岩土力学2012，Vol.33Issue(11)：3414-3418,5.
基于断层擦痕侧伏角公式的构造应力张量反演
Back analysis of tectonic stress tensor based on the formula for calculating pitch direction of fault slip data
摘要
Abstract
Based on the formula deduced by Aleksandrowski for calculating pitch direction of fault slip data, an improved method for determination of tectonic stress tensor was put forward. A method for back analysis of tectonic stress field was deduced by least square method based on the relation between tectonic stress with pitch direction of fault slip data in different stress ratio values. At last, the calculating process was deduced by Matlab program. The fault slip data were obtained in the Wushan mining region, Jiangxi province. On this basis, by the improved method of inversion of fault slip data, the parameters of tectonic stress tensor in mine region were determined. The tectonic stress field in this area since Late Jurassic was obtained, by comparing the faults with the average stress field of the region obtained from focal mechanism solutions and studying distribution of the strike-slip faults and the tectonic setting of this area. It is indicated that the tectonic stress field in this area has better stability since Late Jurassic. The progress of solving tectonic stress tensor and the application of the improved method show that, comparing with the graphical instrument method put forward by Aleksandrowski and the method for back analysis by Etchecopar, the method is simple and more feasible, and the focal mechanism solution is reasonable.关键词
断层擦痕/侧伏角/反演/武山铜矿/构造应力张量Key words
fault slip data/ pitch direction/ back analysis/ Wushan copper mine region/ tectonic stress tensor分类
天文与地球科学引用本文复制引用
何书,赵奎,朱忠,吴开兴..基于断层擦痕侧伏角公式的构造应力张量反演[J].岩土力学,2012,33(11):3414-3418,5.基金项目
江西省青年科学基金资助项目(No.2010GQC0049) （No.2010GQC0049）
国家重点基础研究发展计划资助项目(No.2011cb411913) （No.2011cb411913）
国家自然科学基金项目(No.51064010) （No.51064010）
国家科技支撑计划项目子课题(No.2008BAB32B03). （No.2008BAB32B03）
