The Research Of Underground Buildings' Surveying And Mapping Technology

Currently, technology of underground buildings surveying and three-dimensional expression is a new research hotspots. Research on underground pipeline and stratum are getting more attention than surveying technology of underground buildings which has some similarities compared with three dimensional digital terrain map on the ground. However, there exists some space environment with a certain complexity and lack of normative constraints. Therefore, it is significant for us to develop the utilization of underground space effectively by studying on features of underground buildings and surveying technology. In this paper, we discuss the theory and application of underground buildings technologies and three-dimensional expression based on the classification and characteristics of underground buildings, surveying technology and spatial analysis. The main conclusions of this article are as follows:(1) For underground buildings, we introduce the significance and the problems needed to be solved, the features and classification, framework of information platform, technology of drawing and three-dimensional expression, spatial analysis and surveying methods;(2) We get a summary of the common ground buildings according to the more detailed classification of underground buildings;(3) We make a research on features and expression of three-dimensional data, get a summary of the surveying technologies and bring up ways to underground buildings with its features,(4) We have a study on the drawing technology and create a component which can carry out all experiments by ObjectARX.net based on AutoCAD.