Acta Scientiarum Naturalium Universitatis Pekinensis

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Key Technologies of Prediction and Display of Deformation Field Induced by Underground Construction

TIAN Tian1, PAN Mao1, HAN Xuan2, CONG Weiqing1, ZHANG Fang2, ZHANG Jie3   

  1. 1. The Key Laboratory of Orogenic Belts and Crustal Evolution MOE, School of Earth and Space Sciences, Peking University, Beijing 100871; 2. BGI Engineering Consultants LTD, Beijing 100038; 3. College of Geoscience and Surveying Engineering, China University of Mining and Technology, Beijing 100083;
  • Received:2010-10-12 Online:2011-09-20 Published:2011-09-20

地下工程施工引起三维变形预测系统关键技术研究

田甜1,潘懋1,韩煊2,丛威青1,张芳2,张杰3   

  1. 1. 造山带与地壳演化教育部重点实验室, 北京大学地球与空间科学学院, 北京 100871; 2. 北京市勘察设计研究院有限公司, 北京 100038; 3. 中国矿业大学北京地球科学与测绘工程学院, 北京 100083;

Abstract: Basing on the “3D Engineering Investigation Information System”, a “3D Underground Construction Deformation Display System” is developed. Empirical methods were used to predict the deformation of strata and buildings in the system. 3D regular grid model and triangulated irregular network (TIN) model were used for the 3D deformation field visualization. For the TIN model, the adaptive TIN keep-geometry refinement algorithm were developed. This algorithm can depict the deformation field in higher resolution without remarkable data size increase. Therefore the modeling and analysis of very large areas become possible.

Key words: underground construction, ground subsidence, building deformation, empirical methods, 3D deformation field visualization

摘要: 基于“三维岩土工程勘察信息系统”开发了“地下工程施工引起地层位移和建筑物变形三维预测系统”。系统中采用经验法对地下工程施工引起的地层以及建筑物的变形进行预测, 采用三维规则格网模型以及不规则三角网模型来表达三维的变形场, 并采用自适应三角网加密算法对不规则三角网进行加密, 以满足在不增加数据量的前提条件下对变形场提供高精度的刻画, 从而满足了大范围区域建模分析的需求。

关键词: 地下工程施工, 地表沉降, 建筑物变形, 经验公式, 三维变形场可视化

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