水工防渗帷幕方案论证及后评价技术

水工防渗帷幕作为大型“地下挡水建筑物”，通常因建设条件隐蔽、技术复杂、造价高昂而构成工程兴建的关键要素或决策焦点，制约工程成败。以一大型防渗帷幕工程论证为载体，阐述了坐落于复杂岩溶暗河背景下的防渗方案论证、优化比选、节点路径等关键技术，并探讨了地下幕体施工质量的“后评价”技术。纵观该工程从前期论证、实施到运行的全过程，均已做到了精心、精准和精确到位（可靠性），取得了全面的成功，具有一定的推广应用价值，可为我国其他同类工程提供参考和借鉴。

A hydraulic anti-seepage curtain scheme and post-evaluation technique

As a large underground water-blocking structure, anti-seepage curtain is usually very crucial to the success of a hydraulic project, because its enshrouded construction condition, complex techniques, high cost of construction. Based on a large-scale project of anti-seepage curtain located in a complicate karst condition, the author mainly expounds the key techniques of the plan demonstration, optimizing comparison, node path, and also the post-evaluation of the underground curtain construction quality. Throughout the project, from feasibility study, construction work to the final function phase, nothing but accurate and precise work was done, which contributed to a total success. The results have certain application value, and can be for reference of other similar projects.