Suitability evaluation of geological conditions for underground space exploitation and utilization in Jinpu New Area of Dalian based on AHP

The suitability evaluation of geological conditions for the exploitation and utilization of underground space is an important basis for the preparation of territorial spatial planning.By studying Jinpu New Area geology environment background conditions, 17 evaluation indexes fall into 5 categories, based on the analytic hierarchy process and multi-objective linear weighting function model of the geological conditions of suitability evaluation method system of underground space and the Jinpu district shallow(0~15 m), sub-deep(15~30 m), deep(30~50 m) underground space for the development and utilization of geological conditions of suitability evaluation.The results show that the total area of worst and poor area in shallow underground space in Jinpu New Area accounts for 16.10% of the whole area.The main geological environment problems are goaf, karst development, water-rich aquifer and terrain fragmentation.The total area of worst and poor areas in sub-deep and deep underground space accounts for 12.80% and 12.56% of the total area, respectively.The main geological environment problems are goaf, karst development and water-rich aquifer.