bed widening 中文意思是什麼
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Darby, s. e., and thorne, c. r. numerical simulation of widening and bed deformation of straight sand - bed rivers ii : model evaluation, journal of hydraulic engineeting, vol. 122, no. 4, 1996, p194 202
王新宏。沖積河道縱向沖淤和橫向變形數值模擬研究及應用。西安理工大學博士論文， 2000年。 -
Test results show that spur dikes aligned along a single bank in the deep water zone have more effects on the adjustment of the bed topography of the wide - shallow river than in the shallow water zone ; alignment of spur dikes along both banks can effectively adjust the planimetric position of deep - water zone ; and a reasonable widening rate of the regulation line in the estuary can readjust the variation of the average water depth along the river
試驗結果表明，在深水區的單側丁壩群對寬淺河床地形的調整作用大於淺水區；雙側丁壩群的聯合作用能調整深水區的平面位置；合理地選擇治導線的放寬率，能有效地調整深槽平均水深的沿程變化。 -
By use of the morphological coefficients of estuarine riverbed and the relevant data of the north channel of the yangtze river estuary, the widening rate of the regulation line of the north deep - water channel of the yangtze river estuary is calculated, and the calculation result is in agreement with that of the fixed bed model test
利用已有的河口河床形態系數及長江口北槽的有關數據，估算了長江口北槽深水航道治導線的放寬率，且與定床物理模型試驗值基本相符。
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