| 摘要 |
FIELD: blasting operations to break hard media and rocks. SUBSTANCE: hole with sealed surface and combustible component of oxyliquit are cooled with gas of evaporation of cryogenic liquid - nitrogen or liquid air. After this oxygen is poured into hole with cooled combustible. In agreement with second variant liquid oxygen is used both as cooling agent and oxidizer - component of oxyliquit. According to third variant cooling agent - nitrogen or liquid air is poured into face zone of hole, combustible is charged, gravel or pebble is put on surface of combustible, combustible and walls of hole are cooled with upward current of gas of evaporating cooling agent. Oxygen is poured into hole after complete evaporation of cooling agent. EFFECT: updated technology of doing blasting operations with oxyliquit, enhanced safety of operations. 16, 7 dwg
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