浮标水位仪对水井水位振动的响应
THE RESPONSE OF A BUOY WATER LEVEL INSTRUMENT TO FLUCTUATION OF THE WATER LEVEL IN A WELL
-
摘要: 本文列出了水位观测仪器系统满足的力学方程,讨论了方程系数的确定方法。经过对方程解的讨论,认为水位仪对水井水位振动的响应决定于仪器系统的自振频率,仪器系统的自振频率取决于浮标的浮力系数及有效质量,浮力系数取决于浮标和井管的半径,而且浮力系数对浮标半径的变化很敏感。通过计算认为,SW-40水位仪对水位振动的响应象一台固有周期为几秒的地震仪。Abstract: In this paper, the mechanical equation that is suitable for the instrument system of water level observation is given The methods that determine the coefficient of the souation are discussed. On the basis of the discusion of the solutions of the equation, it is suggested tht the response of a water level instrument to fluctuation of the water evel in a wall depeale on the natural frequency of a instrument system, the natural frequency of a instrumen systen dePends on buoyancy coefficient of a buoy and effective mass, the buoyancy coefficielt depends on the radius of a buoy and a well caing. Furthermore, the buoyancy coefficient in very sensitive to the variation of a buoy radius. Based on calculation it is considered thatthe response of a water level instrument SW-40 to fluctuation of level in a wall is like that of seismograph whose natural period is several seconds.
-
[1] Rcxin, E.E., Jack Oliver, and David Prentiss, Scismically-induced fluctuations of the water level in Nunn Bush well in Milwaukee, Bull. Seismol. Soc. Am., 52, 17-25, 1962. [2] CooPer, H. H., et al., The response of well-aquifer systems to seismic waves,J. G. R., Vol. 70, No. 16, 3915-3926, 1965. [3] 铁木辛柯著,谈峰译,机械振动学,科学出版社,1958.
[4) 神保泰雄,线性振动,诚文堂新光社,1961.[4] W. T.汤姆逊著,胡宗武等译,振动理论及其应用,煤炭工业出版社,1980. [5] 中国科学院地球物理研究所,地震仪器概论,科学出版社,1975. -
点击查看大图
计量
- 文章访问数: 1691
- HTML全文浏览量: 414
- PDF下载量: 136
下载:
