3D Evaluation of Suitability of Underground Space Development in Core Areas of Mountainous Cities

Abstract:

In view of the special topography， geology， construction status and location value of underground space construction in the core area of mountainous cities， a basic unit of 3D fine evaluation is used to divide urban underground space， the analytic hierarchy process is used to determine the suitability evaluation factor system， and a sensitive factor-fuzzy-variable weight composite model is established as the evaluation calculation method. The three-dimensional evaluation of the suitability of underground space development in the core area of mountainous cities is realized， which can provide guidance and reference for the 3D planning of underground space development. Taking the Yuzhong Peninsula of Chongqing as an example， the 3D divisions of the suitability of the 0 to 150 m underground space and the changes in the proportion of depth-suitability divisions are obtained. In addition， a typical block is selected to verify the reliability of the evaluation method.

Key words:underground space development;core area of mountainous cities;suitability;3D evaluation;composite evaluation model