Evaluation on development potential of urban underground space resource: Multi-level extension comprehensive evaluation method

The priority task that underground space development faces is how to carry out scientific evaluation of underground space resources. In order to expand the methods for evaluating the developing potential of underground space of our cities, this paper takes the underground space of comprehensive transportation junction of Shapingba District of Chongqing as an example and adopts multilevel extensive comprehensive evaluation method based on the construction of underground space developing potential evaluation index system to evaluate the developing potential of city underground space. The research results have shown that multilevel extensive method could clearly obtain the grade of underground space developing potential. The results have generality and could better evaluate the underground space developing potential through plus or minus of the relational degree value of matter element to determine whether it has the degree of a certain property.