摘要
通过对景洪电站水库周围区域地震地质环境,包括主要活动断裂、库区周围地震活动、库区断层性质及其与水库关系的分析,认为景洪电站水库地震地质环境复杂,水库周围地区不仅发育有澜沧江断裂带、澜沧—勐遮断裂带、无量山断裂带等规模较大的活动断裂,而且位于耿马—澜沧地震带、思茅—普洱地震带之间;库区发育一系列NW向断层,主要包括澜沧江断裂、酒房断裂、白马山断裂、打洛断裂、勐养河断裂、大水缸—茨通断裂、安马山断裂、三达山断裂、育种队断裂等,这些断层形成一条以水库为中心的10～20km宽的NW向断层带。因此,景洪电站水库具备发生水库诱发地震的基本条件,发生水库诱发地震危险性较大的是澜沧江断裂近坝址段、安马山断裂南段、白马山断裂。
The seismogeologic environment around Jinghong, Yunnan, Hydropower Station Reservoir, including major active faults, seismicity, faults＇ feature and the relation between them and the reservoir, were comprehensively studied. It is thought that the seismogeologic environment around the Jinghong reservoir is complicated. Because the Lancangjiang, Lancang-Mengzhe and Wuliangshan faults not only develop in the reservoir area, but also lie between Lancang-Gengma Earthquake Belt and Simao-Puer Earthquake Belt. Besides, a series of NW-trending faults, Lancangjiang, Jiufang, Baimashan, Daluo, Mengyanghe, Dashuigang-Citong, Anmas- han, Sandashan, Yuzhongdui faults, form a 10-to 20-km-wide NW-trending fault belt in the reservoir area. So the Jinghong reservoir has basic condition of inducing seismicity, and the more dangerous areas are the near-dam segment of the Lancangjiang fault, the south segment of Anmashan fault, and the Baimashan fault.
出处
《地震研究》
CSCD
北大核心
2008年第2期174-179,共6页
Journal of Seismological Research
基金
云南省重点科技攻关课题(2006SG01)资助
关键词
景洪水电站
水库诱发地震
断层特性
云南
Jinghong hydropower station
reservoir-induced earthquake
fault feature
Yunnan
