( 5 ) the author researches the seepage characteristics of longtan rcc dam by finite element method ( fem ) , and concludes the best suitable seepage control scheme of the dam after analysis in so many cases ( 5 )在对龙滩高碾压混凝土重力坝渗流特性进行分析时，就有关主要渗流影响因素进行众多计算工况的比较分析研究，得出大坝的最终优选渗控方案。
The foundation of baise gravity dam has bad geological phenomena such as high elastic modulus ratio , joint fissures and large faults etc . , so stability of baise gravity dam is the essential technical problem to project ' s success 百色重力坝地质条件复杂，地基岩体具有高模量比、节理裂隙发育等不良地质现象。百色重力坝的稳定性是事关工程成败的关键技术问题。
( 3 ) generally , dam and base are operated in material viscidity status . by studying on the creep model of dam concrete and base rock , and combined them together , the coupling model of these factors is bringing forward ( 3 )通过研究坝体混凝土徐变模型和坝基岩体的蠕变模型，并将两者有机结合，分别针对混凝土重力坝和拱坝，提出了考虑坝体徐变和坝基蠕变相互作用的组合模型。
Firstly , fundamental formulations of finite element method about plane problem in elastic mechanics were deduced , some principles about concrete gravity dam were discussed , stress of concrete gravity dam under static load were solved 首先，推导了弹性力学平面问题的有限元基本公式，并讨论了混凝土重力坝有限元计算的一些处理原则，解决了静力工况下混凝土重力坝的应力计算问题。
Finally , respect to the beam effect induced by special high ratio of modulus of elasticity of baise gravity dam , the sensitivity analysis are carried out to study the relation among displacement , stress state of dam and rock bed parameters 最后，针对百色重力坝特殊的高弹模比地质条件所致悬臂效应，对坝体及坝基的变形和应力状态与坝基力学参数之间的关系进行了参数敏感性分析。
On the basis of optimum control solution theory , the dynamic parameter discernment model of concrete gravity dam under the priori restraint conditions has been set up and a restraint variable - dimension method for finding the solutions of such model has been put forward 基于最优控制解的理论，建立了引入先验约束条件的混凝土重力坝动态参数识别模型，提出了求解该模型的约束变尺度方法。
