流清河砌石双曲拱坝,利用脉动、小药量爆炸和土火箭反冲激振方法,进行坝体动力特性实测。实测资料表明,各种不同激振方法所得成果甚为一致,坝体基本频率为3.60HZ,其对应振型为正对称型,与国内外同类型砼拱坝原体实测资料也基本相近。 Flow Qinghua masonry double-curvature arch dam, the use of pulsations, small quantities of explosions and rockets recoil excitation method for the dynamic measurement of dam body. The measured data show that the results obtained by different excitation methods are very consistent. The dam frequency is 3.60HZ and the corresponding vibration mode is positive symmetry, which is basically similar to the measured data of the same type of concrete arch dam at home and abroad.