【摘要】 随着三峡工程二期施工建设的进展,截流后导流明渠将完成使命,工程建设由二期施工向三期过渡。其间,许多关键技术创新成果经过了实践的检验:后期底孔导流的研究,满足了三期导流及围堰挡水发电水位135m的泄量要求;人工明渠双戗截流试验分析研究及截流分担落差控制技术等达到国际领先水平;三期碾压混凝土围堰施工强度之高、难度之大、工期之紧堪称世界水电工程之最。通过科技攻关,精心施工,创造了碾压混凝土浇筑多项世界纪录,最大仓面面积达到19012m2,最大月浇筑强度达47.6万m3,最大日浇筑强度达21066m3等。更多还原

【Abstract】 With the proceeding of the 2nd stage construction of TGP, the open channel completed its mission after diversion, and the construction entered a transition period from the 2nd stage to the 3rd stage. Such as, the study on the outlet diversion in later stage met the discharge demands of the 3rd stage diversion and the level of 135m produced by cofferdam retaining for power generation; the experimental study of man-made open channel closure from both berms and the technique of fall control come up to the lead of the world; the construction of the 3rd stage RCC cofferdam may be rated as the best of the world due to its great intensity, exceeding difficulty and urgent construction period, and sets the world’s record in RCC placement etc., with the maximum concrete placement area of 19012m2, the maximum concrete placement intensity of 47.6×104m3 per month, and 21066m3 per day.更多还原