云鹏电站水库诱发地震分析
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摘要
云鹏电站水库区内分布有三迭系中统个旧组灰岩,部分库段灰岩与库水直接接触,水库库容3.74×108m3,为大(2)型水库,云鹏电站水库具有发生水库诱发地震的地震地质条件。对水库蓄水后2007年3月至2008年1月间水库区发生的一系列地震,就其与库水位关系进行分析研究,结合工程区区域地质背景、水库地质条件以及工程规模等,类比国内岩溶地区水库诱发地震震例,判断该系列地震群属岩溶塌陷型水库诱发地震。
The reservoir area of the Yunpeng hydropower project is geologically composed of limestone belonging to Gejiu formation of Miocene series of Triassic system and some sections of the reservoir are in direct contact with limestone.The storage capacity of the reservoir is 3.74x108m3,which is classified as a large size(2) reservoir and provided with the geological conditions to cause an induced earthquake.A series of earthquakes occurred after impoundment in the reservoir area during the period of from March,2007 to January,2008.The paper makes analysis and study of the relationship between the earthquakes and the water levels of the reservoir.The paper also draws an analogy between the induced earthquakes occurred in the Yunpeng reservoir area and those occurred in karstic areas in the country according to the regional geological background of the project area,the geological conditions of the reservoir and the size of the project,etc.The paper forms a judgment that the series of earthquakes occurred in the Yunpeng reservoir area belongs to the karstic collapse type reservoir-induced earthquakes.
The reservoir area of the Yunpeng hydropower project is geologically composed of limestone belonging to Gejiu formation of Miocene series of Triassic system and some sections of the reservoir are in direct contact with limestone.The storage capacity of the reservoir is 3.74x108m3,which is classified as a large size(2) reservoir and provided with the geological conditions to cause an induced earthquake.A series of earthquakes occurred after impoundment in the reservoir area during the period of from March,2007 to January,2008.The paper makes analysis and study of the relationship between the earthquakes and the water levels of the reservoir.The paper also draws an analogy between the induced earthquakes occurred in the Yunpeng reservoir area and those occurred in karstic areas in the country according to the regional geological background of the project area,the geological conditions of the reservoir and the size of the project,etc.The paper forms a judgment that the series of earthquakes occurred in the Yunpeng reservoir area belongs to the karstic collapse type reservoir-induced earthquakes.
引文
[1]丁原章.水库诱发地震[M].北京:地震出版社,1989.
[2]杨清源.国内外水库诱发地震目录[M].地震地质,1996.
[3]毛玉平.云南水电站建设和大型水库诱发地震的监测与研究[J].云南水利水电,2009.
[2]杨清源.国内外水库诱发地震目录[M].地震地质,1996.
[3]毛玉平.云南水电站建设和大型水库诱发地震的监测与研究[J].云南水利水电,2009.
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