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.　　日前，中國水電集團承建的小灣水電站進水塔攔污柵通過驗收，標志著進水塔工程建成，至此歷經5年多艱苦努力，該電站引水發電系統土建及金結安裝主體工程完工。

　　小(xiao)灣水電站裝(zhuang)機6臺，總容量420萬(wan)千(qian)瓦。引水發電系統土建及金結安(an)裝(zhuang)工(gong)程是(shi)(shi)該(gai)電站最(zui)大最(zui)重要的(de)工(gong)程之(zhi)一，包括(kuo)地(di)(di)下(xia)廠(chang)(chang)房(fang)(fang)、引水、尾水三(san)(san)大部分(fen)，由三(san)(san)大洞(dong)(dong)室和(he)六條引水壓(ya)力管(guan)道(dao)、六條母線洞(dong)(dong)、兩條尾水洞(dong)(dong)及交通洞(dong)(dong)等(deng)龐(pang)大的(de)地(di)(di)下(xia)洞(dong)(dong)室群和(he)地(di)(di)面(mian)進水塔等(deng)工(gong)程組成(cheng)。在(zai)(zai)不到0.3平方公里(li)的(de)山體里(li)，布置了總長17公里(li)的(de)88條地(di)(di)下(xia)洞(dong)(dong)室。洞(dong)(dong)室相間(jian)距小(xiao)，受三(san)(san)級結構面(mian)、蝕變帶等(deng)地(di)(di)質(zhi)結構影響(xiang)，施工(gong)圍巖穩定是(shi)(shi)公認的(de)世(shi)(shi)界級難題(ti)。地(di)(di)下(xia)廠(chang)(chang)房(fang)(fang)尾水管(guan)挖空率(lv)高達68%屬世(shi)(shi)界之(zhi)最(zui)，84.88米(mi)(mi)直(zhi)立墻(qiang)穩定又(you)是(shi)(shi)世(shi)(shi)界之(zhi)最(zui)，30.6米(mi)(mi)大跨度(du)、埋(mai)深500多(duo)米(mi)(mi)世(shi)(shi)界罕見。共有洞(dong)(dong)挖221萬(wan)立方米(mi)(mi)，明挖26萬(wan)立方米(mi)(mi)。主副廠(chang)(chang)房(fang)(fang)長298.9米(mi)(mi)、寬(kuan)30.6米(mi)(mi)、高82米(mi)(mi)，是(shi)(shi)國(guo)內(nei)最(zui)大的(de)水電站地(di)(di)下(xia)廠(chang)(chang)房(fang)(fang)之(zhi)一。整個系統工(gong)程規模宏(hong)大，施工(gong)技術十分(fen)復雜(za)，極具挑(tiao)戰性，在(zai)(zai)國(guo)內(nei)屈指可數。

　　該工(gong)程(cheng)于2003年11月(yue)12日開(kai)工(gong)。施(shi)(shi)工(gong)中，中國(guo)水電141聯營體依靠技術創新和采用新工(gong)藝、新材料，確保了(le)工(gong)程(cheng)的(de)優質(zhi)快(kuai)速推進。尤其在地下開(kai)挖(wa)中，成(cheng)功穿越了(le)國(guo)內罕見的(de)F7特(te)(te)大斷(duan)層，保證了(le)工(gong)程(cheng)安全。并開(kai)挖(wa)成(cheng)了(le)一(yi)流質(zhi)量(liang)的(de)地下廠房等(deng)洞室，在巖(yan)壁(bi)吊車(che)梁巖(yan)臺開(kai)挖(wa)中進行了(le)積極探索，采取了(le)定(ding)(ding)(ding)位(wei)、定(ding)(ding)(ding)人(ren)、定(ding)(ding)(ding)鉆、定(ding)(ding)(ding)責、定(ding)(ding)(ding)時、定(ding)(ding)(ding)額(e)、定(ding)(ding)(ding)標準的(de)“七(qi)定(ding)(ding)(ding)組織法(fa)”和每(mei)孔必(bi)測(ce)量(liang)、每(mei)道工(gong)序必(bi)檢測(ce)、每(mei)排(pai)炮后必(bi)檢查、每(mei)班交接(jie)必(bi)對口現(xian)場(chang)交待、每(mei)天必(bi)總結的(de)“五必(bi)管(guan)理(li)制(zhi)”，形成(cheng)了(le)精品項目，為國(guo)內其他工(gong)程(cheng)提供了(le)借鑒。施(shi)(shi)工(gong)中特(te)(te)別(bie)加強了(le)環保、水保工(gong)作，在生態保護(hu)上得到了(le)高度(du)重視。

　　小(xiao)灣電(dian)站(zhan)地下廠(chang)房開(kai)(kai)(kai)挖于2003年(nian)(nian)(nian)(nian)(nian)12月(yue)(yue)(yue)(yue)9日(ri)(ri)開(kai)(kai)(kai)始(shi)(shi)， 2006年(nian)(nian)(nian)(nian)(nian)5月(yue)(yue)(yue)(yue)10日(ri)(ri)結束(shu)(shu)，歷時29個月(yue)(yue)(yue)(yue)；混凝土(tu)主體(ti)(ti)工(gong)(gong)程(cheng)(cheng)施工(gong)(gong)于2006年(nian)(nian)(nian)(nian)(nian)5月(yue)(yue)(yue)(yue)8日(ri)(ri)開(kai)(kai)(kai)始(shi)(shi)，2008年(nian)(nian)(nian)(nian)(nian)10月(yue)(yue)(yue)(yue)24日(ri)(ri)結束(shu)(shu)。引水(shui)(shui)(shui)系統(tong)(tong)2004年(nian)(nian)(nian)(nian)(nian)12月(yue)(yue)(yue)(yue)開(kai)(kai)(kai)始(shi)(shi)開(kai)(kai)(kai)挖施工(gong)(gong)，于2006年(nian)(nian)(nian)(nian)(nian)8月(yue)(yue)(yue)(yue)15日(ri)(ri)結束(shu)(shu)；并于同年(nian)(nian)(nian)(nian)(nian)7月(yue)(yue)(yue)(yue)20日(ri)(ri)開(kai)(kai)(kai)始(shi)(shi)混凝土(tu)襯砌，2008年(nian)(nian)(nian)(nian)(nian)9月(yue)(yue)(yue)(yue)30日(ri)(ri)完成(cheng)。尾水(shui)(shui)(shui)系統(tong)(tong)2004年(nian)(nian)(nian)(nian)(nian)1月(yue)(yue)(yue)(yue)開(kai)(kai)(kai)始(shi)(shi)開(kai)(kai)(kai)挖至2007年(nian)(nian)(nian)(nian)(nian)結束(shu)(shu)；2006年(nian)(nian)(nian)(nian)(nian)3月(yue)(yue)(yue)(yue)開(kai)(kai)(kai)始(shi)(shi)混凝土(tu)襯砌，今年(nian)(nian)(nian)(nian)(nian)1月(yue)(yue)(yue)(yue)完工(gong)(gong)。進水(shui)(shui)(shui)塔工(gong)(gong)程(cheng)(cheng)于2005年(nian)(nian)(nian)(nian)(nian)2月(yue)(yue)(yue)(yue)15日(ri)(ri)開(kai)(kai)(kai)工(gong)(gong)，2007年(nian)(nian)(nian)(nian)(nian)12月(yue)(yue)(yue)(yue)31日(ri)(ri)混凝土(tu)施工(gong)(gong)結束(shu)(shu)，隨后(hou)開(kai)(kai)(kai)始(shi)(shi)水(shui)(shui)(shui)工(gong)(gong)設備安裝施工(gong)(gong)。整體(ti)(ti)工(gong)(gong)程(cheng)(cheng)按提前一年(nian)(nian)(nian)(nian)(nian)發電(dian)目(mu)標正常推進，為(wei)機(ji)電(dian)設備安裝提供了良好條件(jian)。

　　目(mu)前，電站建設正在(zai)按照首臺(tai)機組發電目(mu)標全力以赴向前推(tui)進。