Study on exploration and evaluation technology system of urban underground space resources

The exploitation and utilization of urban underground space resources (UUSR) have played a key role in urban high-quality development. The viewpoint of establishing the technical system of exploration and evaluation of UUSR is put forward based on the analyses on the current research situation and main problems emerged from both fine exploration and resource evaluation. Breaking through the traditional concept of geological work, the study takes the urban aboveground, ground space and the underground within a certain depth as a whole, and divides the full factors of UUSR into whole space geographic element information, full-function structure element information and full-element geological information from multi-dimensional, multi-scale and multi-media space. The database of each information above could be established through spatial geographic mapping, drilling, geophysical exploration, hyperspectral core scanning, testing and three-dimensional dynamic modeling technology. The evaluation on collaborative development of urban underground geological resources and the intensity threshold evaluation on layered development of urban underground space functions could be operated based on the evaluations of UUSR elements and the elements' importance. The technical system of full factors classification-full factors exploration-whole information integration-whole resources evaluation proposed in this paper can provide support for the whole life cycle of UUSR development and utilization.