文章(zhang)來源：中國電力建設集(ji)團有(you)限公司 發布時間(jian)：2017-10-28
10月(yue)26日(ri)，深厚覆蓋(gai)層上世界在建最(zui)高壩長河壩水(shui)電站(zhan)再次迎來歷史性時刻，兩條初期導流洞成(cheng)功(gong)下閘蓄水(shui)，在不久的(de)將(jiang)來，高峽(xia)出(chu)平湖(hu)的(de)美(mei)景將(jiang)展現(xian)在世人眼前(qian)。
長(chang)河壩水電(dian)站由中(zhong)國(guo)電(dian)建(jian)所屬成(cheng)都(dou)院勘測設(she)計(ji)，水電(dian)五局、七局負責(ze)大(da)(da)(da)壩、泄(xie)洪洞施工(gong)(gong)(gong)(gong)及機組安(an)裝，水電(dian)十四(si)局承(cheng)擔(dan)廠房施工(gong)(gong)(gong)(gong)。開(kai)工(gong)(gong)(gong)(gong)建(jian)設(she)以來(lai)，工(gong)(gong)(gong)(gong)程(cheng)(cheng)(cheng)遭(zao)遇了汶(wen)川特大(da)(da)(da)地震(zhen)、響水溝泥石流災害、蘆山地震(zhen)、康定地震(zhen)等自(zi)然災害影響。中(zhong)國(guo)電(dian)建(jian)根據工(gong)(gong)(gong)(gong)程(cheng)(cheng)(cheng)實際情況精細設(she)計(ji)，科(ke)學施工(gong)(gong)(gong)(gong)，開(kai)展大(da)(da)(da)量科(ke)研攻關，充分考慮類似工(gong)(gong)(gong)(gong)程(cheng)(cheng)(cheng)經(jing)驗及新形勢下水電(dian)與環境和諧、科(ke)學開(kai)發(fa)的需要，力求方案安(an)全可靠、施工(gong)(gong)(gong)(gong)可行、經(jing)濟合理、工(gong)(gong)(gong)(gong)期(qi)最優，為工(gong)(gong)(gong)(gong)程(cheng)(cheng)(cheng)順(shun)利(li)推進奠定了堅實基礎，顯示出中(zhong)國(guo)電(dian)建(jian)在巨、大(da)(da)(da)型水電(dian)工(gong)(gong)(gong)(gong)程(cheng)(cheng)(cheng)設(she)計(ji)施工(gong)(gong)(gong)(gong)方面具有雄厚的技術實力。
長河(he)(he)壩(ba)水(shui)電(dian)(dian)(dian)站(zhan)位于(yu)四川省甘孜藏(zang)族自治州康定縣境內，為大渡(du)河(he)(he)干流“3庫22級(ji)”開(kai)發的(de)第10級(ji)電(dian)(dian)(dian)站(zhan)，攔河(he)(he)大壩(ba)最大壩(ba)高240米，壩(ba)基覆蓋(gai)層厚(hou)度(du)50余(yu)米，總(zong)裝(zhuang)機容(rong)量260萬千瓦，年發電(dian)(dian)(dian)量107.9億千瓦時。工程具有(you)超高邊坡、超高土石壩(ba)、高地(di)應(ying)力洞室(shi)群、強(qiang)震區高進(jin)水(shui)塔、高流速大功率泄洪、高強(qiang)度(du)大型復雜(za)洞室(shi)交(jiao)通(tong)等特(te)點，工程設計(ji)與建設頗具難度(du)和(he)(he)挑(tiao)戰。它的(de)建設，將利(li)于(yu)合理開(kai)發大渡(du)河(he)(he)干流水(shui)能(neng)資源，增加四川電(dian)(dian)(dian)網(wang)電(dian)(dian)(dian)力供應(ying)，合理調整能(neng)源結構，并促進(jin)“西電(dian)(dian)(dian)東送”以及民族地(di)區經濟和(he)(he)社會發展。
2016年9月28日(ri)，長河壩第一階段蓄水(shui)通過國家驗收(shou)，并開(kai)創(chuang)國內大型水(shui)電工(gong)程一個(ge)月內完成蓄水(shui)安全(quan)鑒定、蓄水(shui)階段質量(liang)監(jian)督(du)、蓄水(shui)驗收(shou)現(xian)場檢查(cha)和蓄水(shui)驗收(shou)委員會會議的先河。中(zhong)期導流(liu)洞(dong)及(ji)放(fang)空(kong)(kong)洞(dong)進(jin)口邊坡開(kai)挖被評為(wei)“質量(liang)示范區(qu) ”，泄(xie)(xie)洪(hong)放(fang)空(kong)(kong)系統(tong)進(jin)口混凝土澆筑及(ji)3號泄(xie)(xie)洪(hong)洞(dong)洞(dong)身混凝土澆筑被評為(wei) “精品工(gong)程示范區(qu)”，泄(xie)(xie)洪(hong)放(fang)空(kong)(kong)系統(tong)及(ji)中(zhong)期導流(liu)洞(dong)施工(gong)實(shi)際工(gong)期比合同(tong)工(gong)期提前23個(ge)月。