三峡库区仙女山和九畹溪断裂带水库地震变化规律

doi:10.13278/j.cnki.jjuese.20200033

摘要/Abstract

摘要： 三峡库区蓄水以来，长江周边出现了大量的水库地震，主要集中于巴东—泄滩—仙女山区域，目前已达上万次，最大震级为5.1级。通过野外地质调查及对已有水库地震数据进行研究，采用构造地质分析方法，对三峡库区仙女山和九畹溪断裂带水库地震空间上的迁移规律、时间上的周期规律以及微地震群的成因机理进行分析。结果表明：从时间上看，水库地震具有周期性，表现为长周期（与库水位相关）和短周期（与库水位快速波动相关）；从空间上看，水库地震具有迁移规律，受九畹溪断裂控制的触发型水库地震存在着逐渐向南迁移的特征，受仙女山断裂控制的触发型水库地震局限分布于仙女山断裂北延端点处，分布于仙女山断裂西侧（周坪乡附近）带状分布的水库诱发地震逐渐呈点状向南迁移。

关键词: 水库地震迁移, 水库地震周期, 仙女山和九畹溪断裂带, 三峡库区

Abstract: Since the impoundment of the Three Gorges Reservoir, a large number of reservoir earthquakes have occurred around the Yangtze River, mainly in the area of Badong-Xietan-Xiannüshan. So far, they have reached tens of thousands of times, with the maximum magnitude of 5.1. Through the field geological survey of the Xiannüshan and Jiuwanxi fault zones and the existing seismic data of the reservoir, a tectonic geological method is adopted to analyze the law of migration, the periodicity of time, and the genetic mechanism of the micro-seismic groups. It is concluded that from the time point of view, the reservoir earthquake has periodicity of long period (related to reservoir water level) and short period (related to rapid fluctuation of reservoir water level). From the space point of view, the reservoir earthquakes have a certain migration law:The reservoir earthquakes triggered by the Jiuwanxi fault have the characteristics of gradual migration to the south; The reservoir earthquakes triggered by the Xiannüshan fault are limited to the northward extension of the Xiannüshan fault; the banded earthquakes induced by reservoirs on the west side of the Xiannüshan fault (near Zhouping Township) have the trend of gradual migration to the south.

Key words: reservoir earthquake transfer law, reservoir earthquake cycle, Xiannüshan and Jiuwanxi fault zones, the Three Gorges Reservoir area

中图分类号:

P642.22

王孔伟, 路永强, 聂进, 滕明明, 王宵亮. 三峡库区仙女山和九畹溪断裂带水库地震变化规律[J]. 吉林大学学报(地球科学版), 2021, 51(2): 624-637.

Wang Kongwei, Lu Yongqiang, Nie Jin, Teng Mingming, Wang Xiaoliang. Earthquake Variation Law of Xiannüshan and Jiuwanxi Fault Zones in Three Gorges Reservoir Area[J]. Journal of Jilin University(Earth Science Edition), 2021, 51(2): 624-637.

参考文献

[1] 张娜,赵翠萍,周连庆. 三峡水库区上地壳三维精细速度结构成像[J]. 地震,2018,38(4):37-48. Zhang Na, Zhao Cuiping, Zhou Lianqing. Upper Crust Velocity Structure Tomography of the Three Gorges Reservoir Area Based on Dense Observation[J]. Earthquake, 2018, 38(4):37-48.
[2] 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[J]. 大地测量与地球动力学,2003,23(4):75-79. Li Shengle, Yan Zunguo, Xue Junrong, et al. First Microquake Swarm Activity Since Storage in Three Gorges Reservoir[J]. Journal of Geodesy and Geodynamics, 2003, 23(4):75-79.
[3] 王以仁. 水库诱发地震成因机制的探讨[J]. 广西水利水电,1991(2):64-69. Wang Yiren. Discussion on the Mechanism of Reservoir Induced Earthquake[J]. Guangxi Water Resources & Hydropower Engineering, 1991(2):64-69.
[4] 丁原章.水库诱发地震[M].北京:地震出版社,1989:64-72. Ding Yuanzhang. Reservoir Induced Seismicity[M]. Beijing:Seismological Press, 1989:64-72.
[5] 李一赫,王殿举,于法浩,等.下刚果盆地白垩系盐构造的形成演化[J].吉林大学学报(地球科学版),2020,50(6):1628-1638. Li Yihe,Wang Dianju,Yu Fahao,et al. Formation and Evolution of Cretaceous Salt Structures in Lower Congo Basin[J].Journal of Jilin University(Earth Science Edition)2020,50(6):1628-1638.
[6] 王孔伟,张帆,邱殿明. 三峡库区黄陵背斜形成机理与滑坡群关系[J]. 吉林大学学报(地球科学版),2015,45(4):1142-1154. Wang Kongwei, Zhang Fan, Qiu Dianming. Relation of Huangling Antiline and Landslide Group in the Three Gorges Reservoir Area[J]. Journal of Jilin University (Earth Science Edition), 2015, 45(4):1142-1154.
[7] 王瑞江,谭成轩,盛昌明.长江三峡地区仙女山断裂带构造活动性及其北延问题讨论[J].地球科学:中国地质大学学报,1995,20(6):693-696. Wang Ruijiang, Tan Chengxuan, Sheng Changming. A Discussion of Structural Activity of Xiannüshan Fault Belt and Its Extension Towards North in the Three Gorges on the Yangtze River[J]. Earth Science:Journal of China University of Geosciences, 1995, 20(6):693-696.
[8] 毕珉烽,楚全芝,邓志辉,等.长江三峡地区仙女山断裂北端延伸问题探讨[J].地震地质,2012,34(2):294-302. Bi Minfeng, Chu Quanzhi, Deng Zhihui, et al. Tectonic Landform and Location of the Northern End of Xiannüshan Fault at the Three Gorges Area[J]. Seismology and Geology, 2012, 34(2):294-302.
[9] 吴建超,陈蜀俊,陈俊华,等. 三峡水库蓄水后仙女山断裂北段数值模拟及其孕震机理研究[J]. 地震研究,2016,39(2):218-223. Wu Jianchao, Chen Shujun, Chen Junhua, et al. Numerical Simulation of the Xiannüshan Fault's North Segment and Its Seismogenic Mechanism Study After the Impounding of the Three Gorges Reservoir[J]. Journal of Seismological Research, 2016, 39(2):218-223.
[10] 邓铭哲,何登发,张煜颖. 鄂西仙女山断裂构造演化及其对长阳背斜圈闭性的影响[J]. 石油实验地质,2018,40(2):177-184. Deng Mingzhe, He Dengfa, Zhang Yuying. Tectonic Evolution of Xiannüshan Fault and Its Influence on Hydrocarbon Traps in Changyang Anticline, Western Hubei Fold Belt[J]. Petroleum Geology & Experiment, 2018, 40(2):177-184.
[11] 邓铭哲,张伟康. 四川盆地秭归复向斜构造变形机制及构造意义[J]. 石油与天然气地质,2018,39(5):1022-1036. Deng Mingzhe, Zhang Weikang. Structural Deformation Mechanism and Significance of the Zigui Synclinorium, Sichuan Basin[J]. Oil & Gas Geology, 2018, 39(5):1022-1036.
[12] 何超枫. 三峡库首区仙女山-九畹溪断裂带活化特征研究[D]. 武汉:中国地震局地震研究所,2016. He Chaofeng. Study on Fault Reactivation Feature of Xiannüshan-Jiuwanxi Fault Zone in the Head Area of the Three Gorges[D]. Wuhan:Institute of Geology, China Earthquake Administration, 2016.
[13] 车用太,陈俊华,张莉芬,等. 长江三峡工程库首区胡家坪M_S4.1水库诱发地震研究[J]. 地震,2009,29(4):1-13. Che Yongtai, Chen Junhua, Zhang Lifen, et al. Study of the Reservoir-Induced Hujiaping M_S 4.1 Earthquake in the Three Gorges Dam Area[J]. Eartequake, 2009, 29(4):1-13.
[14] 王秋良,张丽芬,廖武林,等. 2014年3月湖北省秭归县M 4.2、M 4.5地震成因分析[J]. 地震地质,2016,38(1):121-130. Wang Qiuliang, Zhang Lifen, Liao Wulin, et al. Research on Genesis of M 4.2 and M 4.5 Earthquakes Sequences in March 2014 in Zigui County, Hubei Province[J]. Seismology and Geology, 2016, 38(1):121-130.
[15] 吴海波,姚运生,申学林,等. 2014年秭归M_S 4.5和M_S 4.9地震震源与发震构造特征[J]. 地震地质,2015,37(3):719-730. Wu Haibo, Yao Yunsheng, Shen Xuelin, et al. A Disscussion on the Source and Seismogenic Structure of M_S 4.5 and M_S 4.9 Zigui Earthquakes in 2014[J]. Seismology and Geology, 2015, 37(3):719-730.
[16] 焦远碧. 地震序列类型、地震序列b值与地震大形势关系初探[J]. 地震,1998,18(1):33-40. Jiao Yuanbi. Preliminary Study on the Relationship Between the Type of Earthquake Sequence, b of Earthquake Sequence and the Situation of Earthquake[J]. Earthquake, 1998, 18(1):33-40.
[17] 徐长朋.长江三峡库区水库诱发地震定位与震源机制解特征研究[D]. 北京:中国地震局地质研究所,2010. Xu Changpeng. A Study on Reservoir Induced Earthquake Location and Focal Mechanism Solution Characteristics in the Three Gorges Reservoir Area of the Yangtze River[D]. Beijing:Institute of Geology, China Earthquake Administration, 2010.
[18] 戴苗,姚运生,陈俊华,等. 三峡库区地震活动与坝前水位关系研究[J]. 人民长江,2010,41(17):12-15,50. Dai Miao, Yao Yunsheng, Chen Junhua, et al. Study on Relationship Between Earthquake Activity in Three Gorges Reservoir Area and Water Level in Front of Dam[J]. Yangza River, 2010, 41(17):12-15, 50.
[19] 张丽芬,姚运生,申学林,等. 三峡水库地震类型:构造触发和非构造诱发地震及发震机理研究[J]. 大地测量与地球动力学,2014,34(4):77-82. Zhang Lifen, Yao Yunsheng, Shen Xuelin, et al. Study on Type and Focal Mechanism of the Earthquakes in Three Gorges Reservoir[J]. Journal of Geodesy and Geodynamics, 2014, 34(4):77-82.
[20] 魏东,王孔伟,朱伟,等. 三峡库区巴东库岸段水库地震迁移规律[J]. 工程地质学报,2018,26(4):915-929. Wei Dong, Wang Kongwei, Zhu Wei, et al. Seismic Migration Regularity in the Badong Section of the Three Gorges Reservoir Area[J]. Journal of Engineering Geology, 2018, 26(4):915-929.
[21] 李世杰,吕悦军,刘静伟. 古登堡-里希特定律中的b值统计样本量研究[J]. 震灾防御技术,2018,13(3):636-645. Li Shijie, Lü Yuejun, Liu Jingwei. The Study of Sample Size on b-Value Statistics in the Gutenberg-Richter's Law[J]. Technology for Earthquake Disaster Prevention, 2018, 13(3):636-645.

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