APPARATUS FOR MEASURING IN-SITU STRESS OF ROCK USING THERMAL CRACK

摘要

An apparatus for measuring in-situ stress of a rock using thermal cracks is provided to generate tensile stress by applying low temperature heat to the rock, thereby inducing cracks on the rock to measure in-situ stress. An apparatus for measuring in-situ stress of a rock using thermal cracks includes a coolant accommodating body, an adhesion member, a temperature sensor, a coolant injection member, and a crack detection member. The coolant accommodating body is a case for accommodating coolant(r) for applying ultra-low temperature heat to a wall having a hole. The coolant accommodating body includes an inner wall(11), an outer wall(12), an upper cover(13), and a lower cover(14). The inner wall has a circular shape and a certain height. The outer wall surrounds the inner wall at the same height as the inner wall.