从城市更新的洪水缓解角度来看,合和协作优化模拟不透水表面和排水系统的优化模型
Entong Ke1, Juchao Zhao2, Yaolong Zhao2
1Beidou Research Institute, South China Normal University, Foshan 528225, China; Guangdong Research Center of Smart Land Engineering, Foshan 528225, China; Key Laboratory of Natural Resources Monitoring in Tropical and Subtropical Area of South China, Ministry of natural resources, Guangzhou 510663, China.
The Science of the total environment
|January 27, 2024
概括
本研究介绍了一种改进的城市洪水减缓模型,该模型将排水系统与不透水表面设计相结合. 新方法通过协同优化两个元素,显著提高了防洪效率.
科学领域:
- 环境工程 环境工程
- 城市规划 城市规划
- 水资源管理 水资源管理
背景情况:
- 城市暴雨洪水对城市发展构成重大挑战,现有的缓解方法往往缺乏整合.
- 不透表面最佳设计 (ODIS) 模型是有价值的,但通常不包括关键的排水系统考虑因素.
研究的目的:
- 开发一个先进的,适应性的优化模型,以缓解城市雨水洪水.
- 将排水系统容量纳入无表面的最佳设计,以加强洪水控制.
主要方法:
- 开发了一个新的优化模型,整合了关于暴雨和排水能力的假设.
- 该模型采用非主导排序遗传算法-II (NSGA-II),多变量线性编程 (MLP) 和土壤保护服务曲线数 (SCS-CN) 模型.
- 一个案例研究是在中国广州市旧城区进行的.
主要成果:
- 拟议的模型实现了5.70%的优化效率,比现有的ODIS模型提高了十倍.
- 该研究表明,协作优化不透水表面和排水系统的有效性.
- 一个"高-低-高"的空间分布无透的表面密度被确定为一个最佳的设计.
结论:
- 排水系统的优化至关重要,无透表面的调整是城市洪水减轻的补充.
- 针对不同的洪水风险地区,需要针对性的优化策略.
- 开发的模型提供了对城市洪水控制的综合方法.
相关概念视频
Design Example: Analyzing Capacity Contours for Flood Risk Assessment
47
Flood risk assessment involves careful planning and analysis to ensure the safety of communities near water retention structures. Capacity contours are a vital tool in this process, as they illustrate the potential spread of water at specific levels in a given area. In the context of building a bund across a small valley, these contours play a critical role in evaluating the safety of nearby residential areas.In this example, the bund is intended to store stormwater in the valley. The engineers...
47
Modeling and Similitude
267
Scaled modeling is a fundamental technique in engineering, enabling the study of large and complex systems by creating smaller, manageable replicas that recreate critical characteristics of the original. In hydrology and civil infrastructure, for example, scaled models of dams help analyze water flow, turbulence, and pressure. This method allows for accurate predictions of real-world behavior within a controlled environment, significantly reducing the cost and time involved in full-scale...
267
Conservation of Mass in Moving, Nondeforming Control Volume
1.1K
Stormwater detention basins are essential in managing runoff during heavy rainfall, particularly in urban areas where impervious surfaces increase the risk of flooding. Understanding the conservation of mass in these systems allows engineers to optimize basin performance, balancing inflow, outflow, and water storage.
In the context of a detention basin, the conservation of mass states that the total mass of water entering the basin must equal the mass leaving the basin plus any accumulation of...
In the context of a detention basin, the conservation of mass states that the total mass of water entering the basin must equal the mass leaving the basin plus any accumulation of...
1.1K
Design Example: Creating a Hydraulic Model of a Dam Spillway
177
Scaled hydraulic models of dam spillways provide a practical way to replicate and study the intricate flow dynamics of these structures. Often built to a 1:15 ratio, these models allow for observing critical water behavior, such as velocity distribution, flow patterns, and energy dissipation.
177
Typical Model Studies
359
Fluid mechanics model studies often utilize scaled-down systems to predict fluid behavior in full-scale environments, such as river flows, dam spillways, and structures interacting with open surfaces. Maintaining Froude number similarity in river models is crucial, as it replicates surface flow features like wave patterns and velocities.
359
Applications of GIS: Disaster Management and Emergency Response
85
Geographic Information System (GIS) technology is essential for risk identification, action prioritization, and resource optimization in critical situations like flooding and earthquakes. By integrating spatial and demographic data, GIS provides a comprehensive framework for emergency response.GIS integrates data layers, like rainfall intensity, topography, elevation profiles, and river levels, to model high-risk flood zones. These layers assess areas susceptible to flooding based on their...
85


