Evaluation on geological suitability and resource quantity for development and utilization of underground space in the start-up area of Xiong'an New Area
[Objective]As a grand project and a national event,the development and utilization of underground space resources in Xiong'an New Area can effectively alleviate"big city diseases",such as"environmental pollution,resource shortage and traffic congestion",and promote high-quality development of new city.[Methods]Taking the start-up area of Xiong'an New Area as the research area,this paper analyzes the geological factors that affect the development and utilization of underground space resources in the start-up area through analytic hierarchy process,establishes the evaluation index system of geological suitability,evaluates the geological suitability,and evaluates the quantity of available resources for development and utilization of underground space resources in the Start-up area.[Results]The results show that the evaluation indexes can be divided into 4 categories and 10 indexes.The main influ-encing indexes are water-bearing sand layer,land subsidence,liquefied sand and corrosion of soil and water,etc.According to shal-low,sub-deep and deep underground space,the suitability evaluation results are divided into suitable area,general suitable area and sensitive area.The total area both suitable area and general suitable area accounts for about 80%of the total area,indicating that the overall geological suitability is good for development and utilization of underground space in the Start-up area.[Conclusions]The results provide a reference for the development and utilization of underground space resources in the study area,and provide a reli-able technical support for the high-quality construction and sustainable development of the study area.At the same time,the develop-ment and utilization of underground space resources has irreversibility and is easily affected by geological environment factors,so its development and utilization must be adapted to local conditions,rational planning and scientific layout.
underground spacegeological suitabilityindex systemquantity of available resourceXiong'an New Area