KR101515919B1 - Underwater Steel Cutting Method using the Shape Charge Loading Container and its Attachment Method - Google Patents

Abstract

The present invention relates to forming an explosive charge loading container to cut underwater steel, and an underwater steel cutting construction method using an attachment method. The forming explosive charge loading container to cut the underwater steel (10) comprises: a charge loading container body (11) having a space wherein a side is open; a forming explosive (12) installed in a space inside the charge loading container body; a cap (13) coupled to an opening portion of the charge loading container body; and a magnetism adsorption means which attaches the charge loading container body along a predetermined cutting line of a steel material (20) to be cut.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a container for an explosive charge for cutting an underwater steel material and an underwater steel material cutting method using the same,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a steel material cutting method for rescue and relief of a ship which has been submerged in water due to repair or reinforcement of an underwater structure or disaster, Which is used to cut a steel material in water quickly and safely by attaching and exposing the vessel to a position to be cut within a short time, and a method for cutting an underwater steel material using the same.

The underwater steel material cutting method is a steel material cutting for maintenance and reinforcement of a underwater structure or a ship, and the like, and such an underwater steel material cutting method includes an oxygen arc cutting and an air grinding cutting.

However, there is a need for an underwater steel cutting method using a molding explosive capable of safer and rapid treatment due to frequent occurrence of safety accidents by underwater workers due to deterioration of gas explosion and cutting efficiency.

On the other hand, as a technique for cutting steel, there is a cutting technique using molding explosives.

Molding explosives are high-performance explosives such as high performance explosives such as hexogen (RDX), pentat (PETN), and hexonitrostylbenz (HNS), and V-shaped metals such as copper (Cu), silver (Ag) Liner explosives are explosives used for cutting and penetrating steel in aerospace and special weapon fields.

The cutting principle of the molding explosives is as follows. First, the metal fine particles (slag) generated in the metal liner are released by the explosion pressure of the high-performance explosive due to the ignition, and the fine particles form a high-speed jet and strike the object to be cut at a high pressure of about 200,000 atmospheres .

Such a molding explosion is very important in terms of the standoff between the explosive and the object to be cut to produce a high-speed jet. If the stand-off is short, the metal particles (slag) can not form a high-speed jet and the steel can not be cut. Conversely, if the stand-off is long, the power for cutting the high- can not do it.

As shown in FIG. 1A, the above-mentioned molding explosive is stand-off because it is at atmospheric pressure state as shown in FIG. 1A, but the stand-off can not be maintained by water pressure as shown in FIG. 1B. 12 is a molding explosive, and 20 is a steel material.

In addition, the above-mentioned molding explosive keeps a state of air between the molding explosive and the object to be cut on the land, but the force between the molding explosive and the object to be cut is in a liquid state in the water, There is a problem that the efficiency is low.

Also, unlike in the land, there is a problem that it is difficult to attach molding explosives depending on the specificity of the working environment such as limited diving time and flow rate of underwater workers in the water.

In other words, due to such a problem, it has not been possible to cut a steel material using a molding explosive in water despite the advantages of molding explosives.

Patent Document 1 merely uses the concept of cutting a ship by installing explosives on the ship, and the above-mentioned problems can not be solved and it is not realistic.

Open Utility Model No. 20-2011-0002298

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to maintain a stand-off between a molding explosive and a cutting object while maintaining watertightness in water, Which is capable of cutting underwater steel material by means of molding explosives, and a method of cutting an underwater steel material using the same.

 Another object of the present invention is to reduce the working time for underwater work and to improve cutting efficiency.

A molding explosive charge container for underwater steel material cutting according to the present invention comprises: a charge container main body having a space for opening at least one side thereof; A molding explosive installed in a space inside the charge container main body and including a transverse rail for blasting or a non-electric primer; And a cap which is coupled to an opening of the charge container main body and receives the transverse rail or the non-electrical primer tube while sealing the charge container main body and maintaining the closed state, wherein the charge container main body is a main body of the charging object, And a distance between the molding explosive and the object to be cut is maintained without being deformed by the water pressure due to adhesion to the steel material as the object to be cut.

Wherein the magnetic attraction means comprises at least one built-in magnet fixedly installed on one or more of the inside and the outside of the charging container main body and magnetically attracted to the steel material, two or more external magnets sucked and fixed to the steel material around the charging container main body, An external magnetic force attraction means connected to two or more magnets and constituted by a container tight band for closely contacting and fixing the charging container main body to the steel material while traversing the periphery of the charging container main body is applied.

The underwater steel material cutting method using a molding explosive charge container for underwater steel material cutting according to the present invention is characterized in that the molding explosive charge container according to claim 1 is attached in water through a magnetic attraction means along a line to be cut for cutting steel of an underwater structure A first step; Connecting a trunk line for water exploitation to a transverse rail or non-electrical primer of the molded explosive charge container attached through the first step and connecting a sleeping ignition line to the underwater explosive trunk line to form the molding explosive charge container And a second step of cutting the steel material in water by exploding the explosive.

According to the present invention, the explosive charge container for underwater explosive charge for cutting underwater steel and the underwater steel material cutting method using the same are used for repairing reinforcement of an underwater structure or for cutting steel for rescue and relief of ships sunk underwater by disaster or disaster , The molding explosive charge container is brought into close contact with the steel material to be cut to maintain the stand-off between the molding explosive and the steel material to be cut, and the space between the molding explosive and the object to be cut is kept in the standby state, It is possible to increase the cutting efficiency in water along the line scheduled to be cut without affecting the water pressure and consequently to set the explosive charge container precisely according to the line to be blasted The reliability and efficiency of blasting are improved.

In addition, since the molding explosive loading vessel can be installed simply and quickly in line with the line to be blasted without unnecessary work for deforming or cutting the steel material to be cut, the work is completed and the working time in the water is significantly shortened, It is possible to reduce the damage of the person such as the diving sickness of the worker due to the work and cut the work even in the section where the flow velocity is high, so that various underwater disasters can be coped more quickly.

1A is a view showing a stand-off state of a molding explosive under atmospheric pressure.
FIG. 1B is a view showing a stand-off state of a molding explosion by water pressure in water. FIG.
2 is an external perspective view of a molding explosive charge container for underwater steel material cutting according to the present invention.
3 is a front view of a molding explosive charge container for underwater steel material cutting according to the present invention.
FIG. 4A is a side view of a explosive charge container for explosive fire for cutting underwater steel according to the present invention. FIG.
FIG. 4B is a side view showing the combination of the explosive charge container and the non-electric primer for cutting the underwater steel material according to the present invention. FIG.
5 and 6 are front and side views, respectively, of an explosive charge container for underwater steel cutting according to the present invention.
FIG. 7 is a schematic view of an explosion system according to an underwater steel material cutting method using a explosive charge container for underwater steel cutting according to the present invention. FIG.
FIG. 8 is another example of a magnetic attraction means applied to a molding explosive charge container for underwater steel material cutting according to the present invention. FIG.

As shown in FIG. 2 to FIG. 4B, a molding explosive charge container (for use in cutting a steel material for the purpose of rescue and relief of a ship which has been submerged in water by a repair or reinforcement of an underwater structure according to the present invention, 10 includes a chargeable medicine container main body 11 attached to a steel material 20 to be cut, a molding explosive 12 provided inside the chargeable medicine container main body 11, a stopper 13).

The charge container main body 11 is a hollow prismatic or cylindrical structure having a space in which the molding explosive 12 can be installed therein. The charging container main body 11 is provided on one or both sides in the longitudinal direction An opening portion is formed in the opening portion, and a cap 13 is coupled to the opening portion.

The charging container main body 11 is made of aluminum or iron rectangular case or cylindrical case. The explosive charge container 10 used for cutting steel materials in water is provided with a molding explosive 12 in the charging container main body 11 so that the charging container main body 11 can be made of a material And the thickness may also be adjusted according to the cutting performance of the water pressure and molding explosives. In the case of using the chargeable substance container body made of soft material, the chargeable container body can not be kept watertight due to the water pressure, so that the molding explosive substance in the chargeable substance container body is pressed by the water pressure, It is difficult to maintain the atmospheric state between the molding explosive and the object to be cut. As a result, the steel can not be cut, and warpage or warpage occurs only.

On the outer surface of the charge container main body 11, a leader line for aligning the center of the molding explosive 12 with the line to be cut may be displayed.

In the charging container main body 11, reinforcing ribs (straight, criss-cross, lattice-like) which support both ends of the charging container main body 11 in the longitudinal direction are connected to the inner peripheral surface of the charging container main body 11, Etc.) may be configured.

The stopper 13 is coupled to the opening of the charge container main body 11 to maintain the watertight state by sealing the inside of the chargeable drug container main body 11 and is provided with an insertion hole for connecting the detoxifying wire 12a or non- (13a) is open at both sides or one side.

The stopper 13 is preferably made of hard material such as PVC to maintain watertightness by water pressure.

The cap 13 serves to maintain the watertight state of the charge container main body 11, and the waterproof treatment method of the molding explosive charge container 10 for this purpose is as follows.

After the molding explosive 12 is installed in the charging container main body 11, one or more built-in magnets (in the present invention, the built-in magnet is fixed to the inside or outside of the charging container main body 11) And is adsorbed to the steel material 20 by a magnetic force. [The neodymium magnet 14 is preferably a strong magnetic force. Hereinafter, the built-in magnet will be described using a neodymium magnet 14 as an example) The space inside the container body 11 is filled with silicon 15 as a waterproofing agent. Then, the opening of the charge container main body 11 and the periphery of the stopper 13 connected to the opening portion are adhered (for example, by articulating), and taping is further performed using an insulating tape or a waterproof tape.

The neodymium magnet 14 is for adsorbing and fixing the charge container main body 11 to the steel material 20 and the charge charge container main body 11 is made of iron through which magnetic force is transmitted, 11) is adsorbed and fixed on the steel material (20). For this purpose, it is preferable that two or more neodymium magnets 14 are applied, and both sides of the molding charge 12 (both sides to which the plugs 13 are engaged) 11, which does not interfere with the explosion pressure of the molding explosive 12, and is a position corresponding to the waterproof layer by the silicon 15.

The neodymium magnet 14 is preferably inserted into the charge container main body 11 and is fixed so as not to be detached from the charge container main body 11 and is charged under the premise of securing watertightness of the charge container main body 11 But it may be provided on the outer surface of the container body 11 or other methods are possible.

The silicone 15 collectively refers to a waterproofing agent for waterproofing a portion to which the charge container main body 11 and the stopper 13 are coupled and is formed on both sides of the molding charge 12 to have a predetermined thickness, To form a waterproof layer.

In the waterproofing method of the insertion port 13a into which the explosion wire or the non-electrical primer tube is inserted, the periphery of the plug and the insertion port is adhered with waterproof epoxy to be waterproofed.

An o-ring or a water-proof sealing process can be performed for water-proofing between the charge container main body 11 and the stopper 13.

The molding explosive 12 is widely used in the field of blasting, and the charge amount, molding explosive length, and the like depend on the thickness and cutting length of the steel material to be cut.

Since the molding explosive charge container 10 is installed through the magnetic attraction of the Neodymium magnet 14 and the holes are not drilled or welded in the water, the working time in the water is greatly shortened and the work can be speedily performed.

The Neodymium magnet 14 has been described as being installed inside the charging container main body 11 but it is also possible to use a separate magnetic attraction plate without applying the neodymium magnet 14 inside the charging container main body 11 It is possible. The thickness of the magnetic attracting plate is adjustable according to the cutting performance of the molding explosive 12.

8, the magnetic attracting plate 50 is provided with a magnet 51 attracted to the steel material 20 of the molding explosive 12, and the charging container main body 11 is fixed. The magnetic attracting plate 50 can be fixed through the charge container main body 11 and the magnet 52. [

As a modification using the magnetic attracting plate 50, a magnet may be provided inside or outside the charging container main body 11 by using a magnetic force attraction plate 50 made of iron.

The underwater steel material cutting method using the explosive charge container for underwater steel material cutting according to the present invention is as follows.

1. Attachment of molding explosive containers.

The attachment of the molding explosive charge container 10 is made by a combination of primary attachment and secondary attachment.

5 to 6 show an example of attaching the molding explosive charge container 10. First, the molding explosive charge container 10 is aligned in line with the line to be cut 100. At this time, the molding explosive charge container 10 is primarily attached to the steel material 20 by the magnetic force of the neodymium magnet 14 in the explosive charge container 10.

The present invention can firmly mount the molding explosive charge container 10 on the steel material 20 by the magnetic attraction of the neodymium magnet 14 but can be installed in the molding explosive charge container 10 A separate external magnetic attraction means may be additionally applied. In the present invention, the external magnetic force attraction means is not limited to being applied together with the neodymium magnet 14 but may be used alone without using the neodymium magnet 14.

The external magnetic force absorbing means is connected to two or more external magnets 30 and external magnets 30 which are arranged on both sides of the charge container main body 11 and adsorbed and fixed to the steel material 20, And a container adhering band 31 for adhering and fixing the molding explosive charge container 10 to the steel material 20 so that the external magnets 30 are fixed to the steel material 20 at the periphery of the molding explosive charge container 10 And the container-closing band 31 is fixed to the periphery of the molding explosive charge container 10 to attach the molding explosive charge container 10 in a second order.

The external magnet 30 is preferably a Neodymium magnet that generates a strong magnetic force, and the number of the external magnet 30 varies depending on the length of the explosive charge container 10, so that the number is not limited and can be variously changed depending on the influence of algae .

The external magnet (30) can be constituted by a ring for connection of the container tightening band (31).

The container tightening band 31 may be connected to an external magnet 30 in water or may be connected to an external magnet 30 in water, As shown in FIG.

The container tightening band 31 may be of various types such as a rubber band having elasticity, a rope having no elasticity, a chain, or the like.

The external magnetic force attraction means is constituted by a set in which two external magnets 30 are connected to one container close band 31 so that one or more sets can be used and two sets are shown as an example .

An additional pedestal 32 may be provided on the molding explosive charge container 10 in order to strengthen the binding of the container tightening band 31 for secondary attachment.

The pedestal 32 is coupled to the opposite side of the steel material 20 of the explosive charge container 10 so that the container tightening band 31 is wound around the periphery thereof and a groove or hole for receiving the container tightening band 31 is formed And filling the empty space between the molding explosive charge container 10 and the container tightening band 31 also leads to an effect of firmly attaching the molding explosive charge container 10.

The pedestal 32 may be a box (which may be changed depending on the shape of the explosive charge container 10, such as a prismatic shape), and may be formed in the molding explosive charge container 10 And a protruding holder or the like for covering the molding explosive charge container 10 on both sides in the width direction so as not to be detached.

The container tightening band 31 may be fixed to the pedestal 32 or the charge container main body 11 in advance.

That is, the primary attachment is by neodymium magnet 14 built in the explosive charge container 10, and the secondary attachment is by the magnet attracted to the steel material 20 while holding the molding explosive charge container 10 will be.

2. Blasting.

The molding explosive 12 in the molding explosive charge container 10 is supplied through the explosion line 12a or the non-electric primer 12b after the molding explosive charge container 10 is attached to the line to be cut 100 through the previous process, .

7 is a schematic view of an explosion system according to the underwater steel material cutting method using the explosive charge container and its attaching method. First, a molding explosive charge container 10 is attached to a steel material 20 to be cut in water and then connected to a water trunk line 40 for underwater explosion. At this time, the trunk line 40 for water exploitation uses a trunk tube for detonation or non-electrical connection. In addition, the trunk line 40 for underwater exploitation is bound together with a rope or a container tight band so as to withstand the currents, and should be installed with a margin of 30% of the depth of the water to be cut 20.

The underwater explosion trunk line 40 is connected to the sleeping explosion line 41 provided on the waterproof vinyl sheet 43 or the like and connected to the detonating primer 42.

The exploding explosive 12 in the explosive charge container 10 is blown through the sleeping ignition line 41 and the underwater explosive trunk line 40 to blow the high explosive jet 12 together with the explosion, And is cut along the line 100 to be cut of the steel material 20 to be cut.

10: molding explosive charge container, 11: charge container main body
12: molding explosive, 12a: explosion line,
12b: non-electrical primer,
13: plug, 13a: insertion hole
14: neodymium magnet, 15: silicon
20: Steel,
30: external magnet, 31: container tight band
32: Stand,
40: Trunk line for underwater explosion, 41: Sleeping fire line
42: Explosive primer, 43: Waterproof vinyl sheet
100: Line to be cut,

Claims (9)

delete delete A chargeable medicament container body (11) having a space for opening at least one side thereof;
A molding explosive 12 installed in a space inside the charge container main body and including a detonation line for blasting or a non-electric primer;
A cap 13 coupled to an opening of the charge container main body to seal the charge container main body and to hold the detonating wire or the non-electrical primer while keeping the sealed state;
A waterproof layer formed by filling a waterproofing agent inside the charging container main body and water-tightly forming inside the charging container main body;
And a magnetic force attracting means for attaching the charge container main body along a line along which a steel piece to be cut is to be cut, and is attached to a steel material to be cut and is not deformed by water pressure, Maintaining a stand-off,
Wherein the magnetic attraction means comprises two or more external magnets (30) arranged on both sides of the charge container main body and adsorbed and fixed to the steel material, respectively, the peripheral magnets being connected to the two or more magnets, And a container tightening band (31) for tightly adhering the charging container main body to the steel material while crossing the charging container main body,
Wherein the waterproof layer is formed by filling a waterproofing agent inside the charge container main body to which the plug (13) is coupled to form watertightness inside the charge container main body. A chargeable medicament container body (11) having a space for opening at least one side thereof;
A molding explosive 12 installed in a space inside the charge container main body and including a detonation line for blasting or a non-electric primer;
A cap 13 coupled to an opening of the charge container main body to seal the charge container main body and to hold the detonating wire or the non-electrical primer while keeping the sealed state;
A waterproof layer formed by filling a waterproofing agent inside the charging container main body and water-tightly forming inside the charging container main body;
And a magnetic force attracting means for attaching the charge container main body along a line along which a steel piece to be cut is to be cut, and is attached to a steel material to be cut and is not deformed by water pressure, Maintaining a stand-off,
Wherein the magnetic attraction means includes at least one built-in magnet fixedly installed on one or more of the inside and the outside of the charging container main body and magnetically attracted to the steel material, An external magnetic force attraction unit comprising two or more external magnets to be adsorbed and fixed, and a container tightening band which is connected to the two or more external magnets on both sides and which closely contacts the charging substance main body with the steel material while crossing the periphery of the charging container main body, Means,
Wherein the waterproof layer is formed by filling a waterproofing agent inside the charge container main body to which the plug (13) is coupled to form watertightness inside the charge container main body. The explosive charge container for underwater steel cutting according to claim 3 or 4, further comprising a pedestal interposed between the charge container main body and the container tight band to support the container tight band. A chargeable medicament container body (11) having a space for opening at least one side thereof;
A molding explosive 12 installed in a space inside the charge container main body and including a detonation line for blasting or a non-electric primer;
A cap 13 coupled to an opening of the charge container main body to seal the charge container main body and to hold the detonating wire or the non-electrical primer while keeping the sealed state;
A waterproof layer formed by filling a waterproofing agent inside the charging container main body and water-tightly forming inside the charging container main body;
And a magnetic force attracting means for attaching the charge container main body along a line along which a steel piece to be cut is to be cut, and is attached to a steel material to be cut and is not deformed by water pressure, Maintaining a stand-off,
Wherein the magnetic force absorbing means is a magnetic force attraction plate including a plate and a magnet (51) adsorbed and fixed to the steel material,
Wherein the waterproof layer is formed by filling a waterproofing agent inside the charge container main body to which the plug (13) is coupled to form watertightness inside the charge container main body. delete A first step of adhering a molding explosive charge container for underwater steel cutting according to claim 3, claim 4 or 6 along a line to be cut for cutting steel of an underwater structure through a magnetic attraction means in water;
And a second step of cutting off the steel material in water by using the trunk line for underwater explosion and the ignition line for water surface to fire the shaped explosive charge container attached through the first step,
Wherein the first step includes the step of connecting the molding explosive charge container with the external magnetic force absorbing means comprising two or more external magnets attached to the steel material and a container tightening band connecting the external magnets and bringing the molding explosive charge container into close contact with the steel material Wherein the method comprises attaching the molded explosive charge container by a method of attaching the built-in magnet and the external magnetic attraction means together or by attaching the built-in magnet to the external magnetic attraction means together.
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