CN113340165B - Tunnel blasting structure and blasting method - Google Patents
Tunnel blasting structure and blasting method Download PDFInfo
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- CN113340165B CN113340165B CN202110717607.1A CN202110717607A CN113340165B CN 113340165 B CN113340165 B CN 113340165B CN 202110717607 A CN202110717607 A CN 202110717607A CN 113340165 B CN113340165 B CN 113340165B
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- 238000002955 isolation Methods 0.000 claims description 9
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- 239000011425 bamboo Substances 0.000 description 3
- 238000004898 kneading Methods 0.000 description 3
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- 238000005474 detonation Methods 0.000 description 2
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- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D1/00—Blasting methods or apparatus, e.g. loading or tamping
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/006—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries by making use of blasting methods
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D3/00—Particular applications of blasting techniques
- F42D3/04—Particular applications of blasting techniques for rock blasting
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Abstract
The invention provides a roadway blasting structure and a roadway blasting method, and relates to the technical field of roadway construction. The device comprises a plurality of eye groups, wherein the plurality of eye groups comprise a first eye group formed by a slitting central eye, a second eye group formed by a plurality of slitting eyes, a third eye group formed by a plurality of blasting buffer eyes, a fourth eye group formed by a plurality of auxiliary eyes and a fifth eye group formed by a plurality of peripheral eyes, the first eye group, the second eye group, the third eye group, the fourth eye group and the fifth eye group are sequentially distributed from inside to outside, the distance between every two adjacent eye groups gradually increases from inside to outside, the optimization of the overall eye position distribution of a tunnel section is facilitated, the blasting space is more reasonable, the blasting buffer eyes are arranged between the slitting eyes and the auxiliary eyes, the compensation space of auxiliary eye blasting is increased through the extrusion blasting action of the blasting buffer eyes, so that secondary blasting is generated, the blasting free surface space of a middle area is increased, the occurrence of a refusal explosion is prevented, and the safety is ensured.
Description
Technical Field
The invention relates to the technical field of roadway construction, in particular to a roadway blasting structure and a roadway blasting method.
Background
Metal ores generally refer to mineral products from which metallic elements may be extracted by smelting, such as ferrous metal mineral products: iron, manganese, chromium, vanadium, titanium, etc. are minerals used as raw materials in the iron and steel industry. Nonferrous metal minerals include: copper, tin, zinc, nickel, cobalt, tungsten, molybdenum, mercury, and the like. The noble metals include: platinum, rhodium, gold, silver, and the like. Light metal minerals include: aluminum, magnesium, and the like. Rare metal minerals include: lithium, beryllium, rare earth, and the like. Metal minerals can be classified into 5 kinds according to their material composition, properties and uses: ferrous metal mineral products, nonferrous metal mineral products, noble metal mineral products, mineral products with dispersed elements, semi-metallic mineral products. The scale of mining of metal ores in China is developed suddenly and rapidly, the metal ores in the country above the built county level have more than 900 seats, and the annual yield of the metal ores is increased to about 4 hundred million tons.
The present inventors found that there are at least the following technical problems in the prior art: when the hole positions of the section of the roadway of the existing metal ore are arranged, auxiliary holes are arranged on the periphery of the slitting holes, an intermediate area exists between the slitting holes and the auxiliary holes, the blasting free surface space of the intermediate area is small, the explosion rejection risk is increased, and potential safety hazards are easy to generate.
Disclosure of Invention
The invention aims to provide a tunnel blasting structure and a tunnel blasting method, which are used for solving the technical problem that the explosion rejection risk is increased due to the small free surface space between a slitting eye and an auxiliary eye in the prior art. The preferred technical solutions of the technical solutions provided by the present invention can produce a plurality of technical effects described below.
In order to achieve the above purpose, the present invention provides the following technical solutions:
The utility model provides a tunnel blasting structure, includes a plurality of eye group, a plurality of eye group include by the first eye group that a centre of cut eye was constituteed, by the second eye group that a plurality of cut eye was constituteed, by the third eye group that a plurality of blasting buffer eye was constituteed, by the fourth eye group that a plurality of auxiliary eye was constituteed and by the fifth eye group that a plurality of peripheral eye was constituteed, first eye group, second eye group, third eye group, fourth eye group and fifth eye group arrange in order from inside to outside and every adjacent two interval between the eye group progressively increases from inside to outside, all cut eyes, all the blasting buffer eye, all auxiliary eye and all peripheral eye all are all around respectively the circumference direction of centre of cut eye, every blasting buffer eye, every auxiliary eye and every peripheral eye all are provided with an equipment medicine structure.
Preferably, the charging structure in the cut center hole comprises a plurality of explosive cartridges and detonating tube detonators, the explosive cartridges are sequentially connected, the detonating tube detonators are connected with the explosive cartridges and located on the inner side of the cut center hole, and the outermost side of the cut center hole is plugged by plugs.
Preferably, the charging structure in the explosion buffer eye comprises a plurality of cartridges and connecting pieces, wherein the number of the cartridges is a plurality of cartridges and is set at intervals, every two adjacent cartridges are connected through one connecting piece, and the outermost side of the explosion buffer eye is plugged through a plug.
Preferably, the explosive charging structure in the auxiliary hole comprises explosive cartridges, detonating tube detonators, connecting pieces and detonating cords, wherein the number of the explosive cartridges is a plurality of and the explosive cartridges are arranged at intervals, every two adjacent explosive cartridges are connected through one connecting piece, the detonating cords are sequentially connected with all explosive cartridges, the detonating tube detonators are connected with the explosive cartridges and are located on the inner side of the auxiliary hole, and the outermost side of the auxiliary hole is plugged through plugs.
Preferably, the explosive charging structure in the surrounding hole comprises explosive cartridges, detonating tube detonators, connecting pieces and detonating cords, wherein the number of the explosive cartridges is a plurality of and the explosive cartridges are arranged at intervals, every two adjacent explosive cartridges are connected through one connecting piece, the detonating cords are sequentially connected with all explosive cartridges, the detonating tube detonators are connected with the explosive cartridges and are located on the inner side of the auxiliary hole, and the outermost side of the surrounding hole is plugged through plugs.
Preferably, the undercut eye is a truncated cone and the aperture of the outermost side of the undercut eye is greater than the aperture of the innermost side of the undercut eye.
Preferably, the system further comprises two space compensation eyes, wherein the two space compensation eyes are positioned between the fourth eye group and the fifth eye group and positioned at the top of the roadway section.
Preferably, the machine further comprises two central slitting eyes, wherein the two central slitting eyes are arranged on the periphery of the slitting central eyes.
Preferably, the method further comprises a plurality of isolation eyes, wherein all the isolation eyes are distributed around the circumferential direction of the slitting central eyes and are positioned outside the fifth eye group.
The blasting method based on the tunnel blasting structure comprises the following specific steps:
S1, selecting a section of a blasting roadway;
S2, forming holes on the selected tunnel section, wherein the hole types comprise a central hole, a blasting buffer hole, an auxiliary hole and a peripheral hole, the central hole is formed in the periphery of the central hole, the blasting buffer hole is formed in the periphery of the central hole, the auxiliary hole is formed in the periphery of the blasting buffer hole, and the peripheral hole is formed in the periphery of the auxiliary hole;
S3, placing the charging structures corresponding to the center hole, the blasting buffer hole, the auxiliary hole and the peripheral hole in corresponding holes, and plugging the outermost sides of the holes;
s4, detonating the center hole of the undercut, the blasting buffer hole, the auxiliary hole and the peripheral hole in sequence.
The beneficial effects of the invention are as follows: the first eye group, the second eye group, the third eye group, the fourth eye group and the fifth eye group are sequentially arranged from inside to outside, the interval between every two adjacent eye groups gradually increases from inside to outside, the interval between the eye groups gradually increases is favorable for optimizing the overall eye position arrangement of the tunnel section, and the blasting space between the different eye groups is more reasonable;
Through being provided with the explosion buffer eye between draw slot eye and supplementary eye, the explosion impact of explosion buffer eye is by outside kneading extrusion blasting, produces impact again, and the impact that produces extrudees again the rock mass of blasting around, makes its block degree diminish, produces the space increase, through the extrusion blasting effect of explosion buffer eye, increases the compensation space of supplementary eye blasting to produce the blasting once more after other blasting, increase the blasting free surface space in middle zone, stopped the possibility that the rejection explosion takes place, guaranteed safety.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a sectional structural view of example 1 of the present invention;
FIG. 2 is a sectional structural view of example 2 of the present invention;
FIG. 3 is a block diagram of the charge configuration corresponding to the undercut center hole of the present invention;
FIG. 4 is a block diagram of the charge structure corresponding to the blast cushion eye of the present invention;
FIG. 5 is a block diagram of the charge configuration corresponding to the auxiliary eye of the present invention;
FIG. 6 is a block diagram of a charge configuration corresponding to a peripheral eye in accordance with the present invention;
FIG. 7 is a cross-sectional view of a undercut eye of the present invention;
In the figure 1, a centre eye is cut; 2. cutting an eye; 3. blasting a buffer hole; 4. an auxiliary eye; 5. a peripheral eye; 61. a cartridge; 62. detonating tube detonator; 63. a plug; 64. a connecting piece; 65. detonating cord; 7. spatially compensating the eye; 8. a central undercut eye; 9. isolating the eye.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, based on the examples herein, which are within the scope of the invention as defined by the claims, will be within the scope of the invention as defined by the claims.
In the description of the present invention, it should be understood that the terms "center", "side", "length", "width", "height", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "side", etc. indicate orientations or positional relationships based on the orientation or positional relationships shown in fig. 1 are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In the description of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Example 1
Referring to fig. 1,3 to 7, the present embodiment provides a tunnel blasting structure including a plurality of eye groups including a first eye group composed of a slitting center eye 1, a second eye group composed of a plurality of slitting eyes 2, a third eye group composed of a plurality of blasting buffer eyes 3, a fourth eye group composed of a plurality of auxiliary eyes 4, and a fifth eye group composed of a plurality of peripheral eyes 5, the first eye group, the second eye group, the third eye group, the fourth eye group, and the fifth eye group being sequentially arranged from inside to outside and the spacing between each adjacent two eye groups being gradually increased from inside to outside, the gradually increasing eye group spacing being favorable for optimizing the overall eye position arrangement of the tunnel section, making the size of blasting space between different eye groups more reasonable, all the slitting eyes 2, all the blasting buffer eyes 3, all the auxiliary eyes 4 and all the peripheral eyes 5 are distributed around the circumferential direction of the slitting center eye 1 respectively, a medicine assembling structure is arranged in each slitting center eye 1, each blasting buffer eye 3, each auxiliary eye 4 and each peripheral eye 5, the blasting buffer eyes 3 are arranged between the slitting eyes 2 and the auxiliary eyes 4, the blasting impact of the blasting buffer eyes 3 is extrusion blasting by external kneading, the impact force is generated again, the generated impact force extrudes the surrounding blasted rock mass again, the block size of the surrounding blasted rock mass is reduced, the space is increased, the compensation space of blasting of the auxiliary eyes 4 is increased through the extrusion blasting effect of the blasting buffer eyes 3, the blasting free surface space of the middle area is increased, the possibility of the occurrence of the blasting is avoided, and the safety is ensured.
As an alternative embodiment, the charging structure in the cut central hole 1 comprises a plurality of explosive cartridges 61 and detonating tube detonators 62, the explosive cartridges 61 are sequentially connected, the cut central hole 1 is filled, the detonating tube detonators 62 are connected with the explosive cartridges 61 and are positioned on the inner side of the cut central hole 1, the outermost side of the cut central hole 1 is blocked by a blocking object 63, and the blocking object 63 can be preferably a stemming or other structure;
Filling up the hollow center hole 1 by arranging a plurality of cartridges 61 connected in sequence realizes full hole charging, so that the blasting strength of the charging hole of the hollow center hole 1 is larger to ensure that the hollow center hole 1 can form enough blasting free surface when being used for blasting.
As an alternative embodiment, the undercut eye 2 is in a truncated cone shape, the aperture of the outermost side of the undercut eye 2 is larger than the aperture of the innermost side of the undercut eye 2, the undercut eye 2 is arranged to generate enough compensation space for the auxiliary eye 4 during blasting, so that the auxiliary eye 4 can smoothly finish blasting, no charge is provided in the undercut eye 2, only the compensation space is simply provided, and the truncated cone shape design can enable the compensation space to be kept even in the length direction.
As an alternative embodiment, the charging structure in the explosion buffer hole 3 comprises a plurality of cartridges 61 and connecting pieces 64, the cartridges 61 are arranged at intervals, every two adjacent cartridges 61 are connected through one connecting piece 64, the connecting pieces 64 can be preferably made of bamboo strips and other structures, the outermost side of the explosion buffer hole 3 is plugged by plugs 63, and the plugs 63 can be preferably made of stemming and other structures;
The free surface formed after the hole 2 is blasted forms a blasting space for the auxiliary hole 4, in order to ensure that the blasting effect of the area between the hole 1 and the auxiliary hole 4 presents a multiplication effect, the area can be subjected to secondary blasting and crushing, so that the blasting buffer hole 3 is increased between the hole 1 and the auxiliary hole 4, the explosive structure inside the blasting buffer hole 3 is used for carrying out separated explosive charging through the explosive cartridges 61 arranged at intervals, the detonating tube detonator 62 is not provided, the explosive cartridges 61 are saved in the explosive form of separated explosive charging, the blasting cost is better reduced, meanwhile, better blasting space is provided for the explosive cartridges 61, the blasting efficiency is improved, the blasting buffer hole 3 provides auxiliary effect for the hole 2, the blasting impact of the blasting buffer hole 3 is extrusion blasting by external kneading, the impact force is generated again, the surrounding blasted rock mass is extruded again, the block degree of the blasting buffer hole 3 is reduced, the space is increased, the compensation space of the blasting buffer hole 4 is increased, and the free space of the blasting buffer hole 3 is increased again after the blasting is generated, and the free space of the middle area is increased again.
As an alternative embodiment, the charging structure in the auxiliary hole 4 includes a plurality of explosive cartridges 61, a detonating tube detonator 62, connecting pieces 64 and detonating cords 65, the number of the explosive cartridges 61 is several and arranged at intervals, each two adjacent explosive cartridges 61 are connected through one connecting piece 64, the connecting pieces 64 can preferably use bamboo strips and other structures, the detonating cords 65 are sequentially connected with all the explosive cartridges 61, the detonating tube detonator 62 is connected with the explosive cartridges 61 and is positioned at the inner side of the auxiliary hole 4, the detonation of the auxiliary hole 4 is performed through the detonating tube detonator 62, the outermost side of the auxiliary hole 4 is blocked through a blocking object 63, and the blocking object 63 can preferably use stemming and other structures;
The blasting of auxiliary hole 4 mainly plays the cushioning effect, because the reason of blasting effort, the circular hole 5 is carried out to the undercut eye 2 unable better and is exploded the work, leads to the blasting probably to fail, so for circular hole 5 can have better blasting effect and add auxiliary hole 4, its loading mode adopts the space charge form according to relevant scene blasting data, the connection in the middle adopts the detonating cord to connect, the charge form of space charge has practiced thrift cartridge 61, better reduction blasting cost, still provide better explosion space of cartridge 61 simultaneously, the blasting efficiency has been improved.
As an alternative embodiment, the charging structure in the peripheral hole 5 includes a plurality of explosive cartridges 61, a detonating tube detonator 62, connecting pieces 64 and detonating cords 65, the number of the explosive cartridges 61 is several and arranged at intervals, each two adjacent explosive cartridges 61 are connected by one connecting piece 64, the connecting piece 64 can preferably use bamboo strips and other structures, the detonating cords 65 are sequentially connected with all the explosive cartridges 61, the detonating tube detonator 62 is connected with the explosive cartridges 61 and is positioned at the inner side of the auxiliary hole 4, the detonation of the auxiliary hole 4 is performed by the detonating tube detonator 62, the outermost side of the peripheral hole 5 is blocked by a blocking object 63, and the blocking object 63 can preferably use stemming and other structures;
The blasting of the surrounding hole 5 mainly plays a shaping role, and blasting vibration impact is generated around the surrounding hole by blasting impact force and explosive blasting form after the hole blasting, so that a required shape is formed by blasting according to the hole position, the charging mode of the blasting machine adopts a separated charging form according to relevant site blasting data, the middle connection adopts detonating cord connection, the explosive roll 61 is saved by the separated charging form, the blasting cost is better reduced, and meanwhile, better blasting space is provided for the explosive roll 61, and the blasting efficiency is improved.
As an alternative embodiment, the device further comprises two space compensation eyes 7, wherein the two space compensation eyes 7 are positioned between the fourth eye group and the fifth eye group and positioned at the top of the roadway section, and the hole depth of the space compensation eyes 7 is the same as the hole depth of the undercut eyes 2.
As an alternative embodiment, the device further comprises two central slitting eyes 8, wherein the number of the central slitting eyes 8 is two, the two central slitting eyes 8 are arranged on the periphery of the slitting central eye 1, the inside of the central slitting eyes is not provided with a charging structure, the arrangement of the central slitting eyes 8 is used for quickly increasing the blasting space in order to generate impact force generated in the moment of perforation after blasting, a better blasting free surface is generated, and enough blasting space is formed for subsequent blasting around.
Example 2
Referring to fig. 2 to 7, the present embodiment provides a tunnel blasting structure, which is mainly applied to smooth blasting, so on the basis of non-smooth blasting in embodiment 1, the tunnel blasting structure further includes a plurality of isolation eyes 9, all the isolation eyes 9 are distributed around the circumferential direction of the slitting center eye 1 and are located at the outer side of the fifth eye group, namely the outer side of the peripheral eye 5, no charging structure is provided in the isolation eyes 9, and smooth blasting is achieved by providing a plurality of isolation eyes 9.
Example 3
The blasting method based on the tunnel blasting structure comprises the following specific steps:
S1, selecting a section of a blasting roadway;
S2, forming holes on the selected tunnel section, wherein the hole types comprise a central hole 1 for cutting, a cutting hole 2 positioned at the periphery of the central hole 1 for cutting, a blasting buffer hole 3 positioned at the periphery of the cutting hole 2, an auxiliary hole 4 positioned at the periphery of the blasting buffer hole 3 and a peripheral hole 5 positioned at the periphery of the auxiliary hole 4, and further forming a space compensation hole 7 and a central cutting hole 8 according to actual needs, wherein when blasting is conducted on a smooth surface, an isolation hole 9 is also required to be formed;
s3, placing the charging structures corresponding to the center hole 1, the blasting buffer hole 3, the auxiliary holes 4 and the peripheral holes 5 in corresponding holes, and plugging the outermost sides of the holes;
s4, detonating the center hole 1, the blasting buffer hole 3, the auxiliary hole 4 and the peripheral hole 5 in sequence.
The foregoing is merely illustrative embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think about variations or substitutions within the technical scope of the present invention, and the invention should be covered. Therefore, the protection scope of the invention is subject to the protection scope of the claims.
Claims (6)
1. The utility model provides a tunnel blasting structure which characterized in that includes a plurality of eye group, wherein: the first eye group, the second eye group, the third eye group, the fourth eye group and the fifth eye group are sequentially arranged from inside to outside, the distance between every two adjacent eye groups gradually increases from inside to outside, all the cut eyes (2), all the burst buffer eyes (3), all the auxiliary eyes (4) and all the peripheral eyes (5) are uniformly distributed around the peripheral direction of the cut central eye (1), each burst buffer eye (3), each auxiliary eye (4) and each peripheral eye (5) are provided with an inner periphery assembly structure;
The explosive charging structure in the slitting center hole (1) comprises a plurality of explosive cartridges (61) and detonating tube detonators (62), wherein the number of the explosive cartridges (61) is several, the detonating tube detonators (62) are connected with the explosive cartridges (61) and are positioned on the inner side of the slitting center hole (1), and the outermost side of the slitting center hole (1) is plugged by plugs (63);
The charging structure in the explosion buffer hole (3) comprises a plurality of cartridges (61) and connecting pieces (64), wherein the number of the cartridges (61) is a plurality of cartridges and is arranged at intervals, every two adjacent cartridges (61) are connected through one connecting piece (64), and the outermost side of the explosion buffer hole (3) is plugged through a plug (63);
The explosive charging structure in the auxiliary hole (4) comprises explosive cartridges (61), detonating tube detonators (62), connecting pieces (64) and detonating cords (65), wherein the number of the explosive cartridges (61) is a plurality of and is set at intervals, every two adjacent explosive cartridges (61) are connected through one connecting piece (64), the detonating cords (65) are sequentially connected with all the explosive cartridges (61), and the detonating tube detonators (62) are connected with the explosive cartridges (61) and are located on the inner side of the auxiliary hole (4), and the outermost side of the auxiliary hole (4) is plugged through plugs (63);
The utility model provides a powder charge structure in surrounding eye (5) includes cartridge (61), detonating tube detonator (62), connecting piece (64) and detonating cord (65), the quantity of cartridge (61) is a plurality of and interval setting, every two are adjacent be connected through one between cartridge (61) connecting piece (64), detonating cord (65) with all cartridge (61) connect gradually, detonating tube detonator (62) with cartridge (61) are connected and are located the inboard of auxiliary eye (4), the outermost of surrounding eye (5) is through shutoff plug (63).
2. The roadway blasting structure of claim 1, wherein: the undercut eye (2) is in a round table shape, and the aperture of the outermost side of the undercut eye (2) is larger than the aperture of the innermost side of the undercut eye (2).
3. The roadway blasting structure of claim 1, wherein: the system further comprises two space compensation eyes (7), wherein the two space compensation eyes (7) are positioned between the fourth eye group and the fifth eye group and are positioned at the top of the roadway section.
4. The roadway blasting structure of claim 1, wherein: the cutting machine further comprises central cutting holes (8), the number of the central cutting holes (8) is two, and the two central cutting holes (8) are all arranged on the periphery of the cutting central hole (1).
5. The roadway blasting structure of claim 1, wherein: the device further comprises a plurality of isolation eyes (9), wherein all the isolation eyes (9) are distributed around the circumferential direction of the undercut center eye (1) and are positioned outside the fifth eye group.
6. A blasting method based on the tunnel blasting structure according to any one of claims 1 to 5, comprising the specific steps of:
S1, selecting a section of a blasting roadway;
S2, forming holes on the selected tunnel section, wherein the hole types comprise a center hole (1), a center hole (2) positioned at the periphery of the center hole (1), a blasting buffer hole (3) positioned at the periphery of the center hole (2), an auxiliary hole (4) positioned at the periphery of the blasting buffer hole (3) and a peripheral hole (5) positioned at the periphery of the auxiliary hole (4);
S3, placing the charging structures corresponding to the center hole (1), the blasting buffer hole (3), the auxiliary holes (4) and the peripheral holes (5) into corresponding holes, and plugging the outermost sides of the holes;
s4, detonating the center hole (1), the blasting buffer hole (3), the auxiliary hole (4) and the peripheral hole (5) in sequence.
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