论文部分内容阅读
在进行城市内涝风险评估时,当数学模型法使用受到限制时,可通过一种基于推理公式的简便方法进行评估,即通过将管网系统在临界状态下的理论过流能力Q_p与基于推理公式的内涝防治设计重现期下的设计雨量Q_s进行对比,进而实现对积水程度的评估。将该方法和数学模型法分别应用于同一排水流域,并与历史内涝情况进行对比,结果表明,基于推理公式进行内涝风险评估的简便方法具有一定的可行性及参考价值。
When conducting risk assessment in urban cities, when the use of mathematical model methods is limited, a simple method based on reasoning formulas can be used for assessment, that is, the theoretical overcurrent capability Q_p and the reasoning formula based on the critical state of the pipe network system. Comparing the design rainfall Q_s under the recurrence control design of the internal hemorrhoids, the evaluation of the degree of accumulated water is realized. This method and the mathematical model method were applied to the same drainage basin, and compared with historical intrinsic conditions. The results show that the simple method based on reasoning formula for intrinsic risk assessment has certain feasibility and reference value.