2차 압밀침하를 고려한 도시우수관망시스템의 유출특성분석

In general, underground facilities are designed accounting for the primary consolidation settlement and are buried in consideration of the allowable residual settlement. The subsequent secondary consolidation settlement is smaller than the first one and occurs during a longer period of time. However, in areas where deep soft grounds (coastal areas, etc.) are abundant, settlement of up to 50 cm may occur due to secondary consolidation, the hydraulic characteristics may change, and the facilities may operate under conditions that are different from the initial planned design. Therefore, this study establishes scenarios accounting for secondary consolidation settlement (long-term settlement) and various settlement degrees and compares the hydraulic characteristics of rainwater pipelines with those of the initial plan for storm-water drainage. An attempt is made to evaluate the uncertainties concerning the capabilities of the facilities.