地震学报2013，Vol.35Issue(2)：137-150,14.DOI:10.3969/j.issn.0253-3782.2013.02.001
汶川MS8.0地震对龙门山断裂带附近地应力环境影响初探——以北川、江油地区为例
A preliminary study of the influence of Wenchuan MS8.0 earthquake on in-situ stress state near Longmenshan fault zone: A case study in Beichuan and Jiangyou areas
摘要
Abstract
In order to investigate the influence of Wenchuan MS8. 0 earthquake on in-situ stress state near the Longmenshan fault zone, hydraulic fracturing measurements in three 200 m-deep boreholes were carried out in Beichuan and Jiangyou areas near the fault zone from Oct. to Dec, 2009, and the distribution of current in-situ stress there at the time more than 1 year after the earthquake was analyzed. Based on the in-situ stress measurements and coseismic fault displacement in the study areas, the distribution of additional stress induced by fault motion was calculated with a linear-elastic finite element simulation, and then distribution of the principal stress at the two boreholes before the earthquake was calculated. Finally, the influence of Wenchuan MS8. 0 earthquake on in-situ stress state in a superficial zone near Longmenshan fault was discussed through comparative analysis.关键词
龙门山断裂带/水压致裂地应力测量/地应力环境/线弹性有限元数值模拟Key words
Longmenshan fault zone/ hydraulic fracturing stress measurement/ in-situ stress state/ three-dimensional linear finite element simulation分类
天文与地球科学引用本文复制引用
丰成君,陈群策,谭成轩,吴满路,秦向辉,廖椿庭..汶川MS8.0地震对龙门山断裂带附近地应力环境影响初探——以北川、江油地区为例[J].地震学报,2013,35(2):137-150,14.基金项目
国土资源部深部探测技术与实验研究专项(Sinoprobe-06-03)和中国地质调查局项目"青藏高原东缘主要断裂带地应力监测"(1212010911034)联合资助. （Sinoprobe-06-03）
