针对高拱坝的整体稳定问题，阐述了地质力学模型试验研究技术、方法及应用。地质力学模型，在材料模拟方面，除必须模拟坝基岩体的力学变形特征外，还必须模拟坝体、坝基内部各种不连续面，如裂缝、断层、软弱夹层及具有显著连通率的节理裂隙的分布和力学性能，以及建筑物基础岩体的非线性特征。它不仅限于研究已知荷载条件下的某一状态，更重要的是研究在渐增荷载作用下直至破坏的整个变化过程，给出一个相当明显的形象直观概念和量值结论。锦屏高拱坝是目前世界上在建的最高双曲薄拱坝，大坝承受水压力巨大，坝址地质条件复杂，其设计和分析都是超出现行规范，使锦屏高拱坝的稳定安全性成为人们极为关注的问题。采用地质力学模型试验进行研究分析，以验证与评价锦屏高拱坝的整体稳定安全性，具有十分重要的意义。

The technique, method and its application of a geomechanical model used for studying the entire stability problem of high arch dam are discussed. In geomechanical model on material simulation, except that rock deformation parameters of rock must be simulated, discontinuous surfaces in dam or rock mass, such as cracks, faults, soft interlayers, the distribution of obvious connecting joints and fissures, and non-linear characteristics of rock in dam base, must be simulated. It does not only provide a state under a given load, but also gives a visual view and quantitative results by studying a changing process from deformation to destruction under gradually increasing load. Jingping Dam is the highest hyperbolic and thin arch dam among constructing arch dams in the world. Since huge water pressure and complex geology condition, the design and analyses to the dam are out of current codes. So the stability safety of Jingping Dam is a remarkable problem. That geomechanical model is applied to estimate and validate entire stability of Jingping High Arch Dam has a very important signification.