Water stemming containing foaming agent

Abstract

The invention discloses water stemming which enables mining blasting to be safer. The water stemming comprises an outer packaging film (1) and liquid (2) which is sealed in the outer packaging film (1); the liquid (2) is an aqueous solution; and the aqueous solution contains 0.2 percent to 0.7 percent of foaming agent by the weight. The aqueous solution also contains 0.5 percent to 5 percent of sodium bicarbonate by the weight. The liquid in traditional water stemming is water, so that the effects of cooling, reducing dust, damping flame and reducing accident occurring rate are quite poor. According to the water stemming containing the foaming agent, the foaming agent or the sodium bicarbonate is additionally arranged in the water, so that the accident occurring rate can be reduced, the cooling, dust reducing and flame damping effects of the water stemming are better, and good popularization and application value as well as large-scale production are realized.

Description

technical field [0001] The invention belongs to the technical field of mining blasting, and in particular relates to a water blasting mortar which can make mining blasting safer. Background technique [0002] At present, the output of coal blast mining accounts for a high proportion of the national coal output, especially in some southern areas with poor geological conditions and small coal mines, blast mining coal mining is still an important coal mining method. [0003] Due to the unevenness of blasting technology, the proportion of blasting accidents and gas and coal dust explosion accidents caused by blasting is still high, which is one of the main factors causing major safety accidents in coal mines. Among them, the accidents caused by poor blast hole plugging accounted for more than 25%. Therefore, it is an important means to solve blasting accidents to study reasonable plugging methods and use new water taphole mud to replace traditional water taphole mud. [0004] I...

AI Technical Summary

Problems solved by technology

When using traditional water blasting mud to seal the blast hole, because the traditional water blasting mud only contains a certain amount of water, it only has a certain effect of cooling and dust reduction

And because the strength and density of the packaging film used in traditional water blasting mud are small, the strength is low, and the elongation is high, the above-mentioned is easy to deform and seep water, and after deformation, it cannot fully contact with the blasthole wall, and it cannot achieve good plugging. function and improve the effect of blasting coal drop, and more importantly, it basically cannot play the role of flame suppression in coal mine blasting operations

In the underground blasting operation, although each blast hole is well sealed, the blasting point of the blast hole is still quite weak at the moment of blasting, especially the charge blast hole with positive detonation. The shock wave and high-temperature and high-pressure detonation products will first rush out along the blast hole, causing an accident

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