三峡工程施工期(Ⅱ→Ⅲ期)河流控制关键技术及研究  

Key Technology and Research of River Control during Construction of TGP Ⅱ to Ⅲ

作　　者：杨文俊[1] 孙志禹[2] 郑守仁 

机构地区：[1]清华大学水利系,北京100084 [2]中国长江三峡工程开发总公司,湖北宜昌443002 [3]长江水利委员会,湖北武汉430010

出　　处：《水力发电》2006年第3期63-66,89,共5页Water Power

基　　金：国家自然科学基金资助项目(9493600-2)

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。With the proceeding of the 2^rd stage construction of TGP, the open channel completed its mission after diversion, and the construction entered a transition period from the 2^rd stage to the 3^rd stage. Such as, the study on the outlet diversion in later stage met the discharge demands of the 3^rd 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 3^rd 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 47.6×10^4m^3 per month, and 21066m^3 per day.

关 键 词：导流底孔 水流衔接 截流难度 双戗截流 落差控制 RCC围堰 浇筑强度 三峡工程 

分 类 号：TV551.16[水利工程—水利水电工程]