CN218764917U

CN218764917U - Blasting charge connection system capable of greatly reducing consumption of digital electronic detonators

Info

Publication number: CN218764917U
Application number: CN202222836320.3U
Authority: CN
Inventors: 陈兴; 侯大德; 尹裕; 潘健; 郭振鹏; 王凯旋
Original assignee: Huawei National Engineering Research Center of High Efficient Cyclic and Utilization of Metallic Mineral Resources Co Ltd; Sinosteel Maanshan General Institute of Mining Research Co Ltd
Current assignee: Huawei National Engineering Research Center of High Efficient Cyclic and Utilization of Metallic Mineral Resources Co Ltd; Sinosteel Maanshan General Institute of Mining Research Co Ltd
Priority date: 2022-10-27
Filing date: 2022-10-27
Publication date: 2023-03-28
Anticipated expiration: 2032-10-27

Abstract

The utility model discloses a can reduce blasting powder charge connected system of digital electronic detonator quantity by a wide margin, lateral part in big gun hole (9) is equipped with downthehole detonating cord, from inside to outside in the big gun hole in order pack into explosive, stemming, and the downthehole detonating cord of same section is connected with a conduction detonating cord outside the big gun hole, and the outer tip of conduction detonating cord inserts digital electronic detonator, and digital electronic detonator's detonator foot line inserts total detonating cord, and total detonating cord is connected with special primer. The utility model discloses no longer adopt the detonator to explode in every big gun hole, but change the downthehole detonating cord detonating into, the downthehole detonating cord of the same section is connected with a conduction detonating cord outside the big gun hole, and digital electronic detonator is inserted to the outer tip of conduction detonating cord for originally every big gun hole needs 1 detonator to become numerous big gun holes of the same section only need 1 detonator, the digital electronic detonator's that has significantly reduced use amount.

Description

Blasting charge connection system capable of greatly reducing consumption of digital electronic detonators

Technical Field

The utility model belongs to the technical field of the blasting, concretely relates to can reduce blasting powder charge connected system of digital electronic detonator quantity by a wide margin, use under the more condition of be particularly suitable for roadway engineering or tunnel tunnelling engineering big gun hole quantity.

Background

In many fields of industrial activities, particularly in the construction of mines, traffic, ports and other projects, blasting is required when excavation of earth and stone is involved. As the explosive must be detonated by a detonator or detonating cord to be detonated, all the time, each blast hole is detonated by a detonator except for empty holes without charges. The initial blasting in China mainly adopts fire detonators, and then the blasting is slowly popularized to non-electric detonator detonators and electric detonators. The fire detonator is easy to generate a public security case particularly after being lost due to poor safety, and the currently used non-electric detonator and electric detonator are mainly used. Although the safety of the non-electric detonator and the electric detonator is better than that of the fire detonator, in case of loss, a lawless person can still detonate through the initiator, so that the uncertainty influence is brought to public safety. In order to fundamentally achieve intrinsic safety, even if the detonator is lost, lawless persons cannot use the detonator, and China is gradually popularized to use the digital electronic detonator.

The digital electronic detonator combines a common instantaneous electric detonator with an electronic control circuit, integrates password control, accurate time delay and special initiation into a whole. Only if the code is used in an approved geographical range and the three codes (blasting person, detonator and detonator codes) are corresponding to be detonated. Once the dangerous goods are lost or stolen, the detonator can not be detonated as long as the detonator is not in an approved range or any password is lost, and the detonator can not be detonated by the traditional detonator and a 220V power supply, so that the possibility that the civil explosive goods are utilized by lawbreakers to harm the society can be reduced to the maximum extent, and the safety level of the circulation and use links of the dangerous goods is greatly improved.

The digital electronic detonator has the advantages, but the greatest defect is that the price is too high, which is more than ten times of that of the ordinary detonator, so that high cost burden is brought to the society and the use units, and great difficulty is brought to the popularization and the use of the digital electronic detonator.

Disclosure of Invention

The utility model aims at providing a blasting powder charge connected system that can reduce digital electronic detonator quantity by a wide margin is provided to the problem that the cost that causes greatly behind the adoption digital electronic detonator greatly to traditional roadway, tunnel tunnelling blasting.

For realizing the above purpose of the utility model, the utility model relates to a can reduce blasting powder charge connected system of digital electronic detonator quantity by a wide margin adopts following technical scheme:

the conventional arrangement of the blast holes is to install a detonator at the bottom of each blast hole. The utility model relates to a can reduce blasting powder charge connected system of digital electronic detonator quantity by a wide margin, lateral part in the big gun hole is equipped with downthehole detonating fuse, and its characteristics are: the explosive and the stemming are sequentially filled in the blast hole from inside to outside, the detonating cord in the same section of hole is connected with a conductive detonating cord outside the blast hole, the outer end part of the conductive detonating cord is connected with the digital electronic detonator, the detonator foot wire of the digital electronic detonator is connected with the general detonating cord, and the general detonating cord is connected with the special detonator.

In order to realize the best blasting effect, reduce the charging cost and improve the blasting safety, the height of the explosive filled in the blast hole is 2/3-4/5 of the depth of the blast hole, and the height of the blocking stemming is 1/3-1/5 of the depth of the blast hole.

Generally, the number of the sections of the blast holes is 3-8, the number of the digital electronic detonators and the number of the conduction detonating cords are equal to the number of the sections of the blast holes, namely, only 1 digital electronic detonator and 1 conduction detonating cord are required to be arranged in each section of the blast hole.

The utility model relates to a can reduce blasting powder charge connected system of digital electronic detonator quantity by a wide margin and adopt above technical scheme after, have following beneficial effect:

(1) Each blast hole is not detonated by a detonator, but is detonated by an in-hole detonating cord, the in-hole detonating cord in the same section is connected with a conductive detonating cord outside the blast hole, and the outer end part of the conductive detonating cord is connected with a digital electronic detonator, so that 1 detonator is required for each blast hole and only 1 detonator is required for a plurality of blast holes in the same section. According to the general roadway tunneling 30 blast holes, the calculation is divided into 5 sections, the usage amount of the detonator can be reduced from 30 to 5, the blasting cost is greatly reduced, and the more the blast holes are on the working face, the greater the cost reduction is.

(2) Has wide application range. The utility model discloses blasting powder charge connected system is applicable to other all kinds of blasting such as mining blasting, control blasting except being applicable to roadway or tunnel boring.

(3) The use is flexible. In actual use, when the blast holes at the same section are close to each other, the in-hole detonating cords and the electronic digital detonators in the blast holes can be directly bound together without conducting the detonating cords; when the blast holes in the same section are more and far away, the connection can be carried out by adopting a method of conducting branch relay of the detonating fuse.

Drawings

Figure 1 is the utility model relates to a can reduce blasting powder charge connected system schematic diagram of digital electronic detonator quantity by a wide margin.

The reference signs are: 1-detonating cord in the hole; 2-an explosive; 3-stemming; 4-a conductive detonating cord; 5-digital electronic detonators; 6-detonator leg wire; 7-a general detonating cord and 8-a special detonator; and 9-blast hole.

Detailed Description

For further description, the present invention will be described in detail with reference to the accompanying drawings and examples, wherein the blasting charge connection system can substantially reduce the amount of the digital electronic detonators.

Taking a certain mine roadway tunneling project as an example. By figure 1 the utility model relates to a can reduce blasting powder charge connected system schematic diagram of digital electronic detonator quantity by a wide margin and see out, the utility model relates to a can reduce blasting powder charge connected system of digital electronic detonator quantity by a wide margin, the number of segments of big gun hole 9 is 5 sections, and 7 big gun holes are laid to every section, 35 big gun holes altogether. An in-hole detonating cord 1 is arranged on the side part in the blast hole 9, explosives 2 and stemming 3 are sequentially loaded in the blast hole 9 from inside to outside, the height of the explosives 2 loaded in the blast hole 9 is 2/3-4/5 of the depth of the blast hole 9, and the height of the plugged stemming 3 is 1/3-1/5 of the depth of the blast hole 9. The detonating cord 1 in the same section is connected with a conductive detonating cord 4 outside a blast hole 9, the outer end part of the conductive detonating cord 4 is connected with a digital electronic detonator 5, the detonator leg wire 6 of each digital electronic detonator 5 is connected with a general detonating cord 7, the general detonating cord 7 is connected with a special detonator 8, and the detonation is carried out remotely through the special detonator 8. Before blasting, according to the requirements of mine roadway driving engineering and the characteristics of mine roadway lithology, the related technical parameters of each digital electronic detonator 5 are regulated and controlled, so that the detonation time of blast holes 9 of adjacent sections is set between 10 ms and 15 ms.

Claims

1. The utility model provides a blasting powder charge connected system that can reduce digital electronic detonator quantity by a wide margin, the lateral part in big gun hole (9) is equipped with downthehole detonating fuse (1), its characterized in that: the explosive (2) and the stemming (3) are sequentially filled in the blast hole (9) from inside to outside, the detonating cord (1) in the hole at the same section is connected with a conductive detonating cord (4) outside the blast hole (9), the outer end part of the conductive detonating cord (4) is connected with a digital electronic detonator (5), the detonator foot line (6) of the digital electronic detonator (5) is connected with a general detonating cord (7), and the general detonating cord (7) is connected with a special detonator (8).

2. A blasting charge connection system capable of substantially reducing the amount of digital electronic detonators used, as claimed in claim 1, wherein: the height of the explosive (2) filled in the blast hole (9) is 2/3-4/5 of the depth of the blast hole (9), and the height of the plugged stemming (3) is 1/3-1/5 of the depth of the blast hole (9).

3. A blasting charge connection system capable of substantially reducing the amount of digital electronic detonators used according to claim 1 or claim 2, wherein: the number of the sections of the blast holes (9) is 3-8, and the number of the digital electronic detonators (5) and the number of the conductive detonating cords (4) are equal to the number of the sections of the blast holes (9).