考虑地质因素的城市地下空间开发价值分异特征及评估方法研究——以海口市江东新区为例

Value Differentiation Characteristics and Evaluation Methods of Urban Underground Space Development Considering Geological Factors—Taking Jiangdong New District of Haikou City as an Example

合理评估城市地下空间的综合经济价值是地下空间基准地价评估的基础。以海口市江东新区为例,将地表经济因素对地下空间开发价值的收益性影响与地下空间地质要素对地下空间开发价值的成本性影响相结合,从地下空间开发的收益与成本两个角度出发,采用层次分析法分别构建影响地下空间开发收益和成本的评价指标体系,并利用三维建模软件构建影响收益指标和成本指标的空间分异模型,分别计算地下空间开发的收益等级和成本等级,最后计算分层状态下地下空间的综合经济价值等级,并分析地下空间开发利用综合经济价值的空间分异特征。该研究结果可为城市地下空间基准地价评估提供定性参考。

Reasonable evaluation of the comprehensive economic value of underground space is the basis of evaluating the benchmark land price of underground space.Taking Jiangdong new area of Haikou City as an example,this paper combines the impact of surface economic elements on the development value of under-ground space with the impact of geological conditions of underground space on the development cost of un-derground space.From the perspective of income and cost of underground space development,through the analytic hierarchy process,the paper constructs the index system affecting income and cost,and establishes the evaluation model,The three-dimensional modeling software is used to construct the spatial differentia-tion model affecting the income index and cost index,calculate the income grade model and cost grade mo-del of underground space development,and finally calculate the comprehensive value grade of each layer of underground space in the layered state and analyze the spatial differentiation characteristics of the compre-hensive economic value of underground space development.The paper discusses the technical methods of underground space asset evaluation,so as to provide qualitative reference for the benchmark land price eva-luation of urban underground space.