水庫詳情
樞紐工(gong)程(cheng)(cheng)由攔(lan)河壩(ba)(ba)、鋼(gang)管(guan)(guan)引(yin)水(shui)(shui)道和壩(ba)(ba)后廠房(fang)、兩岸(an)滑(hua)雪(xue)式(shi)溢(yi)洪(hong)道、一(yi)(yi)級(ji)放(fang)空(kong)(kong)兼(jian)泄洪(hong)隧洞、二(er)(er)級(ji)放(fang)空(kong)(kong)隧洞等建筑物組(zu)成(cheng)。攔(lan)河大壩(ba)(ba)為混凝土雙曲拱壩(ba)(ba)、294米(mi)(mi)(mi)(mi)壩(ba)(ba)頂(ding)高(gao)程(cheng)(cheng),最(zui)大壩(ba)(ba)高(gao)157米(mi)(mi)(mi)(mi),最(zui)大底寬35米(mi)(mi)(mi)(mi),頂(ding)寬7米(mi)(mi)(mi)(mi),厚高(gao)比(bi)為 0.223,壩(ba)(ba)頂(ding)中(zhong)心弧長(chang)(chang)438米(mi)(mi)(mi)(mi), 最(zui)大中(zhong)心角95°7",最(zui)大內(nei)半徑302.3米(mi)(mi)(mi)(mi);壩(ba)(ba)后式(shi)主(zhu)廠房(fang)長(chang)(chang)106米(mi)(mi)(mi)(mi),寬23米(mi)(mi)(mi)(mi),最(zui)大高(gao)度56. 3米(mi)(mi)(mi)(mi),安裝4臺單(dan)機容量(liang)12.5萬千瓦機組(zu),總容量(liang)50萬千瓦,由4條(tiao)內(nei)徑5.2米(mi)(mi)(mi)(mi)、進(jin)口工(gong)作(zuo)閘(zha)門門孔(kong)中(zhong)心高(gao)程(cheng)(cheng)221.5米(mi)(mi)(mi)(mi)的鋼(gang)管(guan)(guan)引(yin)水(shui)(shui)道供水(shui)(shui),單(dan)機引(yin)用流(liu)量(liang)123秒(miao)立(li)米(mi)(mi)(mi)(mi);右(you)岸(an)一(yi)(yi)孔(kong)、左(zuo)岸(an)兩孔(kong)滑(hua)雪(xue)式(shi)溢(yi)洪(hong)道順岸(an)邊地形高(gao)低布(bu)(bu)置,堰(yan)頂(ding)高(gao)程(cheng)(cheng)266米(mi)(mi)(mi)(mi),弧門潛孔(kong)啟閉,尺寸為10×7.5米(mi)(mi)(mi)(mi),全長(chang)(chang)分別為117和147米(mi)(mi)(mi)(mi),采用挑流(liu)消(xiao)能,設計單(dan)孔(kong)流(liu)量(liang)1300秒(miao)立(li)米(mi)(mi)(mi)(mi),單(dan)寬流(liu)量(liang)130秒(miao)立(li)米(mi)(mi)(mi)(mi);一(yi)(yi)級(ji)放(fang)空(kong)(kong)兼(jian)泄洪(hong)隧洞布(bu)(bu)置在(zai)(zai)左(zuo)岸(an),進(jin)口底板高(gao)程(cheng)(cheng)222米(mi)(mi)(mi)(mi),全長(chang)(chang)527米(mi)(mi)(mi)(mi),最(zui)大泄量(liang)1942秒(miao)立(li)米(mi)(mi)(mi)(mi),遇百年(nian)一(yi)(yi)遇洪(hong)水(shui)(shui)時參加(jia)泄洪(hong);二(er)(er)級(ji)放(fang)空(kong)(kong)隧洞布(bu)(bu)置在(zai)(zai)右(you)岸(an),全長(chang)(chang) 671.35米(mi)(mi)(mi)(mi),進(jin)口底板高(gao)程(cheng)(cheng)170米(mi)(mi)(mi)(mi),最(zui)大出流(liu)量(liang)1540秒(miao)立(li)米(mi)(mi)(mi)(mi),該洞在(zai)(zai)施(shi)工(gong)后期參加(jia)導流(liu)。兩洞放(fang)空(kong)(kong)時間均為一(yi)(yi)個(ge)月。
功能作用
東江水(shui)庫是(shi)一(yi)個以(yi)發電(dian)為主,兼有(you)(you)防洪(hong)、航運(yun)、城鎮工(gong)業及生活用水(shui)等綜合利用的(de)大型水(shui)電(dian)工(gong)程(cheng)。水(shui)庫壩高庫大,調節(jie)性能好。總庫容91.5億(yi)立(li)(li)米(mi)(mi)(mi),當(dang)正常高水(shui)位285 米(mi)(mi)(mi)時(shi),相(xiang)應庫容有(you)(you) 81.2億(yi)立(li)(li)米(mi)(mi)(mi)(其(qi)中(zhong)有(you)(you)效庫容56.7億(yi)立(li)(li)米(mi)(mi)(mi))。庫容系(xi)數1.25,為多年調節(jie)水(shui)庫。電(dian)站多年平均發電(dian)量13.2億(yi)千(qian)瓦小(xiao)時(shi),在華(hua)中(zhong)電(dian)力系(xi)統中(zhong)主要(yao)擔(dan)負(fu)(fu)調峰任務(wu);水(shui)庫建成后可使耒水(shui)下(xia)游(you)(you)(you)1.07萬畝農田免除洪(hong)水(shui)危害,同(tong)時(shi)可以(yi)提高下(xia)游(you)(you)(you)已建白漁潭、遙田等水(shui)電(dian)站的(de)保證出力和(he)京廣鐵路(lu)的(de)防洪(hong)標準;水(shui)庫回水(shui)總長 150公(gong)(gong)里(li)對改善上下(xia)游(you)(you)(you)航運(yun)都十分有(you)(you)利。為避(bi)免機(ji)組停(ting)機(ji)或(huo)長時(shi)間低負(fu)(fu)荷運(yun)行(xing)影響下(xia)游(you)(you)(you)工(gong)農業用水(shui),在其(qi)下(xia)游(you)(you)(you)9 公(gong)(gong)里(li)處(chu)修建一(yi)座小(xiao)東江水(shui)電(dian)站,進行(xing)反(fan)調節(jie)。
建設時間
東江水庫工(gong)程(cheng)曾于1958年(nian)(nian)動工(gong),至1961年(nian)(nian)初停建(jian)。1978年(nian)(nian)4月復工(gong),1980年(nian)(nian)11月截(jie)流合龍,1986年(nian)(nian)8月下閘蓄水,1987年(nian)(nian)11月第一(yi)臺機投產發電,1992年(nian)(nian)樞(shu)紐(niu)工(gong)程(cheng)全面竣工(gong)。