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Название General features of strong rock bursts and induced earthquakes in critical-stress areas of the Earth’s crust
DOI 10.17580/gzh.2021.01.04
Автор Batugin A. S.
Информация об авторе

NUST MISIS, Moscow, Russia:

A. S. Batugin, Professor, Doctor of Engineering Sciences, as-bat@mail.ru


The problem connected with rock bursts and induced earthquakes is yet one of the most critical in the mining regions. The manmade nature of disastrous earthquakes induced in the areas of the heaviest impact on the subsoil is being widely discussed. The main argument against the manmade genesis of such earthquakes is their great depths and high energies. The general features of the induced earthquakes are considered. The displacement directions of the walls of large tectonic faults during such events are analyzed. The sizes of focal zones are estimated and related with sizes of geodynamcially active blocks in the Earth’s crust. The location of hypocenters of geodynamic events relative to the manmade impact zones is studied. The found homogeny of strong rock bursts and induced earthquakes is explained by the interaction of local and regional (global) geodynamic processes. The critical stress state of the upper Earth’s crust having hierarchical block structure is considered as the basis of such interaction. When focal zones of rock bursts and induced earthquakes have sizes of hundreds of meters or a few kilometers, the initiation zones of such events reaches many kilometers in size, is commensurable with the Earth’s crust blocks and is larger than the mining impact zone. Therefore, displacements along large faults are the part of a tectonic process, i.e. displacement directions along large faults during strong rock bursts are correlated with the regional stress field.

Ключевые слова Rock bursts, induced earthquakes, general features, Earth’s crust, active blocks, geodynamic processes
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