固体充填开采地表沉陷数值模拟研究

Study on numerical simulation of surface subsidence in solid filling mining

应用FLAC3D软件建立了某矿区固体充填开采的三维数值模型,结合固体充填开采等效采厚的相关概念模拟了模型的开挖以及模型在开采后的移动变形情况。使用FLAC3D内嵌的FISH程序语言,编制了相关程序,提取出两种不同类型的地表移动观测站的沉陷数据。利用提取出的地表移动观测站沉陷数据,结合MATLAB强大的数据处理和可视化功能,对固体充填开采所产生的地表沉陷进行后处理与可视化操作。研究表明:固体充填开采可以有效控制地表沉陷,适用于村庄等建筑物下采煤的情况;运用FLAC3D并结合MATLAB的方法可以方便、准确的进行开采沉陷的数值模拟与可视化操作。

A three-dimensional numerical model of solid filling mining in some mining area has been estab-lished using the FLAC3D software, combined with solid filling mining related concepts of equivalent mining thickness to simulate the excavation of the model as well as the deformation of the model after mining. Using FLAC3D embedded FISH programming language, compiled the related procedures, to extract the two different types of surface movement observation data. Using extract the surface movement observation station’ s subsid-ence data, combined with MATLAB powerful data processing and visualization functions, the solid filling min-ing surface subsidence for post-processing and visual operation. Research shows that solid filling mining can effectively control the surface subsidence, which can be applied to coal mining under village or other build-ings. By using FLAC3D and MATLAB, it is convenient and accurate for mining subsidence numerical simula-tion and visualization of the operation.