论文部分内容阅读
在振动台上测定了ZSM-Ⅲ型重力仪的固有周期,发现在50～300赫兹之间出现数个共振频带。野外地面振动的测试结果亦表明重力测点的振动频率有时会超过50赫兹。这种振动将会影响重力观测的精度。为了减弱振动的影响,文中提出了一些措施,例如加海绵垫等。实验证明是有效的。
The inherent period of the ZSM-Ⅲ gravimeter was measured on a vibrating table and several resonance bands appeared between 50 and 300 hertz. Field ground vibration test results also show that the vibration frequency of gravity points sometimes exceed 50 Hz. This vibration will affect the accuracy of gravity observations. In order to reduce the impact of vibration, the article proposed some measures, such as adding sponge pad and so on. Experiments prove to be effective.