【摘要】 介绍了SS Y型短基线伸缩仪总体设计思想、整体结构和主要部件的工作原理及台站试验情况。试验结果表明 ,由于使用含铌特种因瓦棒 (为基线 )和高灵敏度的换能器、精密超微量标定平台以及有效的操作系统 ,在缩短基线的条件下 ,保持了高精度与高稳定性 ,在NS分量不大于 6m、EW分量不大于 10m的基线上 ,能记录到清晰的应变固体潮汐 ,其观测精度优于现有台站的观测水平 ,并彻底地解决了石英管炸裂、汞泄漏污染现象 ,同时 ,智能化记录控制器提高了自动化程度。更多还原

【Abstract】 In this paper, the design procedure, composition and principle of short datumline extensometer on SS Y model and the test results of the extensometor are described. Because of using the transformer with high sensitivity and the calibrator with super microdetector and taking super Nb Invar rod as datum line, the extensometer have high accuracy and stability under the shortened datum line. It can record clearly earth tide with the accuracy of better than 10 -9 when the NS component of datum line is 6 m and the EW component is 10 m. The problems of quart tube rending and mercury leaking are thoroughly overcome.更多还原