黑泉面板坝所处河床的冲积覆盖层较厚，基岩裂隙发育，岩体破碎。按传统的观点，趾板须建在坚硬、耐冲蚀且可灌的基岩之上，这样，挖深较大，且受上游围堰基础及渗流的影响。为此，设计根据萨尔瓦兴娜工程的经验及库克新近提出的“设置一个标准宽度的锚固趾板，并提供一个下游防渗混凝土板密封结构来满足需要的水力梯度”的趾板设计新概念，确定将趾板建基面基本置于强风化下限与弱风化上限之间。受地形地质条件的制约，当布设常规趾板难以与面板相接时，采用高趾墙结构将具有很大的经济性。对趾板设计的要点作了介绍。 The alluvial cover of the riverbed where the black spring dam is located is thick, and the bedrock cracks developed and the rock mass was crushed. Traditionally, plinths had to be built on top of hard, erosion-resistant and potable bedrock so that the digging depth was greater and affected by the upstream cofferdam foundations and seepage. To this end, the design of the toeboard design based on the experience of the Salvahina project and Cook’s recent proposal to “set a standard width anchorage toeboard and to provide a downstream impermeable concrete panel seal structure to meet the required hydraulic gradient” New concept, it is determined that the basic surface of plinth will be placed between the lower limit of strong weathering and the lower limit of weathering. Constrained by the topography and geological conditions, when laying conventional plinth difficult to connect with the panel, the use of high toe wall structure will have great economic. The plinth design of the main points were introduced.