Abstract
Summary The development of geohazards may be caused by both construction effects or operation of a structure on the ground base (industrial intensification), and variations in the temperature, hydrogeological, tectonic and other characteristics of the base under the influence of natural factors. Monitoring of geohazards in areas of their potential development allows one to make timely forecasts, to prevent accidents or minimize their damage. In this paper, authors investigate the possibilities and expedience of deploying crosshole seismic tomography (CST) technology for monitoring the condition of subsurface. The applicability of the method is considered through numerical kinematic (ZondST2d) and full-wave modeling of seismic wave fields followed by reconstruction of the sections of elastic waves velocity distribution via seismic tomography. This study analyzes several particular geological situations with the development of karst, suffosion, and permafrost thawing. The paper also evaluates the resolution power of CST method and shows its dependence on the signal frequency of borehole source.
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