Investigation of present-day stress states at KURT site

The states of stress (orientations and magnitudes) can be estimated through various stress indicators obtained from various sources, such as hydraulic fracturing test, borehole observations, rock core data, and earthquake focal mechanism solutions. In this study, we investigated in situ stress states in KURT site, using hydraulic fracturing tests and borehole wall failure observations. In this paper, we investigated in situ stress conditions at KURT research site, using the results of hydraulic fracturing and borehole observations. The estimated stress regime in study site is in favor of thrust faulting (<700 m) or strike-slip faulting, which agrees with earthquake focal mechanisms in Korea and previous stress results.