On-site mixing method and car of ground and underground viscous porous granular ammonium nitrate fuel oil (ANFO) explosive

Abstract

The invention relates to an on-site mixing method and car of a ground and underground viscous porous granular ANFO explosive. A loading platform which is fixed on the ground is adopted, and porous granular ammonium nitrate, composite special oil, a setting agent and a thickener are transported into the loading platform fixed on the ground by manpower through a trolley and are respectively arranged in a porous granular ammonium nitrate storage tank, a composite special oil storage tank, a setting agent storage tank and a thickener storage tank on the on-site mixing car; after that, the on-site mixing car is driven to a blasting site, and viscous porous granular ANFO explosives can be obtained by mixing the porous granular ammonium nitrate, the composite special oil, the setting agent and the thickener; and therefore, the continuity and the automation of the preparation technology can be realized, the manufacturing process is safe and high in reliability, the explosive is good in viscidity, and a product is stable in quality and good in blasting effect. The on-site mixing method and car have the powder charge efficiency of more than 2t / h for a blast hole with phi 70mm, thus being suitable for the blast holes with more than phi 100mm of steps of a surface mine and suitable for powder charging, mining and blasting of an underground tunneling opposite hole and an underground inclined hole blast hole with phi 60-100mm.

Description

【Technical field】 [0001] The invention relates to an on-site mixing method for ground and underground viscous porous granular ammonium oil explosives. [0002] The invention relates to an on-site mixing vehicle for ground and underground viscous porous granular ammonium oil explosives. 【Background technique】 [0003] At present, the blasting of vertical holes and inclined holes in underground mines is based on the viscous porous granular ammonium oil explosives or viscous explosives (24kg / bag - 30g / bag) produced by the fixed production line on the ground of the explosives factory, and the special box for civilian explosives is used. The viscous porous granular ammonium oil explosives or viscous explosives are packed in a type vehicle, transported to a civil explosives sales company through long distances, and then resold by the civil explosives sales company to the blasting company, and the blasting company will pack the viscous porous granular ammonium oil explosives or vis...

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the large safety risk factors in the latex matrix preparation process of the above-mentioned downhole on-site mixing emulsion explosive vehicle, the preparation process is complicated, and the preparation process is semi-continuous (because the latex matrix needs to be fixed and prepared from a special latex matrix ground, then installed and then mixed with other raw materials to form explosives), while the emulsion explosives produced by the existing mixed trucks have a high density, and it is impossible to blow the explosives into the holes at all, and the state of the explosives Thin and poor viscosity can not meet the blasting requirements for effectively filling the blast hole, and can not meet the blasting requirements for underground vertical holes and inclined holes; and the porous granular ammonium produced by the multi-functional emulsified ammonium oil explosive mixed truck The drug state of oil explosives is loose granular, it is not viscous, and it cannot meet the requirements for the blasting of downhole vertical holes and inclined holes; and the heavy emulsion explosive has poor fluidity, and it cannot meet the requirements for underground vertical holes and inclined holes. Requirements for explosive blasting

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