Abstract

A new scheme for measuring and simultaneously visualizing inclination of a rock structure is proposed. A mirror is installed in a mobilized zone in such a way that an observer can identify a light source in the mirror. If then the mirror rotates by a small amount due to movement of the rock structure, the observer would first find the reflected image of the light source moving in the mirror, then lose it once the rotation exceeds a limit value determined by mirror size, distance between the observer and the mirror, and the distance between the mirror and the light source. A total system of measuring inclination and visualization using this method allows a low cost monitoring system of arbitrary rock structures.

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