發(fā)布時(shí)間：2018-04-02 17:19

  本文選題：潮灘　切入點(diǎn)：潮溝　出處：《水科學(xué)進(jìn)展》2017年01期

【摘要】：為研究潮溝發(fā)育演變動力機(jī)制,建立了以江蘇中部粉砂淤泥質(zhì)潮灘-潮溝系統(tǒng)為原型的降比尺物理模型,模擬在潮汐作用下,潮溝系統(tǒng)從平坦灘面逐漸形成、發(fā)育演變至動態(tài)平衡狀態(tài)的過程,并分析了潮溝系統(tǒng)在不同階段的形態(tài)特征。研究結(jié)果表明:潮溝系統(tǒng)發(fā)育速率先快后慢,最終達(dá)到動態(tài)平衡狀態(tài)。采用潮溝發(fā)育各階段潮溝系統(tǒng)的總長度與終態(tài)潮溝總長度的比值以及潮溝及其相鄰處潮灘的高程變化速率兩種方法,均可以衡量潮溝系統(tǒng)的發(fā)育程度。潮溝系統(tǒng)發(fā)育達(dá)到動態(tài)平衡后,各級潮溝個(gè)數(shù)占潮溝總數(shù)量的比例基本固定。潮溝的寬度、深度、寬深比均符合對數(shù)正態(tài)分布。潮溝的寬度與寬深比、深度與寬深比之間均具有冪函數(shù)關(guān)系。
[Abstract]:In order to study the dynamic mechanism of tidal channel development and evolution, a scale scale physical model based on silty silty tidal flat tidal channel system in central Jiangsu Province was established. It was simulated that the tidal channel system was gradually formed from flat beach surface under tidal action.The process of development to dynamic equilibrium state and the morphological characteristics of tidal trench system at different stages were analyzed.The results showed that the development rate of tidal trench was first fast and then slow, and finally reached the state of dynamic equilibrium.The development of tidal trench system can be measured by using the ratio of total length of tidal channel system to the total length of terminal tidal channel and the rate of elevation change of tidal channel and its adjacent tidal flat in each stage of tidal channel development.The ratio of the number of tidal trenches to the total number of tidal trenches is basically fixed after the development of tidal trench system reaches dynamic equilibrium.The width, depth and ratio of width to depth of the trench are in accordance with the logarithmic normal distribution.There is a power function relationship between width and width ratio, depth and width depth ratio.
【作者單位】： 河海大學(xué)水文水資源與水利工程科學(xué)國家重點(diǎn)試驗(yàn)室;河海大學(xué)江蘇省海岸海洋資源開發(fā)與環(huán)境安全重點(diǎn)試驗(yàn)室;中交水運(yùn)規(guī)劃設(shè)計(jì)院有限公司;School
【基金】：國家自然科學(xué)基金資助項(xiàng)目(51379003) 中央高�；究蒲袠I(yè)務(wù)費(fèi)專項(xiàng)資金資助項(xiàng)目(2015B15814)~~
【分類號】：P737.1

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