KR101979251B1 - Rock Blasting Filler and Mixed Detonation-based Rock Blasting Method using thereof - Google Patents

Abstract

The present invention relates to a rock blasting filler which efficiently uses gas pressure energy to uniformly break upper and lower sides of a blasting hole and facilitates charging of crushed stone increasing the volume of a cartridge chamber, and a mixed detonation type rock blasting method using the same. To achieve this, according to the present invention, the mixed detonation type rock blasting method using a rock blasting filler comprises: a blasting hole boring step; an indirect priming detonative explosive filling step of filling multiple first blasting holes with indirect priming detonator explosive having a first metal liner installed at a bottom; a non-detonative explosive filling step of filling the first blasting holes with first non-detonative explosive and filling multiple second blasting holes with second non-detonative explosive having a second metal liner installed at a bottom; a direct priming detonative explosive filling step of filling the second blasting holes with direct priming detonative explosive; a filler insertion step of inserting first to third mesh bodies filled with crushed stones with a predetermined length and a different size into the first and second blasting holes; a tamping material filling step of filling tamping material up to top ends of the first and second blasting holes; and a detonation step of sequentially or simultaneously detonating the indirect and direct priming detonative explosive to break bedrock.

Description

BACKGROUND OF THE INVENTION Field of the Invention [0001] The present invention relates to a rock blasting method and a rock blasting method using the same,

The present invention relates to a filling material for rock blasting and a mixed blasting method for rock blasting. More particularly, the present invention relates to a method for blasting rock blasting material for rock blasting, The present invention relates to a rocking blasting filling material and a mixing blasting rocking blasting method using the same.

Generally, when destroying (crushing) rock masses, a method is used in which a plurality of blasters are pierced to a predetermined depth at a predetermined interval in the rock bed, and then explosives and green bodies are filled in the inside of the blasters, When the explosion occurs, the shock wave caused by explosive detonation and the gas pressure due to combustion of the explosive are generated. The contribution of the rock destruction due to the shock wave is about 15%, and the contribution of the rock destruction due to the explosive gas pressure is 85 %. Therefore, it can be understood that the destruction of the rock due to the explosion of the explosive is mainly due to the action of the gas pressure.

 However, since some of the gas pressure energy that is not sufficiently utilized for the destruction of the rock is transferred to the energy causing the noise, vibration and scattering, the rock is blasted to a size not compatible with the established blasting plan, There is a problem that the rock mass can not be uniformly broken down along the longitudinal direction.

 Therefore, it is possible to improve the blasting efficiency of rock mass by improving the utilization efficiency of gas pressure energy. In recent years, various methods have been developed to increase the blasting efficiency of the rock by preventing loss of gas pressure energy and inducing the direction of the gas pressure energy .

A conventional blasting method and blasting method using a difference in position of a primer explosive in Patent Publication No. 1696409 (hereinafter referred to as Patent Document 1) are disclosed in the prior art.

The rock blasting method disclosed in Patent Document 1 is composed of a plurality of blasting holes which are drilled to a certain depth in a rock bed, a primer explosive and a non-primer explosive are charged in the inside, and the entrance side of the blasting hole is filled with a coloring material, The first blaster is composed of a first blasting hole and a second blasting hole which are alternately repeatedly arranged in the longitudinal direction and the transverse direction. The first blasting hole extends from the joint hole of the charge ball to the ball entrance, Wherein the second blasting hole is charged in the order of a non-primer explosive, a primer explosive, and a full-color material in the order from the co-worker of the charge ball to the ball entrance, and the primer explosive of the second blender is charged in the order of primer The explosive is charged in the same line as the ball inlet end of the non-primer explosive of the first blast hole at a depth different from that of the explosive, It is made to be filled with the same line with each other.

However, in the rock blasting method of Patent Document 1, the depth of a primer explosive with a primer and a non-primer explosive without a primer are charged differently for each blast hole, and a full color is filled thereon, The direction of the flow is alternately directed to the bottom and the top of the blast hole so that the rock can be uniformly destroyed. However, when the primer explosive is charged so as to be positioned above the non-primer explosive, the gas pressure due to the explosion explosion is directed toward the upper part of the blast hole There is a problem in that a sufficient color space is required to be secured so as not to be discharged.

Therefore, in the rock blasting method of Patent Document 1, the priming explosion and the non-primed explosive section can be uniformly destroyed as a whole, while the destruction efficiency is lowered due to the relatively long full-color section.

Another prior art discloses a rock blasting method (hereinafter referred to as Patent Document 2) using an air layer of a high-speed rock-filling type as disclosed in Japanese Patent No. 1042719.

The rock blasting method disclosed in Patent Document 2 includes the steps of charging a piece of rock into a cylindrical body made of a net or a film material; Drilling a plurality of blasters into the rock; Charging explosives and primers to said blasters; Forming at least one air layer in the blast hole after charging; Introducing a net or a cylindrical body filled with a piece of rock into the air layer; Filling the opening portion of the blast hole with a coloring material; And detonating the explosive within the blast hole by a primer.

However, in the rock blasting method disclosed in Patent Document 2, the crushed stone of a predetermined length is filled in the blast hole to increase the chamber volume, thereby reducing the loss of the gas pressure energy, thereby improving the blasting efficiency of the rock, Noise and the like are reduced. However, there is a problem that it is difficult to fill the crushed stone in the blast hole because the shape is not maintained or the net is damaged in the course of carrying the crushed stone in the mesh.

Further, since the crushed stone of a predetermined size is uniformly charged within a predetermined section, it is difficult to control the function of reducing the loss of the gas pressure energy and the degree of preventing the gas pressure from being discharged (opened) to the upper side of the blasting hole. The effect of increasing the volume of the chamber is lowered. On the other hand, filling the crushed stone of the larger particles easily releases the gas pressure toward the upper part of the blast hole, thereby increasing the possibility of the ventilation.

Therefore, it is possible to efficiently utilize the gas pressure energy so that the bottom (coplanar) and the upper side of the blast hole can be uniformly broken when the rock blasting is performed, and the filling material for rock blasting that can easily fill the crushed stone, Of the rock blasting method.

KR 10-1696409 B1 (2017. 01. 09.) KR 10-1042719 B1 (June 13, 2011) KR 10-1612434 B1 (04.06.2010) KR 10-2004-0075612 A (Aug. 30, 2004) KR 20-0315516 Y1 (2003. 05. 23.)

The present invention has been made to solve the problems of the conventional rock blasting method as described above, and it is an object of the present invention to provide a method and apparatus for efficiently and efficiently reducing the gas pressure energy so that the lower portion and the upper portion of the blast hole can be uniformly broken Which is easy to fill in crushed stone which can increase the volume of the chamber, and a mixed explosion-type rock breaking method using the same.

According to an aspect of the present invention, there is provided a burntock for rock blasting, comprising: a cylindrical first net having a length up and down and filled with a first crushed stone; A cylindrical second netted body positioned above the first netted body and filled with a second crushed stone; And a cylindrical third net that is located on the upper side of the second net and filled with a third crush stone, wherein the first crush is relatively large in particle size as compared with the second and third crushed stone, The crushed stone is characterized by a relatively small particle size as compared with the second crushed stone.

In the present invention, the first crushed stone is composed of a crushed stone having a size of 20 to 25 mm, the second crushed stone is a crushed stone having a size of 15 to 20 mm, and the third crushed stone is a crushed stone having a size of 10 to 15 mm And the first, second, and third strands are formed to have the same length.

Further, the present invention is characterized in that a metallic plate-shaped beam having a predetermined width and length is inserted into the first, second, and third nets.

Meanwhile, the rock blasting method using mixed explosion-proof packing material of the present invention comprises a blasting hole piercing a plurality of first blasting holes and a second blasting hole at predetermined intervals on a rock bed; A charging device for charging the first blasting hole with a backflow-rate primer explosive loaded with a liner made of a metal material at a lower end thereof; A non-primer explosive charge step of charging a first non-primer explosive to the plurality of first blasters, and a second non-primer explosive charged to a lower end of a liner made of a metal material to the plurality of second blasters; A regular-width primer explosive charge step of charging the plurality of second blasters with a regular-width primer explosive; A filling material inserting step of inserting first, second, and third strands having predetermined lengths in the plurality of first and second blast holes and having crushed stones of different sizes therein; A green color filling step of filling green color until the top of the plurality of first and second blasting holes; And an evacuation step of destroying the rock mass by sequentially igniting or simultaneously expelling the atmospheric explosive explosive and the atmospheric explosive explosive.

In addition, in the present invention, the first netting is filled with the first crushed stone having a size of 20 to 25 mm, the second crushed stone is filled with the second crushed stone having the size of 15 to 20 mm, The first, second and third strands are filled with a third crushed stone of 10 to 15 mm. The first, second and third strands are inserted into a metal plate-shaped beam having a predetermined length and a predetermined length, do.

According to the present invention, since the countercurrent explosive primer explosion and the regular width primer explosive charge are alternately charged to the blasting hole, the direction of the gas pressure energy is induced alternately upward and downward, and the influence of the gas pressure is uniformly transmitted over the upper and lower portions of the blast hole The rock mass can be uniformly destroyed.

In addition, since the filler filled with crushed stone of a small size as it goes up to the top of the net is filled in the blast hole, the loss of the gas pressure is reduced, and the gas pressure is reduced. Further, the gas pressure is discharged to the upper portion of the blast hole, Can be prevented.

Since the crushed stones are classified into sizes, they are not structurally mixed with each other in the transporting process, and the shape of the filling material is not easily disturbed by inserting the stiffening body into the inside of the netting.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a flowchart showing an example of a rock blasting method using mixed ignition method using a rocking blasting filler according to the present invention; FIG.
2 is a view showing an example of a blasting hole drilling step according to the present invention.
3 is a view showing an example of a charging step of a backwashing primer explosive according to the present invention.
FIG. 4 illustrates an example of a non-primer explosive charge step according to the present invention. FIG.
5 (a) and (b) are views showing an example of a liner according to the present invention.
FIG. 6 is a view illustrating an example in which a liner is installed in a backwashing primer explosive and a non-primer explosive according to the present invention;
7 and 8 are views showing an example of a liner installation structure for forming a standoff space according to the present invention;
9 is a view showing an example of a regular-width primer explosive charge step according to the present invention.
10 is a view showing an example of a filling material inserting step according to the present invention.
11 is a view showing an example of a filling material according to the present invention.
12 shows another example of the packing according to the present invention.
13 is a cross-sectional view showing an example in which a filler according to the present invention is provided with a filler.
FIG. 14 is a perspective view showing an example of a complementary body according to the present invention. FIG.
15 (a) and 15 (b) are views showing another embodiment of the present invention.
16 is a side view showing an example in which a filler according to the present invention is installed with a filler.
17 is a view showing an example of a step of filling a coloring material according to the present invention.

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

The present invention can effectively utilize the gas pressure energy so that the lower portion and the upper portion of the blast hole can be uniformly broken when the rock is blasted, and the filling material for rock blasting that can easily fill the crushed stone to increase the volume of the chamber, 1, the present invention provides a method for blasting rock blasting, comprising: blasting a blast hole (S10), charging a backwashing explosive charge (S20), charging a non-priming explosive charge (S30) A filling step S40, a filler inserting step S50, a filling step S60, and an atomizing step S70.

(1) Perforation step (S10)

This step involves establishing a blasting plan and then puncturing a plurality of blasters at predetermined intervals in the rock bed in accordance with the established plan.

At this time, the blasting plan is established according to the known blasting method such as type of explosion, diameter of blasting hole, interval between blasting holes, number of blasting holes, and depth of penetration according to objects such as type and size of rock.

The blast holes (or charge holes) are generally drilled at the same depth and spaced at the same intervals as shown in FIG. 2, but they can be drilled alternately or at predetermined intervals with different depths and intervals, The first blasting hole H1 and the second blasting hole H2 are separately managed so that the counterweight width and the regular width explosive detonator (IDP, DP) can be alternately charged (charged).

The first and second blasting holes H1 and H2 may be perforated in one direction perpendicular or horizontally to the rock as required, but may be perforated so that blasting holes are mixed in vertical and horizontal directions, if necessary. Alternatively, The blast hole may be perforated so as to be inclined at a predetermined angle.

(2) Rechargeable Weft Width Primer Explosion Charging Step (S20)

In this step, after the plurality of first and second blasting holes H1 and H2 are punctured in the blasting hole drilling step S10, the plurality of first blasting holes H1 are filled with the counterflow-width priming explosive.

At this time, the IDPs charged in the plurality of first blasting holes (H1) are charged first with the primer (hole bottom) as shown in FIG. 3 by the detonating explosive with the primer inserted therein, The indirect priming method by IDP is advantageous in that the explosive power of the explosive greatly acts inside the blast hole and the destruction rate of the rock is high because the ignition point is located in the cooperative space.

Also, in the case of counter-flow, the gas pressure energy is shifted toward the first non-primed explosive (T1), which will be described later.

Meanwhile, a cone-shaped liner 50 made of a metal material is installed at the lower end of the IDP to face the co-worker, which collapses the metal liner together with the metal fine particles toward the target (Or Munro effect), which is known to cause a jet (jet) to collide with a target by a metal jet, thereby instantaneously forming a deep hole in the target.

As a result, when the inverse-width explosive detonator (IDP) is detonated, the liner 50 is collapsed, and the metal jet collides with the coprocess to form a deep hole. As a result, the breaking performance of the rock is further improved.

(3) Non-primer explosive charge step (S30)

In this step, after a plurality of first blasting holes H1 are charged with counter-flow width priming explosives (IDP) in the inverse-waveness primer explosive charge step S20, a first blender H1 filled with an IDP- And a second non-primer explosive (T2) having a liner (50) made of a metal material installed at the lower end thereof is filled with a plurality of second blasting holes (H2).

At this time, the liner 50 installed at the lower end of the second non-primer explosive (T2) has the same structure as that of the liner (50) provided at the lower end of the reverse priming explosive device (IDP).

5 (a) and 5 (b), the liner 50 is formed into a conical shape having a predetermined angle A in the range of 40 to 60 degrees, Aluminum, iron, or the like, whereby metal particles (hereinafter referred to as "metal jets") of the liner 50 collapsed in the jet flow generated upon explosion are discharged toward the target.

The liner 50 is inserted into the cylindrical body 51 having a predetermined diameter as shown in FIG. 6 so as to be easily installed at the lower end of the IDP and the second non-primer explosive, (IDP) and the lower end of the second non-primer explosive are inserted into the cylindrical body 51 while the liner 50 is inserted into the inner wall of the cylindrical body 51, ) And the second non-primer explosive.

On the other hand, according to the Noiman effect, the standoff space SO between the liner 50 and the target (co-worker) can be sufficiently accelerated so that the penetration efficiency of the target can be further improved The liner 50 is installed by using the cylindrical body 51 at the lower end of the IDP and the second non-primer explosive and then charged into the first and second blasting holes H1 and H2. An extension member 52 having a predetermined length can be fitted and assembled to the lower end of the cylindrical body 51 as shown in FIG. 7 so that the standoff space SO is formed at a predetermined interval naturally.

Here, the spacing of the standoff space SO needs to be changed depending on the material of the liner 50, the angle A of the liner 50, and the type of explosives. This is because if the spacing of the standoff space SO is narrow, The sufficient acceleration of the jet can not be achieved. On the contrary, if the jet is excessively wide, the penetration force is lowered due to the loss of the metal jet energy.

Accordingly, a plurality of the extension members 52 are manufactured with different lengths, and the extension members 52 having an appropriate length are selectively assembled according to the established blasting plan.

8, a threaded engaging portion 51A is formed along the lower inner surface of the cylindrical body 51, and a threaded engaging portion 50A having a predetermined width is formed at the lower end portion of the liner 50 So that the depth of insertion of the liner 50 into the cylindrical body 51 is adjusted by mutual screwing so that the spacing of the standoff space SO can be appropriately adjusted.

(4) Regular Width Primer Explosion Charging Step (S40)

In this step, after filling the first and second blasting holes H1 and H2 with the first and second non-primer explosives T1 and T2 in the non-primer explosive charge step S30, (DP) as shown in Fig. 9.

(DP) is an explosive explosive with a primer, such as an IDP, which is located at the upper part of the blast hole relative to the width of the counterweight, As the gas pressure energy moves toward the second non-primer explosive (T2), the rock is destroyed.

Therefore, if simultaneous or sequential aeration of the IDP and the regular explosive priming explosion (DP) occurs, the gas pressure energy is transferred alternately from the upper side and the upper side to the lower side of the furnace, So that the rock mass is uniformly destroyed.

(5) Inserting the filling material (S50)

In this step, as shown in FIG. 10, when the regular blotter explosive (DT) is filled in the second blast hole (H2) in the regular-width primer explosive charge step (S40) (10, 20, 30) having predetermined lengths and filled with crushed stones of different sizes therein.

11, the packing 1 includes a cylindrical first net 10 having a length up and down and filled with a first crushed stone 11 therein, A cylindrical second netting 20 in which a second crushed stone 21 is filled and a second crushed stone 21 placed in an upper side of the second netted body 20 and filled with a third crushed stone 31, 3 network.

The first crushed stones 11 are relatively larger in particle size than the second and third crushed stone 21 and 31 and the third crushed stone 31 is smaller in size than the second crushed stone 21, The smaller the size of the crushed stones is filled up in the nettles.

In this case, when the first, second, and third nets 10, 20, and 30 are formed of one net, a bundle B is formed between the first, second, and third webs 10, 20, The portion (B) prevents the crushed stone of different sizes from mixing with each other.

In addition, the first, second, and third nets 10, 20, and 30 may be formed as independent nets as shown in FIG. 12, The first, second, and third webs 10, 20, and 30 may have the same length as each other.

The first crushing stone 11 of the first netting 10 is made of crushed stone having a size of 20 to 25 mm and the second crushing stone 21 of the second netting 20 is crushed stone having a size of 15 to 20 mm. And the third crushing stone (31) of the third netting is preferably made of crushed stone of 10 to 15 mm, which can be easily purchased from crushed stone of various sizes generally sold, It is to secure the appropriate volume to expect the effect.

In addition, as shown in FIG. 13, inside the first, second, and third webs 10, 20, and 30, a bobbin 40 having a metal plate 41 having a predetermined cross- The shape of the first, second and third blades 10, 20 and 30 is prevented from being disturbed in the process of conveying the first, second and third webs 10, 20 and 30 by the bezel 40 so as to be easily inserted into the first and second blasting holes H1 and H2 .

14, a plurality of holes are formed in the metal plate 41 so that the resistance of the gas pressure energy is prevented from rising by the bezel 40. As shown in FIG.

15A and 15B, three or six metal plates 41 may be arranged radially and equally spaced from each other, and such a beam-like body 40 may be formed by arranging three or six metal plates 41, As shown in FIG. 16, it is formed relatively smaller than the internal spaces of the first, second and third webs 10, 20 and 30 so that they are inserted into one inside of the net, A plurality of the complementary beads 40 can be inserted.

(6) Charging step (S60)

This step is to charge the whole color until the entrance of the first and second blasting holes H1 and H2 as shown in FIG. 17 when the filling material 1 is filled in the filling material inserting step (S50) Sand, clay or a mixture of sand and clay is used.

(7) Aeration step (S70)

In this step, after filling the remaining balls of the first and second blast holes (H1, H2) in the green color filling step (S60), the detonating wing-type primer explosive (IDP) The explosive is to explode according to the blasting plan.

At this time, the detonation method causes explosion of the inverse-width explosive detonator (IDP) and regular-width detonator explosive (DP) at the same time or in order to effectively destroy the rock.

As described above, according to the rocking blasting filler of the present invention and the rock blasting method using the mixed rocking method, alternating-width explosive primer and regular-width priming explosive are charged alternately to the blasting hole, In addition, the effect of the gas pressure is uniformly transmitted to the upper and lower parts of the blast hole, and the rock mass is uniformly broken, and the filling material comprising the crushed stone of the small size is filled in the upper part. .

In addition, crushed stones are classified into sizes and packed in the nettings, so that crushed stone particles of different sizes are not mixed with each other during transportation, and furthermore, the shape of the filling material is prevented from being inserted by inserting the hollow body into the inside of the nettings.

Although the preferred embodiments of the present invention have been disclosed for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims. It is to be understood that the scope of the present invention should not be construed as being limited only by the appended claims and should not be construed as limiting the scope of the present invention to those of ordinary skill in the art. It will be very self-evident.

1: Filler 2: Whole color water
10: first net 11: first crushed stone
20: second net 21: second crushed stone
30: Third netting 31: Third crushed stone
40, 40A, 40B: Boom body 41:
41A: hole 50: liner
50A: Screw connection part 51: Cylindrical body
51A: screw coupling portion 52: extension member
A: Liner angle B:
DP: Regular width primer explosion H1: 1st blasting hole
H2: Second Blaster IDP: Weapon Width Primer Explosion
SO: Standoff space T1: First non-primer explosive
T2: Second non-primer explosive

Claims (5)

1. A packing (1) filled between a explosive filled in a perforated blast hole for destruction of a rock and a green color so as to increase a chamber volume,
The packing (1)
A first cylindrical net 10 having a length up and down and filled with a first crushed stone 11 therein;
A cylindrical second netting 20 positioned above the first netting 10 and filled with a second crushed stone 21 therein; And
A third cylindrical netting 30 located on the upper side of the second netting 20 and filled with a third crushed stone 31 therein;
Lt; / RTI >
The first crushed stone 11 has a relatively larger particle size than the second and third crushed stone 21 and 31 and the third crushed stone 31 has a smaller particle size than the second crushed stone 21 ,
The first crushed stone (11)
It is composed of crushed stone of 20 ~ 25mm size,
The second crushed stone (21)
It consists of crushed stone of 15 ~ 20mm size,
The third crushed stone (31)
10 to 15 mm of crushed stone,
The first, second, and third nets (10, 20, 30)
Wherein the plurality of grooves are formed to have the same length.
delete The method according to claim 1,
In the first, second, and third nets (10, 20, 30)
Wherein a metal plate-like body (40) having a predetermined width and length is inserted and installed.
In a rock blasting method of mixed ignition type,
(S10) of puncturing a plurality of first blasting holes (H1) and second blasting holes (H2) at predetermined intervals on the rock mass;
A step S20 of charging an explosive tip explosive (IDP) with a liner (50) made of a metal material at the lower end of the plurality of first blasters (H1);
The first blast hole H1 is filled with a first non-primer explosive T1 and the second blast hole H2 is filled with a liner 50 made of a metal material. T2) in a non-primer tube explosion charging step (S30);
A regular-width primer explosive charge step (S40) for charging the plurality of second blast holes (H2) with a regular width primer explosive (DP);
A filling material inserting step of inserting the first, second and third nettings 10, 20 and 30 having predetermined lengths in the plurality of first and second blasting holes H1 and H2 and filled with crushed stone of different sizes therein S50);
A green color filling step (S60) of filling the whole color material (2) to the upper ends of the first and second blasting holes (H1, H2); And
A detonating step (S70) of destroying the rock mass by sequentially exposing or simultaneously exposing the above-mentioned IDP and said regular width detonator explosive (DP);
The method comprising the steps of: (a) disposing a burr for rock blasting;
The method of claim 4,
In the filling material inserting step (S50)
The first crushing stone 11 having a size of 20 to 25 mm is filled in the first netting 10 and the second crushing stone 21 having a size of 15 to 20 mm is filled in the second netting 20, The third netting 30 is filled with a third crushed stone 31 of 10 to 15 mm,
The first, second, and third nets (10, 20, 30)
Wherein a metal plate-like shaped body (40) having a predetermined length and a predetermined length is inserted and installed in the same length as each other.

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