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10月13日，中國電建設計施(shi)工的國家“十四(si)五”規(gui)劃重大(da)工程——華電金(jin)上葉巴灘水電站正式下閘蓄水，標志著我(wo)國在(zai)建海拔最(zui)高(gao)的混凝土(tu)雙(shuang)曲(qu)拱壩電站正式進入首批機組投(tou)產發電沖刺階段。 葉巴灘水(shui)電(dian)(dian)(dian)(dian)(dian)站(zhan)由中國(guo)電(dian)(dian)(dian)(dian)(dian)建(jian)所屬(shu)成都院規(gui)劃(hua)論證(zheng)并全階段勘測設(she)計，西北院承擔主體工程(cheng)監理，水(shui)電(dian)(dian)(dian)(dian)(dian)四(si)(si)局(ju)、水(shui)電(dian)(dian)(dian)(dian)(dian)五局(ju)、水(shui)電(dian)(dian)(dian)(dian)(dian)七(qi)局(ju)、水(shui)電(dian)(dian)(dian)(dian)(dian)九局(ju)、水(shui)電(dian)(dian)(dian)(dian)(dian)十一局(ju)參與建(jian)設(she)，位(wei)于四(si)(si)川甘孜白玉縣和西藏(zang)昌都貢覺縣交界(jie)處，是(shi)(shi)金沙(sha)江上(shang)游(you)規(gui)劃(hua)“一庫十三級”開(kai)發的第7級電(dian)(dian)(dian)(dian)(dian)站(zhan)，為金沙(sha)江上(shang)游(you)川藏(zang)段最大(da)的電(dian)(dian)(dian)(dian)(dian)站(zhan)，也是(shi)(shi)國(guo)家“十四(si)(si)五”能源發展(zhan)重點項目和西電(dian)(dian)(dian)(dian)(dian)東送接續能源基地(di)骨干工程(cheng)。電(dian)(dian)(dian)(dian)(dian)站(zhan)壩址區海拔約(yue)3000米(mi)，總裝機224萬千瓦，最大(da)壩高(gao)217米(mi)，相當于70多層(ceng)樓高(gao)。截至目前，部分壩段已(yi)澆筑至頂(ding)，機電(dian)(dian)(dian)(dian)(dian)安(an)裝已(yi)基本就緒，正在進行(xing)設(she)備(bei)調試(shi)。 下閘蓄(xu)水是工程建設的“終極考驗(yan)”，面對(dui)(dui)高水位、高流速下閘的嚴峻(jun)挑戰，項目管理團隊邀請權威專家評審下閘方案(an)，開展(zhan)應急預案(an)桌(zhuo)面沙(sha)盤演練，運(yun)用水下3D聲吶設備對(dui)(dui)門槽及底(di)檻進(jin)行精(jing)確探測，全(quan)面保障下閘過程安全(quan)可控。 葉巴灘蓄水(shui)分兩個階段(duan)進(jin)行(xing)(xing)。第一階段(duan)水(shui)位蓄水(shui)至死水(shui)位2855米，為今年年底實現首批機(ji)組(zu)投產發(fa)電創造條件；第二階段(duan)預計(ji)到2026年10月，將(jiang)蓄水(shui)至正常(chang)蓄水(shui)位2889米，屆時可(ke)更大(da)程度發(fa)揮(hui)金沙江上游(you)梯級電站聯合調度運行(xing)(xing)能力。 工(gong)(gong)(gong)程建(jian)設面臨高(gao)(gao)(gao)寒、高(gao)(gao)(gao)海(hai)(hai)拔(ba)、高(gao)(gao)(gao)壩(ba)、高(gao)(gao)(gao)邊坡(po)等世界(jie)級技(ji)(ji)術(shu)挑戰。項目團(tuan)隊歷(li)經20余載前(qian)期(qi)研(yan)究和科技(ji)(ji)攻關(guan)，在建(jian)設階段成功應對(dui)兩次(ci)白(bai)格堰塞(sai)湖影響，解決了構造發(fa)育(yu)、深卸荷發(fa)育(yu)的復雜(za)地基筑壩(ba)問題，攻克了高(gao)(gao)(gao)寒高(gao)(gao)(gao)海(hai)(hai)拔(ba)特高(gao)(gao)(gao)拱壩(ba)溫控、冬(dong)季連續施工(gong)(gong)(gong)等技(ji)(ji)術(shu)難題。通過技(ji)(ji)術(shu)創新，建(jian)設團(tuan)隊在我(wo)國高(gao)(gao)(gao)海(hai)(hai)拔(ba)嚴寒地區首次(ci)實現(xian)大壩(ba)混(hun)凝土全年無(wu)(wu)間斷高(gao)(gao)(gao)質量施工(gong)(gong)(gong)，創下大壩(ba)無(wu)(wu)一條溫度(du)裂縫(feng)的工(gong)(gong)(gong)程奇跡。特別(bie)是通過工(gong)(gong)(gong)期(qi)優化和蓄水規(gui)劃方案優化，設計團(tuan)隊將(jiang)導流(liu)洞(dong)下閘(zha)至(zhi)首臺機組(zu)發(fa)電的工(gong)(gong)(gong)期(qi)由(you)可研(yan)階段的8個月優化至(zhi)3個月，為(wei)工(gong)(gong)(gong)程提前(qian)蓄水發(fa)電奠定了堅實基礎。 葉巴灘(tan)電站全(quan)面投產后(hou)，年均發電量(liang)將達102億千瓦時，相當于每年減(jian)少(shao)燃煤近(jin)400萬(wan)噸，減(jian)排二氧化(hua)碳737萬(wan)噸，對(dui)于優化(hua)我國能源結構(gou)，促進當地(di)經濟社會(hui)發展具有(you)重要(yao)意義(yi)。
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