RZB钻孔应变仪量程扩展的研究

为使RZB型钻孔应变仪在千米深井水压的作用下能够正常工作，设计了以陶瓷马达为核心、RS485总线为基础的远程控制机构，用以补偿传感元件的初始位移，从而实现RZB型钻孔应变仪量程的扩展，并在实验室开展了10 MPa水压的模拟实验。结果显示，装有量程扩展系统的传感器在5 MPa处超量程，经量程调节后，在10 MPa处仍能正常工作。

Study of the Range Expansion of the RZB Borehole Strain Meter

To make the RZB borehole strain meter work normally under kilometer depth, a range extension mechanism was designed. Based on a ceramic motor and the RS485 bus, the mechanism can remotely make up for the deformation caused by water pressure and achieve the goal of the range extension. Some simulation experiments for up to 10 MPa pressure were performed in the laboratory, and the test results showed that: the sensor 1 was over range under the pressure of 5 MPa| after the range extension, the sensor 1 worked well under the pressure of 10 MPa.