董箐(qing)水電(dian)(dian)站是(shi)西電(dian)(dian)東送第二批重(zhong)點電(dian)(dian)源建設項目之一,為(wei)二等(deng)(deng)工(gong)(gong)(gong)程,工(gong)(gong)(gong)程規(gui)模為(wei)大(da)(2)型。位(wei)于(yu)貴州北盤江下游貞(zhen)豐縣(xian)與鎮寧(ning)縣(xian)交界處。工(gong)(gong)(gong)程總投資約60億(yi)(yi)元,總裝機(ji)容量為(wei)88萬(wan)千(qian)(qian)瓦,安(an)裝4臺(tai)22萬(wan)千(qian)(qian)瓦水輪發(fa)電(dian)(dian)機(ji)組,保(bao)證出力17.2萬(wan)千(qian)(qian)瓦,年平均發(fa)電(dian)(dian)量為(wei)31億(yi)(yi)千(qian)(qian)瓦時,水庫(ku)正常蓄水位(wei)490米,總庫(ku)容9.55億(yi)(yi)立方米,調節庫(ku)容1.438億(yi)(yi)立方米,以發(fa)電(dian)(dian)為(wei)主,兼(jian)有防洪(hong)、供水、養殖和改善生態環境等(deng)(deng)綜合效益。
工程(cheng)(cheng)于2005年3月28日(ri)正式開工,2006年11月15日(ri)實現(xian)截流,2009年8月20日(ri)下閘蓄水,12月1日(ri)首臺機組(zu)發電(dian),12月18日(ri)第(di)二(er)臺機組(zu)發電(dian),2010年6月1日(ri),第(di)三、四臺機組(zu)發電(dian),2010年6月工程(cheng)(cheng)基本完(wan)工。
工程概況
貴州北(bei)盤江(jiang)董箐水(shui)電(dian)(dian)站位于貴州省鎮寧縣與貞豐縣交界(jie)的北(bei)盤江(jiang)上,是(shi)北(bei)盤江(jiang)流域梯級(ji)開發(fa)的第3個電(dian)(dian)站,電(dian)(dian)站總容量為88萬千瓦,多年(nian)平均發(fa)電(dian)(dian)量近期30.26億千瓦時。是(shi)'西(xi)電(dian)(dian)東送'第二批(pi)重點電(dian)(dian)源建設(she)項目之一,電(dian)(dian)站以發(fa)電(dian)(dian)為主,兼有通(tong)航、防洪(hong)、供水(shui)、養殖和改善生態環境等綜合效益。
中國水(shui)電(dian)(dian)集團子企(qi)業水(shui)電(dian)(dian)六局(ju)、水(shui)電(dian)(dian)九局(ju)、水(shui)電(dian)(dian)十一局(ju)、水(shui)電(dian)(dian)十二局(ju)有限公司(si)等單位參加了(le)電(dian)(dian)站主要工程項目(mu)建(jian)設。電(dian)(dian)站投產運行后,將(jiang)為(wei)華南地(di)區(qu)提供優質電(dian)(dian)能,對緩解珠三角地(di)區(qu)電(dian)(dian)力供應的緊張(zhang)局(ju)面和推動該地(di)區(qu)經濟社會(hui)發(fa)展發(fa)揮重要作(zuo)用(yong)。
工程按5000年(nian)一遇洪(hong)水(shui)校核,校核洪(hong)水(shui)位(wei)493.08m,下泄(xie)流(liu)量(liang)13330立(li)方米/秒;500年(nian)一遇洪(hong)水(shui)設(she)計,設(she)計洪(hong)水(shui)位(wei)490.70m,下泄(xie)流(liu)量(liang)11478立(li)方米/秒。 壩(ba)(ba)(ba)(ba)址河谷呈開(kai)闊的(de)(de)“V”形,壩(ba)(ba)(ba)(ba)址區(qu)(qu)出露(lu)地(di)層(ceng)為青巖(yan)組第(di)(di)二段(duan)(duan)(T2q2)、邊陽組第(di)(di)一段(duan)(duan)(T2b1)和第(di)(di)二段(duan)(duan)(T2b2)及第(di)(di)四系(Q)地(di)層(ceng),壩(ba)(ba)(ba)(ba)基及兩壩(ba)(ba)(ba)(ba)肩以灰色厚層(ceng)砂(sha)巖(yan)、粉(fen)砂(sha)巖(yan)夾鈣(gai)質泥(ni)巖(yan)為主(zhu)(zhu)。壩(ba)(ba)(ba)(ba)址區(qu)(qu)處于多德向斜(xie)北西翼,壩(ba)(ba)(ba)(ba)址區(qu)(qu)未發(fa)現(xian)大(da)(da)的(de)(de)斷裂帶發(fa)育,褶(zhe)皺(zhou)、裂隙是壩(ba)(ba)(ba)(ba)址區(qu)(qu)的(de)(de)主(zhu)(zhu)要構造形跡。壩(ba)(ba)(ba)(ba)址處地(di)形開(kai)闊,利(li)于建筑物的(de)(de)布(bu)置,不存在巖(yan)溶滲漏問題,巖(yan)石完(wan)整,構造單一。鋼筋混凝土面板堆石壩(ba)(ba)(ba)(ba)最大(da)(da)壩(ba)(ba)(ba)(ba)高(gao)150m,壩(ba)(ba)(ba)(ba)頂高(gao)程494.5m,壩(ba)(ba)(ba)(ba)頂全長(chang)678.63m,上(shang)游壩(ba)(ba)(ba)(ba)坡1:1.4,下游綜(zong)合坡比(bi)1:1.5,壩(ba)(ba)(ba)(ba)體總填筑方量(liang)約890萬立(li)方米。溢(yi)洪(hong)道控(kong)制段(duan)(duan)距大(da)(da)壩(ba)(ba)(ba)(ba)左壩(ba)(ba)(ba)(ba)肩約60m,分(fen)別由引水(shui)明渠段(duan)(duan)、控(kong)制段(duan)(duan)、泄(xie)槽段(duan)(duan)及消能工組成。廠房采用壩(ba)(ba)(ba)(ba)后式右(you)岸地(di)面廠房,主(zhu)(zhu)
要有主廠(chang)(chang)房、中空樓和開(kai)關(guan)站(zhan)(zhan)組成(cheng)(cheng)。出線為超(chao)高壓(ya)500KV。廠(chang)(chang)區樞紐主要由主機(ji)間、右端(duan)安(an)裝間、上游(you)副廠(chang)(chang)房、上游(you)升壓(ya)開(kai)關(guan)站(zhan)(zhan)、中控樓、下游(you)副廠(chang)(chang)房、下游(you)尾水平臺及尾水渠(qu)等建(jian)筑物組成(cheng)(cheng)。廠(chang)(chang)內安(an)裝4臺水輪發電機(ji)組,總容量880MW,主廠(chang)(chang)房長(chang)137.0m、寬25.5m、高67.62m,機(ji)組安(an)裝高程359.6m。
工程意義
董箐(qing)水電(dian)站是國(guo)家(jia)第(di)二批“西電(dian)東送”重點項目,裝機(ji)容量(liang)880MW(4×220MW),工程總(zong)投資69.63億元人(ren)民(min)幣。電(dian)站以發(fa)電(dian)為主(zhu),兼(jian)顧航運及其他任(ren)務(wu)。電(dian)站建成后,在上游光照(zhao)電(dian)站水庫的調(diao)節下,具有(you)良好的發(fa)電(dian)、調(diao)峰、備(bei)用等性能。