地下工井电缆网络模型及拓扑关系构建

The construction of network model of underground cable working well and its topological relationship

针对城市地下管线结构复杂且信息量大,显示、管理与分析具有一定难度的问题,该文提出利用附属工井墙壁的管孔节点进行井内电缆及井间管道的连接,实现地下工井电缆网络的构建。该方法在建模方面,主要针对多种电缆进行数字化表达,突破管线电缆传统单一化的点线化建模方式,采用改进标架的Sweep算法对井内电缆进行抽象模拟或对其形状及走向进行实际模拟,使电缆具有多样性且在拐点处不出现扁平化;在拓扑关系构建方面,利用管孔节点来进行电缆与管道的连接。拓扑连接将部件化的电缆和管道元素整体化,实现了满足局部查询监测的庞大空间网络系统。在实际应用中,本方法为施工者及管理者监测井内实际情况、管理及查询城市地下管网提供支持。

Due to the complexity of the urban underground pipeline structure and the large amount of the information, it is difficult for the 3-dimensional display, management and analysis of pipelines, in this paper, the construction of cable network of underground well is realized by using pipe-hole node attached to the wall of the cable working well to carry out cable connection and pipe connection between cable working wells. This method is mainly used for digital representation of a variety of cables, which breaks through the traditional single-line modeling method of dotted line. This method uses sweep algorithm with the improved moving frame to abstract or simulate the shape and direction of the cable in the well, so that the cable has variety and does not appear flat at the inflection point. In the topological relation, the connection between the cable and the pipe is made by using the pipe-hole node. In the case of local query monitoring, the topological connection integrates the component cable piping elements to realize a large space network system. In practical applications. it is necessary for builders and managers to monitor the actual situation in the well, manage and inquire about the urban underground pipe network.