三峡水库诱发地震研究综述

A Summary of Three Gorges Reservoir Induced Earthquake Study

三峡水利枢纽规模宏大，举世瞩目，具有巨大的防洪、发电、航运等综合效益，是开发治理长江的骨干工程．三峡工程已于2003年6月蓄水、永久船闸通航，7月第一批机组发电；2009年全部工程竣工投产，三峡水库已初步形成，随着蓄水位上升，库容加大，诱发水库地震的可能性也将加大．根据最大历史地震震级并适当加权，确定库区最大可信地震为6级左右．在仙女山和九湾溪断裂一带（距坝址为18km）存在诱发地震的可能，震级Ms=5．0～5．8级．对坝址所受影响烈度为Ⅵ度，不会对按烈度Ⅶ度设防的枢纽主要建筑物构成直接威胁．必须加强对三峡水库诱发地震的研究、监测及预报，预防地震及地质灾害，确保工程建设及运行安全，构建和谐社会，确保长治久安．本文搜集国内外及三峡水库有关地震研究、监测及预报资料，对三峡水库诱发地震研究进行综述，供参阅指正．

The Three Gorges Project （TGP） on the Yangtze River is the largest water resources project in the world; it is now attracting the worldwide attention. Possessing comprehensive utilization benefits mainly for flood control, power generation and navigation improvement, TGP will be a vital important and backbone project in harnessing and developing of the Yangtze River. The Three Gorges Reservoir has been formed initially; in pace with the water level raising, the storage capacity enlarged; the possibility of reservoir induced earthquake also raised; the highest intensity of induced earthquake would be less than Ⅵ°, and no influence for Ⅶ° designed TGP. However, we must enhance the study, monitors and forecasts of the induced earthquakes, prevent seismic and geological calamities, ensure the safe construction and operation of TGP, set up the harmonious society, guarantee the long period of peace and order. This article collected the long-term earthquake study, monitor and forecast materials of both inside and outside the country as well as the Three Gorges Reservoir, gave a summary of the Three Gorges Reservoir induced earthquake study for your reference and comments.