FIELD: blasting operations.
SUBSTANCE: explosive device is delivered under the object to be exploded by the plant of horizontal directional drilling (HDD) through the drilled hole. The delivery method of the explosive devices by the plant of horizontal directional drilling comprises the construction of horizontal directional well under the object to be exploded and drilling operations from behind the safe shelter. Delivery of the explosive device under the object to be exploded is carried out by using a drill string consisting of drill pipes, an expander, a string disconnector and a swivel.
EFFECT: increased protection of the crew.
3 dwg
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