CN115355783B - Tunnel tunneling delay detonating circuit with digital electronic detonator and detonating cord fused - Google Patents
Tunnel tunneling delay detonating circuit with digital electronic detonator and detonating cord fused Download PDFInfo
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- CN115355783B CN115355783B CN202211148106.7A CN202211148106A CN115355783B CN 115355783 B CN115355783 B CN 115355783B CN 202211148106 A CN202211148106 A CN 202211148106A CN 115355783 B CN115355783 B CN 115355783B
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- 230000005641 tunneling Effects 0.000 title claims abstract description 17
- 230000000977 initiatory effect Effects 0.000 claims abstract description 7
- 238000005422 blasting Methods 0.000 claims description 21
- 238000005474 detonation Methods 0.000 claims description 15
- 239000002360 explosive Substances 0.000 claims description 12
- 230000006855 networking Effects 0.000 claims description 7
- 230000003111 delayed effect Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 description 10
- 238000013461 design Methods 0.000 description 8
- 230000037452 priming Effects 0.000 description 5
- 239000011435 rock Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000004927 fusion Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- 206010013954 Dysphoria Diseases 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 238000012946 outsourcing Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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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
- 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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- 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
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- 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
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- 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 discloses a tunnel tunneling delay initiation circuit with a digital electronic detonator and a detonating cord fused. The center of the section of the roadway is provided with a hollow hole (4), the outer side of the hollow hole (4) is provided with a hollow hole outer side cut hole (11), and the inner side of the hollow hole (4) is provided with a hollow hole inner side cut hole (12); auxiliary holes (10) are formed in the periphery of the cut holes (11); the top of the roadway is provided with a top plate hole (13), and the bottom and two sides of the roadway are provided with a bottom plate hole and a side wall hole (9); the hole bottom of the hollow hole inner side cut hole (12) is provided with a first group of digital electronic detonators (2), and the hole bottom of the hollow hole outer side cut hole (11) is provided with a second group of digital electronic detonators (3); the auxiliary hole (10), the bottom plate hole, the side wall hole (9) and the top plate hole (13) are internally provided with detonating cords (1); the detonating cord (1) is connected with a third group of digital electronic detonators (5). The invention has the advantages of ensuring safety, improving roadway forming quality, saving cost and reducing labor intensity.
Description
Technical Field
The invention belongs to the technical field of engineering blasting delay detonating circuits, and particularly relates to a tunneling delay detonating circuit with a digital electronic detonator and a detonating cord fused, which is applied to blasthole delay detonating in the 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 that underground mines comprehensively use common industrial detonators such as digital electronic detonators, non-electric detonators are not sold any more, and the like.
The mine tunnel tunneling blasting initiation circuit adopts a single digital electronic detonator delay initiation circuit, the digital electronic detonator is large in dosage and large in operation workload, the tunnel forming quality is obviously reduced, and the safety and the reliability are poor.
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 roadway 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 tunneling engineering of small-section and multi-hole number of the digital electronic detonator, blind blasting (explosion rejection) is multiple, and blind blasting treatment is always 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 is further reduced, the vibration and damage of the surrounding rock caused by tunneling construction are further increased, and the safety risk of underground operation and the accident hidden trouble of roof caving are further increased.
The production cost aspect is as follows: (1) The roadway forming quality is poor, the surrounding rock vibration is damaged greatly, and the supporting cost is obviously increased; (2) The roadway forming quality is poor, the overdreaping 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 roadway tunneling delay priming circuit with the digital electronic detonator and the detonating cord fused, which is convenient to operate, relatively safe in construction process, capable of guaranteeing the priming effect, improving the roadway forming quality and reducing the comprehensive cost.
The technical scheme of the invention is as follows: a tunnel tunneling delay detonating circuit with a digital electronic detonator and a detonating cord fused, wherein a hollow hole is arranged in the center of the section of the tunnel, a hollow hole outside cut hole is arranged at the outer side of the hollow hole, and a hollow hole inside cut hole is arranged at the inner side of the hollow hole; auxiliary holes are formed in the periphery of the cut hole at the outer side of the hollow hole; the top of the roadway is provided with a top plate hole, and the bottom and two sides of the roadway are provided with a bottom plate hole and a side wall hole; a first group of digital electronic detonators are placed in the bottom of the hollow hole with the inner side of the hollow hole, and a second group of digital electronic detonators are placed in the bottom of the hollow hole with the outer side of the hollow hole; the auxiliary hole, the bottom plate hole and the side wall hole are internally provided with detonating cords, and the top plate hole is used for binding explosive on the detonating cords and placing the explosive into the top plate hole according to the loading quantity and the loading structure designed by smooth blasting; and the 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 hole bottom detonation is realized by the hollow hole outside cut hole through the second group of digital electronic detonators, and the hole bottom detonation is realized by the hollow hole inside cut hole through the first 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 cut hole at the inner side of the hollow hole is delayed by the detonation time of the second group of digital electronic detonators in the cut hole at the outer side of the hollow 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 outer side cut hole of the hollow hole, the inner side cut hole of the hollow hole, the auxiliary hole, the top plate hole, the bottom plate hole and the side wall hole are respectively 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, 8 hollow hole outer side undercut holes are arranged, and adjacent blast holes are respectively detonated according to 1Ms and 2 Ms; the hollow hole inner side undercut hole is detonated according to 3Ms sections; the auxiliary holes are arranged outside the hollow hole outer side undercut holes, the auxiliary holes of the inner ring are respectively detonated according to 4Ms and 5Ms, the auxiliary holes of the outer ring are respectively detonated according to 6Ms and 7Ms with the bottom plate holes in the middle of the bottom plate holes and the side wall holes, and the bottom plate holes, the side wall holes and the top plate holes on two sides of the bottom plate holes and the side wall holes are detonated according to 8Ms and 9 Ms.
The detonation circuit adopts part of digital electronic detonators to directly detonate the explosive charges in the cut holes, part of the detonators to detonate the detonators in the auxiliary holes and the peripheral holes, and then the detonators in the detonators are fused time-delay detonation circuit, wherein the peripheral holes are bottom plate holes, side wall holes and top plate holes.
Under the precondition that parameters such as the number of 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 ensuring the cut effect are met.
According to the invention, detonating cords are placed in the auxiliary holes and the peripheral holes to serve as detonating sources for charging in the holes, and according to the designed delay section, a digital electronic detonator arranged in a certain section is adopted to detonate the detonating cords required by the same section, so that the charging in the holes is started, thereby achieving the purposes of reducing the number of the digital electronic detonators, reducing the use cost of the detonators, being convenient and efficient to operate, reducing the working time of operators in severe environments, improving the safety guarantee, and smoothly realizing smooth blasting by using detonating cords for detonating in roof holes to improve the roadway forming quality.
The hollow holes of the invention provide free surfaces and compensation space for the undercut holes.
The delayed sequence of the cut holes adopts 8 cut holes at the outer side of the detonating hollow hole, the interval is set to be 1Ms and 2Ms, then the cut holes at the inner side of the detonating hollow hole are set to be 3Ms, and the hole bottoms detonate, so that broken bodies in the cavity of the cut holes can be conveniently and smoothly thrown out, and the cut purpose is achieved.
The auxiliary holes and the peripheral holes are internally provided with the detonating cords, 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 arranged as the corresponding section.
According to the explosive loading quantity and the explosive loading structure designed by smooth blasting, explosive is bound on the detonating cord and is placed in the hole, then the detonating cord of the same section is firmly bound together outside the hole according to the number of the same section holes and the time delay requirement, and then the digital electronic detonator arranged as the section is used for detonating.
The scanning code-combining detonator is used for scanning code identification, detection, delay time setting, networking and detonating after entering a detonating code for all detonators in an detonating circuit through a networking main line, a digital electronic detonator wiring card and a detonator foot line.
The beneficial technical effects of the invention are as follows: the usage amount of the digital electronic detonator is greatly reduced. According to the design of a roadway with the same section size and the same hole site, the primary single digital electronic detonator priming circuit needs 51 digital electronic detonators; by adopting the fusion initiation circuit, only 16 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 used for each tunneling cycle, and the cost is saved by 665 yuan.
The blasting cap detonating device has the advantages that the blasting cap detonating is used for detonating the top plate hole, so that smooth blasting can be smoothly realized to improve the roadway forming quality of the roadway, and the purposes of reducing the disturbance damage degree of blasting to surrounding rock of the roadway 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.
The invention has the advantages of ensuring safe production, improving roadway forming quality, saving production cost and reducing 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 the class of tunnelling blastholes.
FIG. 3 is a schematic diagram of the arrangement of the delay detonation sections of the tunneling blast holes.
1-detonating cord; 2-a first group of digital electronic detonators; 3-a second group of digital electronic detonators; 4-hollow holes; 5-a third group of digital electronic detonators; 6-a digital electronic detonator wiring card; 7-networking main line; 8-scanning a code-group net exploder; 9-floor holes and highwall holes; 10-auxiliary holes; 11-cutting the outside of the hollow hole; 12-cutting holes in the inner side of the hollow hole; 13-roof 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 tunnel tunneling delay initiation circuit with a digital electronic detonator and a detonating cord fused is provided, a hollow hole 4 is arranged in the center of the section of a tunnel, a hollow hole outer side cut hole 11 is arranged at the outer side of the hollow hole 4, and a hollow hole inner side cut hole 12 is arranged at the inner side of the hollow hole 4; auxiliary holes 10 are arranged on the periphery of the hollow hole inner side cut holes 12; the top of the roadway is provided with a top plate hole 13, and the bottom and two sides of the roadway are provided with a bottom plate hole and a side wall hole 9; a first group of digital electronic detonators 2 are placed in the bottoms of the hollow hole inner side cut holes 12, and a second group of digital electronic detonators 3 are placed in the bottoms of the hollow hole outer side cut holes 11; the auxiliary hole 10, the bottom plate hole and the side wall hole 9 are internally provided with the detonating cord 1, and the top plate hole 13 is used for binding explosive on the detonating cord 1 and arranging the explosive into the top plate hole 13 according to the loading quantity and the loading structure designed by smooth blasting; the detonating cord 1 is connected with a third group of digital electronic detonators 5.
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 5 are connected with digital electronic detonator wiring cards 6, and the digital electronic detonator wiring cards 6 are connected with a scanning code group network blaster 8 through a networking main wire 7; the scanning code-combining detonator 8 is used for scanning code recognition, detection, delay time setting and networking of all detonators in the detonating circuit through the networking main wire 7, the digital electronic detonator wiring card 6 and the detonator leg wires, and detonating after the detonating password is input.
The hollow hole outer side cut hole 11 realizes hole bottom detonation through the second group of digital electronic detonators 3, and the hollow hole inner side cut hole 12 realizes hole bottom detonation through the first group of digital electronic detonators 2; used for guaranteeing the blasting effect of the cut hole.
The inner side of the hollow hole is cut into the hole 12, and the outer side of the hollow hole is cut into the hole 11 at a certain interval to detonate, so that the broken body in the cavity can be conveniently and smoothly thrown out, and the purpose of cutting is achieved.
The roof hole 13 realizes smooth blasting through the detonating cord 1 to improve the roadway forming quality, thereby achieving the purposes of reducing the disturbance damage degree of blasting to roadway surrounding rock and controlling the roof caving safety risk.
As shown in fig. 3, the blast holes of the outer side cut hole 11, the inner side cut hole 12, the auxiliary hole 10, the top plate hole 13, the bottom plate hole and the side wall hole 9 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.
8 hollow hole outer side cut holes 11 are arranged, and adjacent blast holes are detonated according to 1Ms and 2Ms respectively; the hollow hole inner side cut hole 12 is detonated according to 3Ms sections; the auxiliary holes 10 are arranged outside the hollow hole outer side undercut holes 11, the auxiliary holes 10 of the inner ring are respectively detonated according to the sections of 4Ms and 5Ms, the auxiliary holes 10 of the outer ring are respectively detonated with the bottom plate holes in the middle of the bottom plate holes and the side wall holes 9 according to the sections of 6Ms and 7Ms, and the bottom plate holes, the side wall holes and the top plate holes 13 on the two sides of the bottom plate holes and the side wall holes 9 are respectively detonated according to the sections of 8Ms and 9 Ms.
The invention has the outstanding advantage of greatly reducing the usage amount of the digital electronic detonator. According to the design of the roadway with the same section size and the same hole site, the primary single digital electronic detonator priming circuit needs 51 digital electronic detonators. By adopting the fusion initiation circuit, only 16 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 used for each tunneling cycle, and the cost is saved by 665 yuan.
The blasting cap detonating device has the advantages that the blasting cap detonating is used for detonating the top plate hole, so that smooth blasting can be smoothly realized to improve the roadway forming quality of the roadway, and the purposes of reducing the disturbance damage degree of blasting to surrounding rock of the roadway 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 roadway forming quality, saving production cost and reducing 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. A tunnel tunneling delay detonating circuit integrating a digital electronic detonator and a detonating cord is characterized in that a hollow hole (4) is formed in the center of a tunnel section, a hollow hole outer side cut hole (11) is formed in the outer side of the hollow hole (4), and a hollow hole inner side cut hole (12) is formed in the inner side of the hollow hole (4); auxiliary holes (10) are formed in the periphery of the hollow hole outer side cut holes (11); the top of the roadway is provided with a top plate hole (13), and the bottom and two sides of the roadway are provided with a bottom plate hole and a side wall hole (9); a first group of digital electronic detonators (2) are placed in the hole bottoms of the hollow hole inner side cut holes (12), and a second group of digital electronic detonators (3) are placed in the hole bottoms of the hollow hole outer side cut holes (11); the auxiliary hole (10), the bottom plate hole and the side wall hole (9) are internally provided with the detonating cord (1), and the top plate hole (13) is used for binding explosive on the detonating cord (1) and placing the explosive into the top plate hole (13) according to the loading quantity and the loading structure designed by smooth blasting; the detonating cord (1) is connected with a third group of digital electronic detonators (5);
the hollow hole outer side cut hole (11) realizes hole bottom detonation through the second group of digital electronic detonators (3), and the hollow hole inner side cut hole (12) realizes hole bottom detonation through the first group of digital electronic detonators (2);
the detonation time of the first group of digital electronic detonators (2) in the hollow hole inner side cut hole (12) is delayed to the detonation time of the second group of digital electronic detonators (3) in the hollow hole outer side cut hole (11);
the blast holes of the outer side of the hollow hole are respectively detonated, and the blast holes of the outer side of the hollow hole are respectively detonated, the inner side of the hollow hole is a cut hole (11), the outer side of the hollow hole is a cut hole (12), the auxiliary hole (10), the top plate hole (13), the bottom plate hole and the side wall hole (9) are detonated; 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 time delay interval value between each two adjacent sections is 250 ms-750 ms;
8 hollow hole outer side undercut holes (11) are arranged, and adjacent blast holes are respectively detonated according to 1Ms and 2 Ms; the hollow hole inner side cut hole (12) is detonated according to 3Ms sections; the auxiliary holes (10) are arranged outside the hollow hole outside the cut hole (11) for two circles, the auxiliary holes (10) of the inner ring are respectively detonated according to the sections of 4Ms and 5Ms, the auxiliary holes (10) of the outer ring are respectively detonated with the bottom plate holes in the middle of the bottom plate holes and the side wall holes (9) according to the sections of 6Ms and 7Ms, and the bottom plate holes, the side wall holes and the top plate holes (13) on two sides of the bottom plate holes and the side wall holes (9) are respectively detonated according to the sections of 8Ms and 9 Ms.
2. The roadway tunneling delay initiation 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 (5) are connected with digital electronic detonator wiring cards (6), and the digital electronic detonator wiring cards (6) are connected with a scanning-code-group-net-detonator (8) through networking main wires (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211148106.7A CN115355783B (en) | 2022-09-21 | 2022-09-21 | Tunnel tunneling delay detonating circuit with digital electronic detonator and detonating cord fused |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211148106.7A CN115355783B (en) | 2022-09-21 | 2022-09-21 | Tunnel tunneling delay detonating circuit with digital electronic detonator and detonating cord fused |
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| Publication Number | Publication Date |
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| CN115355783A CN115355783A (en) | 2022-11-18 |
| CN115355783B true CN115355783B (en) | 2023-06-20 |
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| CN202211148106.7A Active CN115355783B (en) | 2022-09-21 | 2022-09-21 | Tunnel tunneling delay detonating circuit with digital electronic detonator and detonating cord fused |
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Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102878876B (en) * | 2012-10-08 | 2014-08-27 | 江西稀有稀土金属钨业集团有限公司 | Mine roadway advancing and undermining method and main blasting parameters |
| CN106610253B (en) * | 2016-12-08 | 2017-12-22 | 娄文忠 | A kind of electric detonator detonation system and its control method by repeater communication |
| CN110388856B (en) * | 2019-08-29 | 2021-07-06 | 昆明理工大学 | Smooth blasting method for tunneling |
| CN111795623A (en) * | 2020-06-24 | 2020-10-20 | 河南发恩德矿业有限公司 | Low-cost high-reliability serial detonation method for digital detonator and detonating cord |
| 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 |
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