水文學合理化公式 - 土木

By Bennie
at 2013-06-30T18:40
at 2013-06-30T18:40
Table of Contents
先附上連結 97年高三水資工 第三題
http://wwwc.moex.gov.tw/ExamQuesFiles/Question/097/019343200.pdf
想請問的是小題(一)中排水管2-1的流量是用Q=CIA算的
但是其中 I的集流時間究竟要不要加入管2-1的時間呢? 即7+4+4+4=19分鐘
有聽到的說法是算到人孔2就好(即15分鐘) 因為2-1的流量是從人孔2開始的
但我覺得流量也會在2-1管內流動 所以應該也要算進去
而且都最後一根排水管了不加白不加(誤XD)
請問哪個才是對的呢? 又應該如何解釋比較得當?
謝謝
--
Sent from my EM-7A
--
http://wwwc.moex.gov.tw/ExamQuesFiles/Question/097/019343200.pdf
想請問的是小題(一)中排水管2-1的流量是用Q=CIA算的
但是其中 I的集流時間究竟要不要加入管2-1的時間呢? 即7+4+4+4=19分鐘
有聽到的說法是算到人孔2就好(即15分鐘) 因為2-1的流量是從人孔2開始的
但我覺得流量也會在2-1管內流動 所以應該也要算進去
而且都最後一根排水管了不加白不加(誤XD)
請問哪個才是對的呢? 又應該如何解釋比較得當?
謝謝
--
Sent from my EM-7A
--
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土木
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