臺灣博碩士論文加值系統

本研究之目的在於測定整地工地因暴雨所沖刷之泥砂量，及逕流中
沉質去除效果之探討，以供做訂定沉砂池管理作業之參考。本研究係利用
人工降雨機於臺南市虎尾寮市地重劃區‵南二高臺南系統交流道，南二高
關廟段258K處及西濱快速道路北門段等四個工地進行現地沖刷試驗.
研究結果顯示實驗工地之坡度為1.25%~5.4%之間沉質(Sediment)流出負荷
年平均為57.7公頓/公頃，其中以南二高臺南系統交流道之年平均
為107.01公頓/公頃最高，虎尾寮C之11.62公頓/公頃最小?工地總氮輸出
負荷年平均為51.6公斤/公頃，總磷輸出負荷年平均值為0.38公斤/公頃。
而在沉質去除效果上,去除效率與逕流中沉質粒徑分佈及溢流率有關。本
文建議開挖整地一公頃需建造100平方公尺表面積之沉砂池,即佔集水面
積1%。

The study was conducted with the objective of estimating the
sediment yield of constraction active，and the removal of the
sediment in runoff when a storm occurs in order to design a
sediment basin. A rainfall simulator was used inthis study.Four
plots were selected for this research.There are including Tainan
city Huw Wai Lai，the Tainan ramp of the south second free way
of Kung Mung set and the west bay highway construction sites.
The result shows that the slop of these sites is 1.25% to 5.4%，
average slop is 3.1% and the annual average sediment yield is
57.7ton/ha，the annual TN export coefficient is average 51.6kg/
ha and TP is average 0.38kg/ha.The removal of sediment particle
distribution in runoff .When overflow rate raises（266cmd/m2），
the removal decreases（45%），but the removal increases（75%）
with overflowrate decreases（30cmd/m2）.According to this
research，the sediment basin needed 1% surface of the
construction site.