Analysis and Simulation of Drainage Capacity of Urban Pipe Network

Wenting Zhang,Xingnan Zhang,Yongzhi Liu

doi:10.19026/rjaset.6.4091

Abstract

With the rapid development of urbanization, impervious areas spread quickly, which have greatly influenced regional hydrology and water resources. The water quality is getting worse and worse. The flood and drought disasters have aggravated. Human living environment has changed and consequently sustainable development of economy is restricted. The drainage pipe network plays a very important role in urban drainage and flood control. In the study, using of computer technology, the drainage capacity of study area in different design rainstorm return periods (P = 0.25, 0.5, 1, 2, 5, 10 a, respectively) is analyzed and simulated by Storm Water Management Model (SWMM). Part of the pipe network that are filled slowly and change great are found out fewer than 6 design rainstorms, which provide the basis for reconstruction of urban conduits. The simulation results can provide strong technical support for the city drainage system planning and management.

Highlights

Due to the urbanization, the city population and the impervious areas are increasing
The city population and the impervious areas are increasing. These two parts will lead to other aspects of problems
The precipitation that falls on impervious surfaces becomes surface runoff which is connected directly to the sewer network

Summary

Introduction

The city population and the impervious areas are increasing. 0.00 flow path for sheet flow runoff, area of the sub catchment, Percent of the impervious land area, average percent slope of the sub catchment, Manning's n for overland flow over the sub catchment including the Fig. 2: Different frequency distribution of storm intensity impervious portion and pervious portion, depth of depression storage and infiltration parameters.

Results

Conclusion