Evaluation of Underground Space Quality for a Delta Coastal City

Underground space resource is an essential part of a delta coastal city. However, complicated underground geological structure and hydro-geological conditions result in different exploitation difficulty and potential disaster. The quality evaluation of underground space resource is significant for both sustainable urban planning and underground engineering. Shanghai was selected as a typical representative of delta coastal cities. A quality evaluation system frame was established, including evaluation index system, evaluation method. Fuzzy method was introduced to determine the grade of underground space quality. The Chenghuang Temple and Zhongshan Park planning units were used as evaluation examples, the quality of shallow, middle and deep underground space resources was evaluated. The evaluation system frame can provide reference for underground space resource evaluation for similar delta coastal cities.