龍背(bei)灣(wan)水(shui)(shui)(shui)(shui)(shui)電(dian)站位于湖(hu)北省竹(zhu)山縣(xian)堵河(he)南支(zhi)流(liu)官渡河(he)中上游,為(wei)第一級電(dian)站、龍頭水(shui)(shui)(shui)(shui)(shui)庫(ku),下距兩河(he)口45.6公(gong)(gong)(gong)里(li)(li),距竹(zhu)山縣(xian)城90公(gong)(gong)(gong)里(li)(li)。壩(ba)(ba)(ba)(ba)址以上流(liu)域面積2155平方公(gong)(gong)(gong)里(li)(li),河(he)長81.3公(gong)(gong)(gong)里(li)(li),多年(nian)(nian)(nian)平均流(liu)量(liang)45.3立方米(mi)(mi)(mi)(mi)(mi)/秒(考慮調(diao)(diao)水(shui)(shui)(shui)(shui)(shui)),多年(nian)(nian)(nian)平均年(nian)(nian)(nian)徑流(liu)量(liang)14.3億(yi)(yi)立方米(mi)(mi)(mi)(mi)(mi)(考慮調(diao)(diao)水(shui)(shui)(shui)(shui)(shui))。水(shui)(shui)(shui)(shui)(shui)庫(ku)校核洪(hong)水(shui)(shui)(shui)(shui)(shui)位523.89米(mi)(mi)(mi)(mi)(mi),設計洪(hong)水(shui)(shui)(shui)(shui)(shui)位521.85米(mi)(mi)(mi)(mi)(mi),正常蓄水(shui)(shui)(shui)(shui)(shui)位520.00米(mi)(mi)(mi)(mi)(mi),死水(shui)(shui)(shui)(shui)(shui)位485.00米(mi)(mi)(mi)(mi)(mi),總庫(ku)容(rong)8.3億(yi)(yi)立方米(mi)(mi)(mi)(mi)(mi),死庫(ku)容(rong)3.434億(yi)(yi)立方米(mi)(mi)(mi)(mi)(mi),調(diao)(diao)節庫(ku)容(rong)4.236億(yi)(yi)立方米(mi)(mi)(mi)(mi)(mi),為(wei)多年(nian)(nian)(nian)調(diao)(diao)節水(shui)(shui)(shui)(shui)(shui)庫(ku)。龍背(bei)灣(wan)水(shui)(shui)(shui)(shui)(shui)電(dian)站設計為(wei)壩(ba)(ba)(ba)(ba)后式電(dian)站,主(zhu)要有大(da)壩(ba)(ba)(ba)(ba)、發電(dian)洞、廠房、變電(dian)站等組成。龍背(bei)灣(wan)水(shui)(shui)(shui)(shui)(shui)庫(ku)大(da)壩(ba)(ba)(ba)(ba)為(wei)混凝土面板堆(dui)石(shi)壩(ba)(ba)(ba)(ba),壩(ba)(ba)(ba)(ba)頂(ding)高(gao)程524.3米(mi)(mi)(mi)(mi)(mi),最大(da)壩(ba)(ba)(ba)(ba)高(gao)158.3米(mi)(mi)(mi)(mi)(mi),壩(ba)(ba)(ba)(ba)頂(ding)長度465米(mi)(mi)(mi)(mi)(mi),主(zhu)要泄洪(hong)設施為(wei)開(kai)敞式溢洪(hong)道3孔(kong),設計泄洪(hong)流(liu)量(liang)6440立方米(mi)(mi)(mi)(mi)(mi)/秒。龍背(bei)灣(wan)水(shui)(shui)(shui)(shui)(shui)電(dian)站工程開(kai)發任務以發電(dian)為(wei)主(zhu),水(shui)(shui)(shui)(shui)(shui)庫(ku)建(jian)成后有庫(ku)區航運及(ji)人(ren)畜飲水(shui)(shui)(shui)(shui)(shui)供應(ying)等綜(zong)合(he)效益。水(shui)(shui)(shui)(shui)(shui)電(dian)站設計裝機(ji)18萬千(qian)瓦,年(nian)(nian)(nian)利用小時2328小時。計劃總工期(qi)4年(nian)(nian)(nian)。項目由黃河(he)小浪底水(shui)(shui)(shui)(shui)(shui)資(zi)源投資(zi)有限(xian)公(gong)(gong)(gong)司與漢(han)江(jiang)集(ji)團聯(lian)合(he)開(kai)發。工程概算總投資(zi)為(wei)21.796億(yi)(yi)元人(ren)民幣(bi)。
龍背灣水電站是堵河流域待開發的優質調峰電源和龍頭項目,電站竣工后,將對提高流域電源整體競爭能力,提高南水北調中線供水保障能力,促進竹山、竹溪、房縣庫區群眾脫貧致富和區域經濟發展發揮重要作用。工程規模屬大(2)型,工程等別為二等,主要建筑物大壩為一級建筑物。水庫正常蓄水位520.0m,水庫最大庫容8.3億m3,電站總裝機2×90MW,電站設計引用流量170.6m3/s。 該項目于2008年啟動前期工作,今年2月開始動工壩區場平、施工電源、施工道路、導流洞進出口、壩肩開挖等臨建工程。目前,該項目已完成移民安置規劃大綱、土地預審、環保影響評價、水土保持、防洪規劃、使用林地等17個專題報告的評審批復工作。。至2014年10月12日11點18分,132噸的鋼閘門隨著起重機的轉動緩緩落(luo)下,龍背灣水(shui)電(dian)站順(shun)利下閘,開(kai)始(shi)蓄(xu)水(shui)。這標(biao)志(zhi)著堵河干流水(shui)電(dian)開(kai)發全面完(wan)成,至此竹山(shan)縣水(shui)電(dian)站總裝機達到90萬千瓦,水(shui)電(dian)大縣之夢順(shun)利實現。