山口巖水(shui)(shui)利樞紐工程(cheng)(cheng)地處贛江一(yi)級支流袁河(he)上游蘆(lu)溪縣境內,壩址位于蘆(lu)溪縣上埠鎮山口巖村(cun)上游約1公里處,距(ju)(ju)蘆(lu)溪縣城7.6公里,距(ju)(ju)萍鄉市(shi)約30公里,是一(yi)座以供水(shui)(shui)、防洪為主(zhu),兼顧(gu)發電(dian)、灌溉等綜合(he)利用的大型水(shui)(shui)利樞紐工程(cheng)(cheng)。
工程規模
山口(kou)巖(yan)水(shui)(shui)(shui)(shui)利樞紐工(gong)程主要建(jian)筑物(wu)為(wei)(wei):大(da)壩(ba)、溢洪道、放(fang)空洞、供(gong)水(shui)(shui)(shui)(shui)兼發(fa)(fa)電(dian)及灌(guan)溉(gai)進(jin)(jin)(jin)水(shui)(shui)(shui)(shui)口(kou)、引(yin)(yin)水(shui)(shui)(shui)(shui)隧(sui)(sui)洞、發(fa)(fa)電(dian)廠(chang)房、供(gong)水(shui)(shui)(shui)(shui)管(guan)線等(deng)。大(da)壩(ba)為(wei)(wei)碾壓(ya)砼(tong)雙曲拱壩(ba),壩(ba)頂(ding)高程247.6米,最(zui)大(da)壩(ba)高99.1米,壩(ba)底最(zui)大(da)寬度(du)32米,壩(ba)頂(ding)寬5.0米,壩(ba)頂(ding)長287.94米,大(da)壩(ba)主體(ti)采(cai)用(yong)R90200三級配碾壓(ya)混凝(ning)土(tu)。引(yin)(yin)水(shui)(shui)(shui)(shui)建(jian)筑物(wu)包括進(jin)(jin)(jin)水(shui)(shui)(shui)(shui)口(kou)及引(yin)(yin)水(shui)(shui)(shui)(shui)隧(sui)(sui)洞,布置(zhi)在大(da)壩(ba)左岸。進(jin)(jin)(jin)水(shui)(shui)(shui)(shui)口(kou)為(wei)(wei)岸塔式(shi)結(jie)構,根據(ju)城市供(gong)水(shui)(shui)(shui)(shui)及灌(guan)溉(gai)供(gong)水(shui)(shui)(shui)(shui)要求,采(cai)用(yong)分層取水(shui)(shui)(shui)(shui)方式(shi),取水(shui)(shui)(shui)(shui)口(kou)共分四層,取水(shui)(shui)(shui)(shui)孔(kong)口(kou)尺寸均(jun)為(wei)(wei)3×10米(寬×高),引(yin)(yin)水(shui)(shui)(shui)(shui)隧(sui)(sui)洞洞徑3.0米,全長378.65米。發(fa)(fa)電(dian)廠(chang)房為(wei)(wei)引(yin)(yin)水(shui)(shui)(shui)(shui)式(shi)地面廠(chang)房,布置(zhi)于大(da)壩(ba)下游河道約220米處(chu)。安裝兩(liang)臺單機容量為(wei)(wei)6000千瓦的水(shui)(shui)(shui)(shui)輪發(fa)(fa)電(dian)機組,多年平均(jun)發(fa)(fa)電(dian)量2912萬度(du)。山口(kou)巖(yan)供(gong)水(shui)(shui)(shui)(shui)工(gong)程供(gong)水(shui)(shui)(shui)(shui)干(gan)管(guan)線總(zong)長11.4公(gong)里,支管(guan)線長3.24公(gong)里,水(shui)(shui)(shui)(shui)從(cong)發(fa)(fa)電(dian)引(yin)(yin)水(shui)(shui)(shui)(shui)隧(sui)(sui)洞引(yin)(yin)出后進(jin)(jin)(jin)入混凝(ning)土(tu)預應力(li)供(gong)水(shui)(shui)(shui)(shui)干(gan)管(guan)(D=1.6米),過(guo)農田沿320國道至白源(yuan)水(shui)(shui)(shui)(shui)廠(chang)。
建設意義
建(jian)設山口(kou)巖水(shui)(shui)(shui)利樞紐工程(cheng)是萍鄉(xiang)(xiang)市(shi)(shi)開(kai)源的(de)重(zhong)(zhong)大(da)舉措(cuo),是該市(shi)(shi)最大(da)的(de)城市(shi)(shi)供水(shui)(shui)(shui)水(shui)(shui)(shui)源工程(cheng)和(he)民生工程(cheng)。因為萍鄉(xiang)(xiang)市(shi)(shi)地(di)處贛西湘(xiang)江(jiang)流(liu)域(yu)和(he)贛江(jiang)流(liu)域(yu)分水(shui)(shui)(shui)嶺,是江(jiang)西省(sheng)重(zhong)(zhong)要(yao)工業城市(shi)(shi),城市(shi)(shi)用水(shui)(shui)(shui)需求大(da),境內無大(da)的(de)河流(liu),全市(shi)(shi)人均水(shui)(shui)(shui)資(zi)源擁有量不足2000立(li)方(fang)米,低于(yu)全省(sheng)和(he)全國人均水(shui)(shui)(shui)平;資(zi)源型(xing)、工程(cheng)型(xing)、水(shui)(shui)(shui)質型(xing)缺水(shui)(shui)(shui)并存(cun),嚴重(zhong)(zhong)制約了(le)該市(shi)(shi)經濟(ji)社會可持續發展。萍鄉(xiang)(xiang)市(shi)(shi)把解決水(shui)(shui)(shui)資(zi)源問題(ti)的(de)出路(lu)放(fang)在節(jie)流(liu)和(he)開(kai)源上,建(jian)設山口(kou)巖水(shui)(shui)(shui)利樞紐工程(cheng)是萍鄉(xiang)(xiang)市(shi)(shi)開(kai)源的(de)重(zhong)(zhong)大(da)舉措(cuo)。
水(shui)庫建成后,可使下游(you)蘆溪(xi)縣(xian)(xian)(xian)城(cheng)(cheng)的防洪能力從(cong)現在的不足5年一遇提高(gao)(gao)到20年一遇,可改善下游(you)10.12萬(wan)(wan)畝農田的灌(guan)溉,將(jiang)灌(guan)溉保證率提高(gao)(gao)到90%,促進蘆溪(xi)縣(xian)(xian)(xian)農業經濟持續(xu)穩定發展;每年可為萍鄉市(shi)城(cheng)(cheng)區(qu)及蘆溪(xi)縣(xian)(xian)(xian)城(cheng)(cheng)提供優質原水(shui)7300萬(wan)(wan)方(fang),有效緩解(jie)萍鄉市(shi)城(cheng)(cheng)區(qu)及蘆溪(xi)縣(xian)(xian)(xian)城(cheng)(cheng)生(sheng)活、工業用水(shui)的緊張狀況;可在蘆溪(xi)縣(xian)(xian)(xian)電力系(xi)統內(nei)承擔調峰任務,為蘆溪(xi)縣(xian)(xian)(xian)電力系(xi)統提供年電量2912萬(wan)(wan)度。工程建設進度
2007年(nian)11月(yue)(yue)開工典禮(li)隆重舉(ju)行,2008年(nian)8月(yue)(yue)水庫大壩成功截流,2009年(nian)9月(yue)(yue)金屬結(jie)構安裝開工,2010年(nian)2月(yue)(yue)進水口(kou)處閘室完(wan)建,2011年(nian)9月(yue)(yue)部分工程通過驗收,2012年(nian)6月(yue)(yue)水庫正式下閘蓄水。