| 地质灾害区输电塔架安全分析 |
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| 引用本文： | 刘鸣,李永诰,张厚启,王传生.地质灾害区输电塔架安全分析[J].中国电力,2012,45(5):34-38. |
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| 作者姓名： | 刘鸣 李永诰 张厚启 王传生 |
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| 作者单位： | 山东电力集团公司枣庄供电公司,山东枣庄,277101 |
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| 摘 要： | 煤矿采空区等地质灾害区的塌陷和地表变形对穿越该地区的输电线路铁塔与基础存在着极大的危害,输电线路设计中应对塌陷和变形估计充足。通过对输电塔进行地表移动下的极限承载力有限元分析,以研究不同工况下杆塔的极限承载力。结果表明单支座竖向位移(地表不均匀沉降)是一种最危险的状况,在位移荷载较小时塔架即丧失了稳定性,由此针对地质灾害区的线路杆塔结构设计提出建议,并提出了线路规划设计改进措施及地基、基础处理方案,研究结果为我国煤矿采空区等地质灾害区输电线路的安全建设和运行提供了参考依据。
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| 关 键 词： | 地质灾害区 输电塔 地表变形 极限承载力计算 杆塔结构设计 基础处理 |
Safety analysis of typical transmission tower in geologic disaster zone |
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| LIU Ming
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LI Yong-gao
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ZHANG Hou-qi
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WANG Chuan-sheng.Safety analysis of typical transmission tower in geologic disaster zone[J].Electric Power,2012,45(5):34-38. |
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| Authors: | LIU Ming LI Yong-gao ZHANG Hou-qi WANG Chuan-sheng |
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| Affiliation: | (Zaozhuang Electric Power Supply Company of Shandong Electric Power Corporation,Zaozhuang 277101,China) |
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| Abstract: | Ground collapse and deformation in goaf of coal mine and other subsidence area are harmful to transmission tower and foundation.Adequate risk estimation is needed in design process.Finite element analysis is performed on transmission tower with ground movement to calculate ultimate bearing capacity.The results indicate that the vertical downward displacement on single support tower under non-uniform ground settlement is most dangerous.The tower lost stability with very small magnitude of displacement.Schemes on tower structure design and foundation treatment methods are proposed.The research results provide reference and basis for safe operation of transmission lines in the goaf area of coal mine and other subsidence area. |
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| Keywords: | geologic disaster zone transmission towers ground deformation bearing capacity computation with foundation deformation tower structure design foundation treatment |
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