清江隔河岩水库区地壳应力场的基本特征

根据震旦一二叠纪地层中构造变形的实际观测及卫星影象解译资料，计算了清江隔河岩水库区新生代以来区域应力场的主应力方向。结果表明：主压应力为北东东向，主张应力为北北西向，现代构造应力场与新生代以来应力场基本一致。晚第三纪以来，该区构造应力场相对稳定和统一。

GENERAL FEATURES OF THE CRUSTAL STRESS FIELD lN THE AREA OF QlNGJIANG GEHEYAN RESERVOIR

Based on the data of practical observation of tectonic deformation in the strata of Sinian-Permian period and satellite imagery interpretation, the orientations of maximum principal stress during the Cenozoic era and neotectonic movement in the area of Qingjiang Geheyan reservoir are calculated. The result shows that the orientation of principal compressive stress and principal tensile stress is NEE and NNW respectively. The modern tectonic stress field is in keeping with that since Cenozoic era. Thus it is considered that the crustal stress field in the area investigated has always been relatively stable and uniform since Neogene.