煤层开采沉陷对桥梁建筑物的影响分析
发布时间：2019-04-25 17:55
【摘要】：为分析采煤对桥梁建筑物的影响,本文以三道沟煤矿85201工作面为研究平台,采用大型数值模拟软件FLAC3D对大采高浅埋深土层条件下的地表桥梁建筑物进行开采沉陷预计分析,初步确定了沉陷影响的范围。结果表明:地表局部下沉后引起的倾斜是造成桥梁建筑物破坏的主要因素之一;桥梁建筑物的破坏呈现为从破坏量的累积到破坏质的变化,最后破坏趋于稳定的过程特点。通过选取合适的边界约束条件及岩土物理参数,可以较为准确地模拟出桥梁沉陷破坏的基本规律。
[Abstract]:In order to analyze the influence of coal mining on bridge buildings, this paper takes 85201 working face of Santaogou Coal Mine as the research platform, and uses the large-scale numerical simulation software FLAC3D to predict the mining subsidence of the surface bridge buildings under the condition of large mining height and shallow soil layer. The range of subsidence effect is preliminarily determined. The results show that the slope caused by local subsidence of the surface is one of the main factors causing the damage of bridge buildings, and the damage of bridge buildings is characterized by the change from the accumulation of damage to the quality of destruction, and finally the damage tends to be stable. The basic rules of bridge subsidence and failure can be simulated accurately by selecting suitable boundary constraint conditions and geotechnical physical parameters.
【作者单位】： 西安科技大学测绘科学与技术学院;
【基金】：陕西省教育厅专项基金资助项目(12JK0781) 博士点新教师科学基金项目(20096121120001)
【分类号】：TD327;U442
[Abstract]:In order to analyze the influence of coal mining on bridge buildings, this paper takes 85201 working face of Santaogou Coal Mine as the research platform, and uses the large-scale numerical simulation software FLAC3D to predict the mining subsidence of the surface bridge buildings under the condition of large mining height and shallow soil layer. The range of subsidence effect is preliminarily determined. The results show that the slope caused by local subsidence of the surface is one of the main factors causing the damage of bridge buildings, and the damage of bridge buildings is characterized by the change from the accumulation of damage to the quality of destruction, and finally the damage tends to be stable. The basic rules of bridge subsidence and failure can be simulated accurately by selecting suitable boundary constraint conditions and geotechnical physical parameters.
【作者单位】： 西安科技大学测绘科学与技术学院;
【基金】：陕西省教育厅专项基金资助项目(12JK0781) 博士点新教师科学基金项目(20096121120001)
【分类号】：TD327;U442
【参考文献】
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