苏州城市规划区地下空间开发适宜性评价

结合苏州城市规划区的地质环境特点,选取地形地貌、建筑场地类别、不良岩土体、水文条件、地质灾害等5个方面13个因子作为地下空间资源开发适宜性评价指标,运用层次分析法(AHP)确定各指标因子的权重,采用多目标线性加权函数建立评价数学模型,利用GIS叠加生成适宜性评价图。结果表明:西部基岩山区地质环境条件较好,适宜地下空间开发,东部平原区水系发育,软土层较厚,水文条件复杂,地下空间开发适宜性相对较差。

On development suitability appraisal of underground space in Suzhou urban planning zone

In combination with the geological and environmental characteristics in the urban planning zone in Suzhou, the authors se- lected five aspects （landforrns, site sorts, poor rock mass, hydrogeological conditions and geological disasters） and thirteen factors as evaluation index for development suitability of underground space resource, determined the weight of each index factor with analytic hi- erarchy process（AHP） , established appraisal mathematical model by adopting multi-objective linear weighting function, and formed suitability map by GIS superposition. It was concluded that the western bedrock areas were suitable for development of underground space owing to its fine geological and environmental conditions, the eastern flatlands were relatively poor in suitability of underground space development owing to their drainage development, thick layers of soft soils and complicated hydrological conditions.