This paper presents an evaluation of the behavior of an embankment dam that has been in operation for nearly 40 years in Colombia. La Esmeralda Dam belongs to the Chivor Hydroelectric Project and is an earth-core rockfill dam (ECRD) that was constructed between 1972 and 1975. The dam is 237 m high with 1.8H:1.0V slopes both in the upstream and downstream faces; the dam core dips slightly upstream and is protected on both sides by granular filter and transition materials; the outer shells consist of rockfill originally obtained from the excavations required for the spillway and from an outside quarry. This paper is based on instrumentation data that included piezometers installed in the compacted fill and the grout curtain, level survey points located at the crest and on the dam faces, total stress cells, and weirs for measurement of seepage flow. An evaluation of instrumentation measurements obtained throughout the years of operation and their significance regarding dam behavior are discussed.
展开▼
机译：本文对在哥伦比亚运营了近40年的堤坝的性能进行了评估。 La Esmeralda大坝属于Chivor水电项目，是土心堆石坝（ECRD），建于1972年至1975年之间。该坝高237 m，在上游和下游面都有1.8H：1.0V的坡度。坝芯向上游略微倾斜，并在两侧受到颗粒过滤器和过渡材料的保护。外壳由最初由溢洪道所需的开挖和外部采石场获得的堆石组成。本文基于仪器数据，其中包括安装在压实填料和灌浆幕中的测压计，位于波峰和坝面的液位测量点，总应力单元以及用于测量渗流的堰。讨论了在整个运行年中获得的仪器测量结果的评估及其对大坝行为的意义。
展开▼
