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Journal of Mining Science, Vol. 43, No. 4, 2007 ROCK FAILURE
 

Summary: 409
Journal of Mining Science, Vol. 43, No. 4, 2007
ROCK FAILURE
EFFECT OF BOREHOLE CHARGE STRUCTURE
ON THE PARAMETERS OF A FAILURE ZONE IN ROCKS UNDER BLASTING
E. N. Sher and N. I. Aleksandrova UDC 622.235
The calculation scheme of rock failure under explosion of a borehole charge is presented with account for
density of borehole filling with an explosive, availability of air and inert intervals. According to the
calculated data, the introduction of air intervals diminishes the specific explosive consumption by 9 27%
depending on the explosive power intensity. The similar effect is gained by introducing an inert rod into a
borehole charge.
Failure, explosion, rocks, borehole charge, air interval, charge structure
Studies of explosion effects on solid media were conducted since the establishment of the Siberian
Branch of the Russian Academy of Sciences, they were supported mainly by the personal interest of
Academician M. A. Lavrent'ev to explosion problems. Investigations concerned different aspects:
cumulative action, development of technological schemes for welding by explosion, explosive metal
processing, compacting of powder materials. M. A. Lavrent'ev paid much attention to the practical
application of explosion action in the field of the national economy. Thus, models describing explosion
effect in soils and rocks, were developed at the laboratory headed by V. M. Kuznetsov, Institute of
Hydrodynamics, SB RAS. The fluid and fluid-solid models [1, 2] were proposed to calculate an

  

Source: Alexandrov, Victor - Sobolev Institute of Mathematics, Russian Academy of Sciences, Novosibirsk

 

Collections: Mathematics