电厂取排水口海域临时围堰施工技术

Construction Technology on Temporary Cofferdam for Outlets of Drawing Water and Draining Water at Power Plant in Sea Area

本文采用理论计算、物模验证等措施初步确定围堰的结构形式,并严格按照方案进行施工。通过实际应用证明,采用充填砂袋为堤心、扭王字块+栅栏板为护面、倒"T"型块压顶、钢板桩支护形成的临时围堰结构,能够达到阻水、破浪、防越浪、防管涌及止水的目的,且围堰整体稳定性高。电厂取排水口海域临时围堰施工技术主要适用于以粉质黏土、粉土、粉砂、砂为主的临河、临海工程,也适用于粉土、粉砂及砂为主的湖泊围湖造地等基坑开挖工程。

This paper used theoretical cealcultions,physical model verification and other measures to itially determine the structure type of the cofferdam,and strictly fllowed the construction.The actual application proves that the sandbag is used a the embankment core,and the twisted king block adding the fence board is used as the protective surface.The temporary cofferdam structure formed by the“T”block jacking and the steel sheet pile slope protection can achieve the purposes of blocking water,breaking waves,preventing over waves,preventing piping and sopping water.And the overall stability of the offerdam is high.The construction technology of the temporary offerdam in the water drawing and draining area of the power plant is mainly applicable to river and sea projects mainly composed of silty clay,silt,silt and sand.It can also be used for excavation and construction of foundation pits such as silt,sil and sand.bused lakes.