CN217330913U

CN217330913U - Electronic detonator network for tunnel foundation pit excavation

Info

Publication number: CN217330913U
Application number: CN202220978275.2U
Authority: CN
Inventors: 周光辉; 华富春; 钟志明; 林朝键; 陈志斌
Original assignee: Fujian Civilian Blasting Chemical Co ltd
Current assignee: Fujian Civilian Blasting Chemical Co ltd
Priority date: 2022-04-26
Filing date: 2022-04-26
Publication date: 2022-08-30
Anticipated expiration: 2032-04-26

Abstract

The utility model discloses an electron detonator network for tunnel foundation ditch excavation belongs to the civilian and explodes the chemical industry field, solves traditional electron detonator connection network problem with high costs, that reject to explode, the reliability is low. The utility model relates to an electron detonator network for tunnel foundation ditch excavation includes blasting generating line, ply-yarn drill, foot line, electron detonator, explosive, the electron detonator loops through foot line, ply-yarn drill and is connected with the blasting generating line, and the same explosive of blasting delay time links together through a branch of detonating cord, detonating cord bundling end binds an electron detonator, and an explosive is connected to the other end.

Description

Electronic detonator network for tunnel foundation pit excavation

Technical Field

The utility model relates to an engineering blasting technical field is a be applied to tunnel, the little section engineering blasting initiation electron detonator connecting network of foundation ditch.

Background

The electronic detonator adopts a built-in electronic control module to control the detonation process and energy. The electronic detonator has the characteristics of single shot and detonation network detection, high delay precision, supervision of the whole life cycle and the like, is a direction for realizing high-quality development of the civil explosive production industry, and is widely applied to the current blasting engineering construction.

However, in the application of the electronic detonator in small-section blasting, because the hole spacing is small and the rock and ore are compact, the shock wave generated after the explosive is exploded can cause overload impact on the electronic detonator, so that the internal components of the electronic detonator are damaged to different degrees due to the overload impact, the traditional electronic detonator connecting network is shown in figure 1, the electronic detonator 4 is connected with the blasting bus 1 sequentially through a leg wire 3 and a line card 2, each foundation pit needs one detonator, and more detonators need to be consumed; in addition, electromagnetic pulses generated in explosion can interfere with chips in the detonators and also influence the normal work of the electronic detonators, so that part of the electronic detonators with high-delay detonation in an explosion network consisting of multiple electronic detonators cannot be detonated, construction safety is not facilitated, and construction progress is influenced; in addition, because all electronic detonators are connected with the blasting bus, the detonators which are detonated first can pull the blasting bus, so that the position of the detonators which are detonated subsequently with high delay is moved, the blasting effect is influenced, even the detonators and the explosive are disconnected seriously, and the condition that the detonators are detonated and the explosive is not detonated occurs.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the above-mentioned current technical problem, provide an electronic detonator blasting construction initiation network of being applied to tunnel, foundation ditch excavation arranges, connection technology, has solved three big problems: firstly, the problems that a large number of detonators are required to be consumed in the blasting process and the cost is high are solved; secondly, the problem that the delayed detonation electronic detonator is interfered by shock waves generated after the explosion of the explosive and electromagnetic pulses generated in the explosion to cause explosion rejection because the distance between blast holes is small in the blasting construction of the electronic detonator is solved; and thirdly, the problem that the blasting bus is pulled to cause detonation of the detonator and the explosive fails to detonate is solved.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

an electronic detonator network for tunnel foundation pit excavation comprises a blasting bus, a line card, a leg wire, an electronic detonator and explosive, wherein the electronic detonator is connected with the blasting bus sequentially through the leg wire and the line card, the explosives with the same blasting delay time are connected together through a detonating cord bundle, one electronic detonator is bound at the bundling end of the detonating cord bundle, and the other explosive is connected with the other explosive.

After the network connection is adopted, only one detonator is needed for blasting the explosives with the same delay time, so that the using amount of the detonator is saved, and the cost is saved (the cost of the detonating fuse is far lower than that of an electronic detonator). Meanwhile, the detonator distribution is sparse due to the fact that the using amount of the detonator is reduced on the same cross section, the problem that the electronic detonator which is subjected to delayed detonation is interfered by shock waves generated after the detonator explodes and electromagnetic pulses generated in the explosion to cause explosion rejection due to the fact that the distance between blast holes is small in blasting construction of the electronic detonator is solved, and the problem that the detonator is detonated and the detonator is detonated due to the fact that a blasting bus is pulled is also solved.

Drawings

FIG. 1 is a schematic diagram of a conventional electronic detonator connection network;

FIG. 2 is a schematic diagram of the electronic detonator network connection for excavation of a tunnel foundation pit of the present invention;

FIG. 3 is a schematic diagram of an embodiment of the present invention;

fig. 4 is a schematic diagram of the connection between the electronic detonator and the explosive of the explosive with the same blasting delay time of the utility model.

The symbols in the figure represent:

1. blasting bus 2, line card 3, leg wire 4, electronic detonator 5, detonating cord 6, explosive 7 and stuffing

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

As shown in fig. 2 and 3, the electronic detonator network connection schematic diagram for tunnel foundation pit excavation is shown in the following table:

TABLE 1 delay time for each well

As shown in fig. 2 and 3, the electronic detonator network for tunnel foundation pit excavation comprises a blasting bus 1, a line card 2, a leg wire 3, an electronic detonator 4 and explosives 6, wherein the electronic detonator 2 is connected with the blasting bus 1 sequentially through the leg wire 3 and the line card 2, as shown in fig. 4, the explosives 6 with the same blasting delay time are connected together through a bundle of detonating cords 5, one electronic detonator 4 is bound at the bundling end of each detonating cord 5, the other end of each detonating cord is connected with one explosive 6, and the outside of the explosives 6 is filled with 7.

Through the utility model discloses the network connection sets up the delay time according to table 1, each hole that the delay time is the same explodes in proper order, the detonator has been saved than traditional electron detonator network, thereby practice thrift the cost, and simultaneously, the detonator distributes sparsely relatively, it is little because of big gun hole interval to have avoided electron detonator in blasting construction, the electron detonator of time delay detonating receives the shock wave that produces behind the explosive explosion and the electromagnetic pulse interference that produces in the explosion leads to the problem of refusing to explode, the blasting generating line has also been solved and has been dragged the detonator and explode and the problem of refusing to explode.

Claims

1. The utility model provides an electron detonator network for tunnel foundation ditch excavation, includes blasting generating line (1), ply-yarn drill (2), foot line (3), electron detonator (4), explosive (6), electron detonator (4) loop through foot line (3), ply-yarn drill (2) and is connected with blasting generating line (1), its characterized in that, and blasting delay time the same explosive (6) link together through a bundle of detonating cord (5), detonating cord (5) beam forming end is bound an electron detonator (4), and explosive (6) are located to the other end connection.