It is shown that regional initial rock stress state is controlled by larger faults and that heterogeneity and aeolotropism of initial rock stress field are caused by superposition of action of faults.

• 研究结果表明：区域原岩应力状态宏观上主要受几何尺寸大的断层的支配，局部范围内受复合断层的叠加扰动影响，造成了原岩应力状态的各向异性及非均匀分布特征。