根据三峡电站压力管道仿真材料大比尺平面结构模型是国内外同类模型中规模最大，加载技术复杂的特点，首次研究采用组合压力钢枕施加内压荷载，施压均匀，加载效果好，完成了模型超载破坏试验，取得了规律性好、对三峡工程管道设计具有重要参考价值的成果． According to the large scale structure model of the pressure pipeline simulation materials of the Three Gorges Power Station, which is the largest scale and complex loading technology in the similar models both at home and abroad, the first study applied internal pressure with a combination of pressure and steel pillows, with uniform pressure and good loading effect. Model overload destruction test, obtained a good regularity, the Three Gorges Project pipeline design has important reference value of the results.