水庫概況
八(ba)河水庫(ku)(ku)位于(yu)山東省威海(hai)(hai)榮成市,始建于(yu)1978年(nian),是一(yi)座(zuo)大型海(hai)(hai)灣水庫(ku)(ku),地處王連河下游八(ba)河港灣處,控制流域面(mian)積256平方千米(mi),原設計(ji)總庫(ku)(ku)容4570萬(wan)立方米(mi),調節(jie)庫(ku)(ku)容890萬(wan)立方米(mi),死(si)庫(ku)(ku)容140萬(wan)立方米(mi),工程標準為百年(nian)一(yi)遇(yu)洪水設計(ji),五百年(nian)一(yi)遇(yu)洪水校核。
2000年水(shui)(shui)利部(bu)批(pi)準榮(rong)成市(shi)八(ba)(ba)(ba)河水(shui)(shui)庫(ku)擴(kuo)建工程(cheng)項目建議書,2001年6月15日(ri)山東省(sheng)計委(wei)與山東省(sheng)水(shui)(shui)利廳以魯水(shui)(shui)重點[2001]588號文(wen)批(pi)復了榮(rong)成市(shi)八(ba)(ba)(ba)河水(shui)(shui)庫(ku)擴(kuo)建工程(cheng)初(chu)步設(she)計,八(ba)(ba)(ba)河水(shui)(shui)庫(ku)擴(kuo)建工程(cheng)包括(kuo)主壩、副壩、溢洪閘三(san)個單(dan)位(wei)(wei)工程(cheng),工程(cheng)等(deng)別為(wei)Ⅱ等(deng),主要建筑物級別為(wei)二級。擴(kuo)建后的八(ba)(ba)(ba)河水(shui)(shui)庫(ku)防洪標準為(wei)五(wu)十年一遇洪水(shui)(shui)設(she)計,三(san)百(bai)年一遇洪水(shui)(shui)校核;設(she)計總庫(ku)容(rong)為(wei)1.06億立方(fang)(fang)米 ,校核洪水(shui)(shui)位(wei)(wei)7.05米(黃(huang)海高程(cheng),下同);調節庫(ku)容(rong)7105.0萬(wan)(wan)立方(fang)(fang)米,正常蓄(xu)水(shui)(shui)位(wei)(wei)6.10米;死(si)庫(ku)容(rong)1145.0萬(wan)(wan)立方(fang)(fang)米,死(si)水(shui)(shui)位(wei)(wei)1.90米。城市(shi)供水(shui)(shui)規(gui)模為(wei)每(mei)日(ri)4.0萬(wan)(wan)噸,多年平均供水(shui)(shui)量1394.0萬(wan)(wan)立方(fang)(fang)米,供水(shui)(shui)保(bao)(bao)證率95%;農業供水(shui)(shui)保(bao)(bao)證灌(guan)溉面積10.0萬(wan)(wan)畝,多年平均供水(shui)(shui)量1652.0萬(wan)(wan)立方(fang)(fang)米,供水(shui)(shui)保(bao)(bao)證率50%。
為有(you)效緩解榮成(cheng)(cheng)市(shi)水(shui)(shui)資源緊缺狀(zhuang)況的(de)需(xu)要(yao)(yao),同時滿足現代化水(shui)(shui)網和水(shui)(shui)生(sheng)態文明城市(shi)建設(she)的(de)需(xu)要(yao)(yao),榮成(cheng)(cheng)計(ji)劃(hua)在保證水(shui)(shui)庫安全的(de)前(qian)提下,適(shi)度抬高水(shui)(shui)庫蓄水(shui)(shui)位,擴大庫容(rong)。目前(qian)八河水(shui)(shui)庫的(de)警戒(jie)水(shui)(shui)位是(shi)2.5米(mi),此次擴容(rong)工(gong)(gong)(gong)(gong)程(cheng)采(cai)取抬田(tian)方式將(jiang)(jiang)蓄水(shui)(shui)位提高至4.5米(mi),大壩、溢洪閘等主(zhu)體(ti)工(gong)(gong)(gong)(gong)程(cheng)無需(xu)改造。抬田(tian)工(gong)(gong)(gong)(gong)程(cheng)主(zhu)要(yao)(yao)是(shi)將(jiang)(jiang)處于(yu)淹沒(mei)區的(de)耕(geng)地(di)普遍抬高,并(bing)(bing)開辟(pi)新的(de)耕(geng)地(di),并(bing)(bing)配套完(wan)善的(de)灌溉、排水(shui)(shui)設(she)施,形成(cheng)(cheng)“旱能灌、澇能排”的(de)高標(biao)準農(nong)田(tian)。抬田(tian)工(gong)(gong)(gong)(gong)程(cheng)在許多水(shui)(shui)利樞紐(niu)地(di)區已經取得成(cheng)(cheng)功,有(you)效減少了耕(geng)地(di)淹沒(mei)。據(ju)介紹,待(dai)各(ge)項前(qian)期(qi)工(gong)(gong)(gong)(gong)作籌(chou)備好后(hou),該工(gong)(gong)(gong)(gong)程(cheng)就開工(gong)(gong)(gong)(gong),預計(ji)工(gong)(gong)(gong)(gong)期(qi)為1年(nian) ,將(jiang)(jiang)于(yu)2016年(nian)1月(yue)完(wan)工(gong)(gong)(gong)(gong)。
水庫效益
八(ba)(ba)河水(shui)庫(ku)(ku)位于(yu)(yu)崖頭城(cheng)(cheng)(cheng)區和石(shi)島(dao)城(cheng)(cheng)(cheng)區之間,坐落(luo)于(yu)(yu)小落(luo)河、王連(lian)河下游(you)入(ru)海口,原八(ba)(ba)河港(gang)灣處。往返(fan)于(yu)(yu)兩城(cheng)(cheng)(cheng)區時,市民會途(tu)經八(ba)(ba)河港(gang)大橋,橋下就是(shi)八(ba)(ba)河水(shui)庫(ku)(ku)的泄(xie)洪閘(zha)門。該水(shui)庫(ku)(ku)1975年(nian)(nian)12月(yue)動工(gong)(gong)興建,1978年(nian)(nian)建成中型(xing)(xing)水(shui)庫(ku)(ku),2001年(nian)(nian)實施了(le)擴建工(gong)(gong)程,2006年(nian)(nian)5月(yue)省水(shui)利廳對八(ba)(ba)河水(shui)庫(ku)(ku)擴建工(gong)(gong)程進(jin)行了(le)竣工(gong)(gong)驗收(shou)。八(ba)(ba)河水(shui)庫(ku)(ku)目前是(shi)一座(zuo)集城(cheng)(cheng)(cheng)市供(gong)(gong)水(shui)、灌溉(gai)、養殖等綜合(he)利用為一體的大型(xing)(xing)水(shui)庫(ku)(ku),也是(shi)榮成目前唯(wei)一的大型(xing)(xing)水(shui)庫(ku)(ku)。如今的八(ba)(ba)河水(shui)庫(ku)(ku)是(shi)石(shi)島(dao)城(cheng)(cheng)(cheng)區重要的生產生活用水(shui)水(shui)源(yuan)地(di),并為滕家鎮(zhen)、嶗(lao)山街道(dao)、王連(lian)街道(dao)等鎮(zhen)街提供(gong)(gong)農(nong)田(tian)灌溉(gai)用水(shui)。