METHOD OF BLASTING UPWARD BOREHOLE CHARGING Russian patent published in 2017 - IPC F42D1/08 E21F16/00 E02D19/06 

Abstract RU 2607483 C1

FIELD: blasting operations.

SUBSTANCE: invention relates to explosive substances (ES) charges formation in wells and can be used during blasting upward boreholes charging, regardless of their watercut degree, on underground mining works for extraction of minerals. Method of blasting upward boreholes charging, including live primer location in well upper part with subsequent well filling with ES and formation, or not, of stemming below ES. In well upper part above live primer drain cavity is created, by arranging plug with drain tube in well, wherein tube lower end, after charge formation, is located below charge.

EFFECT: invention allows to ensure stability of ES charge column under conditions of large water influx.

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RU 2 607 483 C1

Authors

Dobrynin Aleksandr Arturovich

Dates

2017-01-10Published

2015-12-18Filed