本文選題：連通性　切入點：圖論　出處：《水利水運工程學(xué)報》2017年04期 　論文類型：期刊論文

【摘要】：河湖水系連通是流域及區(qū)域防洪、供水和水生態(tài)安全的重要基礎(chǔ)。現(xiàn)有的基于水流阻力與圖論的水系連通性評價方法并不適用于連通性受閘門工程調(diào)度影響較大的平原河網(wǎng)區(qū),為此提出了改進的水系連通性評價方法,不僅考慮河網(wǎng)中不同類型河道的實際輸水能力,還考慮了閘門啟閉的開啟度。以太湖流域平原河網(wǎng)區(qū)為例,運用太湖流域水量水質(zhì)模型中的概化河網(wǎng)繪制河網(wǎng)圖,結(jié)合模型計算出各河道水位及閘門開啟度,構(gòu)建出加權(quán)鄰邊矩陣,并利用MATLAB編程算出每個節(jié)點連通性,進行了平原河網(wǎng)區(qū)典型年時河網(wǎng)水系連通性評價�？傮w評價結(jié)論為太湖流域平原區(qū)總體水系連通性較高,但各水利分區(qū)的連通性有一定差異,其中陽澄淀泖區(qū)和太湖區(qū)水系連通性較高。評價結(jié)論符合太湖流域平原河網(wǎng)區(qū)的實際情況,和前期研究方法的結(jié)論基本一致。該方法實現(xiàn)了受閘門調(diào)度影響較大河網(wǎng)水系的連通性定量化評價,可用于河網(wǎng)水系連通性變化評估、改善水系連通工程設(shè)計等領(lǐng)域。
[Abstract]:The connectivity of rivers and lakes is an important basis for flood control, water supply and ecological safety of river basins and regions. The existing methods based on water flow resistance and graph theory are not suitable for evaluating the connectivity of river systems in plain river networks where connectivity is greatly affected by gate engineering regulation. In this paper, an improved method for evaluating the connectivity of river system is proposed, which not only takes into account the actual water conveyance capacity of different types of river channels in the river network, but also considers the opening degree of the gate opening and closing. Taking the plain river network area of the Taihu River Basin as an example, Using the generalized river network in the water quality model of Taihu Lake Basin to draw the river network map, combining with the model to calculate the water level of each channel and the opening degree of the gate, to construct the weighted adjacent edge matrix, and to calculate the connectivity of each node by using MATLAB programming. The connectivity evaluation of river network in typical years in plain river network area is carried out. The overall evaluation conclusion is that the total water system connectivity in plain area of Taihu Lake basin is relatively high, but the connectivity of each water conservancy zoning is different to a certain extent. The water system connectivity between Yangcheng and Taihu areas is relatively high. The evaluation results accord with the actual situation of plain river network in Taihu Lake basin. This method can be used to evaluate the connectivity of river network which is affected by gate dispatching. It can be used to evaluate the connectivity of river network and improve the design of river system connectivity.
【作者單位】： 太湖流域管理局水利發(fā)展研究中心;
【基金】：水利部公益性行業(yè)科研專項經(jīng)費項目“太湖流域綜合調(diào)度及河湖有序流動技術(shù)研究”(201501015)
【分類號】：TV213.4

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