SUBSOIL THROUGH-VISION METHOD

摘要

PURPOSE:To enable quick and accurate inspection of structure of a subsoil, by concentrating a plurality of elastic waves or electromagnetic waves varied in the phase at a desired point of the subsoil to perform a image display of the reflected waves thereof. CONSTITUTION:A plurality of elastic wave oscillators or electromagnetic wave transmitters 1 are set on the surface of a subsoil 2 or a bore hole and elastic waves or electromagnetic waves 8 shifted in the phase from one another are transmitted to a desired point P in the subsoil from the oscillators or transmitters 1. Then, the reflected waves thereof are received with a receiving transducer 7 to be transmitted to a computer 4, which 4 analyzes an input data to be shown on a CRT display 5. With such an arrangement, the phase of the electromagnetic waves or elastic waves outputted from the oscillators or the transmitters 1 is controlled thereby enabling inspection of the structure at the desired point in the subsoil by direct view through an image.