CN115585713B - Digital electronic detonator and detonating cord fused shaft tunneling delay detonating circuit - Google Patents
Digital electronic detonator and detonating cord fused shaft tunneling delay detonating circuit Download PDFInfo
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- CN115585713B CN115585713B CN202211148477.5A CN202211148477A CN115585713B CN 115585713 B CN115585713 B CN 115585713B CN 202211148477 A CN202211148477 A CN 202211148477A CN 115585713 B CN115585713 B CN 115585713B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D1/00—Blasting methods or apparatus, e.g. loading or tamping
- F42D1/04—Arrangements for ignition
- F42D1/045—Arrangements for electric ignition
- F42D1/05—Electric circuits for blasting
- F42D1/055—Electric circuits for blasting specially adapted for firing multiple charges with a time delay
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Abstract
The invention discloses a shaft tunneling delay detonating circuit with a digital electronic detonator and a detonating cord fused. The well bore tunneling section is provided with a central cut hole (11), an annular cut hole (10), auxiliary holes (9) and peripheral holes (8) are sequentially arranged around the central cut hole (11), and the peripheral holes (8) are arranged along the well bore wall; the central cut hole (11) is provided with a first group of digital electronic detonators (2), each hole bottom of the annular cut hole (10) is provided with a second group of digital electronic detonators (3), each auxiliary hole (9) and peripheral holes (8) are provided with detonating cords (1), and each detonating cord (1) is connected with a third group of digital electronic detonators (4). The invention has the advantages of ensuring safe production, improving the well quality, saving the production cost and reducing the labor intensity.
Description
Technical Field
The invention belongs to the technical field of engineering blasting delay detonating circuits, and particularly relates to a shaft tunneling delay detonating circuit with a digital electronic detonator and a detonating cord fused, which is applied to blast hole delay detonating in a shaft tunneling blasting process.
Background
The digital electronic detonator is a highly reliable, highly safe and highly accurate electronic detonator which adopts an autonomous design special chip. The anti-interference device has strong anti-interference capability, is internally provided with unique UID codes, pipe codes and detonation passwords, and can be programmed on line, detected on line and calibrated on line delay time. At present, most provinces have required underground mines to develop comprehensive use of digital electronic detonators, and common industrial detonators such as non-detonating tube detonators are not sold and supplied.
According to investigation, a single digital electronic detonator delay initiation circuit is adopted in a mine shaft tunneling blasting initiation circuit, namely, digital electronic detonator in-hole delay initiation is adopted in all shaft tunneling blast holes, so that the digital electronic detonator is large in dosage, large in operation workload and poor in safety and reliability, and the peripheral holes are not charged and initiated according to the requirements of smooth blasting, so that the shaft forming quality is obviously reduced.
The digital electronic detonator is popularized and used in metal nonmetal underground mines, and has the problems of safe production and production cost.
The safety production aspect is as follows: (1) The digital electronic detonator has higher requirements on the capability level of operators, and has the advantages of increased difficulty in testing, charging, delay time setting, wire connection and detonation operation and increased safety risk; (2) The underground tunneling shaft has poor working environment, and in the environment with poor ventilation and illumination conditions, the working of testing, charging, delay time setting, line connection and the like are carried out for a long time, so that the workload of operators is increased, the physical power of the operators is more consumed, the negative dysphoria is increased, and the safety risk is correspondingly increased; (3) Practice shows that in the small-section and multi-hole-number shaft tunneling engineering of the digital electronic detonator, blind cannons (explosion rejection) are multiple, and the blind cannons are always treated as a high-risk operation; (4) The digital electronic detonator has high cost, and the outsourcing unit can further reduce the pressure from the aspects of drilling quantity, dosage and hole number, so that the roadway forming quality of a shaft is further reduced, the vibration and damage of tunneling construction to surrounding rock are further increased, and the safety risk of underground operation and the accident potential of roof caving are further increased.
The production cost aspect is as follows: (1) Poor well shaft roadway forming quality, large vibration damage to surrounding rock and obvious increase of supporting cost; (2) The roadway forming quality of the shaft is poor, the super-digging amount is large, and the shoveling, transporting and lifting cost is obviously increased; (3) The unit price of the digital electronic detonator is generally higher than that of a common detonator, and the comprehensive use of the digital electronic detonator can obviously increase the consumption cost of civil explosive equipment.
Disclosure of Invention
Aiming at the problems of the existing digital electronic detonator priming circuit, the invention provides the shaft tunneling delay priming circuit which is formed by fusing the digital electronic detonator and the detonating cord, and the method has the advantages of convenient operation, relatively safe construction process, ensured priming effect, improved roadway forming quality and reduced comprehensive cost.
The technical scheme of the invention is as follows: a well shaft tunneling delay detonating circuit with a digital electronic detonator and a detonating cord fused, wherein a well shaft tunneling section is provided with a central cut hole, an annular cut hole, auxiliary holes and peripheral holes are sequentially arranged around the central cut hole, and the peripheral holes are arranged along the well shaft wall; the first group of digital electronic detonators are placed at the bottoms of the central cut holes, the second group of digital electronic detonators are placed at the bottoms of each annular cut hole, detonators are placed in each auxiliary hole and peripheral holes, and each detonating cord is connected with a third group of digital electronic detonators.
According to the embodiment of the invention, the detonator leg wires of the first group of digital electronic detonators, the second group of digital electronic detonators and the third group of digital electronic detonators are connected with the digital electronic detonator wiring card, and the digital electronic detonator wiring card is connected with the scanning-code-group-net detonator through the networking main wire.
According to the embodiment of the invention, the central cut hole realizes hole bottom detonation through a first group of digital electronic detonators, and the annular cut hole realizes hole bottom detonation through a second group of digital electronic detonators.
According to the embodiment of the invention, the detonation time of the first group of digital electronic detonators in the central cut hole is delayed by the detonation time of the second group of digital electronic detonators in the annular cut hole.
According to the embodiment of the invention, the third group of digital electronic detonators detonates the detonating cord so as to charge the explosive in the detonating hole.
According to the embodiment of the invention, the blast holes of the central cut hole, the annular cut hole, the auxiliary holes and the peripheral holes are detonated according to the sections; 1Ms represents a section 1 of the blasthole, 2Ms represents a section 2 of the blasthole, 3Ms represents a section 3 of the blasthole, 4Ms represents a section 4 of the blasthole, 5Ms represents a section 5 of the blasthole, 6Ms represents a section 6 of the blasthole, 7Ms represents a section 7 of the blasthole, 8Ms represents a section 8 of the blasthole, and 9Ms represents a section 9 of the blasthole; the delay time interval value between each two adjacent sections is 250 ms-750 ms.
According to the embodiment of the invention, the number of the annular undercut holes is 8, and the adjacent blast holes are respectively detonated according to the sections of 1Ms and 2 Ms; the central cut hole is detonated according to the 3Ms section; 3 circles of auxiliary holes are arranged, and the first circle of auxiliary holes are detonated according to 4Ms sections; the second circle of auxiliary holes are respectively detonated according to the 5Ms sections; the third circle of auxiliary holes are detonated according to the sections of 6Ms and 7Ms respectively; the peripheral holes are detonated according to 8Ms and 9Ms respectively.
The detonating circuit adopts a part of digital electronic detonators to directly detonate the charges in the cut holes, and the part of digital electronic detonators detonates detonators are arranged in the auxiliary holes and the surrounding hole blast holes so as to detonate the fusion delay detonating circuit of the charges in the blast holes.
According to the technical scheme, under the premise that parameters such as the number of the blast holes, the positions of the blast holes and the like are unchanged, the digital electronic detonator is placed into the bottom of the cut hole, so that the requirements of detonating the bottom of the cut hole and guaranteeing the cut effect are met.
According to the technical scheme, the detonating cord is placed into the auxiliary hole and the peripheral hole to serve as a detonation source for charging in the hole, a digital electronic detonator arranged in a certain section is adopted to detonate the detonating cord required by the same section according to the designed delay section, and then the charging in the hole is started, so that the purposes of reducing the number of the digital electronic detonators, reducing the use cost of the detonators, being convenient and efficient in operation, reducing the working time of operators in severe environments, improving the safety guarantee and smoothly realizing smooth blasting by using the detonating cord to detonate in the peripheral hole and improving the well-forming quality of a shaft are achieved.
The delayed sequence of the cut holes adopts 8 annular cut holes to be detonated firstly, the interval is set to be 1Ms and 2Ms, then the cut holes are detonated at the center, the setting is set to be 3Ms, and the detonation at the bottom of the hole is adopted, so that broken bodies in the cut cavity can be conveniently and smoothly thrown out, and the cut purpose is achieved.
And detonating cords are placed in the auxiliary holes and the peripheral holes, and then the detonating cords of the same section are firmly bound together outside the holes according to the number of the same section holes and the delay requirement, and then the detonating cords of the same section are detonated by the digital electronic detonators which are arranged into corresponding sections.
And binding explosive on the detonating cord by the peripheral holes according to the loading quantity and loading structure designed by smooth blasting, placing the explosive into the holes, binding the detonating cords of the same section together outside the holes according to the number of the same section of holes and the time delay requirement, and detonating the digital electronic detonator arranged as the section.
The invention has the outstanding advantage of greatly reducing the usage amount of the digital electronic detonator. According to the design of a shaft with the same section size and the same hole site, the primary single digital electronic detonator priming circuit needs 83 digital electronic detonators; by adopting the fusion initiation circuit, only 15 digital electronic detonators are needed; according to market price measurement and calculation of the digital electronic detonator and the detonating cord, only one item of detonating equipment is required for each tunneling cycle, and the cost can be saved by 1088 yuan.
The blasting fuse detonating is used for the peripheral holes, so that smooth blasting can be smoothly realized to improve the well forming quality of a shaft, and the purposes of reducing the disturbance damage degree of blasting to surrounding rock of the shaft and controlling the roof caving safety risk are achieved.
The invention greatly reduces the use amount of the digital electronic detonator, thereby greatly shortening the time of testing, charging, time delay setting, wire connection and detonating operation of operators in underground severe environments, reducing the labor intensity and being beneficial to ensuring the safe production.
Therefore, the invention has the advantages of ensuring safe production, improving the well quality, saving the production cost and reducing the labor intensity.
Drawings
FIG. 1 is a schematic diagram of a digital electronic detonator and detonating cord fused detonating circuit structure.
FIG. 2 is a schematic diagram of borehole tunneling borehole classification.
FIG. 3 is a schematic diagram of a delayed detonation section arrangement of a borehole tunneling blasthole.
1-detonating cord; 2-a first group of digital electronic detonators; 3-a second group of digital electronic detonators; 4-a third group of digital electronic detonators; 5-a digital electronic detonator wiring card; 6-networking main line; 7-scanning a net-combining detonator; 8-peripheral holes; 9-auxiliary holes; 10-annular undercut holes; 11-central cut hole.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical designs and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention. In addition, the technical features of the embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
As shown in fig. 1 and 2, a delayed initiation network for shaft tunneling, in which a digital electronic detonator and a detonating cord are fused, wherein a central cut hole 11 is formed in the shaft tunneling section, an annular cut hole 10, an auxiliary hole 9 and a peripheral hole 8 are sequentially formed around the central cut hole 11, and the peripheral hole 8 is formed along the wall of the shaft; the first group of digital electronic detonators 2 are placed at the hole bottoms of the central cut holes 11, the second group of digital electronic detonators 3 are placed at the hole bottoms of the annular cut holes 10, detonating cords 1 are placed in each auxiliary hole 9 and the peripheral holes 8, and each detonating cord 1 is connected with the third group of digital electronic detonators 4.
The detonator leg wires of the first group of digital electronic detonators 2, the second group of digital electronic detonators 3 and the third group of digital electronic detonators 4 are connected with digital electronic detonator wiring cards 5, and the digital electronic detonator wiring cards 5 are connected with a scanning code group network blaster 7 through a networking main wire 6; the scanning code-combining detonator 7 is used for scanning code recognition, detection, delay time setting and networking of all detonators in the detonating circuit through the networking main wire 6, the digital electronic detonator wiring card 5 and the detonator leg wires, and detonating after the detonating password is input.
The central cut hole 11 and the annular cut hole 10 are directly detonated by a digital electronic detonator to ensure the cut hole blasting effect.
The central cut hole 11 is initiated at a certain interval after the annular cut hole 10 is delayed, so that broken bodies in the cavity can be conveniently and smoothly thrown out, and the purpose of cutting is achieved.
The peripheral holes 8 realize smooth blasting through the detonating cord 1 so as to improve the well forming quality of a shaft, thereby achieving the purposes of reducing the disturbance damage degree of blasting to surrounding rock of the shaft and controlling the roof caving safety risk.
As shown in fig. 3, the blast holes of the central cut hole 11, the annular cut hole 10, the auxiliary holes 9 and the peripheral holes 8 are detonated according to the sections; 1Ms represents a section 1 of the blasthole, 2Ms represents a section 2 of the blasthole, 3Ms represents a section 3 of the blasthole, 4Ms represents a section 4 of the blasthole, 5Ms represents a section 5 of the blasthole, 6Ms represents a section 6 of the blasthole, 7Ms represents a section 7 of the blasthole, 8Ms represents a section 8 of the blasthole, and 9Ms represents a section 9 of the blasthole; the delay time interval value between each two adjacent sections is 250 ms-750 ms.
The number of the annular undercut holes 10 is 8, and the adjacent blast holes are detonated according to the sections of 1Ms and 2 Ms; the central cut hole 11 is detonated according to the 3Ms section; 3 circles of auxiliary holes 9 are arranged, and the first circle of auxiliary holes 9 are detonated according to 4Ms sections; the second circle of auxiliary holes 9 are detonated according to the 5Ms section; the third circle of auxiliary holes 9 are detonated according to the sections of 6Ms and 7Ms respectively; the peripheral holes 8 are detonated according to the sections 8Ms and 9Ms respectively.
The invention has the outstanding advantage of greatly reducing the usage amount of the digital electronic detonator. According to the design of a shaft with the same section size and the same hole site, the primary single digital electronic detonator priming circuit needs 83 digital electronic detonators. By adopting the fusion initiation circuit, only 15 digital electronic detonators are needed. According to market price measurement and calculation of the digital electronic detonator and the detonating cord, only one item of detonating equipment is required for each tunneling cycle, and the cost can be saved by 1088 yuan.
According to the invention, the detonating cord is used for detonating the peripheral holes 8, so that smooth blasting can be smoothly realized to improve the well forming quality of a shaft, and the purposes of reducing the disturbance damage degree of blasting to surrounding rock of the shaft and controlling the roof caving safety risk are achieved.
The invention greatly reduces the use amount of the digital electronic detonator, thereby greatly shortening the time of testing, charging, time delay setting, wire connection and detonating operation of operators in underground severe environments, reducing the labor intensity and being beneficial to ensuring the safe production.
Therefore, the invention has the advantages of ensuring safe production, improving the well quality, saving the production cost and reducing the labor intensity.
It should be noted that the above embodiments are only for illustrating the technical design of the present invention, but not for limiting the technical design, and although the present invention has been described in detail with reference to the examples, it should be understood that the technical design of the present invention can be modified or equivalent to the above embodiments without departing from the spirit and scope of the technical design of the present invention, and the scope of the claims of the present invention should be covered.
Claims (2)
1. The well shaft tunneling delay detonating circuit is characterized in that a central cut hole (11) is formed in a well shaft tunneling section, an annular cut hole (10), auxiliary holes (9) and peripheral holes (8) are sequentially formed around the central cut hole (11), and the peripheral holes (8) are formed along the well shaft wall; the hole bottoms of the central cut holes (11) are embedded with a first group of digital electronic detonators (2), each hole bottom of the annular cut holes (10) is embedded with a second group of digital electronic detonators (3), each auxiliary hole (9) and peripheral holes (8) are embedded with detonating cords (1), and each detonating cord (1) is connected with a third group of digital electronic detonators (4);
the central cut hole (11) realizes hole bottom detonation through a first group of digital electronic detonators (2), and the annular cut hole (10) realizes hole bottom detonation through a second group of digital electronic detonators (3);
the detonation time of the first group of digital electronic detonators (2) in the central cut hole (11) is delayed by the detonation time of the second group of digital electronic detonators (3) in the annular cut hole (10);
the third group of digital electronic detonators (4) detonates the detonating cord (1) so as to charge the explosive in the detonating hole;
the number of the annular undercut holes (10) is 8, and adjacent blast holes are respectively detonated according to the sections of 1Ms and 2 Ms; the central cut hole (11) is detonated according to 3Ms sections; 3 circles of auxiliary holes (9) are arranged, and the first circle of auxiliary holes (9) are detonated according to the 4Ms sections; the second circle of auxiliary holes (9) are respectively detonated according to the 5Ms section; the third circle of auxiliary holes (9) are detonated according to the sections of 6Ms and 7Ms respectively; the peripheral holes (8) are detonated according to 8Ms and 9Ms sections respectively;
the central cut hole (11), the annular cut hole (10), the auxiliary holes (9) and the blast holes of the peripheral holes (8) are detonated according to the sections; 1Ms represents a section 1 of the blasthole, 2Ms represents a section 2 of the blasthole, 3Ms represents a section 3 of the blasthole, 4Ms represents a section 4 of the blasthole, 5Ms represents a section 5 of the blasthole, 6Ms represents a section 6 of the blasthole, 7Ms represents a section 7 of the blasthole, 8Ms represents a section 8 of the blasthole, and 9Ms represents a section 9 of the blasthole; the delay time interval value between each two adjacent sections is 250 ms-750 ms.
2. The wellbore tunneling delay detonating circuit for fusing a digital electronic detonator and a detonating cord according to claim 1 is characterized in that detonator leg wires of the first group of digital electronic detonators (2), the second group of digital electronic detonators (3) and the third group of digital electronic detonators (4) are connected with digital electronic detonator wiring cards (5), and the digital electronic detonator wiring cards (5) are connected with a scanning-code-group-net detonating device (7) through a networking main wire (6).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211148477.5A CN115585713B (en) | 2022-09-21 | 2022-09-21 | Digital electronic detonator and detonating cord fused shaft tunneling delay detonating circuit |
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| CN202211148477.5A CN115585713B (en) | 2022-09-21 | 2022-09-21 | Digital electronic detonator and detonating cord fused shaft tunneling delay detonating circuit |
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| CN115585713A CN115585713A (en) | 2023-01-10 |
| CN115585713B true CN115585713B (en) | 2023-07-04 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP6516520B2 (en) * | 2015-03-19 | 2019-05-22 | 株式会社フジタ | Blasting method |
| CN211824100U (en) * | 2019-11-14 | 2020-10-30 | 贵州路桥集团有限公司 | Detonator detonation system for mixed use of detonators and detonator arrangement system for tunnel blasting |
| CN111578802A (en) * | 2020-05-28 | 2020-08-25 | 广州市顺兴石场有限公司 | High-acquisition-degree mine smooth blasting mining method |
| CN114111478B (en) * | 2020-08-27 | 2023-10-27 | 西南科技大学 | Detonating circuit combining electronic detonator and detonating cord and construction method thereof |
| CN112197657B (en) * | 2020-08-28 | 2021-09-21 | 河南理工大学 | Deep-thickness punching layer large-diameter vertical shaft frozen soil blasting construction method |
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