A Completion Method for Missing Concrete Dam Deformation Monitoring Data Pieces

A concrete dam is an important water-retaining hydraulic structure that stops or restricts the flow of water underground streams. It can be regarded as a constantly changing complex system. The deformation reflect its operation behaviors most directly among all effect quantities. However, due to change external environment, failure monitoring instruments, and existence human errors, obtained data usually miss pieces, sometimes missing pieces are so critical remaining fail fully actual patterns. In this paper, composition, characteristics, contamination information analyzed. From single-value completion method based on nonlocal average method, multi-value using BP (back propagation) mapping spatial adjacent points proposed improve accuracy analysis pattern prediction behaviors. case study performed validate method.