CN211041967U - Tunnel directional presplitting differential blasting control device - Google Patents
Tunnel directional presplitting differential blasting control device Download PDFInfo
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- CN211041967U CN211041967U CN201921670275.0U CN201921670275U CN211041967U CN 211041967 U CN211041967 U CN 211041967U CN 201921670275 U CN201921670275 U CN 201921670275U CN 211041967 U CN211041967 U CN 211041967U
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Abstract
The utility model discloses a directional presplitting millisecond blasting controlling means in tunnel, include: a plurality of blast holes; a plurality of explosive tubes, each explosive tube is arranged in a corresponding blast hole in a detachable manner, and each explosive tube comprises: an energy-gathering tube; a plug for plugging an opening of the respective blast hole; the energy-gathering explosive columns are arranged in the energy-gathering pipes at equal intervals; wherein, the energy-gathering explosive columns of two adjacent explosive tubes are arranged in a staggered way; and an initiation device for controlling initiation of each of the explosive tubes. By adopting the utility model, a plurality of energy-gathering explosive columns are arranged at intervals in each explosive tube, so that the primary explosive quantity can be reduced, the cost is reduced, and the blasting shock damage and the damage to surrounding rocks are reduced; and the energy-gathering explosive columns of two adjacent explosive tubes are staggered with each other, so that the expansion direction of cracks can be effectively controlled, the phenomenon of overexcavation and underexcavation is avoided, the distance between blast holes is increased, the number of the blast holes is reduced, and the construction progress is accelerated.
Description
Technical Field
The utility model relates to an engineering blasting technical field, in particular to directional presplitting millisecond blasting controlling means in tunnel.
Background
Along with economic society's development, the rapid development of traffic industry, the tunnel construction of large-section large-span is also more and more, however how to prevent the phenomenon of overexcavation undermining in tunnel mine construction, accelerates the construction progress simultaneously, practices thrift the excavation cost, becomes the problem that the engineering industry is anxious to solve. At present, a pre-splitting blasting technology is generally adopted to carry out large-section and long-reach tunnel blasting excavation in tunnel mine construction, energy-gathering directional pre-splitting blasting is mainly adopted in the pre-splitting blasting technology, but the pre-splitting blasting technology has the defects of small hole pitch, dense hole arrangement, high excavation cost, simultaneous blasting of multiple blast holes, large seismic damage to surrounding rocks, obvious overexcavation and underexcavation phenomena, slow construction progress and the like.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information constitutes prior art already known to a person skilled in the art.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a directional presplitting millisecond blasting controlling means in tunnel to overcome the super digging that exists among the prior blasting technique and owe to dig phenomenon, blasting powder quantity big and to the big shortcoming of country rock damage.
In order to achieve the above object, the utility model provides a directional presplitting millisecond blasting controlling means in tunnel, include: the blast holes are arranged on the section of the rock to be blasted at intervals; a plurality of explosive tube, this explosive tube with the big gun hole one-to-one sets up, and every this explosive tube with can dismantle the mode set up in corresponding in the big gun hole, wherein, every this explosive tube includes: an energy-gathering tube; the plug is arranged at the end part of the energy-gathering tube, is positioned at the opening of the corresponding blast hole and is used for plugging the opening of the corresponding blast hole; the energy-gathering explosive columns are arranged in the energy-gathering pipes at equal intervals, all the energy-gathering explosive columns are connected into a whole in series through first detonating cords, and the first detonating cords penetrate through the blocking objects and extend to the outer parts of the corresponding blast holes; wherein the energy-gathering explosive columns of two adjacent explosive tubes are arranged in a staggered manner; and an initiation device connected to each of the first detonating cords by a second detonating cord for controlling initiation of each of the explosive tubes.
Preferably, in the above technical solution, each explosive tube further includes a plurality of spacers, and each spacer is disposed in the energy-collecting tube and located between the energy-collecting columns or between the energy-collecting column and an end of the energy-collecting tube.
Preferably, in the above technical solution, the length of the spacer of each explosive tube is equal to the length of the energy-collecting explosive column, and the energy-collecting explosive columns of two adjacent explosive tubes are arranged opposite to the spacer.
Preferably, in the above technical solution, each of the spacers is filled with sand or water.
Preferably, in the above technical scheme, a delayed initiation device is arranged in each energy-collecting explosive column, and each delayed initiation device is connected in series to the corresponding first detonating cord.
Preferably, in the above technical scheme, each delayed initiation device is a delayed electric detonator.
Preferably, in the above technical scheme, the initiation device includes an initiator and an initiation detonator, the initiator is connected to the initiation detonator through a cable, and the initiation detonator is connected to the first detonating cord of each explosive tube through the second detonating cord.
Compared with the prior art, the utility model discloses following beneficial effect has:
1. The utility model discloses an all big gun holes spaced set up on the rock section of waiting to explode, be provided with a explosive tube in each big gun hole, and the spaced setting has a plurality of energy-gathering powder columns in each explosive tube, and each explosive tube explodes from the drill way to the hole bottom in proper order to reduce one-time explosive amount, reduce cost, reduce blasting shock damage and to the damage of country rock, prevent effectively that the country rock from taking place the unstability; and the energy-gathering explosive columns of two adjacent explosive tubes are arranged in a staggered manner, after one energy-gathering explosive column of one explosive tube explodes, the section of blast hole adjacent to the energy-gathering explosive column of the other explosive tubes on the same section has a crack expansion guiding effect, and the expansion direction of the crack can be effectively controlled, so that the phenomenon of overexcavation and underexcavation is avoided, the distance between the blast holes can be increased, the number of the blast holes is reduced, and the construction progress is accelerated.
2. Each spacing column of the utility model is arranged in the energy-gathering pipe and positioned between the energy-gathering explosive columns or between the energy-gathering explosive columns and the end parts of the energy-gathering pipe, and sandstone or water is filled in each spacing column, so that the spacing columns not only have the effect of ensuring the interval arrangement of the energy-gathering explosive columns, but also can effectively prevent the energy-gathering explosive columns from being serially exploded, thereby improving the blasting effect; and the length of the spacing column of each explosive tube is equal to that of the energy-collecting explosive column, and the energy-collecting explosive columns of two adjacent explosive tubes are arranged opposite to the spacing columns, so that the blasting effect can be improved.
Drawings
Fig. 1 is a schematic structural diagram of the main body of the directional presplitting differential blasting control device for the tunnel according to the present invention.
3 fig. 3 2 3 is 3 a 3 sectional 3 view 3 taken 3 along 3 line 3 a 3- 3 a 3 of 3 fig. 3 1 3 according 3 to 3 the 3 present 3 invention 3. 3
Description of the main reference numerals:
1-an initiator, 2-an initiation detonator, 3-a second detonating cord, 4-a blast hole, 5-a explosive tube, 51-a blocking object, 52-an energy-gathering tube, 53-a time-delay initiation device, 54-an energy-gathering explosive column, 55-a spacing column and 56-a first detonating cord.
Detailed Description
The following detailed description of the present invention is provided in conjunction with the accompanying drawings, but it should be understood that the scope of the present invention is not limited by the following detailed description.
Throughout the specification and claims, unless explicitly stated otherwise, the word "comprise", or variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated element or component but not the exclusion of any other element or component.
Fig. 1 to 2 show a schematic structural diagram of a directional pre-splitting differential blasting control device for a tunnel according to a preferred embodiment of the present invention, wherein the blasting control device comprises a plurality of blast holes 4, a plurality of explosive tubes 5 and an initiating device. Referring to fig. 1 and 2, all the blast holes 4 are arranged on the rock section to be blasted at intervals, i.e. a plurality of blast holes 4 are drilled on the rock section to be blasted at intervals; the explosive tubes 5 are arranged in one-to-one correspondence with the blast holes 4, and each explosive tube 5 is detachably arranged in the corresponding blast hole 4. Wherein, each explosive tube 5 comprises a shaped tube 52, a plug 51 and a plurality of shaped charge columns 54, and the diameter of the cross section of the shaped tube 52 is not larger than that of the blast hole 4 so as to facilitate the installation of the explosive tube 5, so that the shaped tube 52 can be inserted into the blast hole 4; the plug 51 is arranged at the end part of the energy-collecting tube 52 and is positioned at the opening of the corresponding blast hole 4, and is used for plugging the opening of the corresponding blast hole 4, so that the energy-collecting tube 52 can be packaged in the blast hole 4, and the subsequent blasting operation is facilitated; the energy-collecting explosive columns 54 are arranged in the energy-collecting pipes 52 at equal intervals, all the energy-collecting explosive columns 54 are connected into a whole in series through first detonating cords 56, the first detonating cords 56 penetrate through the blocking objects 51 and extend to the outer parts of the corresponding blast holes 4 for leading the explosive pipes 5, so that all the energy-collecting explosive columns 54 are sequentially detonated from the orifices to the bottoms of the holes, the primary detonating explosive quantity is reduced, the cost is reduced, the blasting shock damage and the damage to surrounding rocks can be reduced, and the instability of the surrounding rocks is effectively prevented; after one energy-collecting explosive column 54 of one explosive tube 5 explodes, the blast hole 4 at the section adjacent to the energy-collecting explosive column 54 of the other explosive tube 5 on the same section and at the interval between the energy-collecting explosive columns 54 of the other explosive tubes 5 plays a role in crack expansion guiding, so that the crack expansion direction can be effectively controlled, the phenomenon of overexcavation and underexcavation is avoided, the interval between the blast holes 4 can be increased, the number of the blast holes 4 is reduced, and the construction progress is accelerated; an initiation device is connected to each first detonating cord 56 by a second detonating cord 3 for controlling the initiation of each explosive tube 5.
With continued reference to fig. 1 and 2, preferably, each charge tube 5 further includes a plurality of spacers 55, each spacer 55 being disposed within the shaped charge 52 and between the shaped charges 54 or between the shaped charge 54 and an end of the shaped charge 52 to ensure that the shaped charges 54 are spaced apart. Further preferably, the length of the spacer 55 of each explosive tube 5 is equal to the length of the energy-concentrating column 54, and the energy-concentrating columns 54 of two adjacent explosive tubes 5 are arranged opposite to the spacer 55, that is, in two adjacent explosive tubes 5, the structure of one explosive tube 5 is, in order from the opening of the blast hole 4 to the bottom of the hole: the structure of the other explosive tube 5 from the opening of the blast hole 4 to the bottom of the hole is as follows: the spacing column 55, the energy-gathering explosive column 54, the spacing column 55, the energy-gathering explosive columns 54 and … … and the spacing column 55 are used for improving the blasting effect. And each spacing column 55 is filled with sandstone or water, so that the energy-gathering explosive columns 54 can be effectively prevented from being serially exploded, and the blasting effect is further improved. The number of the energy-gathering explosive columns 54 can be determined according to the length of the conventional energy-gathering explosive columns 54 and the length of the blast hole 4 dug once.
With continued reference to fig. 1 and 2, preferably, a delayed initiation device 53 is disposed within each energy concentrating charge 54, and each delayed initiation device 53 is connected in series with a corresponding first detonating cord 56, so as to avoid the detonation of the energy concentrating charge 54 from affecting the booster detonation of the first detonating cord 56. Further preferably, each delayed initiation device 53 is a delayed electric detonator.
With continued reference to fig. 1 and 2, the initiating means preferably comprises an initiator 1 and an initiating detonator 2, the initiator 1 being connected to the initiating detonator 2 by an electrical cable, the initiating detonator 2 being connected to the first detonating cord 56 of each explosive tube 5 by a second detonating cord 3 for controlling the initiation of the explosive tubes 5.
When in use, the explosive tube 5 is assembled, the assembled explosive tube 5 is inserted into the corresponding blast hole 4, and then the opening of the blast hole 4 is sealed by the plug 51, wherein the plug 51 can be made of foam mud material; connecting the initiation device, and connecting the initiation device with the first detonating cord 56 of each explosive tube 5 into a whole by using the second detonating cord 3; wherein, all structures from the hole opening of the blast hole 4 to the hole bottom are as follows in sequence: explosive tubes 5 of the energy-gathering explosive columns 54, the spacing columns 55 and … … and the energy-gathering explosive columns 54 are first explosive tubes, and the rest explosive tubes 5 are second explosive tubes; controlling the detonator 1 to detonate, wherein the detonator 1 transmits a detonation signal to the detonator 2 through a cable, the detonator 2 transmits the detonation signal to the second detonating cord 3, the second detonating cord 3 simultaneously transmits the detonation signal to all the first detonating cords 56, the first detonating cords 56 transmit the detonation signal to the time-delay detonating device 53 and then cause the first energy-collecting explosive columns 54 of the first explosive tubes to detonate, and at the moment, the section of blast hole 4 where the first spacing columns 55 of the second explosive tubes on the same section are located plays a role in guiding crack propagation; after the first energy-gathering explosive column 54 of the first explosive tube is detonated, the first energy-gathering explosive column 54 of the second explosive tube starts to be detonated, and the section of the blast hole 4 where the first spacing column 55 of the first explosive tube is located plays a role in crack propagation guiding; after the first energy-gathering explosive column 54 of the second explosive tube is detonated, the second energy-gathering explosive column 54 of the first explosive tube starts to detonate, and the section of the blast hole 4 where the second spacing column 55 of the second explosive tube is located plays a role in crack propagation guiding, and the steps are repeated in a reciprocating mode until the detonation of the bottom explosive section is completed. By adopting the blasting control device, the aims of quick, economic, safe and efficient quick pre-splitting blasting construction can be fulfilled.
The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.
Claims (7)
1. The utility model provides a directional presplitting millisecond blasting controlling means in tunnel which characterized in that includes:
The blast holes are arranged on the section of the rock to be blasted at intervals;
A plurality of explosive tube, this explosive tube with the big gun hole one-to-one sets up, and every this explosive tube with can dismantle the mode set up in corresponding in the big gun hole, wherein, every this explosive tube includes:
An energy-gathering tube;
The plug is arranged at the end part of the energy-gathering tube, is positioned at the opening of the corresponding blast hole and is used for plugging the opening of the corresponding blast hole; and
The energy-gathering explosive columns are arranged in the energy-gathering pipe at equal intervals, all the energy-gathering explosive columns are connected into a whole in series through a first detonating cord, and the first detonating cord penetrates through the plug and extends to the outside of the corresponding blast hole;
Wherein the energy-gathering explosive columns of two adjacent explosive tubes are arranged in a staggered manner; and
An initiation device connected to each of said first detonating cords by a second detonating cord for controlling initiation of each of said explosive tubes.
2. The directional pre-splitting tunnel differential blasting control device according to claim 1, wherein each of the blasting cartridges further comprises a plurality of spacers, each of the spacers being disposed in the energy-collecting tube and located between the energy-collecting cartridges or between the energy-collecting cartridges and the end of the energy-collecting tube.
3. The device for controlling directed tunnel pre-splitting micro-differential blasting according to claim 2, wherein the length of the spacer of each of the blasting cartridges is equal to the length of the energy-gathered blasting cartridge, and the energy-gathered blasting cartridges of two adjacent blasting cartridges are arranged opposite to the spacer.
4. The directional presplitting differential blasting control device for the tunnel according to claim 2, characterized in that each of the spacers is filled with sand or water.
5. The directional presplitting differential blasting control device for the tunnel according to claim 1, characterized in that a time delay initiating device is arranged in each energy-gathering explosive column, and each time delay initiating device is connected in series with the corresponding first detonating cord.
6. A directional pre-splitting differential blasting control device for a tunnel according to claim 5, wherein each delayed initiation device is a delayed electric detonator.
7. The directional pre-splitting differential blasting control device for the tunnel according to claim 1, wherein the initiation device comprises an initiator and an initiation detonator, the initiator is connected with the initiation detonator through a cable wire, and the initiation detonator is connected with the first detonating cord of each explosive tube through the second detonating cord.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921670275.0U CN211041967U (en) | 2019-10-08 | 2019-10-08 | Tunnel directional presplitting differential blasting control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921670275.0U CN211041967U (en) | 2019-10-08 | 2019-10-08 | Tunnel directional presplitting differential blasting control device |
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| Publication Number | Publication Date |
|---|---|
| CN211041967U true CN211041967U (en) | 2020-07-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921670275.0U Expired - Fee Related CN211041967U (en) | 2019-10-08 | 2019-10-08 | Tunnel directional presplitting differential blasting control device |
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| Country | Link |
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| CN (1) | CN211041967U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112729020A (en) * | 2020-12-29 | 2021-04-30 | 安徽理工大学 | Energy-gathering joint cutting pipe |
-
2019
- 2019-10-08 CN CN201921670275.0U patent/CN211041967U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112729020A (en) * | 2020-12-29 | 2021-04-30 | 安徽理工大学 | Energy-gathering joint cutting pipe |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200717 Termination date: 20211008 |
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| CF01 | Termination of patent right due to non-payment of annual fee |