| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a method for measuring an amount of ground subsidence capable of measuring the amount according to a plurality of layers, by facilitating judging of a border of the respective layers of the ground even when the ground is made of the plurality of the layers. SOLUTION: A characteristic curve showing a relationship between a depth of the ground and a speed of a Rayleigh wave on the ground to be measured by generating the Rayleigh wave by using a vibration exciter. A point of contraflexure of the curve is judged, and a depth of each border of first to (n+1)-th layers (n: an integer of 2 or more) of the ground layers is specified. An instantaneous subsidence amount and a consolidation subsidence amount of the first layer are calculated by using a thickness of the specified first layer, and the instantaneous and consolidation subsidence amounts of each layer are calculated by using thickness of each of the specified layers up to the specified n-th layer except the first layer are calculated. At least one of the instantaneous and consolidation subsidence amounts of the respective layers is adopted in response to a fluctuating pattern of the curve of each layer, and the subsidence amount of each layer is obtained.</p> |
