Influence of rainfall pattern and infiltration capacity on the spatial and temporal inundation characteristics of urban waterlogging DOI Creative Commons
Yishuo Jiang, Jiake Li,

Yiping Li

и другие.

Research Square (Research Square), Год журнала: 2023, Номер unknown

Опубликована: Дек. 4, 2023

Abstract The rapid development of the city leads to continuous updating ratio land use allocation, especially during flood season, which will exacerbate significant changes in spatial and temporal patterns urban flooding, increasing difficulty forecasting early warning. In this study, evolution flooding a high-density area was analyzed based on Mike Flood model, influence mechanisms different rainfall peak locations infiltration rate scenarios characteristics waterlogging were explored. results revealed that under same return period, larger coefficient, value inundation volume area. When coefficient is small, higher period is, lag time P = 50a, r 0.2, delay for depths H > 0.03 m 0.15 reached 32 min 45 min, respectively, At time, there are also differences depths. greater depth, longer volume, more effect prolongation. It worth noting increase lead advance area, overall obvious than volume. times advanced by 4 ~ 8 − 2 9 m, after rate; smaller time. capacities obtained study can help provide new perspective warning waterlogging.

Язык: Английский

Research on the distributed Clark confluence model based on basic watershed units DOI Creative Commons

Junjun Zhu,

Jingru Liu,

Hui Zhou

и другие.

Journal of Water and Climate Change, Год журнала: 2024, Номер 15(4), С. 1840 - 1854

Опубликована: Март 14, 2024

ABSTRACT Based on the confluence principle, should represent aggregate of net rainfall confluences within each distinct basic watershed unit (BWU) a basin. The BWUs are categorized as V-type and Horseshoe-type based their shape characteristics two types time–area curves slope convergence have been derived separately. cascade river is modeled using lagged linear reservoir, resulting in development distributed CLARK model basin (BWU-DCLARK). key findings follows: (1) BWU-DCLARK effectively captures runoff process has successfully applied Yanduhe River Modeling results demonstrate high simulation accuracy. (2) time indicates that regulatory storage effects cannot be overlooked. (3) not only enables calculation flow at outlet but also facilitates computation any node along chain which great significance for hydrological forecasting un-gauged basins application effect will need further verification.

Язык: Английский

Процитировано

0
Assessing the effects of sponge city construction in Beijing with an improved coupled hydrologic-hydrodynamic model DOI Creative Commons
Siwei Cheng, Mingxiang Yang, Chenglin Li

и другие.

Research Square (Research Square), Год журнала: 2024, Номер unknown

Опубликована: Апрель 30, 2024

Abstract Low Impact Development (LID) theory represents a new paradigm for sustainable urban development, focusing on enhancing stormwater management, mitigating flooding, and reinforcing planning. In this study, we select Tongzhou District in Beijing as study area, establish an improved coupled hydrologic-hydrodynamic model based SWMM TELEMAC-2D that integrates the dynamics of surface, pipeline networks, river channels through one-way coupling method. The drainage capacity pipe network surface inundation under rainfall during different recurrence periods were simulated analyzed. results show concept LID, also known sponge city transformation China, offers significant flood mitigation benefits megacities. As return increase, number overflow nodes overloaded pipelines is observed by increase rapidly become stable area. Specifically, 100 year period scenario, original projected maximum depth 0.407m node proportion 20.8%. Through comparison simulation result suggest prioritizing reconstruction first-grade roads overpasses, followed LID rebuilding around to effectively infiltration rate mitigate risks.

Язык: Английский

Процитировано

0
Dynamic disaster risk assessment of urban waterlogging on pedestrian flow by intelligent simulation of hydrodynamics coupled with agent-based models in Chao-yang river basin of Nanning, China DOI

Huangkang Lan,

Yunchuan Yang, Hao Fu

и другие.

Stochastic Environmental Research and Risk Assessment, Год журнала: 2024, Номер 38(10), С. 3851 - 3874

Опубликована: Июль 26, 2024

Язык: Английский

Процитировано

0
Influence of rainfall pattern and infiltration capacity on the spatial and temporal inundation characteristics of urban waterlogging DOI Creative Commons
Yishuo Jiang, Jiake Li,

Yiping Li

и другие.

Research Square (Research Square), Год журнала: 2023, Номер unknown

Опубликована: Дек. 4, 2023

Abstract The rapid development of the city leads to continuous updating ratio land use allocation, especially during flood season, which will exacerbate significant changes in spatial and temporal patterns urban flooding, increasing difficulty forecasting early warning. In this study, evolution flooding a high-density area was analyzed based on Mike Flood model, influence mechanisms different rainfall peak locations infiltration rate scenarios characteristics waterlogging were explored. results revealed that under same return period, larger coefficient, value inundation volume area. When coefficient is small, higher period is, lag time P = 50a, r 0.2, delay for depths H > 0.03 m 0.15 reached 32 min 45 min, respectively, At time, there are also differences depths. greater depth, longer volume, more effect prolongation. It worth noting increase lead advance area, overall obvious than volume. times advanced by 4 ~ 8 − 2 9 m, after rate; smaller time. capacities obtained study can help provide new perspective warning waterlogging.

Язык: Английский

Процитировано

0