江坪河水电站水库地震监测台网的勘选测试  

Exploration,Selection and Testing of the Reservoir Seismic Monitoring Network in Jiangpinghe Hydropower Station

作　　者：李权 徐玉聪 唐熠 LI Quan;XU Yucong;TANG Yi(Loushui Hydropower Co.,Ltd.,Hubei Energy Group,Enshi 445801,China;Three Gorges Geotechnical Consultants Co.,Ltd.,Wuhan 430074,China)

机构地区：[1]湖北能源集团溇水水电有限公司,湖北恩施445801 [2]长江三峡勘测研究院有限公司(武汉),湖北武汉430074

出　　处：《水电与新能源》2023年第11期68-71,74,共5页Hydropower and New Energy

摘　　要：详细介绍了江坪河水电站水库地震监测台网的勘选测试情况,通过计算勘选台站的地脉动背景噪声RMS值,分析台基噪声功率谱密度曲线,得到了各个台站等级分类情况,并对台网进行了地震监测能力评估,台站布局是合理可行,观测环境较好,台基地脉动干扰较小,噪声速度都在10^(-7)~10^(-8)范围内,期望的放大倍数可达10~15万倍。The exploration,selection and testing processes of the reservoir seismic monitoring network in Jiangpinghe Hydropower Station are introduced.By calculating the RMS values of the ground microseism ambient noise at the selected station sites,the noise power spectral density curves of the station foundation are analyzed and the classification of each station is obtained.Then,the seismic monitoring capability of the station network is evaluated.It shows that the layout of the stations is reasonable and feasible.The observation environment is satisfactory and the ground microseism interference on the station foundation is small.The noise speed is within the range of 10^(-7)~10^(-8),and the expected amplification factor can reach 100,000 to 150,000.

关 键 词：台站勘选 地脉动背景噪声 噪声功率谱密度 地震监测能力评估 

分 类 号：TV698.13[水利工程—水利水电工程]