以加速度势为待求变量 ,在水动力学线性理论的框架下 ,建立了承船厢在升降过程受到加速度激励时 ,厢内流体和船体运动的求解方程 ;考虑了流体和船体运动间的耦合效应 .问题用边界元方法求解 ;利用 Green函数的一种几何约束 ,减轻了场点与源点重合时造成的奇异性 ,以及流域角点处确定立体角的麻烦 .对自由表面的网络进行了特殊的划分 ,可适应多艘船舶在自由面上任意布置的情形 .通过对程序进行多方面的验证 ,表明文中的理论和数值计算是合理的 ,可以用之于三峡升船机总体数值模拟的计算 Taking the acceleration potential as the variable to be sought, a solution equation of the fluid and hull movement in the compartment is established under the framework of the hydrodynamic linear theory. The coupling effect between fluid and hull movement is considered . The problem is solved by the boundary element method. By using a geometric constraint of the Green function, the singularity caused by the overlap between the field point and the source point is reduced, and the solid angle is fixed at the corner of the drainage basin. The free surface network is specially Of the ship can be arbitrarily arranged on the free surface of a number of ships situation.Through the verification of the program in many ways, the paper shows that the theory and numerical calculation is reasonable, can be used in the Three Gorges ship lift numerical simulation of the general calculation