GROUND EXPANSION RATIO MEASURING APPARATUS AND MEASURING METHOD

摘要

The present invention relates to an apparatus and method for measuring in situ the displacement by which the ground is expanded as water is supplied thereto, that is, the expansion ratio of the ground. The apparatus for measuring a ground expansion ratio according to the present invention comprises: a sensor for measuring the displacement of an excavated surface of the ground, the sensor being disposed in an excavated space part formed by excavating the ground downward from the boundary line of the ground to be measured; a conductor attached to the excavated surface of the ground; a water sprinkler unit for sprinkling water on the ground to be measured; and a controller electrically connected to the sensor so as to control the sensor and store a measured value obtained from the sensor, wherein the displacement sensor measures a change in the position of the conductor as the ground is expanded.