【摘要】 在文献 [1 ]的基础上 ,通过对小湾库区岩石介质、地质构造、构造应力场、库区及周围地震活动特点的分析 ,认为小湾库区水库诱发地震的地质环境比较复杂 ,存在发生岩溶型、裂隙型、构造型等三种成因类型的水库诱发地震的基本条件 ,而沿通过库区的澜沧江断裂带及其次级断层 ,和无量山断裂带发生构造型水库诱发地震 ,是小湾库区水库地震活动的主要诱发因素。更多还原

【Abstract】 On the basis of reference [1], through the analyses of rock media, geological structures, tectonic stress field and seismic active characteristics in the reservoir area and nearby, it is considered that the geological ambiance of reservoir-induced earthquake in Xiaowan area is complicated. There exist three types of geneses for conditions of reservoir-induced earthquake, such as karst type, fissure type and structure type. However, the structural reservoir-induced earthquake along the Lancangjiang Fault and its sub-faults, as well as the Wuliangshan Fault Zone which crosses the reservoir areas, is the major inducing factors.更多还原