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本文通过辽河油田的钻孔崩落资料及小地震震源机制解，推断出下辽河坳陷地区现代构造应力场的特征。两种方法得到的结果基本一致，即区域应力场和局部应力场的结果一致，该地区处于走滑断层型应力状态。在坳陷北部及南部地区崩落优势明显，表现出水平最大主应力方向呈ＥＷ向；而在坳陷中部地区，崩落优势方向不明显，反映了该地区两水平主应力大小相差不大。
Based on borehole collapse data and focal mechanism solutions of small earthquakes in Liaohe Oilfield, this paper deduces the characteristics of modern tectonic stress field in the lower Liaohe River depression. The results obtained by the two methods are basically the same, that is, the results of regional stress field and local stress field are consistent, and the region is in strike-slip fault-type stress state. In the northern and southern parts of the depression, the avalanche is obvious, showing that the direction of the maximum principal stress is EW direction. However, in the central part of the depression, the predominant direction of avalanches is not obvious, which shows that there is not much difference in the principal stress between the two levels in this area.