Мониторинг напряженно-деформированного состояния массива горных пород при подземном захоронении жидких радиоактивных отходов

Abstract

Ensuring reliable isolation of nuclear industry radioactive waste is determined by the technology of their injection, as well as the geological conditions of the environment where the disposal is carried out. In order to confirm the localization of liquid radioactive waste within the established forecast boundaries and confirm the technically sound condition of underground structures, work is being carried out to monitor the state of the subsoil and underground structures. The obtained results of monitoring the state of the subsoil and underground structures are used as input data for verification of models developed and used to justify the long-term safety of models and, if necessary, optimization of disposal regimes. The purpose of the geophysical studies described in the article was to assess the response of the geological environment to a change in the operation of an injection well. The work was carried out by the method of the natural pulsed electromagnetic field of the Earth, which was used for these purposes for the first time. The results of assessing the change in the stress-strain state of rocks in response to changes in reservoir pressure are presented. The conducted studies have shown the high prospects of the method for geotechnological monitoring of deep disposal sites for nuclear industry waste. The paper proposes new criteria for assessing the stress-strain state of rocks.