地下水入滲補注試驗-以大潮州地下水補注調節池為例

The Experiment of Infiltration Recharge of Groundwater - Case for Great Chaozhou Lake Regulation Basin

童士哲(Shih-Jhe Tong)

指導教授 ： 丁澈士

國立屏東科技大學/工學院/土木工程系所/碩士(2015年)

https://doi.org/10.6346/NPUST.2015.00279

摘要

本研究為對大潮州地下水人工補注湖之調節池進行地下水補注入滲影響試驗。因應於林邊溪固有枯豐水季分明之特性，降雨集中於每年5至10月之豐水季，占全年總流量97%，而枯水季期間之流量僅為3%。由於此種特性進而造成枯水期間人工湖區呈現乾固狀態，又因當地氣候影響，導致湖區內於枯水期間繁衍出大片植被覆蓋，本研究保留調節池內之植被直接進行入滲試驗，分析各種可能影響造成調節池入滲堵塞之影響因子，探討該調節池是否仍能有效補注地下水資源；本試驗分為二項研究方法，一為調查分析本研究場址之各項數據並引用前人研究推導出該調節池之入滲速率，二為以現地試驗方式保留當地自然生長之植被，並直接進行人工入滲補注試驗，以此探討植生覆蓋對入滲速率之影響程度。
研究方法一，以航拍攝影測量技術得知整體調節池面積，並調查池底及周圍植生狀況及植生覆蓋比例，以前人研究的成果套入現地之數據，可以推算出本調節池入滲速率約為5.36m/day。研究方法二，首先進行前置作業，於各出入水口標設水尺點位以及放置水位計。之後開始進行入滲試驗，引水進入調節池，藉由單位時間內水體變化量與尺水位升降及比對湖面投影面積來推估湖底水分入滲速率，最後將調查試驗後三天地下水位是否有抬升現象；經試驗成果顯示，該調節池引水期間入滲速率約為14.43 m/day，停止蓄水後之入滲速率為3.99 m/day，總平均入滲速率為6.09 m/day，與研究方法一推導出之結果差異性不大。

關鍵字

大潮州人工湖 ； 調節池 ； 入滲補注試驗 ； 入滲速率 ； 林邊溪

並列摘要

The Great Chaozhou Lake is used as an experiment study example to get insight into groundwater recharge infiltration on clogging issues in this study. In terms of this obvious feature about dry season and wet season of Linbien River, rainfall occurs regularly in the wet season of May to October each year with 97% of total rainfall. Rainfall in the remaining six months amounts to only about 3% of the total. The impact of these features cause by the dry state of the artificial basin during dry season, and was caused by the local climate conditions as well, leading to grow out of large vegetation in this season at the surface of the artificial basin. This study is to reserve the vegetation inside of Regulation Basin and to begin directly the infiltration experiments, and then to analyze each possible cause by the vegetation mulch at the Regulation Basin, still being effective supplement groundwater resources. The experiment is divided into two cases of research methods, the first case is to investigate and analyze the data in this study sites and citations then derive infiltration velocity of the Regulation Basin. The second method is to take experiments in the experiment field, to retain the natural growth of the local vegetation, and direct artificial recharge infiltration test, in this way to explore the influence of vegetation coverage and mulch for the infiltration velocity.
From the first research methods, the bottom and surrounding vegetation types and vegetation cover ratio by areal survey instrument with the results of cited research in this field, the infiltration velocity is calculated about 5.36 m / day of Regulation Basin. The second research methods, the first step set up the water level marks for pre-operation running and water level gauge at the outlet and inlet. The following step is the infiltration experiments, import storm water into the basin. The water storage changes of basin and water level fluctuation over time, and then follows the projected surface area of the basin to estimate infiltration velocity of the basin, and finally investigate the phenomenon of decline from groundwater level in three days after the test. From the results, the infiltration velocity is about 14.43 m / day during imported water periods. The infiltration velocity about 3.99 m / day after water stop running into basin. The average infiltration velocity of 6.09 m / day of total, compared with the first research method result is quite similar capacity.

並列關鍵字

Great Chaozhou Lake ； Regulation Basin ； Recharge Infiltration Tests ； Infiltration rate ； Woodside Creek

參考文獻

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