Abstract: Based on topographic and geological conditions, two design schemes for toe slab foundation are advanced, namely foundation on bedrock or on overburden. By analysis in aspects such as project cost, construction period, implementation difficulty and et al., foundation on overburden is chosen as the final scheme.

Key words: toe slab foundation, comparison and selection of design schemes, bedrock, overburden

摘要： 基于地形条件和地质构造，拟定化乐水库大坝趾板基础设计方案一为趾板基础建在基岩上，方案二为趾板基础建在覆盖层上。从工程造价、施工工期、施工难度等方面综合分析，最终选择方案二作为化乐水库大坝趾板基础设计方案。

关键词: 趾板基础, 设计方案比选, 基岩, 覆盖层