Field emulsion explosive mixing and charging system and charging method suitable for underground engineering

A technology of emulsion explosives and underground engineering, applied in explosives, blasting, etc., can solve the problems of increasing the working pressure of the drug delivery pump, prone to explosion, and large depth, so as to improve the charging effect, prevent material return, and improve the mixing characteristics Effect
CN102997767AActive Publication Date: 2013-03-27CHINA GEZHOUBA GRP YIPULI CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA GEZHOUBA GRP YIPULI CO LTD
Publication Date
2013-03-27

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Abstract

The invention discloses a field emulsion explosive mixing and charging system and charging method suitable for underground engineering. The drug outlet of a mixing machine is connected with the drug inlet end of a drug conveying pump; the drug outlet end of the drug conveying pump is communicated with a drug conveying hose through a water ring adding device; a mixing shaft is arranged in the drug mixing cavity of a mixing machine shell; a premixing chamber is formed above the feeding hole of the mixing machine shell; a drug spray device is arranged at the drug outlet end of the drug conveying hose; a spray head of the drug spray device has a cylindrical structure; and the spray head is provided with a main drug spray hole along the axial lead of the spray head. The aim of ensuring the explosion effect is fulfilled mainly through technical innovations on three aspects: I, the pre-mixing chamber is formed on the top of the mixing machine shell; II, the sensitizing way of the emulsion explosive is physical sensitization; and III, the drug spray device is additionally arranged at the upper end of the drug conveying hose. Meanwhile, specific to the aim of lowering the working pressure of the drug conveying pump, a shearing device arranged on the drug conveying hose and used for increasing the viscosity of the emulsion explosive in the prior art is eliminated.
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Description

technical field

[0001] The invention belongs to the field of mixed charging of explosives for underground engineering, and in particular relates to an on-site mixed charging system and charging method for emulsion explosives suitable for underground engineering. Background technique

[0002] Underground engineering (such as underground mines) mostly adopts the mining method of segmental caving without pillars, and the blastholes are arranged in an upward fan shape. Traditionally, ammonium oil explosives chargeers or carts are mainly used for charging. The charging principle is to take advantage of the good fluidity of powdered (or granular) ammonium oil explosives. Blow into the blast hole. This traditional charging method has problems such as high charge return rate, high air pollution, low filling density, and poor blasting effect. At the same time, because ammonium nitrate, the main component of ammonium oil explosive, has strong water absorption, ammonium oil explosive...

Claims

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