Sewer pipe deterioration prediction system and sewer pipe deterioration prediction method

摘要

PROBLEM TO BE SOLVED: To provide a sewer detection prediction system capable of predicting the deterioration state of a sewer on a span-by-span basis.SOLUTION: A deterioration prediction unit derives life spans or deterioration levels of spans of the same pipe ages which are management objects for a municipality. It allocates the spans to total height at positions of the pipe ages on a Weibull curve figure. It regards pipe ages of intersection positions (Z5, Z6, Z7) of a horizontal line (Y2) from the center in a height direction of each of the allocated spans to a direction increasing the pipe age or a direction decreasing the pipe age and w1 to w3 as indicators indicating soundness of the respective spans, and outputs them to a span deterioration database.SELECTED DRAWING: Figure 14