三峡工程三期碾压混凝土围堰拆除综述

自然杂志 ›› 2007, Vol. 29 ›› Issue (1): 41-41.

三峡工程三期碾压混凝土围堰拆除综述

孙志禹

博士，中国长江三峡工程开发总公司，宜昌 443002

收稿日期:2006-10-09 出版日期:2007-02-25 发布日期:2007-02-25

Summarization of the Third Roller Compaction Concrete Cofferdam Removing in the Three Gorge Project

SUN Zhiyu

Doctor, China Yangtze Three Gorges Project Development Corporation, Yichang 443002

Received:2006-10-09 Online:2007-02-25 Published:2007-02-25

摘要/Abstract

摘要： 三期RCC围堰挡水发电3年多，期间承担了三峡工程初期发电与航运的重任，并保障了三期施工安全。根据施工进度安排，为满足发电及纵向围堰坝身段排漂过流条件，必须于2006年汛前完成拆除工作。由于RCC拆除方量大、距右岸大坝近、规模超大，为达到安全顺利的拆除并保证已建大坝正常运行，通过一系列的科研和现场试验最终选定的爆破倾倒施工方案于2006年6月6日顺利实施，各项监测数据表明该方案满足了设计要求。三期RCC围堰爆破拆除装药量192吨、爆破网络分段959段均为世界之最，如此大规模的爆破施工自方案拟定至工程实施更无经验可以借鉴，它的成功实施再一次极大地提升了我国控制爆破的水平。

关键词: 三峽, 碾压混凝土, 拆除

Abstract: The third roller compaction concrete cofferdam of the Three Gorge Project (the 3rd RCC) burdened the initial stage 3 years navigation and power generation after it was builded.In order to keep the pace of construction, the 3rd RCC had to be removed before flood season in 2006. A series of researches and tests were put into effect to ensure the security of the dam. The last designate plan (the topple ove plan of blasting construction) was carried out smoothly in June 6, 2006. The monitor data shew that the plan met the design idea very well. It was a grand blasting of unprecedented size: The charge is 192t, the section of blasting is 959. Its success promoted our control blasting greatly.

Key words: Three Gorge Project, roller compaction concrete, removing

MSC2000:

Progress

孙志禹. 三峡工程三期碾压混凝土围堰拆除综述[J]. 自然杂志, 2007, 29(1): 41-41.

SUN Zhiyu. Summarization of the Third Roller Compaction Concrete Cofferdam Removing in the Three Gorge Project[J]. Chinese Journal of Nature, 2007, 29(1): 41-41.