文章來(lai)源：中國電力(li)建設集團有限公司 發布時間：2017-10-28
10月26日，深厚(hou)覆蓋層(ceng)上世界在建最高壩(ba)長(chang)河壩(ba)水電站再次(ci)迎來歷史性時(shi)刻(ke)，兩條(tiao)初期導流洞(dong)成(cheng)功下閘蓄水，在不久(jiu)的將來，高峽(xia)出平湖的美景將展現在世人眼前。
長河壩水(shui)(shui)電(dian)(dian)站(zhan)由中國(guo)電(dian)(dian)建(jian)所屬(shu)成都(dou)院勘測設計，水(shui)(shui)電(dian)(dian)五局、七局負責大(da)壩、泄洪洞施(shi)工(gong)(gong)(gong)及(ji)機組安裝，水(shui)(shui)電(dian)(dian)十四局承擔廠房施(shi)工(gong)(gong)(gong)。開工(gong)(gong)(gong)建(jian)設以(yi)來，工(gong)(gong)(gong)程遭遇了汶川特大(da)地震、響水(shui)(shui)溝泥石流(liu)災害、蘆山地震、康定(ding)地震等(deng)自然(ran)災害影(ying)響。中國(guo)電(dian)(dian)建(jian)根據工(gong)(gong)(gong)程實(shi)際情(qing)況(kuang)精(jing)細設計，科學(xue)施(shi)工(gong)(gong)(gong)，開展大(da)量(liang)科研攻關，充(chong)分考慮類似工(gong)(gong)(gong)程經驗(yan)及(ji)新形勢下水(shui)(shui)電(dian)(dian)與(yu)環境(jing)和諧、科學(xue)開發的需要，力求方案安全可(ke)靠、施(shi)工(gong)(gong)(gong)可(ke)行、經濟合(he)理、工(gong)(gong)(gong)期最(zui)優，為工(gong)(gong)(gong)程順利推進奠定(ding)了堅實(shi)基礎(chu)，顯(xian)示出中國(guo)電(dian)(dian)建(jian)在巨(ju)、大(da)型水(shui)(shui)電(dian)(dian)工(gong)(gong)(gong)程設計施(shi)工(gong)(gong)(gong)方面具有(you)雄厚的技術實(shi)力。
長(chang)河(he)壩(ba)水(shui)電(dian)站位(wei)于(yu)四(si)川省甘孜(zi)藏(zang)族自治州康定縣(xian)境(jing)內，為(wei)大(da)渡河(he)干流“3庫(ku)22級”開發(fa)的第(di)10級電(dian)站，攔河(he)大(da)壩(ba)最大(da)壩(ba)高(gao)(gao)240米(mi)，壩(ba)基覆蓋層(ceng)厚度50余米(mi)，總裝機容量260萬千(qian)瓦(wa)(wa)，年發(fa)電(dian)量107.9億千(qian)瓦(wa)(wa)時。工程具(ju)(ju)有超高(gao)(gao)邊坡(po)、超高(gao)(gao)土(tu)石壩(ba)、高(gao)(gao)地應力(li)洞(dong)室群、強震區(qu)高(gao)(gao)進(jin)水(shui)塔、高(gao)(gao)流速大(da)功率泄洪、高(gao)(gao)強度大(da)型復雜洞(dong)室交通等特點，工程設計(ji)與(yu)建設頗具(ju)(ju)難(nan)度和(he)挑戰。它的建設，將利于(yu)合(he)理開發(fa)大(da)渡河(he)干流水(shui)能資源，增加四(si)川電(dian)網電(dian)力(li)供應，合(he)理調整(zheng)能源結(jie)構，并促進(jin)“西電(dian)東送”以及民族地區(qu)經濟和(he)社會發(fa)展。
2016年9月28日(ri)，長(chang)河壩第一階(jie)段(duan)蓄水通過國(guo)家驗(yan)收，并開(kai)創(chuang)國(guo)內大型水電工(gong)程一個(ge)月內完成蓄水安(an)全鑒定、蓄水階(jie)段(duan)質量(liang)監督、蓄水驗(yan)收現(xian)場檢查和蓄水驗(yan)收委(wei)員會(hui)會(hui)議的先河。中(zhong)期(qi)導流洞(dong)(dong)及(ji)放(fang)空(kong)洞(dong)(dong)進口邊坡開(kai)挖被評為(wei)“質量(liang)示(shi)范(fan)區 ”，泄洪(hong)放(fang)空(kong)系統進口混凝(ning)土澆筑及(ji)3號泄洪(hong)洞(dong)(dong)洞(dong)(dong)身混凝(ning)土澆筑被評為(wei) “精品工(gong)程示(shi)范(fan)區”，泄洪(hong)放(fang)空(kong)系統及(ji)中(zhong)期(qi)導流洞(dong)(dong)施工(gong)實際工(gong)期(qi)比(bi)合同工(gong)期(qi)提前23個(ge)月。