TARGETING WAVE-DISSIPATING BLOCKS EXAMINATION OF POINT CLOUD DATA EVALUATION METHOD

Abstract

 Since the wave-dissipating block has a long shape in the extension direction and it is difficult to work directly above the block in terms of safety management, the "Surveying Manual Using ICT Equipment (Block Installation Work)" will also be updated based on the latest research. It is expected that UAV surveying will be used. However, there are few cases in which the evaluation and utilization methods of the acquired data of the wave-dissipating block have been examined, and sufficient knowledge is lacking in utilization. Therefore, in this study, we clarified the point cloud characteristics of the wave-dissipating block using a model and locally acquired data, and examined the evaluation method for utilization.

 As a result, it was confirmed that the applicability to the appearance confirmation method using the point cloud data, the point cloud characteristics of the wave-dissipating block in the installation direction, and the validity of adopting the highest value in the area evaluation based on the point cloud characteristics were confirmed. The area evaluation is an effective means for grasping the shape and current status of a long wave-dissipating block in the extension direction, and is expected to be applied to efficient management in the future.