簡介
水(shui)(shui)(shui)(shui)庫(ku)(ku)建(jian)(jian)(jian)設(she)工(gong)程(cheng)(cheng)由原欽州地區水(shui)(shui)(shui)(shui)利電(dian)(dian)(dian)力(li)設(she)計(ji)(ji)隊勘測設(she)計(ji)(ji),報(bao)自治區水(shui)(shui)(shui)(shui)利電(dian)(dian)(dian)力(li)廳審批(pi)后,由原防城縣負責組(zu)織(zhi)實(shi)施(shi),于(yu)(yu)(yu)1978年(nian)動工(gong)興建(jian)(jian)(jian),1982年(nian)基本建(jian)(jian)(jian)成(cheng)(cheng)投(tou)入運(yun)行。至1990年(nian)底,水(shui)(shui)(shui)(shui)庫(ku)(ku)工(gong)程(cheng)(cheng)完成(cheng)(cheng)總(zong)投(tou)資(zi)1301萬元。建(jian)(jian)(jian)成(cheng)(cheng)水(shui)(shui)(shui)(shui)庫(ku)(ku)主(zhu)體工(gong)程(cheng)(cheng)建(jian)(jian)(jian)筑物有:主(zhu)壩(ba)(ba)(ba)(ba)(ba)1座,為均質土壩(ba)(ba)(ba)(ba)(ba),壩(ba)(ba)(ba)(ba)(ba)頂(ding)高程(cheng)(cheng)186.50米(mi)(mi)(mi)(mi)(mi)(mi)(mi)(mi)(mi)(mi),壩(ba)(ba)(ba)(ba)(ba)頂(ding)長(chang)(chang)378米(mi)(mi)(mi)(mi)(mi)(mi)(mi)(mi)(mi)(mi),壩(ba)(ba)(ba)(ba)(ba)頂(ding)寬(kuan)(kuan)7米(mi)(mi)(mi)(mi)(mi)(mi)(mi)(mi)(mi)(mi)~8米(mi)(mi)(mi)(mi)(mi)(mi)(mi)(mi)(mi)(mi),最(zui)(zui)大(da)壩(ba)(ba)(ba)(ba)(ba)高42米(mi)(mi)(mi)(mi)(mi)(mi)(mi)(mi)(mi)(mi)。副壩(ba)(ba)(ba)(ba)(ba)3座,均位于(yu)(yu)(yu)水(shui)(shui)(shui)(shui)庫(ku)(ku)北面(mian)那(nei)勉溝的(de)分(fen)水(shui)(shui)(shui)(shui)嶺處,為土壩(ba)(ba)(ba)(ba)(ba)工(gong)程(cheng)(cheng)。其中1號副壩(ba)(ba)(ba)(ba)(ba)最(zui)(zui)大(da)壩(ba)(ba)(ba)(ba)(ba)高15.60米(mi)(mi)(mi)(mi)(mi)(mi)(mi)(mi)(mi)(mi),壩(ba)(ba)(ba)(ba)(ba)頂(ding)寬(kuan)(kuan)6米(mi)(mi)(mi)(mi)(mi)(mi)(mi)(mi)(mi)(mi),壩(ba)(ba)(ba)(ba)(ba)頂(ding)長(chang)(chang)172米(mi)(mi)(mi)(mi)(mi)(mi)(mi)(mi)(mi)(mi);2號副壩(ba)(ba)(ba)(ba)(ba)最(zui)(zui)大(da)壩(ba)(ba)(ba)(ba)(ba)高6.7米(mi)(mi)(mi)(mi)(mi)(mi)(mi)(mi)(mi)(mi),壩(ba)(ba)(ba)(ba)(ba)頂(ding)寬(kuan)(kuan)6米(mi)(mi)(mi)(mi)(mi)(mi)(mi)(mi)(mi)(mi),壩(ba)(ba)(ba)(ba)(ba)頂(ding)長(chang)(chang)110米(mi)(mi)(mi)(mi)(mi)(mi)(mi)(mi)(mi)(mi);3號副壩(ba)(ba)(ba)(ba)(ba)最(zui)(zui)大(da)壩(ba)(ba)(ba)(ba)(ba)高5.70米(mi)(mi)(mi)(mi)(mi)(mi)(mi)(mi)(mi)(mi),壩(ba)(ba)(ba)(ba)(ba)頂(ding)寬(kuan)(kuan)6米(mi)(mi)(mi)(mi)(mi)(mi)(mi)(mi)(mi)(mi),壩(ba)(ba)(ba)(ba)(ba)頂(ding)長(chang)(chang)78米(mi)(mi)(mi)(mi)(mi)(mi)(mi)(mi)(mi)(mi)。溢洪(hong)道(dao)1座,位于(yu)(yu)(yu)主(zhu)壩(ba)(ba)(ba)(ba)(ba)右(you)端,由進(jin)水(shui)(shui)(shui)(shui)段(duan)(duan)及閘室、陡坡(po)、消力(li)池(chi)、尾水(shui)(shui)(shui)(shui)渠和護岸(an)等部分(fen)組(zu)成(cheng)(cheng)。溢流堰頂(ding)高程(cheng)(cheng)176米(mi)(mi)(mi)(mi)(mi)(mi)(mi)(mi)(mi)(mi),設(she)有9米(mi)(mi)(mi)(mi)(mi)(mi)(mi)(mi)(mi)(mi)×6米(mi)(mi)(mi)(mi)(mi)(mi)(mi)(mi)(mi)(mi)鋼板弧型閘門,陡坡(po)段(duan)(duan)寬(kuan)(kuan)19.60米(mi)(mi)(mi)(mi)(mi)(mi)(mi)(mi)(mi)(mi)一30米(mi)(mi)(mi)(mi)(mi)(mi)(mi)(mi)(mi)(mi)。消力(li)池(chi)長(chang)(chang)30米(mi)(mi)(mi)(mi)(mi)(mi)(mi)(mi)(mi)(mi),寬(kuan)(kuan)10米(mi)(mi)(mi)(mi)(mi)(mi)(mi)(mi)(mi)(mi)。尾水(shui)(shui)(shui)(shui)渠長(chang)(chang)240米(mi)(mi)(mi)(mi)(mi)(mi)(mi)(mi)(mi)(mi),寬(kuan)(kuan)30米(mi)(mi)(mi)(mi)(mi)(mi)(mi)(mi)(mi)(mi),最(zui)(zui)大(da)泄(xie)洪(hong)流量(liang)為1008立方(fang)米(mi)(mi)(mi)(mi)(mi)(mi)(mi)(mi)(mi)(mi)每秒(miao)。輸(shu)水(shui)(shui)(shui)(shui)隧洞(dong)(dong)1孔,位于(yu)(yu)(yu)主(zhu)壩(ba)(ba)(ba)(ba)(ba)左岸(an),用于(yu)(yu)(yu)灌溉、發電(dian)(dian)(dian)和水(shui)(shui)(shui)(shui)庫(ku)(ku)放空等,洞(dong)(dong)身長(chang)(chang)226.60米(mi)(mi)(mi)(mi)(mi)(mi)(mi)(mi)(mi)(mi),洞(dong)(dong)內直徑2米(mi)(mi)(mi)(mi)(mi)(mi)(mi)(mi)(mi)(mi),鋼筋(jin)混凝土結構。進(jin)水(shui)(shui)(shui)(shui)口(kou)底高程(cheng)(cheng)155.5米(mi)(mi)(mi)(mi)(mi)(mi)(mi)(mi)(mi)(mi),輸(shu)水(shui)(shui)(shui)(shui)流量(liang)12立方(fang)米(mi)(mi)(mi)(mi)(mi)(mi)(mi)(mi)(mi)(mi)每秒(miao)。水(shui)(shui)(shui)(shui)庫(ku)(ku)建(jian)(jian)(jian)有梯級電(dian)(dian)(dian)站(zhan)2座,總(zong)裝(zhuang)機(ji)(ji)(ji)容(rong)量(liang)5350千瓦(wa)。其中,小(xiao)峰水(shui)(shui)(shui)(shui)電(dian)(dian)(dian)站(zhan)(一級站(zhan))位于(yu)(yu)(yu)小(xiao)峰水(shui)(shui)(shui)(shui)庫(ku)(ku)大(da)壩(ba)(ba)(ba)(ba)(ba)下游(you)左岸(an),1978年(nian)興建(jian)(jian)(jian),1982年(nian)投(tou)入運(yun)行。裝(zhuang)機(ji)(ji)(ji)2臺、單機(ji)(ji)(ji)容(rong)量(liang)800千瓦(wa);江口(kou)水(shui)(shui)(shui)(shui)電(dian)(dian)(dian)站(zhan)(二級站(zhan))位于(yu)(yu)(yu)扶隆鄉南江村,1982年(nian)興建(jian)(jian)(jian),1985年(nian)建(jian)(jian)(jian)成(cheng)(cheng),是利用小(xiao)峰電(dian)(dian)(dian)站(zhan)的(de)尾水(shui)(shui)(shui)(shui)通過9.35公里(li)長(chang)(chang)的(de)沿山渠道(dao)作為水(shui)(shui)(shui)(shui)源,設(she)計(ji)(ji)引水(shui)(shui)(shui)(shui)流量(liang)6立方(fang)米(mi)(mi)(mi)(mi)(mi)(mi)(mi)(mi)(mi)(mi)每秒(miao),設(she)計(ji)(ji)水(shui)(shui)(shui)(shui)頭(tou)落差74.84米(mi)(mi)(mi)(mi)(mi)(mi)(mi)(mi)(mi)(mi)。裝(zhuang)機(ji)(ji)(ji)3臺、單機(ji)(ji)(ji)容(rong)量(liang)1250千瓦(wa), 2、3號機(ji)(ji)(ji)組(zu)于(yu)(yu)(yu)1985年(nian)安(an)裝(zhuang)投(tou)入運(yun)行;1號機(ji)(ji)(ji)組(zu)于(yu)(yu)(yu)1987年(nian)安(an)裝(zhuang)發電(dian)(dian)(dian)。
小峰水庫(ku)建成后運行(xing)初期(qi),由于(yu)受經(jing)濟和技術條(tiao)件(jian)的限制,工程建設標準低,工程存在著質量較差(cha)、病險隱患多等工程安(an)全問題,被(bei)迫降低水位進行(xing)運行(xing)。為了確保人(ren)民(min)生(sheng)命財產安(an)全,發揮水庫(ku)最大效益,自1992年開始,按設計(ji)要求對(dui)水庫(ku)主體工程已(yi)進行(xing)2次全面除險加(jia)固(gu),累(lei)計(ji)投入(ru)除險加(jia)固(gu)資金(jin)6230萬元。 ? ? ? ? ? ? ? ?
第一次除險加(jia)固工(gong)(gong)程(cheng)(cheng)于1992年(nian)動工(gong)(gong),1999年(nian)完工(gong)(gong)。工(gong)(gong)程(cheng)(cheng)項(xiang)目主要是加(jia)固主壩(ba)基(ji)(ji)礎、溢(yi)洪道出口段及修(xiu)建進庫公路(lu),投(tou)資(zi)1853.00萬元;第二次除險加(jia)固工(gong)(gong)程(cheng)(cheng)于2002年(nian)動工(gong)(gong),2004年(nian)1月完工(gong)(gong),工(gong)(gong)程(cheng)(cheng)主要項(xiang)目有主壩(ba)副(fu)壩(ba)壩(ba)體防(fang)(fang)滲(shen),主壩(ba)右(you)壩(ba)肩培(pei)厚,大(da)壩(ba)安全(quan)監測,溢(yi)洪道、主壩(ba)副(fu)壩(ba)壩(ba)體加(jia)固,副(fu)壩(ba)防(fang)(fang)汛道路(lu)建設等工(gong)(gong)程(cheng)(cheng),完成投(tou)資(zi)4252.00萬元。經過2次維修(xiu)加(jia)固后(hou),已基(ji)(ji)本消除工(gong)(gong)程(cheng)(cheng)隱(yin)患,大(da)大(da)提高(gao)了水庫的防(fang)(fang)汛能力和蓄水能力。
小峰水庫建成后,發揮了水庫防洪(hong)、供水、灌溉和發電等多方面的(de)(de)作(zuo)用,具有顯著的(de)(de)經濟(ji)效益和社會效益。
洪方面。汛前騰空水庫(ku),預留(liu)防(fang)洪庫(ku)容,發(fa)揮水庫(ku)蓄洪、調(diao)節洪峰的功能,提高水庫(ku)下游防(fang)城江沿岸鄉鎮(zhen)的防(fang)洪能力,把(ba)洪澇災害損失(shi)降到最低(di)限度。
供水(shui)灌溉方(fang)面。由(you)于防(fang)城(cheng)江來水(shui)豐枯(ku)不均,且(qie)相差懸殊,利(li)用水(shui)庫(ku)蓄水(shui)每年可增加7820萬(wan)立方(fang)米(mi)的調節(jie)水(shui)量,以(yi)豐補(bu)枯(ku)進行調節(jie),大大提高了防(fang)城(cheng)港市(shi)城(cheng)區(qu)工(gong)業和(he)生活用水(shui)的供水(shui)能力(li);同時,可以(yi)擴大和(he)改善農田灌溉面積(ji)18.38萬(wan)畝。
發(fa)(fa)電(dian)方面。已建成梯級水電(dian)站小(xiao)峰(feng)水電(dian)站和江口水電(dian)站2座,總裝機容量5350千瓦,年均發(fa)(fa)電(dian)量2116萬(wan)千瓦小(xiao)時,水庫為多年調節水庫,水電(dian)站可(ke)承擔防城電(dian)網的(de)部分調峰(feng)任務,緩(huan)解電(dian)網峰(feng)谷矛(mao)盾和電(dian)力供需矛(mao)盾,為促進地方經濟發(fa)(fa)展發(fa)(fa)揮了積極作(zuo)用。