临时挡水土坝在万安枢纽二线船闸工程中的应用  

Application of temporary water and soil retaining dam in second line shiplock project of Wan’an junction

作　　者：阚得静 吴志龙 KAN De-jing;WU Zhi-long(CCCC Water Transportation Consultants Co.,Ltd.,Beijing 100007)

机构地区：[1]中交水运规划设计院有限公司,北京100007

出　　处：《水运工程》2022年第S01期145-148,共4页Port & Waterway Engineering

摘　　要：土坝因取材方便、造价低廉,广泛应用于水利、水运工程建设中,其主要作用是防洪、发电及灌溉等。万安枢纽二线船闸中的临时挡水土坝(二期围堰)是在上闸首附近土坝段拆除后,承担原土坝的功能,同时也是保证船闸正常施工和水库安全的重要临时工程。由于库区内高水位的影响,临时挡水土坝对变形稳定和渗透稳定均有较高要求。作为船闸施工期间维持水库和发电厂正常运营的临时性挡水建筑物,其建筑物级别等同于原土坝(1级建筑物),筑坝材料的质量标准与原土坝相同,工程造价高于其他施工围堰。本文主要结合其设计过程中的特点、要点及工程造价等方面进行了分析,为类似项目提供借鉴参考。Earthdam is widely used in water conservancy and water transportation projects because of its convenient materials and low cost, its main functions are flood control, power generation and irrigation. The temporary water and soil retaining dam(the second phase cofferdam)in the second line shiplock of Wan’an Junction is to assume the function of the original earth dam after the earth dam section near the upper sluice head is removed, and it is also an important temporary project to ensure the normal construction of the shiplock and the safety of the reservoir. Due to the influence of high water level in the reservoir area, the temporary water and soil retaining dam has higher requirements for deformation stability and seepage stability. As a temporary water retaining structure to maintain the normal operation of reservoirs and power plants during the construction of shiplock, its building grade is equal to the original earth dam(Grade 1 building),the quality standard of dam materials is the same as that of the original earth dam, and the project cost is higher than other construction cofferdams. In this paper, the characteristics of the design process, key point, engineering cost and other aspects are analyzed to provide a reference for similar projects.

关 键 词：临时挡水土坝 施工围堰 建筑物级别 工程造价 

分 类 号：U641[交通运输工程—船舶及航道工程]