Layout Optimization of Urban Underground Pipeline Based on 3d Digital City

With the fast development and utilization of underground space resource in cities, the spatial distribution of urban underground pipelines becomes more and more complex. How to efficiently utilize the latest technology, realize underground space resources' management, visualization, layout optimization and mine applications, are challenging issues in current digital city development. Taking into account of the frequently changing and complicated information of underground pipeline, we are facing great difficulty in data management. With the comprehensive integration management requirement of 3D digital city and underground pipeline system, we present layout optimization based on three-dimensional (3D) digital city. The objective of this paper is to describe design and implementation of underground pipeline 3D visualization and layout optimization based on 3D digital city. Firstly, the automatic conversion from two-dimensional (2D) pipeline data to 3D model is realized and we also integrates management with ground data, such as 3D house, 3D model, DEM, vector data, RS image, etc. which can quickly determine the relative positions of underground pipelines in a more intuitive way. Secondly, in accordance with related national standards, and the ensured accuracy and validity of pipeline data, an underground pipeline layout optimization method is realized, which is on the basis of spatial analysis and principle expanding. It analyzes the pipeline boundary layout in order to guarantee the distribution rationality; also it can ensure optimization of the pipeline layout. Finally, take the data of a city for example, an underground 3D pipeline optimization system based on 3D digital city is developed, which is according to the overall architecture and optimization method. It offers a set of techniques for the pipeline layout optimization and simulation, and provides decision support for urban underground resources management, pipeline planning, and urban planning, etc.  Corresponding Author: Jinxing Hu; [email protected]; phone 86-755-86392373