| 三维地质建模及其在城市地下空间规划中的应用 |
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| 关键词:3D geological modelling urban underground space planning geological suitability evaluation 3D stratigraphic structures key geological layers |
| 基金项目:北京市自然科学基金青年项目(编号: 8234062) |
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| 3D Geological Modelling and Its Application in Urban Underground Space Planning |
| Urbanisation has led to an increasingly acute conflict between supply and demand for urban construction land. The development and utilisation of urban underground space (UUS) have emerged as a pivotal strategy for addressing urban challenges, enhancing urban resilience, and creating a low-carbon society. The direct carrier of underground space is the geological environment, and given its inherent three-dimensional (3D) spatial attributes, 3D geological modelling is essential for urban subsurface, especially for urban underground space planning (UUSP). UUSP is not limited to the 2D level but is a 3D control covering both vertical depth and horizontal extent, aligning with the concept of 3D geology. However, the current application of 3D geological modelling in UUSP remains unclear. In this study, an area in Beijing City was selected to construct a 3D geological model of the shallow underground space; 1 041 engineering boreholes and 34 cross-sections were utilised for data collection and data analysis combined with 3D modelling technology. The specific application of 3D geological modelling in UUSP was then discussed from three aspects: 3D stratigraphic structures, key geological layers, and the combination with evaluation results. By integrating a 3D geological model with geological suitability assessment results, geological support was provided for UUSP in the study area from the perspectives of vertical depth and horizontal extent. These findings provide a reference for future regional-level underground space planning in Beijing. |
| HE Hanhan,ZHOU Yuanxin,HE Jing,HAN Zhongpeng,ZHAO Yiting,LIU Jing,LI Chao,HAN Zijin,XIAO Wei.2025.3D Geological Modelling and Its Application in Urban Underground Space Planning[J].Acta Geoscientica Sinica,46(2):456-470. |
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