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本文所使用的三维地应力场分析成果，是以１９８４～１９９４年１０年间在三峡左岸船闸区获得的８个深钻孔和５个浅钻孔计６２个测段的地应力实测资料为依据，并考虑到地形、地貌和地质构造等方面的特点而进行的数值计算反演分析。计算域为２４００ｍ×１４００ｍ×１４５０ｍ，包括了部分左岸坝段及船闸的一～五闸室。文章分析了计算成果，并给出了船闸坐标系下三闸首的应力分量随深度变化的直线方程，简要的阐述了船闸区地应力场的分布规律。
The three-dimensional geostress analysis results used in this paper are based on the measured data of 62 deep boreholes obtained from 8 deep boreholes and 5 shallow boreholes in the left bank of the Three Gorges Reservoir from 1984 to 1994, And taking into account the topography, geomorphology and geological structure of the characteristics of the numerical calculation of the back analysis. The calculation field is 2400m × 1400m × 1450m, including a part of the left bank of the dam and the lock of one to five lock chamber. The paper analyzes the calculation results and gives a straight line equation of the stress components of the three locks under the ship lock coordinate system with depth. The distribution of the ground stress field in the ship lock zone is briefly explained.