大岗山拱坝抗震监测设计
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摘要
大岗山水电站双曲拱坝最大坝高达210 m,坝址区地震基本烈度为Ⅷ度,在国内外已建和在建的200 m级高拱坝中,设计地震动参数最高。简要分析了工程区所面临的来自鲜水河和安宁河地震带的危险性。介绍了坝区及枢纽建筑物强震监测台网布设及其监测数据的传输与处理流程。阐述了国内坝工设计中极少采用的抗震钢筋、阻尼器的布设及其监测系统的设计。
The 210 m double-curvature arch dam of Dagangshan Hydropower Station,located at an area with basic seismic intensity of 8,has the highest earth quake intensity among the 200 m level arch dams built and under building at China and abroad. The earthquake risks from Xianshuihe and Anninghe seismic zones adjacent to the dam site are analyzed first. The layout of earthquake monitoring network at dam site and the hydraulic structures are presented as well as transmission and processing way of the monitoring data,especially for the anti-seismic steel bars,dampers embedded in dam body and the monitoring system that are rarely adopted in China.
The 210 m double-curvature arch dam of Dagangshan Hydropower Station,located at an area with basic seismic intensity of 8,has the highest earth quake intensity among the 200 m level arch dams built and under building at China and abroad. The earthquake risks from Xianshuihe and Anninghe seismic zones adjacent to the dam site are analyzed first. The layout of earthquake monitoring network at dam site and the hydraulic structures are presented as well as transmission and processing way of the monitoring data,especially for the anti-seismic steel bars,dampers embedded in dam body and the monitoring system that are rarely adopted in China.
引文
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[2]聂广明,何雷霆.碧口水电站大坝“5.12”地震后的应急检查概况[J].大坝与安全,2008(3)
[3]陈厚群,苏克忠.中国水工结构重要强震数据及分析[M].北京:地震出版社,2000.
[4]常州金土木工程仪器有限公司.岩土工程安全监测手册.第二版[M].北京:中国水利水电出版社,2008
[5]顾冲时,郑东健.李家峡水电站大坝监测资料分析[M].南京:河海大学,2008.
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