1.珠江水利委员会珠江水利科学研究院,广东 广州 510611
2.水利部粤港澳大湾区水安全保障重点实验室,广东 广州 510611
魏乾坤(1993—),男,硕士,主要从事洪涝灾害防御等工作。
收稿:2026-07-23,
修回:2026-09-21,
录用:2026-09-29,
网络首发:2026-10-10,
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魏乾坤,梁冀雨,黄瑞晶.基于降雨量-内涝面积率模型的内涝防御韧性评价[J].人民珠江,DOI:10.3969/j.issn.1001-9235.XXXX.XX.001.
WEI Qiankun,LIANG Jiyu,HUANG Ruijing.Evaluation of Waterlogging Defense Resilience Based on a Rainfall-Waterlogging Area Ratio Model[J].PEARL RIVER,
魏乾坤,梁冀雨,黄瑞晶.基于降雨量-内涝面积率模型的内涝防御韧性评价[J].人民珠江,DOI:10.3969/j.issn.1001-9235.XXXX.XX.001. DOI:
WEI Qiankun,LIANG Jiyu,HUANG Ruijing.Evaluation of Waterlogging Defense Resilience Based on a Rainfall-Waterlogging Area Ratio Model[J].PEARL RIVER, DOI:10.3969/j.issn.1001-9235...001.
构建城市内涝防御韧性体系是应对洪涝灾害的有效措施,但韧性防御与脆性防御的定量判别标准难以支撑现状、规划防御体系的韧性评价。类比材料应力-应变本构,构建防御体系的降雨量-内涝面积率模型,提出三阶段完整性判据、特征荷载阈值、硬化判别指数
B
与屈强比
λ
;以广州市平原感潮河网区小流域A与丘陵区小流域B为例,采用三耦合模型对现状与规划4套体系施加18级降雨。结果显示流域A规划、流域B规划、流域A现状、流域B现状体系的硬化判别指数依次为0.15、0.60、0.80与1.26,对应判为强、中、弱韧性与脆性;流域B规划体系在170 mm破坏,屈强比0.78。曲线形态可定量判别防御体系的韧脆性质,特征荷载与屈强比可为规划设计及超标准设防提供定量依据。
Building a resilient urban flood defense system is an effective measure against waterlogging disasters
but quantitative criteria for distinguishing between resilient and brittle defense are insufficient to evaluate the resilience of current and planned defense systems. Analogous to the stress-strain constitutive model of materials
a rainfall-inundation area ratio model for defense systems was developed
introducing a three-stage integrity criterion
characteristic load threshold
hardening discriminant index B
and yield-to-tensile strength ratio λ. Using small watersheds A (plain tidal river network area) and B (hilly area) in Guangzhou as case studies
a three-coupled model was employed to subject four sets of systems (current and planned) to 18 rainfall levels. The results showed hardening discriminant indices of 0.15
0.60
0.80
and 1.26 for the planned systems of watershed A and B
and the current systems of watershed A and B
respectively
corresponding to strong
moderate
weak
and brittle resilience. The planned system of watershed B failed at 170 mm with a yield-to-tensile strength ratio of 0.78. The curve morphology can quantitatively distinguish the resilient-brittle nature of defense systems
while the characteristic load and yield-to-tensile strength ratio provide a quantitative basis for planning
design
and super-standard defense measures.
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