雄安新区起步区地下空间资源开发利用地质适宜性及资源量评价

Evaluation on geological suitability and resource quantity for development and utilization of underground space in the start-up area of Xiong’an New Area

【研究目的】雄安新区作为千年大计、国家大事,开发利用地下空间资源可有效缓解“环境污染、资源短缺、交通拥堵”等“大城市病”问题,促进新区高质量发展。【研究方法】本文以雄安新区起步区为研究对象,通过层次分析法,分析了影响研究区地下空间资源开发利用的地质因素,建立了地下空间资源开发利用地质环境适宜性评价指标体系,评价了地下空间开发利用地质适宜性,并估算了地下空间可利用资源量。【研究结果】研究结果表明,研究区地下空间开发利用地质适宜性评价指标可划分为4大类10个指标,主要影响指标为含水砂层、地面沉降、液化砂土、水土腐蚀性等;按浅层、次深层和深层将评价结果划分为适宜区、一般区和敏感区,适宜区和一般区总面积约占起步区面积80%以上,资源量整体较好。【结论】该评价结果为起步区地下空间资源开发利用提供了参考,为起步区高质量建设及可持续发展提供了可靠的技术支撑;同时,地下空间资源开发利用具有不可逆性,易受地质环境因素影响,其开发利用必须因地制宜、合理规划、科学布局。

This paper is the research on the underground space evaluation.[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 influencing indexes are water-bearing sand layer,land subsidence,liquefied sand and corrosion of soil and water,etc.According to shallow,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 reliable technical support for the high-quality construction and sustainable development of the study area.At the same time,the development 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.