【摘要】 城市地质环境的诸多脆弱敏感因素成为地下空间开发的关键制约条件。对苏州地下空间开发的关键地质环境要素进行评价,对于指导城市地质调查及地下工程建设具有重要的现实价值。以地形地貌、建筑场地类别、不良岩土体条件、水文地质特征、地震地质灾害等5个方面为评价的主题层,运用层次分析法(AHP)、专家调查法确定各指标因素的权重,基于目标线性加权函数建立评估模型,并对评估结果进行分级统计。由于地质环境要素具有空间变异性,故本研究对苏州地下空间开发深度的浅层(0～15m)、次浅层(15～30m)分别进行评价。结果表明:西部基岩山区(除去地质灾害发育区)地下空间开发的地质环境状况最好;东部平原区湖泊水系发育,软土层分布较厚,水文地质条件复杂,地下空间开发的地质环境状况相对较差。更多还原

【Abstract】 Identification of the key geo-environmental constraining factors on underground space,as well as the evaluation on geo-environment is very important to unban geological survey and underground construction in Suzhou.In this study,topography,types of construction sites,unfavorable geotechnical conditions,hydro-geological characteristics and earthquake geological hazards are considered as the main indexes of thematic layer in geo-environmental evaluation.Furthermore,both the Analytical Hierarchy Process(AHP)and expert questionnaires survey methods are utilized to calculate the weights of evaluation indexes.At last,the mathematical evaluation model is established by massive aim linear weight function method and the evaluation results can be statistic in classified levels.Due to the existence of spatial variability of geo-environmental factors,the underground space exploration from the depth of 0-15m and 15-30m are respectively evaluated.It is indicated from the comprehensive evaluation result that: bedrock mountain area in the west is suitable for underground exploration,but it does not include the area where serious geological disasters frequently take place.In contrast,there is a relatively low quality in the eastern plain area,because there is a wide distribution of water system,lakes,rivers,thick soft soil and complex hydro-geological conditions.更多还原