Abstract: Based on study in deep geochemisty seismogeology and tectonic stress field, the geological environment in Bayu(Longyu), Bziceng, Moyang and Gengxin of the reservoir district is found in favor of inducing earthquake.

Key words: Longtan reservoir, Ancient karst, Tectonic stress, Water load, Downward addition

摘要： 通过多方面的研究,认为龙滩水库区的巴鱼(龙鱼)、白层、沫阳及更新四个地区具备诱发地震的条件,其共同特点是:断裂破碎、有明显的活动性,断裂性质以剪性或张剪性为主,地表及深部岩溶发育。库水荷载主要支承在正断层或正向平推断层的上盘,且与区域构造应力场形成正向叠加现象,加速了断裂向失稳态发展。

关键词: 龙滩水库, 古岩溶, 构造应力, 水荷载, 正向叠加