工程簡介
太平哨大壩(ba)(ba)位(wei)于渾江下游,遼寧省(sheng)寬甸縣境內,工程于1976年(nian)開(kai)工建設,1979年(nian)1月下閘蓄(xu)水,1980年(nian)4臺(tai)機(ji)組全(quan)部(bu)投入運(yun)行(xing),是一座以(yi)發電(dian)為(wei)主的中型水電(dian)站(zhan)(zhan),裝機(ji)容量為(wei)161.0MW(4×40.25MW),多(duo)年(nian)平均發電(dian)量4.3億kW·h。電(dian)站(zhan)(zhan)主要建筑物由攔(lan)河壩(ba)(ba)、引水隧洞、地面發電(dian)廠房(fang)、地面開(kai)關(guan)站(zhan)(zhan)和(he)副(fu)壩(ba)(ba)(備(bei)用溢洪道(dao))等(deng)組成。
大壩(ba)(ba)(ba)為混(hun)凝土重(zhong)力壩(ba)(ba)(ba),最大壩(ba)(ba)(ba)高(gao)44m,壩(ba)(ba)(ba)頂長555.6m,共36個壩(ba)(ba)(ba)段(duan)(duan),其中4至(zhi)24壩(ba)(ba)(ba)段(duan)(duan)為溢流壩(ba)(ba)(ba)段(duan)(duan),每個壩(ba)(ba)(ba)段(duan)(duan)寬(kuan)12m,壩(ba)(ba)(ba)段(duan)(duan)橫縫設(she)(she)于孔(kong)口中間,堰頂高(gao)程(cheng)181.5m,其它為擋水(shui)壩(ba)(ba)(ba)段(duan)(duan)。大壩(ba)(ba)(ba)按二級建筑物設(she)(she)計(ji),壩(ba)(ba)(ba)頂高(gao)程(cheng)196.0m,壩(ba)(ba)(ba)頂寬(kuan)5m,在壩(ba)(ba)(ba)內176 m 高(gao)程(cheng)設(she)(she)有一條(tiao)縱向觀(guan)測廊(lang)道。太平哨水(shui)庫為日調節(jie)水(shui)庫,正常蓄水(shui)位(wei)及設(she)(she)計(ji)洪水(shui)位(wei)均為191.5m,校核(he)洪水(shui)位(wei)為192.5m,水(shui)庫水(shui)位(wei)的變(bian)幅很小。
太(tai)平(ping)哨水(shui)(shui)(shui)(shui)庫(ku)(ku)是(shi)(shi)一座山谷型(xing)水(shui)(shui)(shui)(shui)庫(ku)(ku),是(shi)(shi)繼渾江流(liu)(liu)域上桓仁(ren)及回龍山水(shui)(shui)(shui)(shui)電站(zhan)之(zhi)后專供第三個梯級水(shui)(shui)(shui)(shui)電站(zhan)(裝(zhuang)機容量4×4.025萬千(qian)瓦)發電的水(shui)(shui)(shui)(shui)庫(ku)(ku)。設(she)計水(shui)(shui)(shui)(shui)頭36.2m,水(shui)(shui)(shui)(shui)庫(ku)(ku)總庫(ku)(ku)容為2億立方(fang)米(mi)(mi)。正常(chang)蓄水(shui)(shui)(shui)(shui)位是(shi)(shi)191.5米(mi)(mi),水(shui)(shui)(shui)(shui)庫(ku)(ku)面(mian)積13.2平(ping)方(fang)公(gong)里(19800畝),水(shui)(shui)(shui)(shui)面(mian)最寬處達(da)1000米(mi)(mi),最狹(xia)處100米(mi)(mi)。水(shui)(shui)(shui)(shui)庫(ku)(ku)干流(liu)(liu)蜿蜒曲折長達(da)35公(gong)里,似一條銀蛇飛舞于(yu)群(qun)山之(zhi)間,兩岸翠疊百尋,一灣平(ping)湖(hu)千(qian)公(gong)頃。
流域概況
太(tai)平哨(shao)水(shui)電(dian)站(zhan)位于鴨(ya)綠江支流渾江下游,電(dian)站(zhan)壩址在遼寧省寬(kuan)甸(dian)縣境內,壩址以(yi)上(shang)集水(shui)面(mian)積(ji)12961平方(fang)公(gong)(gong)(gong)(gong)里(li),其上(shang)游約86公(gong)(gong)(gong)(gong)里(li)和(he)36.5公(gong)(gong)(gong)(gong)里(li)處有桓仁、回龍山電(dian)站(zhan),壩址集水(shui)面(mian)積(ji)以(yi)上(shang)分別為10364平方(fang)公(gong)(gong)(gong)(gong)里(li)和(he)12433平方(fang)公(gong)(gong)(gong)(gong)里(li),桓~回區間集水(shui)面(mian)積(ji)Z069平方(fang)公(gong)(gong)(gong)(gong)里(li)有支流大二河(he)、大雅河(he)匯入(ru)。回~太(tai)區間集水(shui)面(mian)積(ji)528平方(fang)公(gong)(gong)(gong)(gong)里(li),有支流小雅河(he)匯入(ru)。
渾江發源于長白山系(xi)龍(long)崗山脈老嶺南麓(lu)。河(he)(he)流(liu)(liu)全長435公(gong)里(li),集水面積15414平(ping)(ping)方公(gong)里(li),其相鄰(lin)流(liu)(liu)域(yu)北為(wei)(wei)第二松花(hua)江、東南為(wei)(wei)鴨綠江、西(xi)接遼河(he)(he)支流(liu)(liu)渾河(he)(he)、太子河(he)(he)。本流(liu)(liu)域(yu)是(shi)山區性河(he)(he)流(liu)(liu),自河(he)(he)流(liu)(liu)以(yi)下,沿程匯入(ru)的支流(liu)(liu)共有11條,兩岸山勢陡峭、僅於各支流(liu)(liu)匯入(ru)處地勢較(jiao)開闊。河(he)(he)道中(zhong)多急灘,水面比(bi)(bi)降(jiang)較(jiao)大(da),通化以(yi)上(shang)為(wei)(wei)上(shang)游,平(ping)(ping)均(jun)比(bi)(bi)降(jiang)1.55‰,通化至桓(huan)仁(ren)為(wei)(wei)中(zhong)游、桓(huan)仁(ren)以(yi)下為(wei)(wei)下游,中(zhong)下游平(ping)(ping)均(jun)比(bi)(bi)降(jiang)0.85‰,河(he)(he)床主(zhu)要(yao)由卵石組(zu)成。