雅砻江中下游的背景噪声研究
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摘要
发源于青海巴颜喀拉山南端,止于四川攀枝花市的雅砻江流域,全长1571km,规划设计了21座梯级电站。2012年3月16日,雅砻江流域中下游水库诱发地震监测系统(一期)工程通过验收。该工程共布设了38个地震台站,跨越了桐梓林、二滩、官地、锦屏二级、锦屏一级共5级电站,总长度约500km。经38个地震台站的数据计算出上述500km长的背景噪声均优于1×10-7 m/s,达到了相关规范的要求。除中下游的500km外,雅砻江中上游长约1 071km,海拔从2 000m升至4 000m,且跨越了其余16级梯级水电站的噪声情况怎样?作者认为有必要做深入研究,并认为应以雅砻江为例,建立专门的水库地震噪声模型,以填补我国水系噪声模型为零的空白。
The Yalong river,originated from the southern foot of the Bayankala mountains in Qinghai province,stretching from northwest to southeast,runs through the western part of Sichuan province,and joins the Jinsha river in Panzhihua.The main stream of the Yalong is 1 571km.Twenty-one cascade hydropower stations have been planned along the main stream of the Yalong.The project of the reservoir-induced earthquake observation system in the middle and lower reaches of the Yalong river was accepted on March 16,2012.The observation system spreads for 500 kilometers across Tongzilin,Ertan,Guandi,Jinping-Ⅱ,Jinping-Ⅰfive hydroelectric stations.There are 38 earthquake stations along 500 kilometers.Background noise of these 500 kilometers are super to 1×10-7 m/s,but how about 1 071 kilometers across 16 cascade hydroelectric stations located from altitude 2000 meters to 4000 meters except these 500 kilometers?It is necessary to study and take Yalong river as an example to construct specialized noise model for river system,which fills in a gap that river noise model is absent.
The Yalong river,originated from the southern foot of the Bayankala mountains in Qinghai province,stretching from northwest to southeast,runs through the western part of Sichuan province,and joins the Jinsha river in Panzhihua.The main stream of the Yalong is 1 571km.Twenty-one cascade hydropower stations have been planned along the main stream of the Yalong.The project of the reservoir-induced earthquake observation system in the middle and lower reaches of the Yalong river was accepted on March 16,2012.The observation system spreads for 500 kilometers across Tongzilin,Ertan,Guandi,Jinping-Ⅱ,Jinping-Ⅰfive hydroelectric stations.There are 38 earthquake stations along 500 kilometers.Background noise of these 500 kilometers are super to 1×10-7 m/s,but how about 1 071 kilometers across 16 cascade hydroelectric stations located from altitude 2000 meters to 4000 meters except these 500 kilometers?It is necessary to study and take Yalong river as an example to construct specialized noise model for river system,which fills in a gap that river noise model is absent.
引文
[1]国家发展和改革委员会办公厅.发改办能源[2003]1052号.国家发展改革委员会办公厅关于雅砻江水能资源梯级开发主体的复函.2003
[2]http:∥www.ehdc.com.cn/new/ylj_prf.htm
[3]http:∥www.mttmllr.com/ADS/DATA/peterson_usgs_seismic_noise_ofr93-322.pdf?
[4]杜玮.GB/T19531.1~19531.4—2004.《地震台站观测环境技术要求》宣贯教材.北京:地震出版社,2004
[5]中国地震局.中国数字测震台网技术规程.2005年7月
[2]http:∥www.ehdc.com.cn/new/ylj_prf.htm
[3]http:∥www.mttmllr.com/ADS/DATA/peterson_usgs_seismic_noise_ofr93-322.pdf?
[4]杜玮.GB/T19531.1~19531.4—2004.《地震台站观测环境技术要求》宣贯教材.北京:地震出版社,2004
[5]中国地震局.中国数字测震台网技术规程.2005年7月
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