2019, 11(2): 116-121. doi: 10.16670/j.cnki.cn11-5823/tu.2019.02.20
基于潜势场理论的三维复杂地质模型参数精细化建模与分析
1. | 上海工程技术大学城市轨道交通学院,上海 201620 |
2. | 上海同隧信息科技有限公司,上海 200433 |
3. | 同济大学土木工程学院,上海 200092 |
Refined Modeling and Parameters Analysis of 3D Complex Geological Model Based on Potential Field Theory
1. | College of Urban Railway Transportation, Shanghai University of Engineering and Science, Shanghai 201620, China |
2. | Shanghai Tong Tunnel Information Technology Co., Ltd., Shanghai 200433, China |
3. | College of Civil Engineering, Tongji University, Shanghai 200092, China |
引用本文: 张美玲, 李培楠, 石来, 刘陕南, 吴俊. 基于潜势场理论的三维复杂地质模型参数精细化建模与分析[J]. 土木建筑工程信息技术, 2019, 11(2): 116-121. doi: 10.16670/j.cnki.cn11-5823/tu.2019.02.20
Citation: Zhang Meiling, Li Peinan, Shi Lai, Liu Shannan, Wu Jun. Refined Modeling and Parameters Analysis of 3D Complex Geological Model Based on Potential Field Theory[J]. Journal of Information Technologyin Civil Engineering and Architecture, 2019, 11(2): 116-121. doi: 10.16670/j.cnki.cn11-5823/tu.2019.02.20
摘要:由于实际工程中可获得的地质资料有限,而地层关系复杂,传统的地质建模方法进行区域地质体建模精度可能不足,无法满足工程需求;而潜势场理论通过集成地层界面接触数据和方向数据,并利用协克里金方法进行梯度场插值,使得地质模型具有较高的准确度,更符合实际地层结构。本文基于潜势场理论,以南京地铁5号线某区间工程钻孔数据为主要数据源,经过模型尺寸分析、地层合并及土层接触关系分析等步骤,建立了精细化的三维地质模型;并对地铁穿越的关键土层③-1b1-2层压缩模量的空间分布特征通过属性建模进行了精细化分析。结果显示基于潜势场理论的三维地质建模方法对于复杂地质条件建模具有明显的优势,对关键土层参数的空间分布规律进行精细化分析有利于指导工程设计与施工。
Abstract: Due to the limited geological data and the complex stratigraphic relationship in actual project, the accuracy of traditional geological modeling methods could not meet the engineering requirements in precision. Potential field theory integrates contact data and direction data of stratum interface and interpolates gradient field by co-Kriging method, which makes the geological model more accurate and more in line with the actual stratum structure. Based on the potential field theory, and taking borehole data of a section of Nanjing Metro Line 5 as the main data source, this paper established a refined three-dimensional geological model through some steps of model size analysis, stratum merging, soil contact analysis, and etc. A refined analysis is also conducted on the spatial distribution characteristics of compression modulus of the key soil layer③-1b1-2 crossed by metro line. The results show that there are obvious advantages existed in the three-dimensional geological modeling method based on potential field theoryfor the modeling of complex geological conditions. The refined analysis of the spatial distribution of key soil parameters is of great significance for guiding engineering design and construction.
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