SCANSITES A NEW TOOL FOR DAM’S REMOTE VISUAL INSPECTION
Degradation of dams is usually reflected by its surface defects; therefore, it is necessary to inspect periodically the surface of dams for evaluating their changes. The visual inspection to dams can admittedly gives a good prospect of the structure’s resistance and hence it is a good contribution to the prevention of the structure degradation. Unfortunately, previous methods of inspecting dams involve climbing, power operating rigging or binoculars and manual recording of degradations. Any engineer, who was given the task of performing an inspection on such structures, quickly realizes the difficulty, if not impossible, to precisely detect defects. Moreover, the quality of such kinds of inspection relies on the experience of the technician itself and thus is subjectively dependent. This makes the measurement of evolution with respect to time ineffective. Therefore, these inspections are neither objective, nor precise and nor adaptable to long term monitoring. In other words, the visual parameters cannot be treated as a measurement like others auscultation’s parameters such as pressure, displacement. To improve this, SITES initiated 10 years ago a research program based on a new visual inspection concept: The Scansites system, which allows mapping, from distance, all the defects on the dam, with a high precision and a total objectivity. This is an integrated system of optics, controls, and computer technologies. This information system measures the exact location, the picture, the type (cracks, corrosion, spalling…), and the dimensions of each defect, and all of the measured parameters will be transferred into a global database in order to obtain, automatically, a cartography and an objective diagnosis about the state of degradation. In terms of the improvement of the inspection efficiency and the labour intensity reduction, Scansites system takes the visual inspection to a new level.
Dam visual inspection surface defect
Jean-Fran(c)ois SAGEAU Fang CHEN
SITES, France SITES SA, 2 Bis, Avenue du Centre 92500 Rueil-Malmaison France
国际会议
西安
英文
1-17
2005-11-01（万方平台首次上网日期，不代表论文的发表时间）