Abstract: This paper presents a new method for settlement monitoring of dam core wall with shape accel array. The shape accel array has the advantages of high precision, high stability, large scale and so on, which has a wide application prospect in the settlement monitoring field for high rockfill dams. In this paper, the basic principle of shape accel array is introduced, and the key technical indexes applied in the high rockfill dam are studied. Then the application of shape accel array at Lianghekou hydropower station is introduced. The results show that the monitoring results are continuous and reliable, and the settlement distribution and change law of the core wall dam along the dam axis are well reflected, which is of great significance for similar projects. Finally, the application of shape accel array in the settlement monitoring of high embankment dam is proposed and the application is recommended for similar projects.

Key words: high embankment dam, shape accel array, settlement monitoring, compatible deformation

摘要： 提出了采用柔性测斜仪来监测大坝心墙沉降的新方法。柔性测斜仪具有高精度、高稳定性、大量程等技术优势，在高土石坝沉降监测领域应用前景广阔。笔者首先介绍了柔性测斜仪的基本原理，对其在高土石坝中应用的关键技术指标进行了研究。随后介绍了柔性测斜仪在两河口水电站的应用情况，结果表明仪器监测成果连续可靠，较好地反映了砾石土心墙坝沿坝轴线沉降分布及变化规律，对类似工程具有很好的借鉴意义。最后对柔性测斜仪在高土石坝沉降监测中的应用提出了展望，建议在同类工程中推广应用。

关键词: 高土石坝, 柔性测斜仪, 沉降监测, 协调变形