雅砻江锦屏一级水电站库区蓄水后波速比变化研究  

Study on the Variation of Wave Velocity Ratio of Yalong River Jinping Level I Hydropower Station after Retaining Water at the Reservoir Area

作　　者：杜瑶[1] 邵玉平[1] 阮祥[1] 王余伟[1] 戴仕贵[1] DU Yao;SHAO Yuping;RUAN Xiang;WANG Yuwei;DAI Shigui(Sichuan Earthquake Agency,Chengdu 610041,China)

机构地区：[1]四川省地震局,成都610041

出　　处：《华南地震》2020年第3期34-43,共10页South China Journal of Seismology

基　　金：中国地震局地质研究所中央级公益性科研院所基本科研业务专项(IGCEA1705);中国地震局监测、预报、科研三结合课题(3JH-202001077)。

摘　　要：选取了雅砻江锦屏一级水电站水库蓄水后,四川省木里县项脚乡一带(27.6°~28.2°N、101.1°~101.7°E)研究范围内,2012年3月至2016年9月30日ML≥2.0级的1939次地震进行单台波速比计算,结果显示:库区下闸蓄水后四个阶段,5个台站均呈现出了各阶段波速比均值上升的现象,表明在库区的加卸载以及库水的长期渗透作用下,库区及附近的介质逐渐发生了改变。Selecting Xiangjiao Town(27.6°~28.2°N、101.1°~101.7°E)of Muli County,Sichuan Province at the reservoir area of Yalong River Jinping Level I Hydropower Station after retaining water as research scope,this paper calculated single station wave velocity ratio of 1939 earthquakes with ML≥2.0 from Mar 2012 to Sep 30th,2016.The results show that the five stations experienced the rise of mean wave velocity ratio at various stages during the four stages after retaining water at reservoir area,indicating that the medium at reservoir area and its vicinity experienced variations under the loading and unloading of reservoir area and the long-term permeation of reservoir water.

关 键 词：锦屏一级水电站 波速比 地下介质变化 

分 类 号：TU352.11[建筑科学—结构工程]