of the fluid material for crushing, at least one of the interval between the holes, the length of the resistance wire, and the length of the hole is obtained by calculation. A method for obtaining a crushing specification of an electric discharge crusher characterized by the above. In the method of calculating | requiring the crushing specification of the electric discharge crushing apparatus of Claim 1,
The storage means stores the parameters including the power coefficient of the sanderite and the free surface number efficiency obtained in advance from experimental values corresponding to the number of free surfaces of the object to be crushed, and the amount of charge of the fluid material for crushing. Input processing,
Calculates the crushing coefficient of the electric discharge crusher from the parameters including the power coefficient of the electric discharge crusher stored in the storage means and the free surface number efficiency obtained in advance from experimental values corresponding to the number of free surfaces of the object to be crushed. The arithmetic processing obtained by
From the crushing coefficient of the electric discharge crushing device obtained by this arithmetic processing and the charge amount of the crushing fluid substance stored in the storage means, the interval between the holes, the length of the resistance wire, and the length of the hole An arithmetic process for calculating at least one of
An output process for outputting at least one of the interval between the holes, the length of the resistance wire, and the length of the hole obtained by the calculation process. How to ask. A plurality of holes are dug at equal intervals in the object to be crushed, a resistance wire made of a fine metal wire and a cartridge containing a fluid material for crushing are placed in each hole, and an electric current is instantaneously applied to the resistance wire from a precharged capacitor. In the method for obtaining the crushing specifications of the electric discharge crushing apparatus for crushing the material to be crushed by flowing and evaporating the resistance wire instantaneously and evaporating the crushing fluid with the heat,
Obtain the crushing coefficient of the electric discharge crushing device from the parameters including the power factor of the electric discharge crushing device and the free surface number efficiency obtained in advance from the experimental values corresponding to the number of free surfaces of the object to be crushed,
By calculating at least one of the preset interval between the holes, the length of the resistance wire and the length of the hole, and the crushing coefficient of the electric discharge crushing device, the charge amount of the fluid material for crushing is calculated. A method for obtaining a crushing specification of an electric discharge crushing device characterized in that it is obtained. In the method of calculating | requiring the crushing specification of the electric discharge crushing apparatus of Claim 3,
Parameters including the power coefficient of the electric discharge crushing device and the free surface number efficiency obtained in advance from experimental values corresponding to the number of free surfaces of the object to be crushed, as well as the distance between the holes, the length of the resistance wire, and the holes An input process for storing at least one of the lengths in the storage means;
The crushing coefficient of the electric discharge crusher is calculated from parameters including the power coefficient of the electric discharge crusher stored in the storage means and the free surface number efficiency obtained in advance from experimental values corresponding to the number of free surfaces of the object to be crushed. A calculation process obtained by calculation;
From the interval between the holes, the length of the resistance wire, and the length of the hole stored in the storage means, and the crushing coefficient of the electric discharge crushing device obtained by the arithmetic processing, the crushing A calculation process for calculating the charge amount of the fluid substance for use by calculation,
And an output process for outputting the amount of charge of the fluid material for crushing obtained by the calculation process. 5. A computer-readable recording medium in which a program for performing each of the processes in the method for obtaining a crushing specification of an electric discharge crushing apparatus according to claim 2 or 4 is recorded.

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