CN114111478B - A detonating network using electronic detonators and detonating cords and its construction method - Google Patents

Abstract

The invention discloses a detonation network using an electronic detonator and a detonating cord and a construction method thereof. The detonation network includes an electronic detonator, a detonating cord, and a buckle; the construction method includes: 1. According to the blast hole Hole network parameters are drilled on the tunnel face; ② Explosives and electronic detonators are installed in the bottom plate holes, and explosives and detonating cords are installed in other blast holes; ③ According to the detonation network, detonators are installed in other blast holes that are detonated at the same time. The cables are connected with the main detonating cord; ④ Connect the explosive in the detonation hole to the electronic detonator that has been set with a delay; ⑤ Connect all electronic detonators in parallel to the main line; ⑥ After the detonation network is tested and the blasting warning is completed, Demolition crews detonate in a safe place. This detonation network can save a large number of electronic detonators, thereby reducing the cost of tunnel blasting. In addition, the detonation network is relatively simple, which can effectively reduce network connection time, facilitate on-site construction management, improve tunnel blasting and excavation progress, and has significant economic and social benefits.

Description

A detonating network using electronic detonators and detonating cords and its construction method

Technical field

The invention relates to the technical field of engineering blasting, and in particular to a detonation network using an electronic detonator and a detonating cord and a construction method thereof.

Background technique

The traceability of the use of electronic detonators and the realization of no-explosion management in time and space areas can enable the public security organs to change the management of civil explosive items from post-inspection to in-process management, which is conducive to the control of end safety risks of civil explosive items. Prevent detonators from being lost to society and used by criminals, causing major hidden dangers to public safety. In addition, the electronic detonator has strong anti-interference ability. It uses an electronic control module to set the delay and can modify the settings online. The online detection function can ensure reliable network connection and effectively solve the problem of lost guns. The precise delay can ensure the blasting plan. accurate implementation. Therefore, China has begun to vigorously promote the use of electronic detonators and gradually phase out other types of detonators.

Tunnel blasting generally uses small-diameter blastholes, and the number of blastholes on the tunnel face is as high as hundreds. Due to the high price of electronic detonators, the cost of tunnel blasting has increased sharply. In addition, the detonation network for tunnel blasting is relatively complex, requiring on-site personnel to have high operational skills, which is not conducive to on-site construction management. Moreover, the delay of setting up hundreds of electronic detonators on site takes time, seriously affecting the progress of tunnel excavation.

Contents of the invention

The purpose of the present invention is to overcome the shortcomings of the prior art and provide a detonation network using electronic detonators and detonating cords and a construction method thereof. This method avoids the use of a large number of electronic detonators, thereby reducing the cost of tunnel blasting. In addition, the detonation network is relatively simple, which can effectively reduce network connection time, facilitate on-site construction management, and improve tunnel blasting and excavation progress.

The technical solution of the present invention to solve the above technical problems is:

A detonation network construction method using electronic detonators and detonating cords, characterized in that: the method includes: ① drilling holes on the tunnel face according to the hole network parameters of the blast holes; ② loading explosives and Electronic detonators, install explosives and detonating cords in other blastholes; ③ Connect the detonating cords in other blastholes that are detonated simultaneously according to the detonation network with the main detonating cord; ④ Select among other blastholes that are detonated at the same time One blast hole is used as the detonation blast hole, and the explosive in the detonation blast hole is connected to the electronic detonator that has been set for delay; ⑤ Connect all electronic detonators in parallel to the main line; ⑥ After the detonation network is tested and the blasting warning is completed, Demolition crews detonate in a safe place;

The detonation network includes electronic detonators, detonating cords, and buckles;

The hole network parameters of the blast holes and the detonation network need to ensure that the distance between the main detonating cords is not less than 40cm;

The electronic detonator delay interval does not exceed 100ms.

A preferred solution of the present invention is characterized in that the buckle can be a plastic tube with a length of not less than 15cm, used for the connection between the detonating cord and the main detonating cord in the blast hole or the detonating cord and the detonator. connections between.

A preferred solution of the present invention is characterized in that the length of the contact between the detonating cord and the explosive in the blast hole is not less than 60cm.

A preferred solution of the present invention is characterized in that the electronic detonator can also be arranged at the end of the main detonating cord, but it needs to be protected.

A preferred solution of the present invention is characterized in that the delay of the electronic detonator in the bottom plate hole increases sequentially from the center to both sides, but must be greater than the delay of the corresponding cutout hole at the bottom of the upper hole.

A preferred solution of the present invention is characterized in that the connecting lines of the electronic detonator are laid along the contour line of the tunnel face to both sides of the arch feet.

The working principle of the detonating network construction method using electronic detonators and detonating cords in combination with the present invention is: connect the branch detonating cords in the blast holes that are simultaneously detonated with the main detonating cord, and then detonate them with an electronic detonator to achieve a large number of The purpose of reducing the number of electronic detonators is to eliminate the influence of the detonating cord through a series of technical measures, so that the detonation network using the electronic detonator and the detonating cord can reliably detonate and avoid blind shots.

Compared with the prior art, the present invention has the following beneficial effects:

1. The detonation network construction method using electronic detonators and detonating cords provided by the present invention avoids the use of a large number of electronic detonators, thereby reducing tunnel blasting costs.

2. The detonation network using electronic detonators and detonating cords provided by the present invention is relatively simple, can effectively reduce network connection time, is beneficial to on-site construction management, improves tunnel blasting and excavation progress, and has significant economic and social benefits.

Description of the drawings

Figure 1 is a schematic diagram of the specific implementation of the detonation network construction method using electronic detonators and detonating cords in combination with the present invention.

Figure 2 is a schematic diagram of a specific embodiment of the bottom plate hole charging structure of the present invention.

Figure 3 is a schematic diagram of a specific embodiment of the non-bottom hole charging structure of the present invention.

Figure 4 is a schematic diagram of a specific embodiment of the blast hole charging structure of the present invention.

Detailed ways

The present invention will be described in further detail below with reference to the examples and drawings, but the implementation of the present invention is not limited thereto.

Referring to Figures 1, 2, 3, and 4, the detonation network construction method of the present invention using electronic detonators and detonating cords is characterized in that: the method includes: ① According to the hole network parameters of the blast holes, construct the tunnel face 1 Drill holes on the top; ② Install explosive 3 and electronic detonator 4 in hole 2 of the bottom plate, and install explosive 3 and detonating cord 5 in other blast holes 9; ③ According to the detonation network, detonate the other blast holes 9 at the same time according to the detonation network Cord 5 is connected with the main detonating cord 6; ④ Select a blast hole among the other blast holes 9 that are detonated at the same time as the detonating blast hole 10, and connect the explosive 3 in the detonating blast hole 10 to the electronic detonator that has set the delay 4; ⑤ Connect all electronic detonators 4 in parallel to the main line 7; ⑥ After the detonation network test is passed and the blasting warning is completed, the blasters detonate in a safe place.

The detonation network includes an electronic detonator 4, a branch detonating cord 5, a main detonating cord 6, and a buckle 8.

The hole network parameters of the blasthole and the detonation network need to ensure that the distance between the main detonating cord 6 is not less than 40cm.

The delay interval of the electronic detonator 4 does not exceed 100ms.

Referring to Figure 3, the buckle 8 can be a plastic tube with a length of not less than 15cm, which is used to connect the detonating cord 5 and the main detonating cord 6 in the blast hole or between the main detonating cord 6 and the electronic detonator 4 Connection.

Referring to Figures 3 and 4, the length of the contact between the detonating cord 5 and the explosive 3 in the blast hole is not less than 60cm.

Referring to FIG. 4 , the electronic detonator 4 can also be disposed at the end of the main detonating cord 6 .

Referring to Figure 1, the delay of the electronic detonator 4 in the bottom plate hole 2 increases sequentially from the center to both sides, but must be greater than the delay of the corresponding cutout hole at the bottom of the hole above.

Referring to Figure 1, the connecting wire 7 of the electronic detonator 4 is laid along the contour line of the tunnel face 1 to both sides of the arch.

Referring to Figures 1, 2, 3, and 4, the working principle of the detonating network construction method of the present invention using an electronic detonator and a detonating cord is further described below in conjunction with the accompanying drawings: the detonating cord 5 in the blast hole will be detonated simultaneously. The main detonating cord 6 is connected, and then detonated by an electronic detonator 4 to achieve the purpose of greatly reducing the number of electronic detonators. Finally, a series of technical measures are used to eliminate the influence of the main detonating cord 6, so that the electronic detonator 4 and the main detonating cord 6 can be connected. The combined detonation network can detonate reliably and avoid blind gunfire.

The above are the preferred embodiments of the present invention, but the embodiments of the present invention are not limited by the above content. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principles of the present invention are all without limitation. All substitutions that should be equivalent are included in the protection scope of the present invention.

Claims (6)

1. A detonation network construction method using electronic detonators and detonating cords, characterized in that: the method includes: ① drilling holes on the tunnel face according to the hole network parameters of the blast holes; ② loading in the bottom plate hole Explosives and electronic detonators, and explosives and detonating cords are installed in other blast holes; ③ According to the detonation network, connect the branch detonating cords in other blast holes that are detonated at the same time with the main detonating cord; ④ In other blast holes that are detonated at the same time Select a blast hole as the detonation blast hole, and connect the explosive in the detonation blast hole to the electronic detonator that has been set for delay; ⑤ Connect all electronic detonators in parallel to the main line; ⑥ After the detonation network is tested and qualified, the blasting alert is completed Later, the blasters detonated in a safe place; The detonation network includes electronic detonators, detonating cords, and buckles; The hole network parameters of the blast holes and the detonation network need to ensure that the distance between the main detonating cords is not less than 40cm; The electronic detonator delay interval does not exceed 100ms. 2. The detonation network construction method using electronic detonators and detonating cords according to claim 1, characterized in that the buckle can be a plastic tube with a length of not less than 15cm, used for blasting holes. The connection between the detonating cord and the main detonating cord or the connection between the detonating cord and the detonator. 3. The detonation network construction method using electronic detonators and detonating cords according to claim 1, characterized in that the length of the contact between the detonating cord and the explosive in the blast hole is not less than 60cm. 4. The detonation network construction method using electronic detonators and detonating cords according to claim 1, characterized in that the electronic detonators can also be provided with the end of the main detonating cord, but they need to be protected. 5. The detonation network construction method using electronic detonators and detonating cords according to claim 1, characterized in that the delay time of the electronic detonators in the bottom plate hole increases sequentially from the center to both sides, but must be larger than the upper hole. The delay of the cut hole corresponding to the bottom. 6. The detonation network construction method using electronic detonators and detonating cords according to claim 1, characterized in that the connecting lines of the electronic detonators are laid along the contour line of the tunnel face to both sides of the arch feet.