Abstract: Based on the anisotropic elastic theory of rock mass,the X-ray method is used to mesasure three-dimensional components of macro-residual principal stress,horizontal and verticl maximum shear stresses as well as its elastic strain energy density distributions with depth in rock mass on core samples taken from large aperture borehole series at three slies of the studied area on the Longmenshan fault zone. The regularities of their distribution with depth are analysed and the residual elastic strain energy stored in the rock mass of this fault zone are estimated.

Key words: Tectonic stress field, X-ray analysis, Longmenshan intracontinental subduction zone, Paleotectonic residual stress, Residual strain energy density

摘要： 以岩体正交异性弹性理论为基础,用X射线法,在龙门山断裂带测区,选取3个小区深钻孔系列的岩心,测量了岩体中宏观残余应力场的水平和铅直三维主分量、水平和铅直最大剪应力,及其应变能密度随深度的分布,分析了它们沿深度的分布规律,估算了该断裂带岩体中储存的宏观残余弹性应变能的量级。

关键词: 构造应力场, X光分析, 龙门山陆内俯冲带, 古构造残余应力, 残余应变能密度