【作者】 王航；

【导师】 杨天鸿；

【作者基本信息】 东北大学 ， 采矿工程， 2009， 硕士

【摘要】 “三下”开采一直是地下复杂采矿的核心难题之一,本文针对孟家岗铁矿开采对铁路、公路稳定性展开研究。本文所做工作如下：根据孟南矿区4#-10#地质断面和地表地形等高线图,建立了精细描述矿体、公路、铁路空间位置关系的三维数字模型。基于弹塑性理论,运用Comsol Multiphysics力学分析软件,建立了孟南矿区矿体最不利开采对地表公路、铁路影响的平面应变与三维力学数值模型,以沉降、倾斜、曲率、水平位移为综合判定指标,对采矿活动造成公路、铁路的沉降变形进行了预测。基于随机介质理论,采用地面变形移动程序GSM,以沉降、倾斜、曲率、水平位移为综合判定指标,运用地质绘图软件SURFER对于地面变形结果进行后处理,得出直观描述地面变形的等值线与三维可视化图形,公路、铁路的变形移动结果进行三维可视化后处理分析,预测了公路、铁路的变形移动结果。通过分析发现,开采造成的公路、铁路变形移动值小于规定值,地下矿体的开采不会影响公路、铁路的正常运营。结合公路、铁路预测变形结果,编制了相应的监测方案,为矿山安全开采提供了理论指导。更多还原

【Abstract】 "Three underground mining" is one of core problems in underground mining.The stability of normal road and railway by the mining of Meng Jiagang iron mine is researched ih this paper.The following works are:The 3D digital model which describes the space ubiety among mine、highway and railway in accordance with geological cross-section and contour line of surf terrain.Based on the elastic-plastic theory and making use of mechanics software Comsol Multiphysics, plane and 3D mechanical model which describe the influence on the railway and highway by mining in Meng Nan mine region will be established. At the same time, subsidence、incline、curvature and plane deformation will be listed as control indexes to predict the deformation of the highway and railway. Based on stochastic medium theory, making use of ground surface deformation program(GSM), taking subsidence、incline、curvature and plane deformation as control indexes, ground surface results can be postprocessed with geological mapping software SURFER to get ground surface deformation results and 3D visualization contour map to predict the displacement and deformation of railway and highway. According to the analysis result,the deformation value is less than the specified value and the normal operation will not be influenced by mining.Combining with the predicting deformation value of normal road and railway, a monitoring program is worked out,which provides theoretical guidance to the safty mining.更多还原