概況
大(da)洪河(he)水電(dian)站(zhan)位于重慶市長壽區境內大(da)洪河(he)支流(liu)東河(he)上(shang),壩(ba)址以(yi)上(shang)河(he)段長89Km。距長壽區城區約45km。壩(ba)址以(yi)上(shang)控制(zhi)流(liu)域面積1317km2,多年(nian)平均(jun)徑流(liu)量約6.81億m3,多年(nian)平均(jun)流(liu)量21.6m3/s。壩(ba)址基巖(yan)(yan)(yan)為砂(sha)質粘(zhan)土巖(yan)(yan)(yan)和(he)砂(sha)巖(yan)(yan)(yan)互層(ceng),壩(ba)基地層(ceng)為砂(sha)質粘(zhan)土巖(yan)(yan)(yan),兩岸壩(ba)肩為砂(sha)質粘(zhan)土巖(yan)(yan)(yan)和(he)砂(sha)巖(yan)(yan)(yan)互層(ceng)。地震基本烈度(du)為6度(du),不設防。
本工(gong)程(cheng)以(yi)發(fa)電(dian)(dian)為(wei)(wei)(wei)主(zhu),兼有防(fang)洪(hong)(hong)(hong)、灌溉、養殖等(deng)(deng)綜合效益(yi)。水(shui)(shui)庫總庫容3.43億m3,屬不完全年(nian)調(diao)節水(shui)(shui)庫。水(shui)(shui)庫正(zheng)常(chang)蓄水(shui)(shui)位(wei)(wei)294.00m,死水(shui)(shui)位(wei)(wei)285.00m,設計(ji)洪(hong)(hong)(hong)水(shui)(shui)位(wei)(wei)295.42m, 校核(he)水(shui)(shui)位(wei)(wei)297.83m,前汛限水(shui)(shui)位(wei)(wei)290.00m。電(dian)(dian)站(zhan)裝(zhuang)機5臺,總裝(zhuang)機容量45MW(4×8.75+10),多(duo)年(nian)平均發(fa)電(dian)(dian)量1.123億KW·h。水(shui)(shui)電(dian)(dian)站(zhan)樞紐由攔河壩(ba)、6座副壩(ba)、左(zuo)、右溢洪(hong)(hong)(hong)道(dao)、放空洞(dong)、引水(shui)(shui)系(xi)統及發(fa)電(dian)(dian)廠房(fang)等(deng)(deng)組(zu)成。攔河壩(ba)為(wei)(wei)(wei)多(duo)種土質壩(ba),壩(ba)頂高(gao)程(cheng)298.65m,最(zui)大(da)壩(ba)高(gao)36.50m,壩(ba)頂長189.10m。泄洪(hong)(hong)(hong)建筑物主(zhu)要(yao)參數(shu),最(zui)大(da)下泄流(liu)量(右岸,正(zheng)常(chang)溢洪(hong)(hong)(hong)道(dao))1400m3/s ;(左(zuo)岸,非常(chang)溢洪(hong)(hong)(hong)道(dao))916m3/s,閘(zha)門(men)型式(shi)、尺寸:右岸,18×8.5m(寬(kuan)×高(gao)),弧(hu)形鋼閘(zha)門(men)1扇;左(zuo)岸,12×7.0m(寬(kuan)×高(gao)),弧(hu)形鋼閘(zha)門(men)2扇。本工(gong)程(cheng)為(wei)(wei)(wei)二等(deng)(deng)(大(da)(2)型)工(gong)程(cheng),大(da)壩(ba)等(deng)(deng)主(zhu)要(yao)建筑物為(wei)(wei)(wei)2級建筑物,設計(ji)洪(hong)(hong)(hong)水(shui)(shui)重(zhong)(zhong)現(xian)期100年(nian)、校核(he)洪(hong)(hong)(hong)水(shui)(shui)重(zhong)(zhong)現(xian)期為(wei)(wei)(wei)2000年(nian)。電(dian)(dian)站(zhan)廠房(fang)為(wei)(wei)(wei)地面式(shi),為(wei)(wei)(wei)3級建筑物,設計(ji)洪(hong)(hong)(hong)水(shui)(shui)重(zhong)(zhong)現(xian)期為(wei)(wei)(wei)100年(nian),校核(he)洪(hong)(hong)(hong)水(shui)(shui)重(zhong)(zhong)現(xian)期為(wei)(wei)(wei)200年(nian)。
本(ben)工程由成都勘測設(she)計(ji)院設(she)計(ji),大洪(hong)河(he)(he)水力發電工程處施(shi)工,于1958年(nian)8月(yue)(yue)開工,1959年(nian)11月(yue)(yue)下閘蓄水,1960年(nian)7月(yue)(yue)首臺機組(zu)并(bing)網發電,1964年(nian)10月(yue)(yue)四臺機組(zu)全部投產(chan),2000年(nian)擴機一臺(五號機)。大洪(hong)河(he)(he)大壩運行(xing)單(dan)位重慶(qing)中電獅子灘發電有限公司,主管單(dan)位重慶(qing)九龍電力股份有限公司。
大洪河簡介
大(da)(da)(da)(da)洪(hong)河(he)(he)(he)為長江北岸的一條(tiao)小支(zhi)(zhi)流,位于重(zhong)慶東(dong)部丘(qiu)陵區(qu)(qu),于發源(yuan)華鎣(ying)山(shan)南麓(lu),源(yuan)頭分(fen)東(dong)西(xi)(xi)(xi)兩(liang)支(zhi)(zhi),以(yi)白龍(long)洞(dong)山(shan)為分(fen)水嶺,西(xi)(xi)(xi)支(zhi)(zhi)名(ming)為御(yu)(yu)(yu)臨(lin)河(he)(he)(he)(或西(xi)(xi)(xi)河(he)(he)(he)),東(dong)支(zhi)(zhi)名(ming)為大(da)(da)(da)(da)洪(hong)河(he)(he)(he),原名(ming)東(dong)河(he)(he)(he),兩(liang)河(he)(he)(he)并行向(xiang)西(xi)(xi)(xi)南流至渝(yu)北區(qu)(qu)江口匯合后(hou)亦稱(cheng)御(yu)(yu)(yu)臨(lin)河(he)(he)(he)。大(da)(da)(da)(da)洪(hong)河(he)(he)(he)發源(yuan)于四川省大(da)(da)(da)(da)竹縣雙溪鄉,流經(jing)大(da)(da)(da)(da)竹、鄰水、長壽、渝(yu)北區(qu)(qu)境,在(zai)渝(yu)北區(qu)(qu)江口注(zhu)入(ru)御(yu)(yu)(yu)臨(lin)河(he)(he)(he),該河(he)(he)(he)長175公里(li),流域(yu)面積1356.4平(ping)(ping)方公里(li)。大(da)(da)(da)(da)洪(hong)河(he)(he)(he)流域(yu)形狀近似長方形,地屬深丘(qiu)和(he)淺丘(qiu)區(qu)(qu),河(he)(he)(he)源(yuan)及兩(liang)岸山(shan)坡多為森林(lin)和(he)雜草灌木(mu)叢,植被良好(hao)。流域(yu)地勢(shi)東(dong)北高(gao)西(xi)(xi)(xi)南低,東(dong)部與龍(long)溪河(he)(he)(he)相接,西(xi)(xi)(xi)部與嘉陵江支(zhi)(zhi)流渠江相鄰,平(ping)(ping)均(jun)海拔(ba)高(gao)程為530米(mi)。龍(long)門灘(tan)(tan)以(yi)上(shang)河(he)(he)(he)谷開闊(kuo)、落(luo)差(cha)較小;龍(long)門灘(tan)(tan)以(yi)下河(he)(he)(he)谷狹深,多險灘(tan)(tan)瀑(pu)布,其(qi)中龍(long)門灘(tan)(tan)至青煙洞(dong)河(he)(he)(he)段(duan)長約(yue)5公里(li),集中落(luo)差(cha)達70米(mi),且(qie)為一河(he)(he)(he)曲,大(da)(da)(da)(da)洪(hong)河(he)(he)(he)水電站即利(li)用這一集中落(luo)差(cha)修建而成。
工程概況
壩(ba)址(zhi)(zhi)以上河(he)長約89公里,控制流(liu)(liu)(liu)域面(mian)積(ji)1317平方公里,占東河(he)流(liu)(liu)(liu)域面(mian)積(ji)95.4%。水庫正常蓄水位(wei)(wei)(wei)(wei)294.00米(mi)(mi)(農業(ye)限(xian)制水位(wei)(wei)(wei)(wei)292.00米(mi)(mi)),死水位(wei)(wei)(wei)(wei)285.00米(mi)(mi),防洪(hong)(hong)限(xian)制水位(wei)(wei)(wei)(wei)290.80米(mi)(mi)(前(qian)汛期(qi))和292.00米(mi)(mi)(后汛期(qi)),校核洪(hong)(hong)水位(wei)(wei)(wei)(wei)297.80米(mi)(mi)(p=0.05%),設(she)計洪(hong)(hong)水位(wei)(wei)(wei)(wei)295.40米(mi)(mi)(p=1%),水庫總庫容3.43億立方米(mi)(mi),為(wei)大二型水庫,具有年(nian)(nian)調節性能(neng)。大洪(hong)(hong)河(he)流(liu)(liu)(liu)域河(he)川徑流(liu)(liu)(liu)均(jun)(jun)主(zhu)要由(you)降雨形成,壩(ba)址(zhi)(zhi)以上多年(nian)(nian)平均(jun)(jun)年(nian)(nian)降水量(liang)分別為(wei)為(wei)1171.4毫米(mi)(mi)。大洪(hong)(hong)河(he)水庫壩(ba)址(zhi)(zhi)多年(nian)(nian)平均(jun)(jun)流(liu)(liu)(liu)量(liang)為(wei)21.9立方米(mi)(mi)/秒,折合年(nian)(nian)徑流(liu)(liu)(liu)量(liang)6.91億立方米(mi)(mi),徑流(liu)(liu)(liu)深(shen)524.8毫米(mi)(mi),年(nian)(nian)平均(jun)(jun)徑流(liu)(liu)(liu)模數0.45。