文(wen)章來源：國家(jia)電(dian)網(wang)公(gong)司 發(fa)布(bu)時間：2010-09-02
2009年8月29日上午8時，向(xiang)家壩-上海±800kV特高壓直(zhi)流輸電線(xian)路(lu)工程扎營港(gang)長(chang)江(jiang)大(da)跨(kua)越(yue)標段架(jia)線(xian)施工現(xian)場，動(dong)力拖船拖著第一根迪尼(ni)瑪繩由(you)北岸(an)(an)平穩駛向(xiang)南(nan)岸(an)(an)，9時整順利(li)跨(kua)過長(chang)江(jiang)。隨后，第二(er)根迪尼(ni)瑪繩也于11時整順利(li)到達南(nan)岸(an)(an)。扎營港(gang)長(chang)江(jiang)大(da)跨(kua)越(yue)正式(shi)進(jin)入架(jia)線(xian)施工。
向家壩—上海特高(gao)壓(ya)(ya)直(zhi)流線路工(gong)(gong)程自西向東先后在湖北楊家廠、胡家灘、扎營港和安徽新(xin)吉陽四(si)次跨(kua)(kua)越長江。大跨(kua)(kua)越工(gong)(gong)程是向上特高(gao)壓(ya)(ya)直(zhi)流線路工(gong)(gong)程按期建成的(de)瓶頸之(zhi)一(yi)，特高(gao)壓(ya)(ya)建設(she)部高(gao)度重(zhong)視，提前策劃，提早安排(pai)，明確提出了各項計劃和要(yao)求(qiu)。通過湖北、安徽省(sheng)公(gong)司的(de)努(nu)力協調和直(zhi)流公(gong)司的(de)精(jing)心(xin)組(zu)織以及四(si)個大跨(kua)(kua)越工(gong)(gong)程設(she)計、監理、施(shi)工(gong)(gong)和材料(liao)供應單位的(de)努(nu)力工(gong)(gong)作(zuo)，工(gong)(gong)程進展(zhan)順利(li)。
扎(zha)營(ying)港(gang)長江大跨越采(cai)(cai)用(yong)“耐—直(zhi)—直(zhi)—耐”的跨越方式，全(quan)(quan)長2718m，主跨長度(du)1733m，線(xian)(xian)路(lu)按單回路(lu)設計(ji)。導(dao)線(xian)(xian)采(cai)(cai)用(yong)四分裂AACSR/EST-640/290 特強(qiang)鋼芯(xin)高強(qiang)鋁合金絞線(xian)(xian)；地線(xian)(xian)一(yi)根采(cai)(cai)用(yong)JLB14-340鋁包鋼絞線(xian)(xian)，另(ling)一(yi)根采(cai)(cai)用(yong)OPGW-350光(guang)纜。負責這(zhe)一(yi)跨越施(shi)工(gong)(gong)(gong)任務的湖(hu)北省輸變電工(gong)(gong)(gong)程公(gong)司高度(du)重視，高質安全(quan)(quan)地完成了(le)基礎和組塔施(shi)工(gong)(gong)(gong)，7月份完成了(le)架線(xian)(xian)施(shi)工(gong)(gong)(gong)方案各級評審(shen)，確定了(le)二(er)乘(cheng)“一(yi)牽(qian)二(er)”同步展(zhan)放導(dao)線(xian)(xian)施(shi)工(gong)(gong)(gong)方案。為了(le)保(bao)證架線(xian)(xian)施(shi)工(gong)(gong)(gong)有條(tiao)不(bu)紊(wen)地進(jin)行(xing)，該公(gong)司嚴格施(shi)工(gong)(gong)(gong)組織，落(luo)實各項技術方案和措施(shi)要(yao)求，從技術準備、資源配置、人員資質審(shen)查、工(gong)(gong)(gong)器(qi)具進(jin)場檢驗、材料供應驗收、安全(quan)(quan)技術培訓等方面(mian)進(jin)行(xing)了(le)嚴格的規范(fan)。
目前，其余三個長江大跨(kua)越標段已基本(ben)完成了鐵塔組立施(shi)工，正(zheng)在進行(xing)鐵塔驗收(shou)準備(bei)和工序交接準備(bei)，現場進展順利，工程有望全(quan)面實現里程碑(bei)計(ji)劃(hua)和年底(di)具備(bei)帶電條件的建設目標。