The Investigation of Water Supply System Capacity

• Main Authors: Chen, Chia-Ling, 陳嘉伶
• Other Authors: Chang, Liang-Cheng
• Format: Others
• Language: zh-TW
• Published: 2012
• Online Access: http://ndltd.ncl.edu.tw/handle/18696650108504207111

碩士 === 國立交通大學 === 工學院工程技術與管理學程 === 100 === The Taiwan High-Speed Rail (THSR) station in the HSR special zone in Zhubei City has expedited the land development and population increase in the surrounding area, and will increase the water consumption in the near future. Consequently, concerns regarding the future water shortage in this area have emerged. Thus, this study adopted EPANET (version 2.0) software, which was developed by the U.S. Environmental Protection Agency (EPA), to investigate whether the existing water distribution network capacity in the Zhubei HSR special zone can fulfill the future water demand. In addition, improvement plans of the network capacity were formulated and analyzed when it is necessary. The water demands in the study area are the basis of the water distribution network planning. Relevant data were collected and statistically analyzed and the results were then used to estimate various water demands. In this study, the number of water users was the baseline for the water demands estimation. An exponential curve method was used to estimate the population in the target year by referencing the report, Population Projections for R.O.C (Taiwan): 2010-2060 published by the Council for Economic Planning and Development (CEPD), Executive Yuan. The population was then used to forecast the increase of target domestic water demand. The final water demands were obtain by adding the estimations with other water requirement based on the land use characteristics. This study also considered the water demands variation caused by residents’ living habits. Therefore, in addition to the previously daily averaged water demands, other water requirements, such as the daily maximum, hourly maximum and hourly minimum, were also considered and investigated. The network simulation studies were examined by the construction and planning standards proposed by the Taiwan Water Corporation, and the network nodes pressure and pipelines flow velocity were the major items to validate. When the nodes pressure or pipes flow velocity were over the standards in the target year, improvement plans by adding valves or increasing pipes capacity were suggested and analyzed to maintain a stable water supply throughout the overall pipe system. The improvement plans suggested in this study can provide a valuable reference for the future water distribution system improvement and management in the Zhubei City HSR special zone.