| 煤矿采空塌陷区埋地管道力学分析 |
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| 引用本文： | 高贤成. 煤矿采空塌陷区埋地管道力学分析[J]. 中州煤炭, 2011, 0(9) |
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| 作者姓名： | 高贤成 |
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| 作者单位： | 华晋焦煤有限责任公司; |
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| 摘 要： | 煤矿埋地瓦斯气体管道在遭到采空塌陷后,将使局部管道脱离地层支撑而悬空,严重时造成管道断裂破坏,给煤矿安全带来巨大隐患和威胁。采用基于Winkler地基梁模型理论推导和有限元数值模拟的方法分析采空塌陷对管道安全的影响。建立了管道遭受采空塌陷的几何大变形力学分析模型和有限元力学模型,采用非线性理论对力学模型进行求解。计算结果表明:理论推导计算方法和有限元法的管道分析结果具有较好的一致性,误差满足工程精度的要求;当采空塌陷区长度达到20 m时,管道发生失效屈服破坏;土弹簧刚度较小有利于管道的安全,管道通过增加壁厚和外径以及减小埋深能够有效提高管道的安全性。
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| 关 键 词： | 采空塌陷 管道 Winkler地基 有限元 几何大变形 非线性理论 |
Mechanics Analysis on Buried Pipeline of Mining Collapse Area in Coal Mine |
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| Gao Xiancheng. Mechanics Analysis on Buried Pipeline of Mining Collapse Area in Coal Mine[J]. Zhongzhou Coal, 2011, 0(9) |
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| Authors: | Gao Xiancheng |
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| Affiliation: | Gao Xiancheng(Huajin Coking Coal Co.,Ltd.,Liulin 033300,China) |
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| Abstract: | When buried gas pipeline of mining coal suffered the mining collapse,part pipeline broke away from the stratum and was suspended in midair,pipeline might be fractured,it brought hidden trouble and menace to the safety of coal mine.The impact of the mining collapse geology disaster on pipeline safety was studied by adopting elastic foundation theory based on Winkler assumption and finite element numerical simulation.The geometry big deformation mechanics analysis model and finite element model was built on t... |
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| Keywords: | mining collapse pipeline Winkler foundation finite element geometry big deformation nonlinearity theory |
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