A modular reel-type uncoupled blasting charge device and method

Abstract

The invention provides a modular drum type uncoupled blasting charge device. The modular drum type uncoupled blasting charge device comprises a guide device at the bottom. A charge cylinder is connected to the guide device. A string is fixed on the lateral side of the charge cylinder. one end of the string is connected to the guide device, and the other end of the string extends out of the chargecylinder. Explosive and a foam column are arranged in the charge cylinder. The foam column is used for filling the part without the explosive, and the cross section diameter of the foam column is thesame as the inner diameter of the charge cylinder. The charge cylinder is formed by rolling up flexible plates and fixedly connecting the flexible plates, and the outer sides of the rolled flexible plates are sleeved with a plurality of tie belts. According to the modular drum type uncoupled blasting charge device, by adopting the method of rolling the flexible plates into the charge cylinder, a detonating cord is in tight contact with the explosive cartridge, so that the generation of blind cannons is avoided. The device is low in cost and easy and convenient to operate and can be independently completed by one person, the source of materials is wide, and the labor cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of blasting engineering with uncoupled charges, and in particular relates to a modular reel type uncoupled blasting charge device and method. Background technique [0002] The national infrastructure investment has never been reduced, and a large number of railways, highways, open-pit mines, large hydropower stations, and underground projects with various functions have been constructed one after another. These projects need to form a flat contour surface during the blasting and excavation process, such as: railways, High and steep slopes of highways, open-pit mines, large-scale hydropower stations, and flat rock walls of underground projects. Some projects require a large amount of stone blasting and excavation. The explosives required at a time range from several tons to dozens of tons, or even hundreds of tons. Large-scale blasting excavation will also cause damage to the rock mass to be retained behind t...

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Problems solved by technology

[0004] The traditional two uncoupled charging methods have some shortcomings in the implementation process. For example, the first method is limited by the type of explosive and the type of hard plastic tube, which restricts the determination of the uncoupling coefficient by blasting designers. During the explosive process, the detonating cord and the explosive charge roll cannot be well fitted, so that the explosion cannot be transmitted well, which affects the effect of uncoupled blasting; the second method requires multiple people to operate, and sometimes improper operation will also cause blast rejection. The phenomenon

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