Simulation study on effect of permeable pavement on reducing flood risk of urban runoff

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scopus – master journals – JCR

ایمپکت فاکتور

۴٫۲۷۶ در سال ۲۰۲۰

شاخص H_index

۲۶ در سال ۲۰۲۱

شاخص SJR

۰٫۹۰۱ در سال ۲۰۲۰

شاخص Quartile (چارک)

Q1 در سال ۲۰۲۰

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Simulation study on effect of permeable pavement on reducing flood risk of urban runoff

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Simulation study on effect of permeable pavement on reducing flood risk of urban runoff


Permeable pavement is part of the low  impact development (LID) measurement, which can decrease urban surface runoff coefficient and flood peak flow.  In this paper, a two-way, six- lane road in  Nanjing was selected as  the study area. Storm water management model (SWMM) was used to simulate  the effect of different pavement structures (drainage sur- face,   permeable pavement  and permeable road) under  different rainfall conditions on reducing surface runoff and controlling urban stormwater. The  simulation results show that the drainage surface can  reduce part of surface runoff, but it has no  influence on  the reduction and hysteresis of flood peak. The permeable pavement can  reduce part of surface runoff and flood peak and can  delay peak time. The  permeable road has better effect on reducing runoff coefficient and flood peak, which can  effectively reduce the pressure of urban drainage and reduce the risk  of stormwater  flood.

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  1. Introduction

According to  China’s  National Bureau of Statistics, the urbanization rate of China  reached 57.35 percent in  ۲۰۱۶٫ The underlying surface condition in urban area has  changed a lot as the urbanization process is accelerating. Impervious surfaces such as concrete structures and hardened roads have increased considerably, which increases the surface runoff and the risk of urban floods. In addition, groundwater has  not  been effectively supplied due to the lack of rainwater drainage. Many cities are  therefore faced with severe water shortage and drought. Developed countries such as United States, UK, Australia began to pay  attention to such problems decades ago. They developed a series of techniques to control urban runoff and introduced a series of stormwater management plans and guidelines. These techniques and guidelines have been applied systematically. Since October 2014, China  has  proposed a ‘‘sponge city” strategy for the development of urbanization based on the summary of urban stormwater control concepts in foreign countries. A series of policy and technical guidelines were issued thereby.

The design of city  road should adjust timely, as city  road is a very  important part of city  development, such as creating ecological grass ditches, sunken lawns, rain gardens and permeable pavement. Zhang (2009) used SWMM  to  simulate the surface runoff of a residential area in  Nanjing which was  reconstructed with sunken lawn and permeable pavement. Jin et al. (2010) used SWMM  to study the variation of the flood  peak of the drainage pipeline in the area covered by permeable

brick and sunken lawn in  Beijing.  Zhenci and Guo  (۲۰۱۷) studied the relationship between rainfall and runoff in  the area under four  different underlying conditions by distributed water stability model. Zhou  (۲۰۱۷) established the runoff model and studied the ability of the sunken lawn to store rainfall, when it was  under the conditions of different rainfall frequency and different proportion of green area. Cai et al. (2017) used SWMM  to  simulate the runoff and drainage condition under different rainfall conditions in Guangzhou. Palla  used SWMM  to  simulate the hydrologic response of a small urban catch- ment which was  covered by  green roofs and permeable pavements. Guan et al.  (۲۰۱۵) quantifies the effects of common stormwater management techniques on urban runoff generation, such as green roofs and permeable pavements. Tsihrintzis tested the applicability of SWMM in small subtropical urban catchments and provided modellers with a way  to select appro- priate input parameters to be used in planning studies. Park  used SWMM  to simulate and investigate changes in runoff and peak runoff with LID plans. Do-Hyson (2005) used SWMM  to investigate and analyze the runoff characteristics of non-point source pollutions in the municipal area of Jeonju. Temprano (2006) used SWMM to predict the pollution in rainy weather in a combined sewer system catchment in Santander, Spain.

Researchers at home and abroad have carried out  studies on the effect of different kinds of LID measures on the control of surface runoff. Permeable pavement can  be divided into drainage surface, permeable pavement and permeable road, based on the flow path of surface runoff. However, the influence of different kinds of permeable pavement structures on urban sur- face  runoff has  not  been reported. In this paper, a two-way, six-lane road in  Nanjing was  selected as  the study area, and SWMM was  used to simulate the effect of different pavement structures under different rainfall conditions on reducing sur- face  runoff and controlling urban stormwater. The  objective of this study is to  provide theoretical support for the ‘‘sponge city”.

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