城市地下空间地质安全风险三维评价方法与实践

城市地下空间地质安全风险三维评价是合理进行地下空间立体化开发、降低开发地质风险的重要手段，但目前尚缺乏系统的研究，工作方法体系仍有待深入探讨。本文在前人工作基础上，对城市地下空间地质安全风险的类型、地质诱因与核心评价指标，以及传统二维评价的局限性进行归纳总结，并结合三维地质建模、三维评价指标体系以及三维空间分析等关键三维方法技术，提出了一套较为系统的城市地下空间地质安全风险三维评价技术方法体系。为验证方法的有效性，在南京市江北新区开展了城市地下空间地质安全风险三维评价实例研究，取得了较好的效果。研究显示该方法体系能够显著提升三维尺度下地下空间地质安全风险评价精度和准确性，为立体化地下空间开发提供有力支持。

3D evaluation method and practice of geological safety risk for urban underground space

Three-dimensional geology safety risk evaluation for urban underground space (UUS) is an important means to rationally carry out 3D development for UUS and reduce the geological risk. But there is still a lack of systematic research, and the workflow is still to be explored in depth. According to the previous work, this paper summarises the types of geological safety risks for UUS, geological triggers and core evaluation indexes, as well as the limitations of traditional 2D evaluation. Based on this, this paper proposes a workflow of 3D evaluation technology and methodology for geological safety risks for UUS by combining the key 3D technologies, such as 3D geological modeling, 3D evaluation index system and 3D spatial analysis methods. In order to verify the effectiveness of the workflow, this paper takes Jiangbei New District in Nanjing City as an example to carry out the 3D geological safety risk evaluation for UUS. The workflow shows a good result and is proved to be able to efficiently enhance precision and accuracy, providing strong support for 3D UUS development.