| 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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| 引用本文：何晗晗,周圆心,何静,韩中鹏,赵怡婷,刘晶,李超,韩子金,肖为.2025.三维地质建模及其在城市地下空间规划中的应用[J].地球学报,46(2):456-470. |
| DOI：10.3975/cagsb.2024.043001 |
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| 基金项目:北京市自然科学基金青年项目(编号: 8234062) |
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| 中文摘要:城市化进程使得城市建设用地的供需矛盾愈发尖锐, 开发利用地下空间成为提高城市韧性、创建低碳城市的关键策略。地下空间的直接载体为地质环境, 加之其自身的三维空间属性, 使得三维地质建模对地下空间尤其是城市地下空间规划具有重要意义。城市地下空间规划并非局限于二维层面, 而是涵盖竖向深度与平面范围的三维管控, 与三维地质的理念相通。尽管如此, 现阶段三维地质建模在城市地下空间规划中的应用尚待明确。本次以北京城区某地为研究区, 通过资料搜集、数据分析结合三维地质建模技术, 利用1 041个钻孔数据和34条标准化地层剖面, 创建了研究区浅部三维地质模型。从三维地层结构、关键地质层和集成评价分区三个方面, 探讨了三维地质建模在城市地下空间规划中的应用, 综合模型与地质适宜性评价成果, 从竖向深度和平面范围上为研究区地下空间规划提供了地质支撑, 也为后续区域层面的北京城市地下空间规划提供参考。 |
| 中文关键词:三维地质建模 城市地下空间规划 地质适宜性评价 三维地层结构 关键地质层 |
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| 3D Geological Modelling and Its Application in Urban Underground Space Planning |
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| Abstract: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. |
| keywords:3D geological modelling urban underground space planning geological suitability evaluation 3D stratigraphic structures key geological layers |
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