水庫概況
八(ba)河(he)水(shui)(shui)庫(ku)(ku)(ku)位于(yu)山東(dong)省威海榮成(cheng)市,始建于(yu)1978年,是一座大型(xing)海灣(wan)水(shui)(shui)庫(ku)(ku)(ku),地處王(wang)連河(he)下游八(ba)河(he)港灣(wan)處,控(kong)制流域面(mian)積256平(ping)方(fang)千米(mi),原設計(ji)總庫(ku)(ku)(ku)容4570萬(wan)立方(fang)米(mi),調(diao)節庫(ku)(ku)(ku)容890萬(wan)立方(fang)米(mi),死庫(ku)(ku)(ku)容140萬(wan)立方(fang)米(mi),工程標準(zhun)為百年一遇洪水(shui)(shui)設計(ji),五百年一遇洪水(shui)(shui)校(xiao)核。
2000年(nian)(nian)(nian)水(shui)(shui)(shui)利部批準(zhun)榮(rong)成(cheng)市八(ba)河水(shui)(shui)(shui)庫(ku)擴(kuo)(kuo)建(jian)(jian)工(gong)程(cheng)(cheng)項目建(jian)(jian)議書,2001年(nian)(nian)(nian)6月15日山東省(sheng)(sheng)計(ji)委與山東省(sheng)(sheng)水(shui)(shui)(shui)利廳以魯(lu)水(shui)(shui)(shui)重點[2001]588號(hao)文批復了(le)榮(rong)成(cheng)市八(ba)河水(shui)(shui)(shui)庫(ku)擴(kuo)(kuo)建(jian)(jian)工(gong)程(cheng)(cheng)初步設(she)計(ji),八(ba)河水(shui)(shui)(shui)庫(ku)擴(kuo)(kuo)建(jian)(jian)工(gong)程(cheng)(cheng)包括主壩、副壩、溢洪(hong)閘(zha)三個單(dan)位工(gong)程(cheng)(cheng),工(gong)程(cheng)(cheng)等別(bie)為Ⅱ等,主要(yao)建(jian)(jian)筑物級別(bie)為二級。擴(kuo)(kuo)建(jian)(jian)后的八(ba)河水(shui)(shui)(shui)庫(ku)防(fang)洪(hong)標準(zhun)為五十年(nian)(nian)(nian)一遇(yu)(yu)洪(hong)水(shui)(shui)(shui)設(she)計(ji),三百年(nian)(nian)(nian)一遇(yu)(yu)洪(hong)水(shui)(shui)(shui)校核(he);設(she)計(ji)總(zong)庫(ku)容(rong)為1.06億(yi)立(li)(li)方(fang)(fang)米(mi) ,校核(he)洪(hong)水(shui)(shui)(shui)位7.05米(mi)(黃(huang)海高程(cheng)(cheng),下同);調節庫(ku)容(rong)7105.0萬(wan)立(li)(li)方(fang)(fang)米(mi),正常蓄水(shui)(shui)(shui)位6.10米(mi);死庫(ku)容(rong)1145.0萬(wan)立(li)(li)方(fang)(fang)米(mi),死水(shui)(shui)(shui)位1.90米(mi)。城市供(gong)水(shui)(shui)(shui)規模為每日4.0萬(wan)噸,多(duo)年(nian)(nian)(nian)平均供(gong)水(shui)(shui)(shui)量(liang)1394.0萬(wan)立(li)(li)方(fang)(fang)米(mi),供(gong)水(shui)(shui)(shui)保(bao)證(zheng)率95%;農業供(gong)水(shui)(shui)(shui)保(bao)證(zheng)灌溉面積10.0萬(wan)畝,多(duo)年(nian)(nian)(nian)平均供(gong)水(shui)(shui)(shui)量(liang)1652.0萬(wan)立(li)(li)方(fang)(fang)米(mi),供(gong)水(shui)(shui)(shui)保(bao)證(zheng)率50%。
為有效緩解榮(rong)成(cheng)市(shi)水資源緊缺狀況(kuang)的(de)(de)需(xu)(xu)要(yao),同時滿足現代化水網和水生態文明城(cheng)市(shi)建設(she)的(de)(de)需(xu)(xu)要(yao),榮(rong)成(cheng)計(ji)劃在(zai)保(bao)證(zheng)水庫安全的(de)(de)前(qian)提下(xia),適度抬(tai)(tai)高水庫蓄(xu)水位,擴大(da)庫容(rong)(rong)。目前(qian)八河水庫的(de)(de)警戒水位是2.5米,此次擴容(rong)(rong)工(gong)(gong)(gong)程(cheng)采(cai)取抬(tai)(tai)田(tian)方式將(jiang)(jiang)蓄(xu)水位提高至(zhi)4.5米,大(da)壩、溢洪閘等主(zhu)體工(gong)(gong)(gong)程(cheng)無需(xu)(xu)改造(zao)。抬(tai)(tai)田(tian)工(gong)(gong)(gong)程(cheng)主(zhu)要(yao)是將(jiang)(jiang)處于淹沒區的(de)(de)耕地(di)普遍抬(tai)(tai)高,并開辟新的(de)(de)耕地(di),并配套完善(shan)的(de)(de)灌(guan)溉、排水設(she)施,形(xing)成(cheng)“旱能(neng)灌(guan)、澇能(neng)排”的(de)(de)高標(biao)準農田(tian)。抬(tai)(tai)田(tian)工(gong)(gong)(gong)程(cheng)在(zai)許多水利樞紐地(di)區已經取得成(cheng)功,有效減少了耕地(di)淹沒。據介紹,待各項前(qian)期(qi)工(gong)(gong)(gong)作籌備好后,該工(gong)(gong)(gong)程(cheng)就開工(gong)(gong)(gong),預計(ji)工(gong)(gong)(gong)期(qi)為1年 ,將(jiang)(jiang)于2016年1月完工(gong)(gong)(gong)。
水庫效益
八(ba)(ba)河(he)水(shui)(shui)(shui)(shui)庫(ku)位于崖頭城(cheng)區和石島城(cheng)區之間,坐落于小落河(he)、王連河(he)下游(you)入海口,原八(ba)(ba)河(he)港灣處。往返于兩(liang)城(cheng)區時(shi),市(shi)民會途經八(ba)(ba)河(he)港大橋(qiao),橋(qiao)下就是(shi)(shi)八(ba)(ba)河(he)水(shui)(shui)(shui)(shui)庫(ku)的(de)泄洪閘門(men)。該水(shui)(shui)(shui)(shui)庫(ku)1975年12月(yue)動工(gong)(gong)興建(jian),1978年建(jian)成(cheng)中(zhong)型水(shui)(shui)(shui)(shui)庫(ku),2001年實(shi)施(shi)了擴(kuo)建(jian)工(gong)(gong)程,2006年5月(yue)省(sheng)水(shui)(shui)(shui)(shui)利廳對(dui)八(ba)(ba)河(he)水(shui)(shui)(shui)(shui)庫(ku)擴(kuo)建(jian)工(gong)(gong)程進行了竣工(gong)(gong)驗收(shou)。八(ba)(ba)河(he)水(shui)(shui)(shui)(shui)庫(ku)目前(qian)是(shi)(shi)一座集城(cheng)市(shi)供水(shui)(shui)(shui)(shui)、灌溉(gai)、養殖等綜合利用為一體(ti)的(de)大型水(shui)(shui)(shui)(shui)庫(ku),也(ye)是(shi)(shi)榮成(cheng)目前(qian)唯一的(de)大型水(shui)(shui)(shui)(shui)庫(ku)。如今的(de)八(ba)(ba)河(he)水(shui)(shui)(shui)(shui)庫(ku)是(shi)(shi)石島城(cheng)區重要的(de)生產(chan)生活用水(shui)(shui)(shui)(shui)水(shui)(shui)(shui)(shui)源(yuan)地,并為滕家鎮(zhen)、嶗(lao)山街道、王連街道等鎮(zhen)街提供農田(tian)灌溉(gai)用水(shui)(shui)(shui)(shui)。