地下开采对地表影响的预测研究
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摘要
为了确保地表的稳定,采用有限差分程序FLAC~(3D)模拟二道河矿体开采对地表的影响,计算了矿体开采过程中地表及建筑物的变形量,并参照我国评判建筑物破坏等级的标准进行评判。模拟结果表明:岩层移动是一个自下而上传递的动态过程,二道河地表倾斜变形和水平变形均处于Ⅰ级保护等级范围内,说明地表处于稳定状态。研究成果为二道河铁矿采矿工艺的确定提供了理论依据。
To ensure the surface safety during underground mining,FLAC was used to simulate the influence of underground mining on ground surface in Erdaohe Iron Mine,and the deformation of buildings and surface was calculated and evaluated by national judgment standard of building damage grade.The simulation results show that strata movement is a dynamic transferring process from bottom to top,and surface inclines and horizontal deformation are in grade I protection level which means that the ground surface is stable.The study results provided theoretical basis for the mining process determination of Erdaohe Iron Mine.
To ensure the surface safety during underground mining,FLAC was used to simulate the influence of underground mining on ground surface in Erdaohe Iron Mine,and the deformation of buildings and surface was calculated and evaluated by national judgment standard of building damage grade.The simulation results show that strata movement is a dynamic transferring process from bottom to top,and surface inclines and horizontal deformation are in grade I protection level which means that the ground surface is stable.The study results provided theoretical basis for the mining process determination of Erdaohe Iron Mine.
引文
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[5]陈清运,蔡嗣经.地下开采地表变形数值模拟研究[J].金属矿山,2004,6(6):19-21.
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