Intrinsically safe type quick explosive loading device for deep hole blasting

Abstract

An intrinsically safe type quick explosive loading device for deep hole blasting mainly includes: a guiding head positioned on a front end of the device, wherein lots of coal and rock chippings and fragments exist in a constructed drill hole usually, and the conical guiding head can effectively prevent accumulation of the coal and rock chippings and fragments due to explosive loading, and can reduce the explosive loading resistance so as to smoothly complete explosive loading; a tail plug positioned on the tail of the device which can effectively weaken impact on a cartridge during hole sealing, and can prevent explosive overflowing due to the broken cartridge; pipes, wherein the explosive loading demands of blast holes with different lengths or diameters can be met by increasing the number of PVC pipes and changing the diameter of the PVC pipes, and the pipes has high adaptability to change in the length and the diameter of the blast holes; and a safe rope which can quickly pull the cartridge out in a case of blocking of the blast holes, a broken blasting line, or a broken detonating fuse, can prevent the cartridge from being left in the blast holes, and can effectively improve the anti-disaster ability during explosive loading. The intrinsically safe type quick explosive loading device is simple in process, is easy to operate, and is safe and reliable.

Description

technical field [0001] The invention relates to an engineering blasting field, in particular to an intrinsically safe rapid charge device for deep hole blasting. Background technique [0002] In the process of mine mining, gas exceeding the limit in high-gas and low-permeability coal seams and the problem of large-area suspended roofs in the goaf of the mining face are two key factors restricting the safe production of coal mines. One of the main measures to weaken the hard roof. [0003] In general, advance pre-splitting blasting measures have the characteristics of large aperture, deep blast hole and large charge. During the construction of large-diameter deep blastholes, a certain amount of coal and rock debris or fragments are usually left behind. When charging, it is easy to cause the accumulation of debris or fragments to block the blasthole. Therefore, a reasonable charging method is to affect It is one of the key factors for the implementation effect and safety of ...

AI Technical Summary

Problems solved by technology

Practice has shown that when this method is used for charging, the end of the charge coil often pushes the remaining coal and rock debris or debris to accumulate and block the blast hole, which cannot meet the charge requirements; at the same time, once the charge occurs such as jamming In the event of accidents such as tearing the blasting wire or the detonating cord, it is difficult to completely pull out the explosives that have been loaded into the blasthole, which will not only delay the construction period, increase unnecessary manpower, material resources and economic investment, but also seriously Threat to mine safety production

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