利用朝鲜半岛东南部地区浅层地应力数据,给出区域现今应力状态的分布特征及其与断层分布的关系。地应力数据表明,区域最大主压应力呈ENE-WSW到NE-SW向,这与地震震源机制解及欧亚板块东部构造应力方向的一阶模式一致。或许是受到断层的影响,现今应力张量在大小和方向上表现出不均匀性。区域水平主应力变化较为一致,而垂向则变化较大。应力场的大小受区域断层多少的影响,断层越多应力越小,这表明断层应力释放或许是造成低应力的主要原因之一。为了验证这种假设的正确性,我们对第四纪活动断层与现今应力场的关系进行分析。在现今应力状态下,断层剪应力与正应力比值较高,这与区域大部分断层以走滑为主是一致的,这意味着断层的活动可以维持当前的应力场。 Based on the shallow ground stress data in the southeast part of the Korean Peninsula, the present state of stress distribution in the area and its relationship with fault distribution are given. In-situ stress data indicate that the maximum principal compressive stress in the region is in the ENE-WSW to NE-SW direction, which is consistent with the first-order mode of seismic focal mechanism solutions and the tectonic stress direction of the eastern Eurasian plate. Perhaps affected by faults, today’s stress tensors exhibit inhomogeneity in size and direction. The regional level of the main stress changes are more consistent, while the vertical changes are larger. The size of the stress field is affected by the amount of regional faults. The more the faults, the smaller the stress. This suggests that stress release may be one of the major causes of low stress. In order to verify the correctness of this assumption, we analyze the relationship between Quaternary active faults and the present stress field. In the current state of stress, the ratio of fault shear stress to normal stress is high, which is consistent with the strike-slip of most faults in the area, which means that the fault activity can maintain the current stress field.