Detailed information



The seismic surveying cycle is performed with a view to pit wall stability monitoring during blasting operations. It is found that the lower values of the seismicity coefficient imply the stronger and more monolithic pit wall rock mass and, vice versa, the higher seismicity coefficient means the worse ground conditions, i.e. more jointed rock mass in the given pit wall area. The article illustrates capacities of open pit mine field mapping by the seismicity coefficient to detect more seismically sensitive areas nearby which blasting should be carried out with a particular care. The found relations between the PPV values and reduced distances in different areas of open pit mine field can be used for prompt adjustment of drilling-and-blasting parameters and for sufficiently accurate calculation of radius of a seismically haz ardous zone under large-scale blasting. The calculations with the conservative value of the seismicity coefficient will yield an increased mass of charge per delay stage and, consequently, the higher seismic impact in unfavorable areas of open pit mines, which is inadmissible.

: 7
УДК: 622.235
DOI: 10.25018/0236-1493-2018-7-0-189-195
Authors: Alenichev I. A.

Authors' Information:
Alenichev I.A., Candidate of Technical Sciences, Researcher,
e-mail: igor-alenichev@ya.ru,
Mining Institute of Kola Scientific Centre of Russian Academy of Sciences,
184209, Apatity, Russia.

Key words:
Rock, seismicity coefficient, large-scale blast, seismic blasting action, dynamic action, reaction
of the rock mass.


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