Blasting method and gas pressure amplification tube using air deck and gas pressure amplification

Abstract

The present invention relates to a blasting method using an air deck and gas pressure amplification, and an air deck-type gas pressure amplification tube. It achieves an air deck effect by increasing the chamber volume (gas pressure action space) through a filling material, and induces destruction by directing gas pressure energy in a straight direction without passing through the voids of the filling material. The blasting method using an air deck and gas pressure amplification according to the present invention comprises: a first step of drilling a blast hole (1); a second step of loading an explosive (2) into the blast hole; a third step of installing an air deck-type gas pressure amplification tube (10) on the outside of the explosive; a fourth step of sealing the outside of the air deck-type gas pressure amplification tube; and a fifth step of detonating the explosive to blast, wherein the air deck-type gas pressure amplification tube comprises a tube body (20) having a gas ejection channel penetrating along the longitudinal direction inside; The tube body comprises a particulate filler (30) filled inside, wherein the tube body comprises an inner tube (22) without holes to form a gas ejection channel (21) that ejects gas pressure in a straight line, an outer tube (23) formed with a larger diameter than the inner tube to allow the filler to be filled, a porous lower cap (24) coupled to one side of the inner tube and the outer tube in the longitudinal direction, and an upper cap (25) coupled to the other side of the inner tube and the outer tube in the longitudinal direction. Additionally, a liner for concentrating explosive energy and an alignment part for alignment may be further included. As another example, the air deck type gas pressure amplification tube (40) comprises a tube body (41) having a gas ejection channel penetrating along the longitudinal direction inside; a liner (43) formed with an inclined cross-section that widens outward from the inner center toward the circumference, coupled to one or more sides of the tube body in the longitudinal direction, and concentrating explosive energy into the gas ejection channel; It includes an alignment part (45) whose edge is supported on the inner surface of the blast hole to align the tube body to the center of the blast hole; and an upper plug (44) coupled to the upper part of the tube body to block the gas ejection path, wherein the outer diameter of the tube body is formed to be smaller than the inner diameter of the blast hole to form an air layer between it and the blast hole.

Description

Technology Field

[0001] The present invention relates to a blasting method using an air deck and gas pressure amplification and a gas pressure amplification tube, and more specifically, to a blasting method using an air deck and gas pressure amplification and an air deck-type gas pressure amplification tube that blasts by utilizing an organic combination relationship between the formation of an air deck using the filling of a filler material and the induction of straight-line gas pressure. Background Technology

[0002] Generally, blasting technology is used to destroy (crush) rock mass (open pits, tunnels, etc.), structures, buildings, etc., by drilling multiple blast holes at predetermined intervals to a predetermined depth in the rock mass, and then filling the inside of the blast holes with explosives and stemming agents to detonate them.

[0003] When explosives loaded in a blast hole explode during blasting, they generate shock waves due to the detonation of the explosives and gas pressure due to the combustion of the explosives. It is known that the contribution of the shock waves to rock destruction is about 15%, and the contribution of the gas pressure of the explosives to rock destruction is 85%. Therefore, it can be seen that the destruction of rocks caused by the explosion of explosives is mainly due to the action of gas pressure.

[0004] However, some of the gas pressure energy is not fully utilized for rock destruction and is instead converted into energy that causes noise, vibration, and flying debris. Consequently, the rock mass is blasted to a size that does not conform to the design blasting plan, and there is a problem in that the rock mass is not destroyed uniformly along the entire length of the blast hole.

[0005] To address this phenomenon, there is a method of excessively increasing the amount of explosives and the number of blast holes; however, this method creates another problem by raising construction costs. Therefore, various technologies are being proposed to improve blasting efficiency by enhancing the utilization efficiency of gas pressure energy without increasing the amount of explosives.

[0006] For example, recently, various methods have been developed to increase the blasting efficiency of rock masses by preventing the loss of gas pressure energy and guiding its direction of travel, and one such method is air deck technology that controls the action of gas pressure.

[0007] Registered Patent No. 10-0316161 involves installing an air tube inside a blast hole, but since changes in gas pressure occur due to the increase in chamber volume, it requires a longer effective length compared to general methods. Consequently, it causes a pressure reduction, making it difficult to expect an air deck effect. Regarding patent documents to solve this, Registered Patent No. 10-0882851, Registered Patent No. 10-1042719, and Registered Patent No. 10-1979251 form an air deck by filling the blast hole with rock fragments. By increasing the chamber volume without increasing the effective length, the explosive gas pressure is induced to act effectively in the space of the air deck section, thereby increasing the area of ​​application of the explosive gas pressure within the entire blast hole. While it is claimed that this increases the blasting effect by effectively utilizing the explosive energy of the explosive for rock destruction while minimizing the conversion of vibration, noise, and flying energy, it has the disadvantage of weakening the gas pressure. Prior art literature

[0008] Registered Patent No. 10-0882851 Registered Patent No. 10-1042719 Registered Patent No. 10-1979251 The problem to be solved

[0009] The present invention aims to solve the aforementioned problems by providing an air deck that promotes an air deck effect by increasing the chamber volume (space for gas pressure action) through a filler material, and a blasting method utilizing gas pressure amplification and an air deck-type gas pressure amplification tube that induces destruction by large gas pressure energy by guiding gas pressure energy in a straight direction without resistance. means of solving the problem

[0010] The blasting method using an air deck and gas pressure amplification according to the present invention is characterized by drilling a blast hole, installing and sealing an explosive inside the blast hole, and installing an air deck-type gas pressure amplification tube between the explosive and the seal to detonate the explosive, wherein the air deck-type gas pressure amplification tube comprises: a tube body having a gas ejection path penetrating along the longitudinal direction inside; and a particulate filler material filled inside the tube body; wherein the tube body comprises an inner tube without holes to form a gas ejection path that ejects gas pressure in a straight line, an outer tube formed with a diameter larger than that of the inner tube and guiding the gas pressure passing between the filler materials to the blast hole, a porous lower cap coupled to one side of the longitudinal direction of the inner tube and the outer tube, and an upper cap coupled to the other side of the longitudinal direction of the inner tube and the outer tube.

[0011] Preferably, the air deck type gas pressure amplification tube includes a liner coupled to the inner tube to concentrate explosive energy.

[0012] Preferably, an alignment section is included to align the outer tube inside the blast hole.

[0013] The air deck type gas pressure amplification tube according to the present invention comprises: a tube body having a gas ejection channel penetrating along the longitudinal direction inside; a liner formed with an inclined cross-section that widens outward from the inner center toward the circumference and coupled to one or more of the longitudinal sides of the tube body to concentrate explosive energy into the gas ejection channel; an alignment part whose edge is supported on the inner circumference of the blast hole to align the tube body with the center of the blast hole; and an upper plug coupled to the upper part of the tube body to block the gas ejection channel, wherein the tube body is formed such that its outer diameter is smaller than the inner diameter of the blast hole to form an air layer between it and the blast hole. Effects of the invention

[0014] According to the blasting method using an air deck and gas pressure amplification and the air deck-type gas pressure amplification tube of the present invention, the gas pressure can be increased by increasing the chamber volume (gas pressure action space) without increasing the effective length compared to conventional methods through the filling of a filler material. In addition, gas pressure energy is induced through a straight gas ejection path without a filler material, and destruction is achieved using large gas pressure energy without pressure reduction, thereby increasing blasting efficiency. That is, a greater blasting effect can be expected with the same amount of explosives and the specifications of the blast hole, or in other words, the same blasting effect can be expected with a smaller amount of explosives. Consequently, it is an eco-friendly blasting technology that has excellent constructability by eliminating the need for secondary blasting or other operations such as crushing large rocks, and can also reduce environmental pollution such as vibration, noise, and flying debris.

[0015] In other words, through the organic combination of the filling material and the gas ejection path, it is possible to maximize blasting efficiency by generating high gas pressure while resolving the decrease in gas pressure caused by the increase in chamber volume.

[0016] In addition, by concentrating gas pressure through the liner in the gas ejection path, it reduces gas pressure loss caused by the filling of filler material and consequently improves blasting efficiency.

[0017] In addition, in the case of Example 1, the filler material is filled in advance, and the air deck type gas pressure amplification tube can be installed by inserting it into the blast hole at the blasting site, so the constructability is excellent.

[0018] In addition, in the case of Example 2, one can choose to use an air layer or to use both an air layer and a filler material together, that is, since blasting construction customized for the construction site is possible, blasting efficiency can be maximized. Brief explanation of the drawing

[0019] FIG. 1 is a diagram showing the charge state of a blasting method using an air deck and gas pressure amplification according to Embodiment 1 of the present invention. FIG. 2 is an external perspective view of an air deck-type gas pressure amplification tube according to Embodiment 1 of the present invention. FIG. 3 is a half-sectional perspective view of an air deck-type gas pressure amplification tube according to Embodiment 1 of the present invention. FIG. 4 is a cross-sectional view of an air deck-type gas pressure amplification tube according to Embodiment 1 of the present invention. FIG. 5 is a cross-sectional view showing an example in which two liners are applied to an air deck-type gas pressure amplification tube according to Embodiment 1 of the present invention. FIG. 6 is a plan view showing gas guiding ribs applied to an air deck-type gas pressure amplification tube according to Embodiment 1 of the present invention. FIG. 7 is a perspective view of an air deck-type gas pressure amplification tube according to Embodiment 2 of the present invention. FIG. 8 is a cross-sectional view of an air deck-type gas pressure amplification tube according to Embodiment 2 of the present invention. FIG. 9 is an example diagram showing a joint applied to an air deck-type gas pressure amplification tube according to Embodiment 2 of the present invention. 10 is a drawing illustrating a double liner of an air deck type gas pressure amplification tube according to Embodiment 2 of the present invention. FIG. 11 is an example drawing of a blasting design including an air deck type gas pressure amplification tube according to Embodiment 2 of the present invention. Specific details for implementing the invention

[0020] In the following description of the present invention, specific descriptions of related known functions or configurations will be omitted if it is determined that such descriptions would unnecessarily obscure the essence of the invention. Furthermore, the terms described below are defined in consideration of their functions within the present invention, and these definitions may vary depending on the intentions or practices of the user or operator. Therefore, such definitions should be based on the content throughout this specification.

[0021] Example 1 is an example in which an air deck type gas pressure amplification tube is composed of an inner tube and an outer tube and filled with a filler, and Example 2 is an example in which an air deck type gas pressure amplification tube includes a gas ejection channel and the periphery is made into an air layer or filled with a filler.

[0022] <Example 1>

[0023] As shown in FIG. 1, the blasting method using an air deck and gas pressure amplification according to the present embodiment is a blasting state diagram in which a blasting hole (1) is formed inside a rock, an explosive (2) is installed inside the blasting hole (1), an air deck type gas pressure amplification tube (hereinafter abbreviated as 'tube') (10) is installed outside the explosive (2), and a sealant (3) is filled and sealed outside the tube (10).

[0024] The drilling length, drilling diameter, charge length, and sealing length of the blast hole (1) can be varied, so they are not limited to numerical values.

[0025] In FIG. 1, (A) is an example where one tube (10) is installed, (B) is an example where two tubes (10) are installed in a stacked (chained) manner, and (C) is an example where three tubes (10) are installed in a stacked manner.

[0026] The explosive (2) is installed inside the blast hole (1) and includes a detonator (2a), with the detonator (2a) positioned on the inside of the blast hole (1), that is, on the side further from the tube (10) in the longitudinal direction.

[0027] The binder (3) can be any material used in the blasting field, such as sand, and is bound using a known method.

[0028] When the explosive (2) and the tube (10) are considered as one set, as shown in FIG. 1, only one set may be installed in one blast hole (1), or two or more sets may be installed.

[0029] As shown in FIGS. 1 to 4, the tube (10) includes a tube body (20) and a filler (30).

[0030] The tube body (20) has a gas ejection channel (21) formed inside, and is formed in a long cylindrical shape to enhance the effect of inducing gas pressure by the gas ejection channel (21) and using a filling material (30), and is made of various materials such as plastic.

[0031] The specific configuration of the tube body (20) for such a structure includes an inner tube (22), an outer tube (23), a lower cap (24), and an upper cap (25), and a space is formed inside by these configurations (22, 23, 24, 25) and filled with a filling material (30).

[0032] The inner tube (22) is a part that forms a gas ejection channel (21) and is composed of a straight tube (preferably a circular tube) to guide the gas pressure in a straight line, and has a structure without holes so that the gas pressure does not leak toward the filling material (30) on the periphery.

[0033] The outer tube (23) is formed as a tube (preferably a circular tube) with a larger diameter than the inner tube (22) and provides a space between it and the inner tube (22) in which a filling material (30) is filled.

[0034] The lower cap (24) and the upper cap (25) are connected to each end in the longitudinal direction of the inner tube (22) and the outer tube (23) to form a filling space for the filling material (30) while connecting the inner tube (22) and the outer tube (23). The lower cap (24) is porous so that gas pressure is introduced when it is positioned toward the explosive (2), and the upper cap (25) is positioned away from the explosive (2).

[0035] The upper cap (25) is a structure without holes (porous) or a structure with holes (porous). When only one tube (10) is installed, it is a porous structure. When two or more tubes (10) are stacked (chained), the last upper cap (25) on the side of the filler (3) is a porous structure, and the upper caps (25) inside it are configured as porous structures to guide the gas pressure that has passed through the filler (30) of the preceding tube (10) to the filler (30). The porous structure can be formed by forming the upper cap (25) as a porous plate or by attaching a separate porous plate to the upper cap (25).

[0036] The porous structure of the lower stopper (24) and the upper stopper (25) can be formed in two rows of concentric circles as shown in FIG. 4, and the inner holes can be formed more densely than the outer holes.

[0037] In addition, the tube (10) includes an alignment section (26) so that it is installed in the center of the blast hole (1). The alignment section (26) is formed radially on the outer tube (23) or the upper cap (25) and aligns the tube (10) in the center by supporting its edge against the inner wall of the blast hole (1). Although it is shown in the drawing as being formed only on the upper side, it is not limited thereto and can be formed in two or more places, and it is also possible to form three or more at regular intervals along the circumferential direction.

[0038] The alignment portion (26) is preferably formed to be inclined toward the upper side (outside of the blast hole (1)) with respect to the tube (10), and is formed larger than the diameter of a normal blast hole (1) when no external force is applied, so that when the tube (10) is inserted into the blast hole (1), it gathers to match the diameter of the blast hole (1) and its edge is supported by the inner wall of the blast hole (1) to align the tube (10) to the center.

[0039] The alignment section (26) is useful even when the blast hole (1) is a vertical hole, but it is even more useful in an inclined hole because it prevents the tube (10) from tilting due to gravity and shifting toward the lower part of the blast hole (1).

[0040] The present invention includes a liner (27).

[0041] The liner (27) is shaped like a cone with a tapered cross-section that widens from the bottom to the top (outside of the explosive (2)) according to the drawing, and is configured to have a concave space inside that opens toward the top according to the drawing to concentrate explosive energy into the gas ejection channel (42) (Neumann effect). At this time, it is installed to correspond to the inside of the inner tube (22) so that explosive energy resulting from the explosion of the explosive (1) inside can be concentrated into the gas ejection channel (21).

[0042] The liner (27) includes a conical portion and a cylindrical portion, wherein the conical portion is formed with an inclined cross-section that widens outward from the inner center toward the circumference to concentrate explosive energy inside the gas ejection channel, and the cylindrical portion is a part that is connected to the inner tube (22).

[0043] When two or more tubes (10) are installed, the liner (27) in the outer tube (10) is inserted into the inner tube (22) of the inner tube (10) to interlock the tubes (10) and also functions to concentrate the gas pressure passing through the inner gas discharge channel (21) into the outer gas discharge channel (21).

[0044] A liner (27) installed at the end of the tube (10) has a conical portion protruding outward from the inner tube (22) and is inserted into the explosive (1) upon installation (the explosive (1) is flexible and deformed by the insertion of the liner (27).

[0045] Therefore, it is not limited to installing only one liner (27) at the end of one inner tube (22), and as shown in FIG. 5, it is also possible to install liners (27) at two locations, that is, at the end of the explosive (2) and inside, and ultimately, the gas pressure concentration effect can be increased by concentrating the explosive energy at the end of the explosive (2) and concentrating it again inside and transferring it to the outside.

[0046] As shown in FIG. 6, it may include a gas-guiding rib (28) formed on the inner circumference of the inner tube (22) to guide the flow of gas.

[0047] The gas induction ribs (28) can be of a straight type that guides the gas in a straight line, a vortex type that guides it in a vortex shape, or a cross type. In addition, in the case of the straight type, multiple ribs can be formed at equal intervals along the circumferential direction to guide the flow while uniformly dispersing the gas. In the case of the cross type, it includes the function of the straight type and also has the function of increasing the strength of the inner tube (22) to prevent bending deformation during the manufacturing and installation process of the tube (10).

[0048] The filler material (30) is a particulate aggregate that is filled inside the tube body (20) and forms an air deck through the voids between the aggregates, at which time the void ratio is 0.1 to 0.9. If the void ratio is less than 0.1, the air deck space is close to a sealed state, making it difficult to utilize gas pressure during detonation, and if it is greater than 0.9, a pressure decrease occurs due to an increase in chamber volume, and the effect as an air deck is weak.

[0049] The particle size of the aggregate used as a filler (30) is related to the void ratio. If the particle size is too small, it acts as a sealant, and if it is too large, it is difficult to control the void ratio. Therefore, it is possible to mix aggregates of different particle sizes.

[0050] The blasting method using an air deck and gas pressure amplification according to the present invention is as follows.

[0051] 1. Drilling of blast holes.

[0052] A blast hole (1) is drilled for blasting rock (open ground, tunnel, etc.), structures, buildings, etc., and the blast hole (1) is drilled in various patterns depending on the structure.

[0053] 2. Explosive charge.

[0054] Explosives (2) are loaded into the blast hole (1), and a detonator (2a) is loaded so that it is placed inside (at the bottom of) the blast hole (1).

[0055] 3. Tube installation.

[0056] A tube (10) is installed inside a blast hole (1), and a liner (27) is inserted into the explosive (2). During this process, the tube (10) is aligned to the center of the blast hole (1) while the alignment part (26) is supported by the inner wall of the blast hole (1). That is, the tube (10) is installed with the liner (27) fixed to the explosive (1) from the inside and the alignment part (26) supported by the inner wall of the blast hole (1) from the outside.

[0057] It is also possible to assemble the explosive (2) and tube (10) into an installed state and then install this assembly in the blast hole (1) as a single operation.

[0058] 4. Color.

[0059] The outer hollow of the tube (10) is filled with a sealant (3) to seal it.

[0060] 5. Detonation.

[0061] The detonator (2a) of the explosive (2) is detonated to blast.

[0062] The explosive energy resulting from the explosion of the explosive (2) propagates to the area around the explosive (2) to destroy rock (open-air, tunnel, etc.), structures, buildings, etc. At this time, the gas pressure action space is increased by filling the filler materials, so that the explosive gas pressure acts uniformly toward the perimeter of the blast hole to destroy the rock, and at the same time, some of the gas pressure maintains a straight line along the gas ejection path (21) located in the center and destroys rock (open-air, tunnel, etc.), structures, buildings, etc. together with the gas pressure acting on the filler materials.

[0063] <Example 2>

[0064] As shown in FIGS. 7 and 8, the air deck type gas pressure amplification tube (40) (hereinafter abbreviated as tube) according to the present embodiment includes a tube body (41) that includes a gas ejection channel (42) inside and forms an air layer (air deck) between it and a blast hole, a liner (43) formed in the tube body (41) and concentrates the explosive energy from the explosion of the explosive into the gas ejection channel (42), an upper cap (44) that covers the upper part of the tube body (41), and an alignment part (45) that aligns the tube body (41) to the center of the blast hole.

[0065] The tube body (41) is tubular in shape with both ends in the longitudinal direction open, with a gas ejection channel (42) formed inside, and has an outer diameter smaller than the inner diameter of the blast hole (1), thus forming an air layer between it and the blast hole (1). The air layer can be composed only of air or filled with a filler material (30), and due to the structure of the tube (40), the filler material (30) is filled in a particulate form.

[0066] The tube body (41) can be made of various materials such as paper (paper tube) and can have various shapes such as a circle, and is installed in the center of the blast hole (1) through the alignment part (45).

[0067] The liner (43) may include a conical portion for concentrating gas pressure and a cylindrical portion for coupling with the tube body (41), and the conical portion has an inclined cross-section that flares outward from the inner center toward the circumference, and since it is identical to the liner (27) described in Example 1, a detailed description is omitted.

[0068] The upper cap (44) is preferably a non-porous structure, and when two or more tubes (40) are stacked (chained), the last upper cap on the side of the filler (3) is a non-porous structure, and the upper caps inside it may be configured as porous structures to induce gas pressure that has passed through the filler (30) of the preceding tube (40).

[0069] The alignment section (45) aligns the tube body (41) to the center of the blast hole (1) to form a uniformly sized air layer around the circumference of the tube body (41), and is configured such that a plurality of wings (45-1) of the same structure and size are spaced apart along the circumferential direction. Initially, the wings (45-1) are positioned outside the inner diameter of the blast hole (1), and as they are inserted into the blast hole (1), the wings (45-1) undergo elastic deformation and are supported within the blast hole (1).

[0070] The alignment portion (45) is preferably formed integrally with the liner (43) using the slope of the liner (43), and is a sloped shape that widens as it goes upward from the liner (43). That is, the liner (43) is an alignment portion integrated liner (43).

[0071] The above tube (40) is a basic type.

[0072] Various variations of the present embodiment are described below.

[0073] The tube body (41) is manufactured and used with a certain length, but instead of manufacturing a tube body (41) of a length suitable for the perforation site, two or more tube bodies (41) are connected and used.

[0074] As shown in FIG. 9, a joint (46) connecting the tube bodies (41) is included.

[0075] The joint (46) is tubular in shape with the same shape as the tube body (41), with both ends in the longitudinal direction open, and a portion is inserted into the upper tube body (41-1) according to the drawing (or connected to both the outer surface or the inner surface and the outer surface), and the remaining portion is inserted into the lower tube body (41-2) (or connected to both the outer surface or the inner surface and the outer surface).

[0076] Additionally, the joint (46) includes a liner portion (46-2) to amplify the gas pressure along with the function of connecting the tube bodies (41-1, 41-2). That is, the joint (46) includes a cylindrical portion (46-1) coupled to the tube bodies (41-1, 41-2) and a liner portion (46-2) formed inside the cylindrical portion (46-1). Accordingly, as the gas pressure is amplified by the liner (43) on the explosive (2) side and ejected along the gas ejection path (42), the gas pressure may decrease as the length of the perforation length increases, but the liner portion (46-2) of the joint (46) prevents such a decrease in gas pressure.

[0077] FIG. 10 shows an example that can be used at a site where explosives (2-1, 2-2) are installed on both the inside (bottom side) and the outside (inlet side) of the tube (40). Of the two explosives (2-1, 2-2), a detonator is installed only on the inner explosive (2-1).

[0078] Liners (alignment part integrated liner) (43-1, 43-2) are installed on the inside and outside of the tube body (41), respectively.

[0079] The above tube (40) is a double-liner type.

[0080] In this structure, the circumference of the tube body (41) is formed only of an air layer, because the outer liner (43-2) prevents the filling of the filler material (30).

[0081] The present invention can be designed in various forms, and FIG. 11 illustrates an example thereof.

[0082] (A) is in the order of explosive (2-1) - tube (40) (double liner type) and air layer - explosive (2-2) - tube (40) (basic type) and filler (30) - sealing (3) starting from the inside of the blast hole (1).

[0083] (B) is in the order of explosive (2-1) - tube (40) (liner double type) and air layer - explosive (2-2) - two tubes (40) (joint type) and filler (30) - seal (3).

[0084] (C) illustrates the sequence of explosive (2-1) - tube (40) (liner double type) and air layer - explosive (2-2) - three tubes (40) (joint type) and filler (30) - sealing (3). Explanation of the symbols

[0085] 1: Blasting hole, 2: Explosive, 3: Sealant, 10: Air deck type gas pressure amplification tube, 20: Tube body, 21: Gas ejection path, 22: Inner tube, 23: Outer tube, 24: Lower cap, 25: Upper cap, 26: Alignment section, 27: Liner, 28: Gas guide rib, 30: Filler, 40: Air deck type gas pressure amplification tube, 41: Tube body, 42: Gas ejection path, 43: Liner, 44: Upper cap, 45: Alignment section, 45-1: Wing, 46: Joint,

Claims

Claim 1 The method comprises a first step of drilling a blast hole; a second step of loading explosives into the blast hole and installing an air deck-type gas pressure amplification tube on the outside of the explosives; a third step of sealing the outside of the air deck-type gas pressure amplification tube; and a fourth step of detonating the explosives to blast, wherein the air deck-type gas pressure amplification tube of the second step comprises a tube body having a gas ejection channel penetrating along the longitudinal direction inside; and a particulate filler material filled inside the tube body. A blasting method using an air deck and gas pressure amplification, comprising a tube body and a liner installed therein to concentrate explosive energy into a gas discharge path, wherein the tube body comprises an inner tube without holes to form a gas discharge path that discharges gas pressure in a straight line, an outer tube formed with a larger diameter than the inner tube to allow the filling material to be filled, a porous lower plug coupled to one side of the inner tube and the outer tube in the longitudinal direction, and an upper plug coupled to the other side of the inner tube and the outer tube in the longitudinal direction, wherein the liner comprises a conical portion and a cylindrical portion, wherein the conical portion is formed in a conical shape with an inclined cross-section that widens outward from the inner center toward the circumference, protrudes outward from the end of the inner tube and is inserted into the explosive, thereby concentrating explosive energy into the gas discharge path, and the cylindrical portion is coupled to the inner tube to correspond to the gas discharge path. Claim 2 The method comprises a first step of drilling a blast hole; a second step of loading explosives into the blast hole and installing an air deck type gas pressure amplification tube on the outside of the explosives; a third step of sealing the outside of the air deck type gas pressure amplification tube; and a fourth step of detonating the explosives to blast, wherein the air deck type gas pressure amplification tube of the second step comprises: a tube body having a gas ejection channel penetrating along the longitudinal direction inside; a liner coupled to one or more of the longitudinal sides of the tube body and concentrating explosive energy into the gas ejection channel; and an alignment part whose edge is supported on the inner circumference of the blast hole and aligns the tube body to the center of the blast hole. A blasting method using an air deck and gas pressure amplification, characterized by including an upper plug coupled to the upper part of the tube body to block the gas ejection path, wherein the tube body is formed such that its outer diameter is smaller than the inner diameter of the blast hole to form an air layer between it and the blast hole, and the liner includes a conical portion and a cylindrical portion, wherein the conical portion is formed in a conical shape with an inclined cross-section that widens outward from the inner center toward the circumference and protrudes outward from the end of the tube body and is inserted into the explosive, concentrating explosive energy into the gas ejection path, and the cylindrical portion is coupled to the tube body to correspond to the gas ejection path. Claim 3 A blasting method using an air deck and gas pressure amplification according to claim 2, wherein the second step is characterized by filling the air layer with particulate filler after installing the air deck-type gas pressure amplification tube. Claim 4 A blasting method using an air deck and gas pressure amplification according to claim 3, wherein the second step involves installing an explosive and a first air deck type gas pressure amplification tube and an explosive and a second air deck type gas pressure amplification tube from the inside to the outside of the blast hole, and then filling the air layer with a filler, or installing an explosive and a first air deck type gas pressure amplification tube and an explosive and two or more third air deck type gas pressure amplification tubes from the inside to the outside of the blast hole, and then filling with a filler, wherein the first air deck type gas pressure amplification tube includes a liner on the inside and the outside respectively, the second air deck type gas pressure amplification tube includes a liner only on the inside, and the third air deck type gas pressure amplification tube has a tube body joined through a joint. Claim 5 A tube body having a gas ejection channel penetrating along the longitudinal direction inside; and a particulate filler filled inside the tube body; An air deck type gas pressure amplification tube, comprising one or more liner installed in the tube body to concentrate explosive energy into the gas ejection path, wherein the tube body includes a holeless inner tube to form a gas ejection path that ejects gas pressure in a straight line, an outer tube formed with a larger diameter than the inner tube to allow the filler material to be filled, a porous lower plug coupled to one side of the inner tube and the outer tube in the longitudinal direction, and an upper plug coupled to the other side of the inner tube and the outer tube in the longitudinal direction, wherein the liner includes a conical portion and a cylindrical portion, wherein the conical portion is formed in a conical shape with an inclined cross-section that widens outward from the inner center toward the circumference, protrudes outward from the end of the inner tube and is inserted into the explosive to concentrate explosive energy into the gas ejection path, and the cylindrical portion is coupled to the inner tube to correspond to the gas ejection path. Claim 6 delete Claim 7 An air deck type gas pressure amplification tube according to claim 5, characterized in that the liners are arranged in two or more places along the longitudinal direction of the inner tube and are installed convexly toward the explosive to concentrate and transmit gas pressure along the gas ejection path. Claim 8 An air deck type gas pressure amplification tube according to claim 5 or claim 7, characterized in that it includes an alignment portion formed radially on the circumference of the outer tube, the edge of which is supported by the inner wall of the charge hole to align the tube body with the center of the charge hole. Claim 9 An air deck type gas pressure amplification tube according to claim 5 or claim 7, characterized by including a gas induction rib formed on the inner circumferential surface of the inner tube to induce gas flow. Claim 10 An air deck type gas pressure amplification tube characterized by comprising: a tube body having a gas ejection channel penetrating along the longitudinal direction inside; a liner coupled to one or more of the longitudinal sides of the tube body and concentrating explosive energy into the gas ejection channel; an alignment part whose edge is supported on the inner circumference of the blast hole to align the tube body with the center of the blast hole; and an upper plug coupled to the upper part of the tube body to block the gas ejection channel, wherein the outer diameter of the tube body is formed smaller than the inner diameter of the blast hole to form an air layer between the blast hole and the tube body, and the liner comprises a conical part and a cylindrical part, wherein the conical part is formed in a conical shape with an inclined cross-section that widens outward from the inner center toward the circumference and protrudes outward from the end of the tube body and is inserted into the explosive to concentrate explosive energy into the gas ejection channel, and the cylindrical part is coupled to the tube body to correspond to the gas ejection channel. Claim 11 An air deck type gas pressure amplification tube according to claim 10, characterized by including a filler material filled in the air layer. Claim 12 An air deck type gas pressure amplification tube according to claim 10, characterized by including a joint connecting the tube bodies in a row. Claim 13 An air deck type gas pressure amplification tube according to claim 12, characterized in that the joint includes a liner portion formed with an inclined cross-section that widens from the inner center toward the circumference to amplify gas pressure.

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