左江水利枢纽纵向刚性围堰的优化设计

The optimization design of longitudinal rigid cofferdam of the Zuojiang multi-purpose dam project

左江水利枢纽工程一期纵向刚性围堰原为浆砌石断面,为了加快工程施工的进程,对一期纵向刚性围堰断面进行优化,利用左江水利枢纽坝址混合料较多的特点,用混合料做混凝土刚性堰体。通过优化设计的最优断面,减少了工程量,节约了投资,加快了施工进程,并经过了1993年5月份设计洪水标准的考验。

The first term longitudinal rigid cofferdam were originally grouted rubble section. To quicken the pro- ject construction pace, the first term longitudinal rigid cofferdam were optimized and the mixture were used for concrete rigid cofferdam body. The optimization design scheme decreased the engineering quantity, saved in- vest, quicken the construction pace and passed the design flood standard test in March, 1993.