董箐水電站是西電東送(song)第二(er)批重點電源建設項目之(zhi)一,為(wei)二(er)等工(gong)程,工(gong)程規模(mo)為(wei)大(2)型(xing)。位于貴州(zhou)北(bei)盤江下(xia)游貞豐縣與(yu)鎮寧縣交界(jie)處。工(gong)程總(zong)投(tou)資約60億元(yuan),總(zong)裝機容量(liang)(liang)為(wei)88萬(wan)千(qian)(qian)瓦,安(an)裝4臺22萬(wan)千(qian)(qian)瓦水輪發電機組,保證出力(li)17.2萬(wan)千(qian)(qian)瓦,年平均發電量(liang)(liang)為(wei)31億千(qian)(qian)瓦時,水庫正常蓄水位490米,總(zong)庫容9.55億立(li)方米,調(diao)節庫容1.438億立(li)方米,以發電為(wei)主,兼有防(fang)洪、供水、養(yang)殖和改(gai)善(shan)生態環境等綜合效(xiao)益(yi)。
工(gong)程于2005年3月28日(ri)正(zheng)式開(kai)工(gong),2006年11月15日(ri)實現截流,2009年8月20日(ri)下閘(zha)蓄水,12月1日(ri)首(shou)臺機組(zu)發電,12月18日(ri)第二臺機組(zu)發電,2010年6月1日(ri),第三、四(si)臺機組(zu)發電,2010年6月工(gong)程基(ji)本完(wan)工(gong)。
工程概況
貴(gui)州北(bei)盤江(jiang)董箐(qing)水電(dian)(dian)站(zhan)(zhan)位于貴(gui)州省鎮寧縣(xian)與貞豐(feng)縣(xian)交界的(de)北(bei)盤江(jiang)上(shang),是北(bei)盤江(jiang)流域梯(ti)級開發的(de)第3個電(dian)(dian)站(zhan)(zhan),電(dian)(dian)站(zhan)(zhan)總容量為88萬千瓦,多年(nian)平(ping)均發電(dian)(dian)量近期30.26億(yi)千瓦時。是'西電(dian)(dian)東送'第二批重點電(dian)(dian)源建設項目(mu)之一(yi),電(dian)(dian)站(zhan)(zhan)以(yi)發電(dian)(dian)為主(zhu),兼(jian)有通(tong)航(hang)、防洪、供水、養殖和(he)改(gai)善(shan)生態環(huan)境等綜合效益。
中國水電(dian)(dian)(dian)集(ji)團子企(qi)業水電(dian)(dian)(dian)六局(ju)、水電(dian)(dian)(dian)九局(ju)、水電(dian)(dian)(dian)十一局(ju)、水電(dian)(dian)(dian)十二局(ju)有(you)限公司(si)等單位參(can)加了(le)電(dian)(dian)(dian)站主(zhu)要(yao)工程項目(mu)建設。電(dian)(dian)(dian)站投產運(yun)行后,將為華(hua)南(nan)地(di)區提供優質(zhi)電(dian)(dian)(dian)能,對緩解珠三角地(di)區電(dian)(dian)(dian)力供應的緊張(zhang)局(ju)面(mian)和推動該(gai)地(di)區經濟社(she)會發(fa)展發(fa)揮重要(yao)作用。
工程(cheng)按5000年一遇(yu)洪(hong)(hong)水(shui)校(xiao)核,校(xiao)核洪(hong)(hong)水(shui)位(wei)493.08m,下(xia)泄(xie)流量13330立方(fang)米/秒(miao);500年一遇(yu)洪(hong)(hong)水(shui)設計,設計洪(hong)(hong)水(shui)位(wei)490.70m,下(xia)泄(xie)流量11478立方(fang)米/秒(miao)。 壩(ba)(ba)(ba)(ba)(ba)址(zhi)(zhi)河谷呈開闊的“V”形(xing),壩(ba)(ba)(ba)(ba)(ba)址(zhi)(zhi)區(qu)(qu)出露(lu)地層為青巖(yan)(yan)組(zu)第(di)二段(duan)(T2q2)、邊陽組(zu)第(di)一段(duan)(T2b1)和第(di)二段(duan)(T2b2)及第(di)四系(Q)地層,壩(ba)(ba)(ba)(ba)(ba)基及兩壩(ba)(ba)(ba)(ba)(ba)肩以灰色(se)厚(hou)層砂(sha)(sha)巖(yan)(yan)、粉砂(sha)(sha)巖(yan)(yan)夾鈣質泥巖(yan)(yan)為主(zhu)。壩(ba)(ba)(ba)(ba)(ba)址(zhi)(zhi)區(qu)(qu)處(chu)于多德向斜北西(xi)翼(yi),壩(ba)(ba)(ba)(ba)(ba)址(zhi)(zhi)區(qu)(qu)未(wei)發現大(da)的斷裂帶發育,褶皺、裂隙是壩(ba)(ba)(ba)(ba)(ba)址(zhi)(zhi)區(qu)(qu)的主(zhu)要構造形(xing)跡。壩(ba)(ba)(ba)(ba)(ba)址(zhi)(zhi)處(chu)地形(xing)開闊,利于建筑(zhu)物的布置(zhi),不存在巖(yan)(yan)溶滲漏問題,巖(yan)(yan)石完整,構造單一。鋼筋混凝(ning)土面(mian)板堆石壩(ba)(ba)(ba)(ba)(ba)最大(da)壩(ba)(ba)(ba)(ba)(ba)高(gao)150m,壩(ba)(ba)(ba)(ba)(ba)頂高(gao)程(cheng)494.5m,壩(ba)(ba)(ba)(ba)(ba)頂全長678.63m,上游壩(ba)(ba)(ba)(ba)(ba)坡1:1.4,下(xia)游綜合坡比1:1.5,壩(ba)(ba)(ba)(ba)(ba)體總(zong)填(tian)筑(zhu)方(fang)量約890萬立方(fang)米。溢洪(hong)(hong)道控制段(duan)距(ju)大(da)壩(ba)(ba)(ba)(ba)(ba)左壩(ba)(ba)(ba)(ba)(ba)肩約60m,分別由引(yin)水(shui)明渠段(duan)、控制段(duan)、泄(xie)槽段(duan)及消能工組(zu)成。廠房采用壩(ba)(ba)(ba)(ba)(ba)后式右岸(an)地面(mian)廠房,主(zhu)
要有主(zhu)廠(chang)(chang)房(fang)、中(zhong)空(kong)樓和開關站組成(cheng)。出線為超高(gao)壓500KV。廠(chang)(chang)區樞紐主(zhu)要由主(zhu)機(ji)(ji)間(jian)(jian)、右端安裝(zhuang)間(jian)(jian)、上(shang)(shang)游副廠(chang)(chang)房(fang)、上(shang)(shang)游升(sheng)壓開關站、中(zhong)控樓、下游副廠(chang)(chang)房(fang)、下游尾水平臺及尾水渠等建筑物組成(cheng)。廠(chang)(chang)內(nei)安裝(zhuang)4臺水輪發電機(ji)(ji)組,總(zong)容量(liang)880MW,主(zhu)廠(chang)(chang)房(fang)長137.0m、寬25.5m、高(gao)67.62m,機(ji)(ji)組安裝(zhuang)高(gao)程359.6m。
工程意義
董箐(qing)水(shui)電(dian)(dian)站(zhan)是國家第二批(pi)“西電(dian)(dian)東送(song)”重點項目(mu),裝機容量880MW(4×220MW),工程總投資69.63億元人民幣(bi)。電(dian)(dian)站(zhan)以發電(dian)(dian)為主,兼顧航(hang)運及其他任務(wu)。電(dian)(dian)站(zhan)建成后,在上游(you)光照電(dian)(dian)站(zhan)水(shui)庫的調(diao)節下,具有(you)良好(hao)的發電(dian)(dian)、調(diao)峰、備用(yong)等性(xing)能(neng)。