工程簡介
太平哨大壩位于渾江下游,遼(liao)寧(ning)省寬甸縣境內,工程(cheng)于1976年(nian)(nian)開工建(jian)設,1979年(nian)(nian)1月(yue)下閘蓄水(shui)(shui),1980年(nian)(nian)4臺機(ji)組(zu)全部投(tou)入運(yun)行(xing),是(shi)一座以(yi)發電(dian)(dian)為(wei)主的中型水(shui)(shui)電(dian)(dian)站(zhan)(zhan),裝機(ji)容量為(wei)161.0MW(4×40.25MW),多(duo)年(nian)(nian)平均(jun)發電(dian)(dian)量4.3億kW·h。電(dian)(dian)站(zhan)(zhan)主要建(jian)筑(zhu)物由攔河(he)壩、引水(shui)(shui)隧洞、地面(mian)發電(dian)(dian)廠房、地面(mian)開關(guan)站(zhan)(zhan)和副(fu)壩(備用溢洪道)等(deng)組(zu)成。
大壩(ba)(ba)(ba)(ba)(ba)為(wei)(wei)(wei)(wei)混凝土重(zhong)力壩(ba)(ba)(ba)(ba)(ba),最(zui)大壩(ba)(ba)(ba)(ba)(ba)高44m,壩(ba)(ba)(ba)(ba)(ba)頂(ding)長(chang)555.6m,共(gong)36個壩(ba)(ba)(ba)(ba)(ba)段(duan)(duan)(duan),其中4至(zhi)24壩(ba)(ba)(ba)(ba)(ba)段(duan)(duan)(duan)為(wei)(wei)(wei)(wei)溢(yi)流(liu)壩(ba)(ba)(ba)(ba)(ba)段(duan)(duan)(duan),每個壩(ba)(ba)(ba)(ba)(ba)段(duan)(duan)(duan)寬12m,壩(ba)(ba)(ba)(ba)(ba)段(duan)(duan)(duan)橫縫設于孔(kong)口中間,堰頂(ding)高程(cheng)(cheng)181.5m,其它(ta)為(wei)(wei)(wei)(wei)擋水(shui)(shui)壩(ba)(ba)(ba)(ba)(ba)段(duan)(duan)(duan)。大壩(ba)(ba)(ba)(ba)(ba)按二級建筑物設計,壩(ba)(ba)(ba)(ba)(ba)頂(ding)高程(cheng)(cheng)196.0m,壩(ba)(ba)(ba)(ba)(ba)頂(ding)寬5m,在(zai)壩(ba)(ba)(ba)(ba)(ba)內176 m 高程(cheng)(cheng)設有一條縱向觀測廊道。太平哨水(shui)(shui)庫(ku)為(wei)(wei)(wei)(wei)日(ri)調(diao)節水(shui)(shui)庫(ku),正常蓄水(shui)(shui)位(wei)及設計洪水(shui)(shui)位(wei)均為(wei)(wei)(wei)(wei)191.5m,校核(he)洪水(shui)(shui)位(wei)為(wei)(wei)(wei)(wei)192.5m,水(shui)(shui)庫(ku)水(shui)(shui)位(wei)的變幅很(hen)小(xiao)。
太平(ping)(ping)哨(shao)水(shui)庫是一(yi)座山谷型水(shui)庫,是繼渾江流(liu)(liu)域(yu)上桓(huan)仁及回龍山水(shui)電(dian)(dian)站(zhan)之(zhi)后專供第三個梯級水(shui)電(dian)(dian)站(zhan)(裝機容量4×4.025萬千(qian)瓦)發電(dian)(dian)的(de)水(shui)庫。設計(ji)水(shui)頭36.2m,水(shui)庫總庫容為(wei)2億立方米(mi)。正常蓄水(shui)位(wei)是191.5米(mi),水(shui)庫面(mian)(mian)積13.2平(ping)(ping)方公(gong)里(li)(19800畝),水(shui)面(mian)(mian)最寬處(chu)達1000米(mi),最狹處(chu)100米(mi)。水(shui)庫干流(liu)(liu)蜿蜒曲折長達35公(gong)里(li),似一(yi)條銀蛇飛舞(wu)于群山之(zhi)間,兩岸翠疊百尋(xun),一(yi)灣平(ping)(ping)湖(hu)千(qian)公(gong)頃。
流域概況
太(tai)平哨水(shui)(shui)電站位于鴨(ya)綠江支(zhi)流渾江下(xia)游,電站壩址在遼寧省寬甸縣境內,壩址以上(shang)集(ji)(ji)水(shui)(shui)面積(ji)12961平方(fang)公(gong)里(li),其上(shang)游約86公(gong)里(li)和(he)36.5公(gong)里(li)處有(you)(you)桓仁、回龍山電站,壩址集(ji)(ji)水(shui)(shui)面積(ji)以上(shang)分別為10364平方(fang)公(gong)里(li)和(he)12433平方(fang)公(gong)里(li),桓~回區間集(ji)(ji)水(shui)(shui)面積(ji)Z069平方(fang)公(gong)里(li)有(you)(you)支(zhi)流大二河(he)、大雅(ya)河(he)匯(hui)入。回~太(tai)區間集(ji)(ji)水(shui)(shui)面積(ji)528平方(fang)公(gong)里(li),有(you)(you)支(zhi)流小雅(ya)河(he)匯(hui)入。
渾江(jiang)發源于長(chang)白山系龍崗山脈老嶺南麓(lu)。河(he)流(liu)全(quan)長(chang)435公里,集水面(mian)積15414平方公里,其相鄰(lin)流(liu)域(yu)北為(wei)第二松花江(jiang)、東南為(wei)鴨綠江(jiang)、西接遼(liao)河(he)支(zhi)流(liu)渾河(he)、太子河(he)。本流(liu)域(yu)是山區性河(he)流(liu),自河(he)流(liu)以下(xia),沿程匯(hui)入的支(zhi)流(liu)共有11條,兩岸山勢(shi)陡峭(qiao)、僅於各支(zhi)流(liu)匯(hui)入處地(di)勢(shi)較(jiao)開(kai)闊。河(he)道中多急灘,水面(mian)比降較(jiao)大,通化以上(shang)為(wei)上(shang)游,平均比降1.55‰,通化至(zhi)桓仁(ren)為(wei)中游、桓仁(ren)以下(xia)為(wei)下(xia)游,中下(xia)游平均比降0.85‰,河(he)床主要由卵石組成。