１９９９年是三峡工程进入二期坝体混凝土浇筑的第一个高峰年，年计划浇筑混凝土４４８万ｍ３。１～６月，已完成主体工程混凝土浇筑１５０．７万ｍ３，是上半年计划的８７．８％。１～６月已进入５９５２个单元工程的质量评定，工程质量全部合格，优良率为７２．９％。其中， 1999 is the first peak year of the Three Gorges Project entering the second phase of concrete pouring. The planned annual pouring of 4.48 million m3 of concrete is from January to June. The main project has completed the pouring of 1.57 million m3 of concrete, which is the first half of the planned 87 .8%. From January to June, the quality of 5952 units has been assessed. The quality of the project is all qualified with an excellent and good rate of 72.9%. among them,