| 摘要 |
PROBLEM TO BE SOLVED: To provide an evaluation method for a cavity and loose region of a sandy ground capable of appropriate determination by using the test results of the specific resistance distribution and the results of an original position test of a standard penetration test of the already confirmed EM exploration etc.; the cavity and loose region in the reclaimed land behind the quay are scarcely confirmed by boring tests at a plurality of sites only on points or on a line in the past. SOLUTION: The evaluation method of the cavity and loose region of the sandy ground is as follows: the specific resistance distribution of the objective ground is measured by the method such as the EM exploration, or the specific resistance tomography for grasping the relation between the relative density of the ground and the specific resistance; the original position test such as three component cone penetration test, or RI cone penetration test is performed; the relative density of the original position is converted from the result of the original position test; the correlation between the specific resistance of the specific resistance distribution and the original position relative density is determined; the relative density of the evaluation original point for evaluation as the cavity and the loose region 16 are determined where the range of specific resistance lower than that specifying the cavity and loose region 16 is used. COPYRIGHT: (C)2005,JPO&NCIPI |
