Numerical Study of Surface Subsidence and Overlying Strata Movement
乔明 QIAO Ming
（中国铁建港航局集团有限公司，珠海 519000）
（CRCC Harbour & Channel Engineering Bureau Group Co.，Ltd.，Zhuhai 519000，China）
摘要：为保证地面建筑物以及地下资源开采的安全，对采空区引起的上覆岩层移断规律以及地表沉陷情况进行研究。以应城市一工程为研究对象，基于 FLAC3D 数值模型分析和理论模型分析，建立采空区沉陷模型。通过 FLAC3D 构建模型分析地表沉降情况和上覆岩层移动规律等，得到该区域地表最大沉降 29.2cm、采空区顶板岩层移动变形量 46.04cm，分析总结了采空区上覆岩层移动呈梯形向马鞍形转变规律，为地表沉陷预测提供依据，可为类似工程提供参考意义。
Abstract: In order to ensure the safety of ground buildings and underground resources exploitation, the overlying strata displacements and surface subsidence caused by goaf are studied. Based on FLAC3D numerical model analysis and theoretical model analysis, a gob subsidence model is established by taking Yingcheng No.1 Project as the research object. FLAC3D was used to build a model to analyze the surface settlement and the movement law of overlying strata, etc. The maximum surface settlement in this region was 29.2cm, and the movement deformation of the roof strata in the goaf was 46.04cm. The transformation law of the movement of overlying strata in the goaf was analyzed and summarized, which provided a basis for the prediction of surface subsidence and could provide reference significance for similar projects.
关键词：采空区；FLAC3D 数值模拟；地表沉降；顶板岩层移动变形；移运规律
Key words: gob area；FLAC3D numerical simulation；land surface settlement；roof strata movement deformation；transport law
中图分类号：TU434 文献标识码：A 文章编号：1006-4311（2024）28-063-04 doi:10.3969/j.issn.1006-4311.2024.28.019
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