Application of Capacitive Strain Transducer in Geostress Survey

Abstract

In order to meet the requirements of high precision and large measuring span in borehole strain measurement, RZB capacitive strain transducer is designed by establishing the relationship between capacitance and micrometric displacement. A preliminary analysis was conducted on the data observed through Sichuan Shimian Station RZB capacitive borehole strain gage by applying the transducer in the borehole strain gauge. The analysis results show that RZB capacitive borehole strain gauge is high in observation accuracy and can record clear solid tides and broadband stain seismic waves.