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混凝土坝的内部观测仪器,在长期观测过程中,因测量系统的绝缘下降,以及电缆电阻变差等,使测值产生系统误差,降低了可靠性。文章提出了预防与延缓电缆绝缘下降的措施。
During the long-term observation, the internal observation instruments of concrete dams will cause systematic errors in the measured values and reduce the reliability due to the decrease of the insulation of the measurement system and the deterioration of the cable resistance. The article puts forward measures to prevent and delay the drop of cable insulation.