水庫概況
水(shui)(shui)(shui)庫(ku)是(shi)天臺山(shan)國(guo)家級風景(jing)名勝(sheng)"十大(da)風景(jing)"之(zhi)一,也是(shi)天臺縣(xian)工(gong)(gong)(gong)農業生(sheng)產的命(ming)脈.水(shui)(shui)(shui)庫(ku)始(shi)建于1973年(nian)(nian)5月,工(gong)(gong)(gong)程(cheng)由省水(shui)(shui)(shui)電(dian)設(she)(she)計院設(she)(she)計,省水(shui)(shui)(shui)電(dian)建筑第(di)二(er)工(gong)(gong)(gong)程(cheng)處(chu)自營施工(gong)(gong)(gong),于1979年(nian)(nian)11月竣(jun)工(gong)(gong)(gong),工(gong)(gong)(gong)程(cheng)總投資2754萬(wan)元.1981年(nian)(nian)獲國(guo)家優秀設(she)(she)計獎,1982年(nian)(nian)獲國(guo)家優質(zhi)工(gong)(gong)(gong)程(cheng)銀質(zhi)獎。水(shui)(shui)(shui)庫(ku)樞紐由攔河大(da)壩(ba)(ba)(ba)、引(yin)水(shui)(shui)(shui)發(fa)電(dian)隧洞、發(fa)電(dian)廠房、升(sheng)壓站(zhan)等組成。攔河大(da)壩(ba)(ba)(ba)為(wei)變(bian)(bian)半徑變(bian)(bian)中(zhong)心角(jiao)混(hun)凝土雙(shuang)曲拱壩(ba)(ba)(ba),壩(ba)(ba)(ba)高(gao)(gao)74.3米(mi)(mi)(mi),壩(ba)(ba)(ba)頂(ding)高(gao)(gao)程(cheng)186.3米(mi)(mi)(mi)(吳淞高(gao)(gao)程(cheng)系,下同),壩(ba)(ba)(ba)頂(ding)弧長265米(mi)(mi)(mi). 最(zui)大(da)壩(ba)(ba)(ba)厚15.5米(mi)(mi)(mi).采(cai)用(yong)壩(ba)(ba)(ba)頂(ding)泄洪(hong)(hong)(hong)流量5730立方(fang)米(mi)(mi)(mi)每秒;右岸17壩(ba)(ba)(ba)段(duan)(duan),設(she)(she)3*3米(mi)(mi)(mi)泄洪(hong)(hong)(hong)孔(kong)1個;大(da)壩(ba)(ba)(ba)6,12,18三(san)個壩(ba)(ba)(ba)段(duan)(duan)設(she)(she)有(you)觀測大(da)壩(ba)(ba)(ba)變(bian)(bian)形的裝置;大(da)壩(ba)(ba)(ba)下游700米(mi)(mi)(mi)處(chu)建二(er)道拱壩(ba)(ba)(ba)1座;水(shui)(shui)(shui)庫(ku)上游庫(ku)區有(you)林場(chang)和(he)漁(yu)場(chang),管理3萬(wan)畝山(shan)林和(he)6730畝水(shui)(shui)(shui)面(mian)。壩(ba)(ba)(ba)址(zhi)以上集水(shui)(shui)(shui)面(mian)積296平方(fang)公(gong)里,總庫(ku)容(rong)(rong)1.99億(yi)立方(fang)米(mi)(mi)(mi),正(zheng)常(chang)庫(ku)容(rong)(rong)1.22億(yi)立方(fang)米(mi)(mi)(mi)。防洪(hong)(hong)(hong)庫(ku)容(rong)(rong)0.77億(yi)立方(fang)米(mi)(mi)(mi),灌溉發(fa)電(dian)庫(ku)容(rong)(rong)0.91億(yi)立方(fang)米(mi)(mi)(mi),正(zheng)常(chang)水(shui)(shui)(shui)位176.04米(mi)(mi)(mi),死水(shui)(shui)(shui)位156.04米(mi)(mi)(mi),保(bao)壩(ba)(ba)(ba)校核洪(hong)(hong)(hong)水(shui)(shui)(shui)位186.34米(mi)(mi)(mi),下游防洪(hong)(hong)(hong)設(she)(she)計標準為(wei)20年(nian)(nian)一遇,壩(ba)(ba)(ba)高(gao)(gao)70米(mi)(mi)(mi),壩(ba)(ba)(ba)頂(ding)寬(kuan)4米(mi)(mi)(mi),壩(ba)(ba)(ba)底寬(kuan)15.5米(mi)(mi)(mi),澆(jiao)筑混(hun)凝土12萬(wan)立方(fang)米(mi)(mi)(mi),北干渠全(quan)長達72.26公(gong)里。
灌溉防洪
水(shui)(shui)庫(ku)已(yi)灌溉(gai)(gai)(gai)為主,庫(ku)區年來水(shui)(shui)量3.3億立方米,承擔了始豐溪兩岸18萬畝農田的灌溉(gai)(gai)(gai)任(ren)務(wu),實際受(shou)益面(mian)積16.64萬畝,占(zhan)全縣農田面(mian)積的62.5%,設(she)計灌溉(gai)(gai)(gai)保(bao)證(zheng)率90%,水(shui)(shui)庫(ku)干流(liu)總長35.2公里,結合防(fang)洪、發電(dian)(dian)。設(she)計灌溉(gai)(gai)(gai)面(mian)積20萬畝,防(fang)洪受(shou)益6.5萬畝,結合灌溉(gai)(gai)(gai)放水(shui)(shui)建6000千瓦電(dian)(dian)站1座,平(ping)均年發電(dian)(dian)量2480萬千瓦時。
水庫(ku)灌(guan)區干(gan)渠(qu)總長95.3公(gong)里,其中北(bei)干(gan)渠(qu)西起西頭陳,東抵洪疇村,全(quan)長71.7公(gong)里,是天(tian)臺縣(xian)農田灌(guan)溉(gai)主動脈,渠(qu)首設計(ji)流量13.82立方(fang)米每秒。
里(li)石門水(shui)庫(ku)灌溉面積(ji)占(zhan)全縣(xian)(xian)耕地62%的灌區(qu)16畝農(nong)田,抗(kang)旱能力(li)提高到(dao)70多天,大旱保收(shou),使本(ben)縣(xian)(xian)糧食年(nian)(nian)年(nian)(nian)增產,自給有余,防(fang)洪(hong)面積(ji)6.5萬畝,保護(hu)沿溪兩岸人口30萬人,減輕臨海市(shi)16萬畝澇災(zai),已(yi)攔蓄13次較(jiao)大洪(hong)峰,已(yi)開墾利用灘地一萬余畝.灌溉防(fang)洪(hong)效益已(yi)達5.1億元(yuan)。
水庫經濟
庫(ku)渠道有總裝機8505千瓦的5座電(dian)站已發電(dian)超過5億(yi)度.水庫(ku)養魚(yu)6730畝,年(nian)產魚(yu)100噸.庫(ku)區(qu)2.9萬(wan)畝山林(lin)經封山育(yu)林(lin)后(hou)木(mu)(mu)材蓄積量已達7萬(wan)立方(fang)米(mi),已營造各種喬木(mu)(mu),柑橘和茶(cha)葉等(deng)經濟林(lin)1700畝.水利經濟和各項建設管理等(deng)已取(qu)得了豐碩(shuo)成果。
愛國主義教育基地
里石門水庫始(shi)建于1973年5月,總投資2754萬元,除國(guo)家撥款570萬元外,其余經費均由縣里自籌解決。天臺人民(min)發揚自力更生、艱苦奮(fen)斗的(de)創業精神(shen),7952位民(min)工、8371位職工自帶工具、風餐露宿,日(ri)夜奮(fen)戰在施工現場,克服了無(wu)數難以想象的(de)困難,把昔日(ri)荒(huang)涼(liang)的(de)山溝改(gai)變成(cheng)為一座雄偉壯麗(li)的(de)水利工程。自1995年被臺州(zhou)市委(wei)、市人民(min)政府確(que)定(ding)為首批愛國(guo)主義教育基地。