深溪沟电站大坝强震监测系统设计及应用
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摘要
强震监测是大坝安全监测的重要内容之一,强震监测成果对大坝的安全性和稳定性分析有重要作用。本文根据水电站枢纽工程实际对深溪沟水库大坝强震监测系统设计开展研究,并对仪器的性能指标和数据采集处理分析软件进行了全面阐述。通过深溪沟水电站建设大坝强震监测系统的运行实践,大坝强震监测系统可以在地震发生后短时间内自动获取强震动加速度记录,储存地震波数据,并显示大坝坝体各测点的地震反应过程。强震监测结果进一步验证了设计烈度,为判定震后大坝安全性提供了支持。
The monitoring of the earthquake around the dam is the key content of dam safety and the seismic monitoring result plays an important function in the analysis of the safety and stability of the dam. This paper studies and designs the seismic monitoring system of Shenxigou Hydropower Station according to actual situation of the hydropower engineering. The paper also discusses the performance of the instrument and the software about the acquisition and analysis of the seismic data. Through the operation of the seismic monitoring system of Shenxigou Hydropower Station,the system can get the strong earthquake motion acceleration records,store the seismic data,and display the reaction process of the earthquake in each point of dam body. The monitoring result of the strong earthquake motion meets the designed seismic intensity,and it is support to analyze the safety and reliability of the dam building after the earthquake.
The monitoring of the earthquake around the dam is the key content of dam safety and the seismic monitoring result plays an important function in the analysis of the safety and stability of the dam. This paper studies and designs the seismic monitoring system of Shenxigou Hydropower Station according to actual situation of the hydropower engineering. The paper also discusses the performance of the instrument and the software about the acquisition and analysis of the seismic data. Through the operation of the seismic monitoring system of Shenxigou Hydropower Station,the system can get the strong earthquake motion acceleration records,store the seismic data,and display the reaction process of the earthquake in each point of dam body. The monitoring result of the strong earthquake motion meets the designed seismic intensity,and it is support to analyze the safety and reliability of the dam building after the earthquake.
引文
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[7]任叶飞,温瑞智,周宝峰,等.2013年4月20日四川芦山地震强地面运动三要素特征分析[J].地球物理学报,2014,57(6):1836-1846.
[2]中华人民共和国水利部.水工建筑物强震动安全监测技术规范SL486-2011[S].北京:中国水利水电出版社,2011.
[3]苏克忠,张立飞,朱栗武,等.大坝强震安全监测[M].北京:中国水利水电出版社,1996.
[4]沈崇刚,陈厚群,张楚汉,等.新丰江水库地震及其对大坝的影响[J].中国科学,1974(2):184-205.
[5]周宝峰.强震观测中的关键技术研究[D].哈尔滨:中国地震局工程力学研究所,2012.
[6]中国地震局震害防御司.中国近代地震目录(公元1912—1990年MS≥4.7)[S].北京:地震出版社,1999.
[7]任叶飞,温瑞智,周宝峰,等.2013年4月20日四川芦山地震强地面运动三要素特征分析[J].地球物理学报,2014,57(6):1836-1846.
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