礫石樁-都會區保水措施之新工法
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- 英文论文题名：Gravel Pile-A new measure on water resources conservation in urban area
- 论文作者：許少華 ; 張俼瑍 ; 洪碧芳
- 英文论文作者：Shao Hua Marko Hsu ; Yu-Huan Chang ; Pi-Fang Hung ; Department of water resource engineering and conservation ; Fung Chia University ; Department of Finance ; Overseas Chinese University
- 年：2015
- 作者机构：逢甲大學水利工程與資源保育學系;僑光科技大學財務金融學系;
- 论文关键词：低衝擊開發 ; 入滲 ; 植生滯留池 ; 礫石樁
- 英文论文关键词：Infiltration ; Detention ; Gravel pile ; SWMM Model
- 会议召开时间：2015-09-01
- 会议录名称：2015海峡两岸水土保持学术研讨会论文集（上）
- 英文会议录名称：Proceedings of Cross-strait Symposium on Soil and Water Conservation 2015
- 语种：中文
- 分类号：TU985.12;TV213.9
- 学会代码：OGSJ
- 会议名称：2015海峡两岸水土保持学术研讨会
- 会议地点：中国山西太原
- 主办单位：中国水土保持学会、台湾中华水土保持学会
- 学会名称：中国水土保持学会
- 页数：8
- 文件大小：4738k
- 原文格式：O
- 会议级别：全国
摘要
近年台灣都會地區快速發展,使不透水地表面積增加,加上大量抽取地下水降低局部地下水水位,以興建建築基礎,皆是造成都會區地下水位下降之原因。因此,都市保水必須採取更多元的策略與手段,以因應此一趨勢所造成的挑戰。近年來,低衝擊開發(Low Impact Development)的觀念逐漸受到重視,國際間常採用低衝擊開發之入滲工法為都市防洪的一種新興手段,常見的低衝擊開發措施,多是利用原不透水區域,以入滲方式削減地表逕流,以小單元分散式之連結發揮最大之功效,以回復該區塊之原始水文循環狀態為目標,亦可成為都會區保水措施。本研究是以台中市卵礫石地層為研究對象,以辦公大樓旁之空地,設置一植生滯留池並加入礫石樁,利用礫石樁之高滲透性,將自大樓屋頂收集之降雨逕流,快速導入含水層中,進而補注地下水。經以人為注水試驗結果,顯示植生滯留池於設置礫石樁後,入滲率可提升約10倍,而觀測自然降雨事件,入滲率提升則更加顯著。以SWMM評估植生滯留池設置前後之功效,植生滯留池設置後,於5年重現期距降雨事件下,可增加86%出流體積削減,可減少5%洪峰流量。
Due to climate change,extreme rainfall and typhoon events occur more and more frequently in the recent years.For urban area,risk of flooding increases due to fast development with increasing non-pervious surface and highly concentrated population.The purposes of the installed facilities are to enhance infiltration capacity of the ground-surface during rainfall events and reduce surface runoff such that the risk of flood can be reduced.The benefits of flood reduction can be estimated which also gives multiple options for strategies in urban flooding reduction.The infiltrated water can at the same time recharge the groundwater aquifer such that water resources in urban area can be restored.This is a win-win situation.
Due to climate change,extreme rainfall and typhoon events occur more and more frequently in the recent years.For urban area,risk of flooding increases due to fast development with increasing non-pervious surface and highly concentrated population.The purposes of the installed facilities are to enhance infiltration capacity of the ground-surface during rainfall events and reduce surface runoff such that the risk of flood can be reduced.The benefits of flood reduction can be estimated which also gives multiple options for strategies in urban flooding reduction.The infiltrated water can at the same time recharge the groundwater aquifer such that water resources in urban area can be restored.This is a win-win situation.
引文
[1]Ayers Emily,(2011),"Leature Notes LID 101 Why Consider Green Infrastructure?"
[2]Louise Ellis and Chris Ellis,2014."Using retro-fit green infradtmcture to reduce pollution and flooding in Llanelli and Gowerton,South Wales.",Hydrolink,(2)pp.50-53.
[3]臺中市政府水利局(2014),「臺中市大里區仁化工業區滯洪池礫石樁排水可行性評估」,臺中市政府水利局。
[4]林郁汶(2013),「以SWMM模式評估花槽減緩地表逕流之效益」,逢甲大學水利工程與資源保育學系碩士論文。
[5]經濟部水利署水利規劃試驗所(2014),「都會區地下含水層滯洪效益研究(2/3)」,水利規劃試驗所。
[2]Louise Ellis and Chris Ellis,2014."Using retro-fit green infradtmcture to reduce pollution and flooding in Llanelli and Gowerton,South Wales.",Hydrolink,(2)pp.50-53.
[3]臺中市政府水利局(2014),「臺中市大里區仁化工業區滯洪池礫石樁排水可行性評估」,臺中市政府水利局。
[4]林郁汶(2013),「以SWMM模式評估花槽減緩地表逕流之效益」,逢甲大學水利工程與資源保育學系碩士論文。
[5]經濟部水利署水利規劃試驗所(2014),「都會區地下含水層滯洪效益研究(2/3)」,水利規劃試驗所。