【摘要】 岩土参数是影响地下空间开发利用的重要因素,岩土参数不同,其重要性也不同,并影响城市地下空间开发 利用。依据粗糙集理论,提出利用不可分辨关系、属性集正域及知识依赖度判断岩土参数重要性的评估模型。结 合北京市CBD实例,研究基于粗糙集方法的城市地下空间开发利用岩土参数重要性及其权重,得到与传统层次分 析法(AHP)相一致但更精细的重要性评估结果,并在GeoMo3D系统中进行建模、评估及可视化比较,验证粗糙集方 法的合理性和优越性。更多还原

【Abstract】 The underground space is a kind of important natural resource for urban development,and the geotechnical parameters are important index for underground space development - utilization. The significance of each geotechnical parameter is different,and the feasibility of underground space development - utilization is thus affected. Based on rough sets theory, an evaluation model, in which the parameter’s significance is considered,is put forward by using of indiscernibility relation,attribute sets positive domain and dependence degree. Taking the central business district(CBD)of Beijing as an application case, the significance and weight of geotechnical parameter for underground space development - utilization are studied as compared to traditional method, analytic hierarchy process (AHP). It shows that the results from rough sets is in accordance with but more precise than that from AHP. Not only more attribute information could be mined out,but also the subjectivity problem on parameter significance evaluation can be solved by means of rough set method rather than AHP. The reasonability and advantages of rough sets method are proved through the 3D spatial modeling,data treatment,parameter evaluation and visualization comparison on CBD Beijing.更多还原