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Vol. 17 (2014 year), No. 2

A.A. Kozyrev, S.N. Savchenko
On control of stressed-deformed behaviour of rock mass at roadheading under rockburst hazardous conditions

By the 3D finite elements method the problem has been considered for the case of changing stressed-deformed behaviour of rock mass in the near-excavation zone with relief slots forming in the roof differentially remote from the face. The recommendations have been given for control over the rock mass stressed-deformed behaviour in the roof and face of the drift by making relief slots depending on the level of initial stress field in the intact massif.

(in Russian, стр.4, fig. 3, tables. 0, ref 2, Adobe PDF, Adobe PDF 0 Kb)

Vol. 17 (2014 year), No. 2

A.A. Kozyrev, Yu.V. Fedotova, O.G. Zhuravlyova
Probabilistic prediction of seismic hazardous zones in rockburst-prone ore mines of the Khibiny massif

The complex technique for seismic hazardous zones under conditions of rockburst-prone ore mines of the Khibiny massif has been developed; it is based on the combined use of different precursors of seismic emission flow. The obtained changes in number, configuration and location of the zones indicate character of the stress redistribution depending on the intensity of large-scale mining operation in rockbursts prone mines. The results of spatial and temporal prediction of the seismic hazardous zone basing on the identified precursor of changes of complex estimation values of the seismic activity local zone and virtual realization of the strong seismic event in the Yukspor deposit have been considered.

(in Russian, стр.6, fig. 4, tables. 1, ref 11, Adobe PDF, Adobe PDF 0 Kb)