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城市地下空间的开发利用是城市可持续发展的必然途径。城市地下空间岩土体可利用性是指对城市地下空间岩土体的工程地质性质进行评价,综合考虑岩土体自身的物理力学性质、水文地质条件,以及地表以下不同深度处的工程种类对岩土体的质量需求。笔者分别探讨了长春市地下空间岩土体在地表以下0~3 m、3 m~15 m、15 m~30 m深度区域内的常见工程种类及岩土体分布特性,并分析了不同深度处的岩土体可利用性影响因素,根据粗糙集理论对长春市地下空间岩土体属性进行了重要性评估,得到具有客观性和可靠性的权重赋值,为长春市地下空间岩土体的可利用性评价奠定了基础。
The development and utilization of urban underground space is the inevitable way of urban sustainable development. The availability of rock and soil mass in urban underground space refers to the evaluation of geotechnical properties of rock and soil mass in urban underground space. Considering the physical and mechanical properties of rock and soil mass, hydrogeological conditions and the types of engineering at different depths below ground surface Rock mass quality needs. The author separately discusses the common engineering types and the characteristics of distribution of rock and soil in the underground space of Changchun City in the depth of 0 ~ 3 m, 3 m ~ 15 m and 15 m ~ 30 m below the surface and analyzes the influence of different depths According to the rough set theory, the importance of the geotechnical properties of underground space in Changchun City is evaluated, and the weight assignment with objectivity and reliability is obtained, which can be used to evaluate the geotechnical properties of underground space in Changchun Utilization evaluation laid the foundation.