文章(zhang)來源：中國長江三峽工程(cheng)開發總公(gong)司 發布(bu)時間(jian)：2008-10-09
2007年10月1日，向(xiang)家(jia)壩(ba)水電(dian)站左岸非溢流(liu)壩(ba)段第一倉混(hun)凝(ning)土開始澆(jiao)筑(zhu)(zhu)，揭開了向(xiang)家(jia)壩(ba)水電(dian)站大壩(ba)主體混(hun)凝(ning)土澆(jiao)筑(zhu)(zhu)的序幕。
向家壩水(shui)電(dian)(dian)(dian)站(zhan)(zhan)是金沙江(jiang)下(xia)游河段四個梯級(ji)電(dian)(dian)(dian)站(zhan)(zhan)中的最下(xia)游一個電(dian)(dian)(dian)站(zhan)(zhan)，壩址位于四川省(sheng)(sheng)宜賓縣(xian)和(he)云南省(sheng)(sheng)水(shui)富縣(xian)交界處，是我國“西(xi)電(dian)(dian)(dian)東送”工程的骨(gu)干電(dian)(dian)(dian)源點，以發(fa)電(dian)(dian)(dian)為主，同時改善(shan)通航條件，結合防洪和(he)攔沙，兼顧灌溉，并且(qie)具(ju)有(you)為上游梯級(ji)進行反調節(jie)的作用(yong)。向家壩水(shui)電(dian)(dian)(dian)站(zhan)(zhan)正常(chang)蓄(xu)水(shui)位380米，水(shui)庫總庫容51.6億(yi)立方米，電(dian)(dian)(dian)站(zhan)(zhan)設(she)計安裝8臺單機(ji)80萬(wan)千瓦水(shui)輪發(fa)電(dian)(dian)(dian)機(ji)，設(she)計多年(nian)平均發(fa)電(dian)(dian)(dian)量307.47億(yi)千瓦時。
根據施(shi)工(gong)(gong)導流(liu)要求，主(zhu)(zhu)體工(gong)(gong)程(cheng)分(fen)兩期(qi)(qi)(qi)施(shi)工(gong)(gong)。其中(zhong)，一期(qi)(qi)(qi)工(gong)(gong)程(cheng)于2004年11月開(kai)始，在左岸河(he)(he)段修筑一期(qi)(qi)(qi)土石圍(wei)堰，進行左岸非溢流(liu)壩(ba)段、沖沙孔壩(ba)段及二期(qi)(qi)(qi)縱向混凝(ning)土圍(wei)堰施(shi)工(gong)(gong)。左岸一期(qi)(qi)(qi)導流(liu)及主(zhu)(zhu)體工(gong)(gong)程(cheng)混凝(ning)土澆筑量約305萬立方米，將于2008年汛(xun)后完(wan)工(gong)(gong)。根據施(shi)工(gong)(gong)安(an)排，將于2008年11月份進行主(zhu)(zhu)河(he)(he)床截流(liu)，開(kai)始二期(qi)(qi)(qi)工(gong)(gong)程(cheng)施(shi)工(gong)(gong)，計劃于2012年10月份水(shui)庫蓄水(shui)。