小湾库区水库诱发地震的地质环境分析  

Seismo-geological Ambiance Analyses of Reservoir-Induced Earthquake in Xiaowan Area

作　　者：毛玉平[1] 王洋龙[1] 李朝才[1] 

机构地区：[1]云南省地震局,昆明650041

出　　处：《地震研究》2004年第4期339-343,共5页Journal of Seismological Research

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。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.

关 键 词：水库地震 地质构造 应力场 小震活动 小湾库区 

分 类 号：P315.1[天文地球—地震学]