水库诱发地震规律研究——以三峡地区为例
详细信息 本馆镜像全文    |  推荐本文 | | 获取馆网全文
摘要
本文在前人对水库诱发地震规律的研究基础上,综合分析了三峡地区1980年以来ML2级及以上地震的震例资料,对比分析了三峡水库蓄水前后震源在空间分布上的变化规律和地震频度变化的因果问题。结果认为,相对于蓄水前,蓄水后震源深度没有明显加深,震源位置有向库区集中的趋势。蓄水后地震年平均释放能量有一定的增强,能量增强的原因主要是地震频度的增加导致。
This paper comprehensively analyzes the data collected from the earthquakes with magnitudes of ML2 and larger since 1980 in the Three Gorges area.A comparison is made of the spatial variation in the epicenters before and after the filling of the Three Gorges reservoir.The causes of the changes in earthquake frequency is also discussed in detail.It concludes that there is no noticeable difference in the depth of the epicenters before and after the reservoir filling,but the epicenters tend to be closer to the reservoir region after the filling,and the annual energy release of earthquakes is becoming stronger,which is primarily due to the increase in earthquake frequency in the reservoir area.
引文
[1]陈德基,汪雍熙,曾新平.三峡工程水库诱发地震问题研究.岩石力学与工程学报,2008,27(8):1513-1524
    [2]李玶,李愿军,杨美娥.长江三峡库区水库诱发地震的研究.中国工程科学,2005,7(6):14-20
    [3]陈蜀俊,苏爱军,罗登贵.长江三峡水库诱发地震的成因类型.大地测量与地球动力学,2004,24(2):70-73
    [4]易立新,车用太,王广才.水库诱发地震研究的历史、现状与发展趋势.华南地震,2003,23(1):28-37
    [5]王敦,姚运生,薛军蓉,等.三峡水库重点监视区蓄水前后震源机制研究.大地测量与地球动力学,2007,27(5):103-107
    [6]李胜乐,严尊国,薛军蓉,等.长江三峡水库蓄水后的首发微震群活动.大地测量与地球动力学,2003,23(4):75-79
    [7]李愿军,黄国良.对水库诱发地震的两点认识.震灾防御技术,2008,3(1):61-71
    [8]丁原章.中国的水库诱发地震.华南地震,1989,9(1):64-72
    [9]周明礼,荣建东,周坤根.试论长江三峡地区的地壳运动与地震.地壳形变与地震,1981,65-74
    [10]杨光亮,申重阳,王晓权,等.三峡水库蓄水重力效应数值模拟.大地测量与地球动力学,2005,25(1):19-23
    [11]陈蜀俊,姚运生,曾佐勋.三峡水库蓄水对库区孕震环境及潜在震源影响研究.大地测量与地球动力学,2005,25(3):116-120
    [12]胡毓良,陈献程.我国的水库地震及有关成因问题的讨论.地震地质,1979,1(4):45-57
    [13]Nikolaev N I.Tectonic conditions favorable for causing earthquakes occurring in connection with reservoir filling.Engineering Geology,1974,8:171-189

版权所有:© 2023 中国地质图书馆 中国地质调查局地学文献中心