Application of Survey Big Data in Underground Space Evaluation

From solving urban problems to improving urban competitiveness, the intensive and compound utilization of underground space resources has been regarded as a standard paradigm to support the sustainable development of urban modernization. As a super city, Chongqing is seriously short of land space due to the limitation of mountainous conditions, leading to strong demand for the development and utilization of underground space. However, the "data short board", caused by the lack of underground space data and information, affects the suitability and safety evaluation of the development and utilization of underground space. Taking Yuzhong as the research area, survey big data such as surveying data, geological exploration data, urban 3D model and underground space model, uses2D and 3D GIS analysis, finite element method etc. are integrated to carry out the suitability evaluation and safety analysis for underground space development by fully use of information means. Finally, taking the route selection of a track project as an example, the demonstration application is carried out by using the evaluation results.