河北丰宁抽水蓄能电站(一期)在灌浆施工中存在大量的趾板帷幕灌浆。趾板帷幕灌浆在超压的情况下容易发生趾板变形破坏,常常需要对趾板抬动变形进行24 h不间断监测。但目前用于抬动监测的设备充电时间长达8 h,每次充电后设备只能连续工作3~4 d,难以满足连续监测的需求。结合抬动监测的特点,对该设备的充电和工作模式通过微型控制系统进行了管理,缩短了抬动监测装置充电时间并降低了装置的平均工作电流。对设备进行相关技术应用后,充电时间缩减到1.8 h,设备的连续运行时间提高到134 h,提高了设备的监测效率,满足了对趾板抬动变形进行24 h不间断监测的需求。

Largely applied for the toe plate of Fengning pumped storage power station, curtain grouting easily brings about deformation to the toe plate under excessive pressure. Such uplift deformation of the toe plate requires consecutive monitoring for 24 hours a day. Nevertheless, current devices for uplift monitoring costs 8 hours to be fully charged, while only works uninterruptedly for 3-4 hours. In view of this, the working mode of the device was adjusted through micro-control according to the variation of monitoring value, and fast charging was designed by adjusting the charging current using PWM. The charging time was reduced to 1.8 hours, whereas the consecutive working time of the device elongated to be 134 hours, and meanwhile the average working current was reduced, remarkably enhancing the monitoring efficiency.