Monitoring the behaviour of earth and rockfill dam. a case study of Kenyir Dam/ Mohammad Azman Asmawi

This paper described the behaviour of the dam being monitored by instruments and related facilities which installed in the Kenyir Dam . General recommendations are given for selecting long-term performance instrumentation to measure pore pressure settlement , horizontal movement , seepage and ground observation holes . Generally instrumentation was installed in embankment and foundation to monitor and to acquire important behaviour data during construction and initial filling , and long-term behaviour during the life of the dam. The instrumentation can be simple or complex depending upon the used . It should provide the data with sufficient precision to analyze performance and should cover pore pressure behaviour, seepage location and at least the areas of movement. A requirement of a program for monitoring long-term performance in a routine observation are given . The purpose of the observation is to monitor the high pore pressure , seepage and dam movement developed during construction and continued for many year after the structure were completed. Consequently continous monitoring and evaluation are necessary to see the of performance during operation stage