水利水电技术（中英文）

河网连通性是满足区域水资源配置、蓄水与防洪减灾、生态保护修复与景观提升需求的重要条件。为了研究多闸坝平原-廊坊市河网水系连通状况,优化廊坊市河网水系连通布局。基于图论理论,考虑河道社会属性和水利工程对河网连通度的影响,以河道分级、分类、河道上闸坝的过流能力和河段长度为边的权值,建立河网的加权邻接矩阵,应用复杂网络分析方法,得到节点和河渠在河网中重要性,计算河网的连通度。本文以廊坊市北部为研究区域,通过对廊坊市北部河网水系连通度计算,结果显示:(1)廊坊市北部最为重要的节点分别为吴村闸枢纽、白庙橡胶坝,节点重要度为5.53、4.75,重要性最大主要河道为潮白河,最大的人工沟渠为群英总干渠,河渠的重要度分别为22.98、6.56;(2)廊坊市现状河网连通度0.113 6,通过对连通布局方案连通度的定量评价结果进行优选,方案四到方案十一的连通度在[0.085 3,0.126 4],其中方案十为最优,河网连通度为0.126 4。研究成果可为北部连通布局提供依据,同时也为整个廊坊市的总体布局提供技术支撑。

River network connectivity is a essential condition applied in satisfying the need of regional water resources allocation, water storage, flood control and disaster reduction, ecological protection and restoration and landscape enhancement. The objective is to study the connectivity of the river system and optimize the connectivity layout of the river system in Langfang City of the multiple-sluice-dam plain. Based on the graph theory, weighted adjacency matrix of river network is established by utilizing the river grading and classification accompanied by overflow capacity of upper gate dam and the length of river reach as the weights of the edge after considering the influence of river social attributes and water conservancy projects on the connectivity of river network. We obtain the importance of nodes and channels in river network and the connectivity of river network by using the complex network analysis method. In this paper we take the north of Langfang City as the research area, and calculate the weighted connectivity of the river network system in the north of Langfang City. The results demonstrate that:(1) The chief nodes in the north of Langfang are Wu Village Gate Junction and Baimiao Rubber Dam, with the node importance degree at 5.53 and 4.75. Chaobai River and Qunying Main Canal are regarded as the most critical main river and artificial ditch owing to their river importance degree at 22.98 and 6.56 respectively.(2) The connectivity of the current river network in Langfang is 0.113 6. Through the optimization quantitative evaluation results of the connected layout scheme, Scheme 4 to 11 with the connectivity degree ranging from 0.085 3 to 0.126 4, in which scheme 10 is the optimal and the connectivity degree is 0.126 4. The research results provide a basis for the connectivity layout of the north, and also serve a valid technical support for the overall layout of Langfang as a promising guidance.