一、概述葛洲坝水利枢纽,参照国内外经验,在第一期工程的二江泄水闸、三江冲沙闸的大型弧门支铰锚固上,采用了预应力钢丝束拉锚,总共布置镦头锚束1,938束,锚束总长27,000米,单根锚束最大张拉力345吨,总张拉吨位近50万吨.二江泄水闸和三江冲沙闸是枢纽主要泄洪、冲沙建筑物.二江泄水闸闸型为开敞式,闸孔挡水采用双层闸门,上扉为平板门,下扉为弧门,弧门尺寸为12 I. Overview Gezhouba Hydro Project, with reference to domestic and foreign experience, in the first phase of the project of the two rivers sluice, Sanjiang red sand gate of large arc door anchor, the use of prestressed steel wire bundle pull anchor, a total arrangement of upsetting anchor Beam 1,938 bundles, anchorage bundle total length of 27,000 meters, the maximum tension of single anchor bundle 345 tons, the total tension of tonnage of nearly 500,000 tons .East of the Yangtze River sluice and Sanchong flushing sand gate is the hub of the main flood discharge, red sand building. The sluice gate type is open type, the sluice gate adopts the double gate, the upper gate is the slab gate, the lower gate is the arc gate, and the arc gate is 12