概況
大洪河(he)(he)(he)水電站位于重慶市長壽(shou)區境內大洪河(he)(he)(he)支流東河(he)(he)(he)上,壩(ba)(ba)(ba)址以上河(he)(he)(he)段(duan)長89Km。距長壽(shou)區城區約(yue)45km。壩(ba)(ba)(ba)址以上控制流域面(mian)積1317km2,多(duo)年平(ping)均徑流量(liang)約(yue)6.81億m3,多(duo)年平(ping)均流量(liang)21.6m3/s。壩(ba)(ba)(ba)址基巖為(wei)砂(sha)質(zhi)粘土(tu)巖和砂(sha)巖互層,壩(ba)(ba)(ba)基地(di)(di)層為(wei)砂(sha)質(zhi)粘土(tu)巖,兩岸壩(ba)(ba)(ba)肩(jian)為(wei)砂(sha)質(zhi)粘土(tu)巖和砂(sha)巖互層。地(di)(di)震(zhen)基本(ben)烈度為(wei)6度,不設防。
本工(gong)程(cheng)以發(fa)電(dian)(dian)(dian)為(wei)(wei)主,兼有防(fang)洪(hong)、灌(guan)溉(gai)、養(yang)殖等綜合(he)效(xiao)益。水(shui)(shui)(shui)(shui)(shui)庫總(zong)庫容(rong)(rong)3.43億m3,屬不完全年(nian)(nian)(nian)調節水(shui)(shui)(shui)(shui)(shui)庫。水(shui)(shui)(shui)(shui)(shui)庫正常蓄水(shui)(shui)(shui)(shui)(shui)位(wei)294.00m,死水(shui)(shui)(shui)(shui)(shui)位(wei)285.00m,設計(ji)洪(hong)水(shui)(shui)(shui)(shui)(shui)位(wei)295.42m, 校核(he)水(shui)(shui)(shui)(shui)(shui)位(wei)297.83m,前(qian)汛限水(shui)(shui)(shui)(shui)(shui)位(wei)290.00m。電(dian)(dian)(dian)站(zhan)裝機(ji)5臺,總(zong)裝機(ji)容(rong)(rong)量(liang)(liang)45MW(4×8.75+10),多(duo)年(nian)(nian)(nian)平均發(fa)電(dian)(dian)(dian)量(liang)(liang)1.123億KW·h。水(shui)(shui)(shui)(shui)(shui)電(dian)(dian)(dian)站(zhan)樞(shu)紐由(you)攔(lan)河壩(ba)、6座副壩(ba)、左、右(you)溢洪(hong)道(dao)(dao)、放(fang)空洞(dong)、引水(shui)(shui)(shui)(shui)(shui)系統及發(fa)電(dian)(dian)(dian)廠(chang)房等組成。攔(lan)河壩(ba)為(wei)(wei)多(duo)種(zhong)土(tu)質(zhi)壩(ba),壩(ba)頂高程(cheng)298.65m,最(zui)(zui)大(da)壩(ba)高36.50m,壩(ba)頂長189.10m。泄(xie)洪(hong)建(jian)(jian)筑(zhu)物(wu)(wu)(wu)主要(yao)參數(shu),最(zui)(zui)大(da)下(xia)泄(xie)流量(liang)(liang)(右(you)岸,正常溢洪(hong)道(dao)(dao))1400m3/s ;(左岸,非(fei)常溢洪(hong)道(dao)(dao))916m3/s,閘(zha)門(men)型(xing)式、尺寸:右(you)岸,18×8.5m(寬×高),弧形(xing)鋼閘(zha)門(men)1扇(shan);左岸,12×7.0m(寬×高),弧形(xing)鋼閘(zha)門(men)2扇(shan)。本工(gong)程(cheng)為(wei)(wei)二等(大(da)(2)型(xing))工(gong)程(cheng),大(da)壩(ba)等主要(yao)建(jian)(jian)筑(zhu)物(wu)(wu)(wu)為(wei)(wei)2級建(jian)(jian)筑(zhu)物(wu)(wu)(wu),設計(ji)洪(hong)水(shui)(shui)(shui)(shui)(shui)重(zhong)(zhong)現期100年(nian)(nian)(nian)、校核(he)洪(hong)水(shui)(shui)(shui)(shui)(shui)重(zhong)(zhong)現期為(wei)(wei)2000年(nian)(nian)(nian)。電(dian)(dian)(dian)站(zhan)廠(chang)房為(wei)(wei)地面(mian)式,為(wei)(wei)3級建(jian)(jian)筑(zhu)物(wu)(wu)(wu),設計(ji)洪(hong)水(shui)(shui)(shui)(shui)(shui)重(zhong)(zhong)現期為(wei)(wei)100年(nian)(nian)(nian),校核(he)洪(hong)水(shui)(shui)(shui)(shui)(shui)重(zhong)(zhong)現期為(wei)(wei)200年(nian)(nian)(nian)。
本工(gong)程由成(cheng)都(dou)勘(kan)測設計院設計,大洪(hong)河水(shui)力發(fa)電(dian)工(gong)程處施工(gong),于(yu)1958年8月(yue)(yue)(yue)開工(gong),1959年11月(yue)(yue)(yue)下(xia)閘蓄水(shui),1960年7月(yue)(yue)(yue)首臺機(ji)組并網發(fa)電(dian),1964年10月(yue)(yue)(yue)四臺機(ji)組全部投產(chan),2000年擴機(ji)一臺(五號機(ji))。大洪(hong)河大壩運行單(dan)位重慶(qing)中電(dian)獅子(zi)灘發(fa)電(dian)有限公司,主管單(dan)位重慶(qing)九龍(long)電(dian)力股份(fen)有限公司。
大洪河簡介
大洪(hong)(hong)河(he)(he)(he)(he)為(wei)(wei)長(chang)江北(bei)(bei)(bei)岸(an)的一條小(xiao)(xiao)支(zhi)流(liu)(liu),位(wei)于重(zhong)慶東(dong)部(bu)(bu)丘陵區(qu)(qu)(qu),于發源(yuan)(yuan)華鎣(ying)山(shan)(shan)南麓,源(yuan)(yuan)頭分東(dong)西(xi)(xi)兩支(zhi),以白(bai)龍(long)洞山(shan)(shan)為(wei)(wei)分水(shui)嶺,西(xi)(xi)支(zhi)名為(wei)(wei)御(yu)臨河(he)(he)(he)(he)(或(huo)西(xi)(xi)河(he)(he)(he)(he)),東(dong)支(zhi)名為(wei)(wei)大洪(hong)(hong)河(he)(he)(he)(he),原(yuan)名東(dong)河(he)(he)(he)(he),兩河(he)(he)(he)(he)并行向西(xi)(xi)南流(liu)(liu)至(zhi)渝北(bei)(bei)(bei)區(qu)(qu)(qu)江口匯合后亦(yi)稱御(yu)臨河(he)(he)(he)(he)。大洪(hong)(hong)河(he)(he)(he)(he)發源(yuan)(yuan)于四川省大竹(zhu)縣雙(shuang)溪(xi)鄉(xiang),流(liu)(liu)經(jing)大竹(zhu)、鄰水(shui)、長(chang)壽、渝北(bei)(bei)(bei)區(qu)(qu)(qu)境,在渝北(bei)(bei)(bei)區(qu)(qu)(qu)江口注入御(yu)臨河(he)(he)(he)(he),該(gai)河(he)(he)(he)(he)長(chang)175公(gong)里(li)(li),流(liu)(liu)域面積1356.4平方公(gong)里(li)(li)。大洪(hong)(hong)河(he)(he)(he)(he)流(liu)(liu)域形(xing)狀近似長(chang)方形(xing),地屬深(shen)丘和淺丘區(qu)(qu)(qu),河(he)(he)(he)(he)源(yuan)(yuan)及兩岸(an)山(shan)(shan)坡多(duo)為(wei)(wei)森林和雜草灌木叢,植被(bei)良好。流(liu)(liu)域地勢東(dong)北(bei)(bei)(bei)高(gao)西(xi)(xi)南低(di),東(dong)部(bu)(bu)與龍(long)溪(xi)河(he)(he)(he)(he)相接(jie),西(xi)(xi)部(bu)(bu)與嘉陵江支(zhi)流(liu)(liu)渠江相鄰,平均海拔(ba)高(gao)程(cheng)為(wei)(wei)530米。龍(long)門(men)灘(tan)以上河(he)(he)(he)(he)谷開闊、落(luo)差較(jiao)小(xiao)(xiao);龍(long)門(men)灘(tan)以下河(he)(he)(he)(he)谷狹深(shen),多(duo)險灘(tan)瀑(pu)布,其中龍(long)門(men)灘(tan)至(zhi)青(qing)煙(yan)洞河(he)(he)(he)(he)段長(chang)約(yue)5公(gong)里(li)(li),集(ji)中落(luo)差達70米,且為(wei)(wei)一河(he)(he)(he)(he)曲,大洪(hong)(hong)河(he)(he)(he)(he)水(shui)電站(zhan)即利(li)用這一集(ji)中落(luo)差修建而(er)成。
工程概況
壩(ba)址以上(shang)(shang)河(he)(he)(he)長約(yue)89公里,控制流(liu)(liu)域面積1317平(ping)(ping)(ping)方(fang)(fang)(fang)(fang)公里,占東(dong)河(he)(he)(he)流(liu)(liu)域面積95.4%。水庫正常蓄水位(wei)294.00米(mi)(mi)(農(nong)業限制水位(wei)292.00米(mi)(mi)),死水位(wei)285.00米(mi)(mi),防洪(hong)限制水位(wei)290.80米(mi)(mi)(前汛期)和292.00米(mi)(mi)(后(hou)汛期),校核洪(hong)水位(wei)297.80米(mi)(mi)(p=0.05%),設計洪(hong)水位(wei)295.40米(mi)(mi)(p=1%),水庫總庫容3.43億(yi)(yi)立方(fang)(fang)(fang)(fang)米(mi)(mi),為大二型水庫,具有年調(diao)節性能。大洪(hong)河(he)(he)(he)流(liu)(liu)域河(he)(he)(he)川徑(jing)(jing)流(liu)(liu)均(jun)(jun)主要由(you)降雨形成(cheng),壩(ba)址以上(shang)(shang)多年平(ping)(ping)(ping)均(jun)(jun)年降水量分(fen)別(bie)為為1171.4毫(hao)米(mi)(mi)。大洪(hong)河(he)(he)(he)水庫壩(ba)址多年平(ping)(ping)(ping)均(jun)(jun)流(liu)(liu)量為21.9立方(fang)(fang)(fang)(fang)米(mi)(mi)/秒,折合年徑(jing)(jing)流(liu)(liu)量6.91億(yi)(yi)立方(fang)(fang)(fang)(fang)米(mi)(mi),徑(jing)(jing)流(liu)(liu)深524.8毫(hao)米(mi)(mi),年平(ping)(ping)(ping)均(jun)(jun)徑(jing)(jing)流(liu)(liu)模數0.45。