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现拟设计方案的桐子林水电站闸坝工程是建于深厚而抗力及抗渗能力低的粉砂质粘土覆盖层软基上的，计划采用结构型式较特殊且迄今在坝工界很少被采用的大型钢筋混凝土沉井和承重墙加固措施，对软基进行围固，形成复式“井”字形网格传力结构体系，设想将来自上部闸坝等结构的荷载经该体系直接传递到基岩中去，以减少坝基的开挖量，节省工程投资。本文据工程的地质条件、结构特性、现拟设计方案及可能的施工过程，从工程的渗流和稳定要求等方面进行了多种工况的非线性有限元计算分析，评估闸坝段区的渗流、结构受力及稳定特性，初步研究论证了软基建坝和现拟设计方案的可行性
The proposed project Tongzilin Hydropower Station sluice dam project is built on the soft and soft foundation of silty clay with low resistance and impermeability, and it is planned to adopt a special structure type and so far it is rarely used in the dam industry Of the large reinforced concrete caisson and bearing wall reinforcement measures to surround the soft foundation to form a complex “well” -shaped grid power transmission structure system, the assumption that the structure from the upper dam and other structures directly transmitted to the bedrock In order to reduce the amount of excavation of the dam foundation to save engineering investment. Based on the geological conditions, structural characteristics, present design plans and possible construction processes of the project, nonlinear finite element analysis and calculation of various working conditions are carried out in terms of seepage and stability requirements of the project to evaluate the seepage of sluice sections , The structure of the force and the stability of the characteristics of a preliminary study demonstrated the feasibility of soft foundation dam and the proposed design