KR101822595B1 - Blasting method and blasting unit using the same - Google Patents

Abstract

The present invention relates to a blasting body unit and a blasting method using the same and, more specifically, to a blasting body unit and a blasting method using the same which control an intensity and a direction of an explosive force during a blast using a blasting body unit wherein a stopper and a precision explosive are coupled by a connector, and reduce problems of noise, vibration, and scattering accompanied when blasting. The blasting body unit comprises: a stopper (10) having a cylindrical connection pipe unit (11) and a funnel-shaped holder unit (12) on an upper end of the connection pipe unit (11); a precision explosive (20) whose upper end is inserted into the connection pipe unit (11) on a lower portion of the stopper (10); a cylindrical connector (30) having a cylindrical coupling groove (31) on a center of an upper portion of thereof to couple a lower end of the precision explosive (20) to the upper portion of thereof, wherein a lower portion thereof is opened to couple an upper end of an explosive (40) to the lower portion thereof to have an insertion part (32) on an outer side of the coupling groove (31); and the explosive (40) coupled to the insertion part (32) of the connector (30). A plurality of through holes (310) corresponding to a plurality of protrusions (200) formed on a lower end of the precision explosive (20) are formed on an inner circumference of the coupling groove (31) formed on the connector (30) to sturdily couple the precision explosive (20) to the connector (30). A lower end of an outer circumference of the coupling groove (31) formed on the connector (30) is formed in a sharp shape to facilitate insertion of the explosive (40).

Description

Blasting method and blasting unit using the same [

The present invention relates to a blasting unit and a blasting method using the blasting unit, and more particularly, to a blasting unit that combines a precision width and an explosive with a stopper and a connector to control intensity and direction of blasting force, Vibration, scattering, and the like, and a blasting method using the blasting unit.

Conventionally, a method widely used as a blasting method for excavating rock masses includes a general blasting method in which blasting is carried out by simply loading and dismounting with explosives and a coloring material in a perforation hole and alternately arranging explosives and coloring materials in a perforation hole And a pre-splitting blasting method, which is a method of arranging a flat surface.

Among them, the general blasting method is a method in which explosives and a primer are loaded in a charge pile to form a staircase in the open pile rocking operation, and the blasting is carried out with a full color, and the explosive loaded in the charge pile is concentrated to the lower side of the charge pile It is also possible to generate a large rock mass because the length of the green color is relatively longer than that of the perforation depth and the explosive force is not applied to the rock around the green color. It is a high blasting method.

The blasting method using the deck charge is also adopted in order to compensate the disadvantages of the general blasting method. However, this blasting method alternately performs the operations of charging explosives and primers into the charge pile and turning the pile into the pile color. This is the method of loading the primer to the layered drug separately as many as the layered drugs, and the explosive is detached and exploded with the parallax in the same perforation hole to blast the rock.

This method is costly because it requires an additional primer as many as the number of layered medicines, and it is also difficult to work alternately loading explosives and green bodies alternately in layers, which is not only inefficient in construction work, The vibration damping effect is not so high because the amount is required to be used.

On the other hand, a pre-splitting blasting method which is blasted by explosive explosion by connecting explosives with a detonation line and alternately forming explosives and spaces in the charge space, and charging the space part alternately in the charge space The method is very difficult to apply in the field of construction, and many explosive amounts are used to cause explosion, resulting in a large noise (noise).

1, the explosive length of the explosive in the charge ball 1 is limited not only by the length of the explosive itself, but also by the length l of the full color 5 The explosive 2 and the primer 3 are biased to the lower side of the charge hole 1 to be deeply loaded from the free surface F so that the ground vibration greatly increases and the explosive explosion (B) at the upper side of the fracture boundary line (L), that is, at the upper part of the fracture boundary line (L) Since the surrounding rocks do not have an explosive force, it is necessary to crush the secondary rocks again in order to deal with the rocks which are in the form of a large rock mass after blasting, and the blasting cost is additionally required.

In order to solve such a problem, in the past, as disclosed in Korean Patent Laid-Open No. 10-0316161 (Nov. 17, 2001), entitled "Rock Blasting Method Using Air Tube", as shown in FIG. 2, There is known a technique of installing at least one sealed air tube made of a synthetic resin such as propylene.

When such an air tube is used, an air layer having an artificial free surface is formed in the charge hole to increase the specific surface area at the time of explosion so that the explosive force is uniformly dispersed in the surrounding rock bed in the charge space to attenuate the blasting vibration and bouncing, In explosion, the projected area is enlarged on the rock surface of free side to increase the voltage to reduce the generation of all seasons by breaking the rock, and it can reduce the amount of explosives to be used for rock blasting.

However, since the air tube is cut out at a predetermined value (diameter and length) beforehand, it is necessary to use the supplied product. Therefore, it is necessary to use the supplied air tube in the surrounding environment such as the type, size, There is a problem that it is difficult to cope with the case where the tube length or diameter can be freely changed and installed.

In addition, in order to manufacture an air tube, air is injected into the tube by a separate machine, and it is necessary to seal the tube with a sheet. Therefore, there are many cases where the air tube is damaged during insertion in the charging hole, Respectively.

The present invention is characterized in that a new free surface is formed in a ball by inserting a single unit chain blasting unit into which the precision explosive and the explosive are easily and firmly coupled by the stopper and the connector and the impact pressure generated upon explosion moves to the free surface, And it is possible to control the explosion force and to increase the projected area of the chamber, so that the impact pressure can be efficiently transmitted to the rock bed even with a small amount of gun powder, And a blasting method using the blasting unit.

The blasting unit of the present invention comprises: a stopper (10) having a cylindrical connecting pipe portion (11) and a funnel-shaped holder portion (12) at the upper end of the connecting pipe portion (11);
A precision explosive 20 in which an upper end of the stopper 10 is inserted into the connection tube portion 11;
The lower end of the explosive 40 is opened so that the lower end of the explosive device 20 is coupled to the upper end of the coupling groove 31 and the lower end of the explosive device 40 is coupled to the outer side of the insertion groove 31, (30) having a cylindrical connector (32);
And an explosive (40) whose upper end is coupled to the insertion port (32) of the connector (30)
A plurality of through holes 310 corresponding to the plurality of protrusions 200 formed at the lower end of the precision explosive 20 are formed on the inner circumference of the coupling groove 31 formed in the connector 30, Can be firmly coupled to the connector 30,
The coupling groove 31 formed in the connector 30 is formed to have a sharp outer peripheral lower end so that the insertion of the explosive 40 is facilitated.

1. Reduction of noise, vibration, scattering due to decrease of hallway charge

2. Due to the increase in the projected area of the chamber, the explosive force generated in the ball is uniformly distributed in the target rock,

3. A new free surface area is formed in the ball to control the explosion direction and the explosive force is increased by the working pressure, so the tensile failure is increased around the minimum resistance line near the free surface.

4. Pore effect can be generated by forming new free surface in the air, so precise destruction is possible to control explosive force

5. Precision explosives are located in the center of the ball, so that pore effects occur and improve the net width of explosives and precision explosives.

6. It is easy to control the explosive amount of explosives and precision explosives, so it is possible to adjust the intensity of the explosive force according to the characteristics of the target rock and control blasting according to the characteristics of the rock.

7. The direction of the explosive force is adjusted according to the insertion direction of the blast unit, and the explosive force can be transmitted to the upper, lower, and central portions of the target rock to improve the degree of fracture required

1 is a view for explaining a blasting concept in a charge vessel according to a conventional blasting method;
2 is a view for explaining a rock blasting method using a conventional air tube
Fig. 3 is an exploded perspective view of a blast damper unit according to the present invention.
FIG. 4 is a perspective view showing a combined perspective view of a blast damper unit according to the present invention.
5 is a view for explaining the action and effect of the blast damper unit according to the present invention;
6 is a view for explaining the principle of transmitting the explosive force of the explosive body unit according to the present invention
7 to 9 are views for explaining the installation state of the blast cleaning unit according to the present invention
10 is a view for comparing the blasting method using the blast damper unit and the conventional standard blasting method according to the present invention

The present invention provides a blasting unit comprising: a stopper (10) having a cylindrical connecting pipe portion (11) and a funnel-shaped holder portion (12) at an upper end of the connecting pipe portion (11); A precision explosive 20 in which an upper end of the stopper 10 is inserted into the connection tube portion 11; The lower end of the explosive 40 is opened so that the lower end of the explosive device 20 is coupled to the upper end of the coupling groove 31 and the lower end of the explosive device 40 is coupled to the outer side of the insertion groove 31, (30) having a cylindrical connector (32); And an explosive (40) whose upper end is coupled to the insertion port (32) of the connector (30).

A plurality of through holes 310 corresponding to the plurality of protrusions 200 formed at the lower end of the precision explosive 20 are formed on the inner circumference of the coupling groove 31 formed in the connector 30, 20) can be firmly coupled to the connector (30).

In addition, the coupling groove 31 formed in the connector 30 is formed such that the outer lower end thereof is pointed to facilitate insertion of the explosive 40.

According to another aspect of the present invention, there is provided a blasting method using a blasting unit, comprising: a stopper having a funnel-shaped holder portion at an upper end of a connecting tube portion; and a cylindrical coupling groove formed at a lower portion of the stopper, Preparing a blasting body unit having a connector to which a lower end of a precision explosive is coupled and an explosive to which an upper end is coupled with an insertion hole formed in a lower portion of the connector;

Drilling holes in the rock plate to a predetermined depth and predetermined arrangement to form charge holes;

Inserting a detonator into the charge hole after inserting a detonator into the explosive;

Filling the entrance of the charge ball with a full color material;

And blasting the primer with a blender.

In the step of inserting the blast damper unit, the insertion direction of the blast damper unit is selected so that the stopper or the explosive is directed toward the entrance of the charge ball.

Further, a plurality of the blast unit units are inserted into the charge hole so as to form a plurality of layers.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

2 is a view for explaining a method of rock blasting using a conventional air tube, and Fig. 3 is a view for explaining a method of separating a blast furnace unit according to the present invention FIG. 5 is a view for explaining the action and effect of the blast damper unit according to the present invention, and FIG. 6 is a view for explaining the explosive force transmission of the blast damper unit according to the present invention. FIGS. 7 to 9 are views for explaining the installation state of the blasting arm unit according to the present invention, and FIG. 10 is a view for explaining the blasting method using the blasting arm unit according to the present invention and the conventional standard blasting method FIG.

3 and 4, the blasting unit according to the present invention includes a stopper 10, a precision explosive 20, and an explosive body 20 in order to increase a projected area of a chamber and to form a new free surface in the buried hole to control the explosive force. The connector 30, and the explosive 40 are combined.

The stopper 10 is composed of a hollow cylindrical tubular connecting tube portion 11 and a holder portion 12 formed at the upper end of the connecting tube portion 11 and formed in a funnel shape with a lower light- So that the precision explosive 20 can be positioned at the center of the charge ball 20 while the precision explosive 20 is firmly coupled to the inside of the explosive body 20, So that it can be prevented from flowing into the unit.

Since the upper end of the precision explosive 20 is coupled to the connection tube 11 of the stopper 10 and the lower end thereof is coupled to the connector 30, .

As shown in FIGS. 5 and 6, the precision explosive 20 positioned at the center in the charge space has a gap formed between the precision explosive and the charge space to form a new free surface in the charge space, The impact force (explosive force) generated is transmitted to the new free surface, so that the impact force (explosive force) propagates to increase the tensile failure around the minimum resistance line near the free surface.

Also, by the free surface formed around the precision explosive 20, the explosive can be controlled and blasted without directly affecting the air wall, so that the effect of substantially increasing the decoupling index can be obtained.

The connector 30 is formed in a cylindrical shape and has an engagement groove 31 formed at an upper center thereof so as to connect the precision explosive 20 to the upper part and the explosive 40 to the lower part, (32).

A plurality of through holes 310 are formed in the inner circumferential lower side of the coupling groove 31 and a plurality of projections are formed downward So that the precision explosive 20 can be firmly engaged with the engaging groove 31 by fitting the precision explosive 20 manufactured correspondingly into the through hole 310 corresponding to the protrusion.

The insertion port 32 is formed with a hollow portion outside the coupling groove 31 when the lower portion of the connector 30 is opened. When the upper end of the explosive 40 is inserted into the insertion port 32, 40 are formed to protrude from the outer circumferential edge of the coupling groove 31 so as to be easily inserted.

The explosive 40 can be used for all the explosives used in general blasting operations and the primer to be inserted into the explosive can use both electric and non-electric and electronic primers. So that it can be easily installed in the charge space.

The precision explosive 20 and the explosive 40 combined by the stopper 10 and the connector 30 can control the explosive strength and the explosion direction by adjusting the amount of the explosive and the direction of the installation easily, Thereby enabling controlled blasting.

As shown in FIGS. 5, 6, and 10, the blasting unit including the stopper 10, the precision explosive 20, the connector 30, and the explosive 40 is a single unit, And the precision explosive 20 and the explosive 40 are firmly coupled to the stopper 10 and the connector 30 while being guided by the stopper and the connector when inserting the explosive 40 into the charge hole In addition to being installed stably in the central part of the bulb in a stable manner, it also reduces the amount of the hallway charge compared to the conventional standard blasting, effectively reducing the noise, vibration and rock scattering during the explosion and increasing the projected area of the chamber, The explosive force generated in the ball is uniformly distributed in the rock mass of the blasting object, which makes it possible to increase the even fracture of the rock mass.

On the other hand, when the blasting unit is installed on the outer crown of the tunnel, the explosive force is uniformly distributed by the new free surface, so that the rock can be shattered in accordance with the line to be blasted while preventing over- Do it.

Hereinafter, a blasting method using the blasting unit according to the present invention will be described.

1) Blasting unit preparation step (S10)

A stopper 10 having a funnel-shaped holder 12 at the upper end of the connecting tube 11, a precision explosive 20 to which the upper end of the stopper is coupled by the connecting tube 11, A connector 30 to which a lower end of the precision explosive is coupled to a cylindrical coupling groove 31 formed at the center and an explosive 40 to which an upper end is coupled by an insertion port 32 formed at a lower portion of the connector 30 The assembled brush breaker unit is prepared by firmly coupling the stoppers 10, the precision explosives 20, the connectors 30, and the explosives 40 in this order.

At this time, the amount of gunpowder of the precision explosive (20) and explosive (40) is appropriately prepared so as to control the intensity of the explosive force according to the blasting condition and characteristics of the rock.

2) Charging ball forming step (S20)

A plurality of charge holes 60 are formed by drilling holes of predetermined depth and predetermined arrangement in the rock bed to be blasted. In this case, the drilling direction may be parallel or varied according to the site conditions and conditions, Between the holes 60, an armed drug hole can be drilled with a diameter equal to or greater than the diameter of the charge hole.

3) Bladder unit insertion step (S30)

The explosive 40 is inserted into the charge hole 60 by inserting a blasting unit assembled with the stopper 10, the precision explosive 20, the connector 30 and the explosive 40, And the primer wire connected to the primer is exposed to the outside of the charge hole 60 to insert the blasting unit into the charge hole so that the blasting can be smoothly performed.

At this time, depending on the rock condition conditions and characteristics of the blasting object, the blasting unit may be inserted into a single layer in the charge hole 60 or a plurality of blades may be inserted so as to form a plurality of layers to adjust the blasting force.

7, the stopper 10 is inserted toward the entrance of the charge hole 60 so as to be located at the uppermost position, or when the bladder unit is inserted into the charge hole 60 as shown in FIG. 8 Likewise, it is possible to insert the explosive 40 having the opposite direction at the uppermost position. When a plurality of blasting units are inserted, the plurality of blasting bodies are inserted in one direction and the opposite direction as shown in FIG. 9 And the explosion force is controlled to the upper, lower and central portions of the rock when the direction of the explosive force is adjusted according to the inserting direction of the blast unit, .

4) Full color step (S40)

When the insertion of the blast unit is completed in the charge hole 60, the blast furnace unit is completely filled with the full color material 70, which is a non-combustible material such as sand or clay, , Prevents noise and scattering, prevents leakage of gas after explosion, and enables explosive energy to be fully exercised.

5) Blasting step (S50)

When the fill color of the charge hole 60 is completed, the explosive 40 is blasted at a remote location by a primer wire connected to the primer, and each primer is sequentially excited with a time lag so that strong vibration or pressure is not generated at once .

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is evident that many obvious changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The scope of the invention should therefore be construed in light of the claims set forth to cover many of such variations.

10-Stopper
11-
12-
20-precision explosives
30-connector
31-coupling groove
32-
40-Explosives
60-charge ball
70-whole water

Claims (6)

A stopper 10 having a cylindrical connecting pipe portion 11 and a funnel-shaped holder portion 12 at the upper end of the connecting pipe portion 11;
A precision explosive 20 in which an upper end of the stopper 10 is inserted into the connection tube portion 11;
The lower end of the explosive 40 is opened so that the lower end of the explosive device 20 is coupled to the upper end of the coupling groove 31 and the lower end of the explosive device 40 is coupled to the outer side of the insertion groove 31, (30) having a cylindrical connector (32);
And an explosive (40) whose upper end is coupled to the insertion port (32) of the connector (30)
A plurality of through holes 310 corresponding to the plurality of protrusions 200 formed at the lower end of the precision explosive 20 are formed on the inner circumference of the coupling groove 31 formed in the connector 30, Can be firmly coupled to the connector 30,
Wherein the coupling groove (31) formed in the connector (30) is formed with a sharp-bottomed outer peripheral edge to facilitate insertion of the explosive (40). delete delete In the blasting method using the blast damper unit of claim 1,
A connector having a stopper having a funnel-shaped holder portion at an upper end of the connecting tube portion, a connector having a bottom end of the stopper and a lower end of the precision explosive, (S10) of preparing a blast unit unit comprising an explosive to which an upper end is coupled with an insertion hole formed at a lower portion of the blast unit unit;
(S20) of forming a charge hole by perforating a hole with a predetermined depth and predetermined arrangement on a rock surface;
The insertion direction is selected so that the stopper or the explosive is directed to the entrance of the charge ball, and a plurality of the blasting unit is inserted into the charge ball so as to form a plurality of layers in the charge ball Step S30;
(S40) of coloring the entrance of the charge ball with a full color material;
And blasting the primer with a blender (S50).
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