Seepage analysis of right abutment of sugar lake dam

不列颠哥伦比亚省海德鲁的糖湖大坝位于不列颠哥伦比亚省弗农以东约70公里处的舒斯瓦普河上。大坝为Shuswap Falls发电站的水电生产提供存储和流量调节，该发电站位于Shuswap河下游29公里处的Wilsey大坝。大坝安全是水电生产的重要组成部分。糖湖大坝经历了意想不到的季节性**通过两个坝肩的波动渗流，这需要更全面的了解，以确保**大坝的持续安全运行。**虽然大坝周围和大坝下的渗漏是正常现象，但大坝运营者必须警惕**可能导致坝肩或大坝本身内部侵蚀的渗流条件**因为内部侵蚀导致管道**是大坝常见的破坏模式。因此，需要深入了解**地质和几何条件对渗流条件的影响，以便能够**迅速识别和管理异常情况。**拟议的研究旨在(1)收集有关基岩和地表地质以及大坝及其地基的**几何形状的现有数据，(2)使用基于无人机和摄影测量的**地图收集新数据，以及(3)使用这些数据为BC Hydro创建和校准可以**模拟瞬变渗流分析的3D渗流数值模型。

BC Hydro's Sugar Lake Dam is located on the Shuswap River approximately 70 km east of Vernon, BC. The**dam provides storage and flow regulation for hydroelectricity production at the Shuswap Falls generating**station, located at the Wilsey Dam, 29 km downstream on the Shuswap River. Dam safety is a critical**component of the production of hydroelectricity. The Sugar Lake Dam experiences unexpected seasonally**fluctuating seepage through both abutments that requires a more comprehensive understanding to ensure**continued safe operation of the dam.**While seepage around and underneath dams is a normal phenomenon, operators of dams must be vigilant for**seepage conditions that can cause internal erosion in the dam abutments or the dam itself as internal erosion**leading to piping is a common failure mode for dams. Therefore, a strong understanding of the influence of the**geological and geometric conditions on the seepage conditions is needed so that unusual conditions can be**promptly identified and managed.**The proposed research aims to (1) assemble existing data on the bedrock and surficial geology and the**geometry of the dam and its foundations, (2) collect new data using a UAV and photogrammetry-based**mapping, and (3) use the data to create and calibrate a 3D numerical seepage model for BC Hydro that can**simulate transient seepage analyses.