| 摘要 |
FIELD: substances applicable in provision of safety of blasting operations in gassy and dusty mines, particular, compositions of bottom-mouth flame-arresting stemming of blast holes intended for prevention burning out of blast hole charges, cooling of explosion products within the volume of blast hole up to loss of ability to ignite methane-air mixture in case of burst into gassy face space, neutralization of toxic gases of explosion products and suppression of suspended coal dust. SUBSTANCE: composition of bottom- mouth stemming is in form of water-in-oil emulsion which consists of emulsifying agent, oil, flame arrester and water. EFFECT: provision of composition of bottom-mouth stemming with viscosity ensuring, under conditions of storage and charging, its nonflowing-through hole in ampoule and converting into liquid with impact of blasting of live primer for arresting of burning passive charge and increased storage life with preservation of indicated properties. |
