Induced seismicity and the possibilities of controlled relaxation of tectonic stresses in the Earth’s crust |
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Authors: | K M Mirzoev A V Nikolaev A A Lukk S L Yunga |
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Institution: | 1.Schmidt Institute of Physics of the Earth,Russian Academy of Sciences,Moscow,Russia |
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Abstract: | Natural and anthropogenic impacts on seismicity are considered. Taking into account the importance of the discussed problem,
the authors propose to open the discussion on the questions considered. In this connection a wide circle of known experimental
data is considered, which are indicative of the possibility in principle of active impact on the seismogenic medium for the
smooth relieving of accumulated tectonic stresses in the Earth’ s crust. The reasoning is presented of one of the promising
ways of the smooth controlled relaxation of the accumulated tectonic stresses in the Earth’s crust at the places of the probable
onset of strong earthquakes due to a considerable increase in the plastic slips, which facilitate the decrease of the number
and energy of earthquakes. The approach proposed is based on the results of the works on the excited seismicity, obtained
in different regions of the Earth. Special attention is given to the most detailed long-term investigations of the excited
seismicity in the region of the reservoir of the Nurek hydroelectric station in Tadzhikistan and in the neighborhood of the
actively mined Romashkinskoe oil deposit in the Republic of Tatarstan. The results of the laboratory investigations of the
behavior of samples made of materials of crystalline and amorphous structures under the action of pressure and vibration are
invoked for the substantiation of the physical nature of the observed effects. For the reduction of seismic hazard, it is
proposed to use vibration actions and water injection in the bore holes at the places of the expected seismic catastrophes
in a time mode matched with the tidal motions of the Earth. |
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