利用远震接收函数反演乌江彭水电站地震台下方地壳厚度
- 1. 中国科学技术大学地球与空间科学学院, 蒙城地球物理国家野外科学观测研究站, 合肥 230026;
- 2. 重庆市地震局, 重庆 401137
基金项目:
重庆市2011年科技计划资助项目(CSTC2011AC0149)
作者简介:
王小龙(1977-),在读硕士研究生,工程师,主要从事地震监测和地壳结构研究.E-mail:cqwxl@mail.ustc.edu.cn
- 收稿日期:
2010-11-15
- 刊出日期:
2011-06-15
摘要: 乌江彭水电站目前是重庆市最大的水电站,电站总投资121亿元,总装机容量为175万kW。坝高116.5 m,水库正常蓄水水位293 m,总库容13.35亿m3,为河道型高坝水库。已有研究结果表明,彭水电站坝区是稳定的,但库区及外围地区仍存在5级左右的地震活动背景,在水库蓄水后有可能诱发中、强地震。本文利用彭水台网于2008年11月到2010年12月间记录到的远震数据,通过接收函数的H-Kappa叠加法研究了彭水电站地震台站下方的地壳厚度和泊松比等地壳参数。结果表明该区的地壳厚度在43~46 km之间,泊松比在0.20~0.24之间,这对该区的深部地质构造特征、分析孕震机制等研究具有积极的意义。
ANALYSIS OF CRUSTAL STRUCTURE UNDER PENGSHUI HYDROPOWER STATION BY RECEIVER FUNCTION
- 1. Mengcheng National Geophysical Observatory, School of Earth and Space University ofScience and Technology, Hefei 230026, China;
- 2. Earthquake Administration of Chongqing, Chongqing 401137, China
- Received Date:
2010-11-15
- Publish Date:
2011-06-15
Abstract: With installed capacity of 1.75 million kilowatts and total investment of 23 billion yuan,the Pengshui hydropower station on Wujiang-river is the biggest hydropower station of Chongqing.The dam of the station is about 116.5 meters high,the normal water level is up to 293 meters,and the reservoir capacity is 1.335 billion cubic meters.Researches show that the crust around the dam is stable,but the impoundment of the reservoir may induce moderate and strong earthquake in the potential seismic sources zone.On basis of teleseismic waveform data from 2008 to 2010 recorded by Pengshui Hydropower seismic network,this paper studies the crustal thickness and Passion's ratio of the area using receiver function method.The results show that the crustal thickness range from 43.9 to 47 km and the Poisson's ratio ranges from 0.20 to 0.24.
王小龙, 刘渊源, 余国政, 郭欣, 王强. 利用远震接收函数反演乌江彭水电站地震台下方地壳厚度[J]. 华北地震科学, 2011, 29(2): 13-18.
| 引用本文: |
王小龙, 刘渊源, 余国政, 郭欣, 王强. 利用远震接收函数反演乌江彭水电站地震台下方地壳厚度[J]. 华北地震科学, 2011, 29(2): 13-18.
|
WANG Xiao-long, LU Yuan-yuan, YU Gou-zhen, GUO Xin, WANG Qiang. ANALYSIS OF CRUSTAL STRUCTURE UNDER PENGSHUI HYDROPOWER STATION BY RECEIVER FUNCTION[J]. North China Earthquake Sciences, 2011, 29(2): 13-18.
| Citation: |
WANG Xiao-long, LU Yuan-yuan, YU Gou-zhen, GUO Xin, WANG Qiang. ANALYSIS OF CRUSTAL STRUCTURE UNDER PENGSHUI HYDROPOWER STATION BY RECEIVER FUNCTION[J]. North China Earthquake Sciences, 2011, 29(2): 13-18.
|
点击查看大图
下载:
