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小浪底水库区域波速比特征研究
The Study on Characteristics of Wave Velocity Ratio in XiaoLangDi Reservoir Area
- DOI:
- 作者:
- 张新东
zhangxindong
- 作者单位:
- 河北省地震局邯郸中心台
Central Seismostation of Handan , Handan 056001, Hebei Province, China
- 关键词:
- 小浪底区域；波速比；泊松比；介质性质
Xiaolangdi reservoir areas; wave velocity ratio; Poisson’s ratio; medium character
- 摘要:
- 利用小浪底水库架设的8个数字地震台观测数据， 分析了自2008年9月-2011年12月记录到 水库附近的196次地震事件，采用和达法计算了该区波速比值和泊松比值，结果表明：（1）小浪底区域波速比值在1.461 ～2.027之间，相关系数在0.9763 ～0.9995之间，平均波速比值为1.700，略低于地壳的平均波速比1.732，泊松比值在0.17 ～0.33之间，平均泊松比值为0.23。（2）复杂的地质构造环境通过平均波速比和泊松比有所反映，本文件研究结果反映了小浪底水库区域地下介质复杂的特性。
According to multi-station Wadati diagram method, analysising 8 digital seismic data, 196 seismic events between 2008.9 to 2011.12, Study the characteristics of wave velocity ratio and Poisson’s ratio value in Xiaolangdi Reservoir area, the results show: (1) Wave velocity ratio in the range of 1.461 ~ 2.027, the correlation coefficient between 0.9763 ~ 0.9995, the average velocity ratio is 1.700, slightly lower than the crustal average velocity ratio 1.732, Poisson's ratio between 0.17 and 0.33, the average Poisson ratio0.23. (2) Complex geological environment can be reflected by the average velocity ratio and the Poisson ratio, this paper reflects subsurface features in Xiaolangdi Reservoir area.
