山口巖水利(li)樞(shu)紐工(gong)程地處(chu)贛江一級支流袁河上游蘆溪縣境(jing)內,壩址(zhi)位于蘆溪縣上埠鎮山口巖村上游約1公里(li)處(chu),距蘆溪縣城7.6公里(li),距萍鄉(xiang)市約30公里(li),是一座以供(gong)水、防洪為主(zhu),兼顧(gu)發(fa)電、灌溉等綜合利(li)用(yong)的大型水利(li)樞(shu)紐工(gong)程。
工程規模
山口(kou)巖水(shui)(shui)(shui)(shui)利(li)樞紐(niu)工程(cheng)(cheng)主(zhu)要建(jian)筑物為(wei):大(da)(da)(da)壩(ba)(ba)、溢洪道、放空洞(dong)(dong)、供(gong)水(shui)(shui)(shui)(shui)兼發(fa)電及灌(guan)溉進水(shui)(shui)(shui)(shui)口(kou)、引(yin)水(shui)(shui)(shui)(shui)隧洞(dong)(dong)、發(fa)電廠(chang)(chang)房(fang)、供(gong)水(shui)(shui)(shui)(shui)管線(xian)(xian)等。大(da)(da)(da)壩(ba)(ba)為(wei)碾(nian)壓(ya)砼雙(shuang)曲拱(gong)壩(ba)(ba),壩(ba)(ba)頂高程(cheng)(cheng)247.6米(mi),最大(da)(da)(da)壩(ba)(ba)高99.1米(mi),壩(ba)(ba)底(di)最大(da)(da)(da)寬(kuan)度32米(mi),壩(ba)(ba)頂寬(kuan)5.0米(mi),壩(ba)(ba)頂長287.94米(mi),大(da)(da)(da)壩(ba)(ba)主(zhu)體采用R90200三級配(pei)碾(nian)壓(ya)混(hun)凝(ning)(ning)土(tu)。引(yin)水(shui)(shui)(shui)(shui)建(jian)筑物包括(kuo)進水(shui)(shui)(shui)(shui)口(kou)及引(yin)水(shui)(shui)(shui)(shui)隧洞(dong)(dong),布置(zhi)在大(da)(da)(da)壩(ba)(ba)左岸。進水(shui)(shui)(shui)(shui)口(kou)為(wei)岸塔式結(jie)構,根據城市供(gong)水(shui)(shui)(shui)(shui)及灌(guan)溉供(gong)水(shui)(shui)(shui)(shui)要求,采用分層取(qu)水(shui)(shui)(shui)(shui)方(fang)式,取(qu)水(shui)(shui)(shui)(shui)口(kou)共(gong)分四層,取(qu)水(shui)(shui)(shui)(shui)孔口(kou)尺寸均(jun)(jun)為(wei)3×10米(mi)(寬(kuan)×高),引(yin)水(shui)(shui)(shui)(shui)隧洞(dong)(dong)洞(dong)(dong)徑3.0米(mi),全長378.65米(mi)。發(fa)電廠(chang)(chang)房(fang)為(wei)引(yin)水(shui)(shui)(shui)(shui)式地面(mian)廠(chang)(chang)房(fang),布置(zhi)于大(da)(da)(da)壩(ba)(ba)下游河道約220米(mi)處(chu)。安裝兩臺(tai)單機(ji)(ji)容量為(wei)6000千(qian)瓦的水(shui)(shui)(shui)(shui)輪發(fa)電機(ji)(ji)組(zu),多年平均(jun)(jun)發(fa)電量2912萬度。山口(kou)巖供(gong)水(shui)(shui)(shui)(shui)工程(cheng)(cheng)供(gong)水(shui)(shui)(shui)(shui)干管線(xian)(xian)總長11.4公里,支管線(xian)(xian)長3.24公里,水(shui)(shui)(shui)(shui)從發(fa)電引(yin)水(shui)(shui)(shui)(shui)隧洞(dong)(dong)引(yin)出后進入混(hun)凝(ning)(ning)土(tu)預(yu)應力供(gong)水(shui)(shui)(shui)(shui)干管(D=1.6米(mi)),過農田(tian)沿320國道至白(bai)源水(shui)(shui)(shui)(shui)廠(chang)(chang)。
建設意義
建設山口巖水(shui)(shui)利(li)樞(shu)紐(niu)工(gong)(gong)程是(shi)(shi)萍(ping)(ping)鄉(xiang)市開源(yuan)(yuan)(yuan)的(de)(de)重(zhong)大舉(ju)措,是(shi)(shi)該(gai)市最大的(de)(de)城(cheng)市供水(shui)(shui)水(shui)(shui)源(yuan)(yuan)(yuan)工(gong)(gong)程和民生工(gong)(gong)程。因為萍(ping)(ping)鄉(xiang)市地處(chu)贛西(xi)(xi)湘江流(liu)域和贛江流(liu)域分(fen)水(shui)(shui)嶺,是(shi)(shi)江西(xi)(xi)省(sheng)重(zhong)要工(gong)(gong)業城(cheng)市,城(cheng)市用水(shui)(shui)需(xu)求大,境(jing)內無大的(de)(de)河流(liu),全(quan)市人均水(shui)(shui)資(zi)源(yuan)(yuan)(yuan)擁有(you)量不足2000立方米,低于全(quan)省(sheng)和全(quan)國人均水(shui)(shui)平(ping);資(zi)源(yuan)(yuan)(yuan)型、工(gong)(gong)程型、水(shui)(shui)質型缺水(shui)(shui)并存(cun),嚴重(zhong)制約(yue)了該(gai)市經濟社會可持續發展。萍(ping)(ping)鄉(xiang)市把(ba)解決水(shui)(shui)資(zi)源(yuan)(yuan)(yuan)問(wen)題的(de)(de)出路(lu)放(fang)在節(jie)流(liu)和開源(yuan)(yuan)(yuan)上,建設山口巖水(shui)(shui)利(li)樞(shu)紐(niu)工(gong)(gong)程是(shi)(shi)萍(ping)(ping)鄉(xiang)市開源(yuan)(yuan)(yuan)的(de)(de)重(zhong)大舉(ju)措。
水庫(ku)建成后,可(ke)(ke)使下(xia)游(you)蘆溪縣(xian)城的(de)(de)(de)防洪(hong)能力(li)從現在的(de)(de)(de)不足5年一(yi)遇提(ti)高到20年一(yi)遇,可(ke)(ke)改善下(xia)游(you)10.12萬畝農田的(de)(de)(de)灌溉,將灌溉保證率(lv)提(ti)高到90%,促(cu)進蘆溪縣(xian)農業經(jing)濟持續(xu)穩定發(fa)展;每年可(ke)(ke)為萍鄉(xiang)市城區(qu)及(ji)蘆溪縣(xian)城提(ti)供(gong)優質原(yuan)水7300萬方,有效緩解(jie)萍鄉(xiang)市城區(qu)及(ji)蘆溪縣(xian)城生(sheng)活、工(gong)業用水的(de)(de)(de)緊張狀(zhuang)況;可(ke)(ke)在蘆溪縣(xian)電力(li)系(xi)統(tong)內承擔調峰(feng)任務,為蘆溪縣(xian)電力(li)系(xi)統(tong)提(ti)供(gong)年電量2912萬度。工(gong)程建設進度
2007年(nian)(nian)11月開工(gong)(gong)典禮隆重舉行,2008年(nian)(nian)8月水(shui)庫大壩成功截流,2009年(nian)(nian)9月金(jin)屬(shu)結(jie)構(gou)安(an)裝開工(gong)(gong),2010年(nian)(nian)2月進水(shui)口處(chu)閘室完建,2011年(nian)(nian)9月部分工(gong)(gong)程通過驗收,2012年(nian)(nian)6月水(shui)庫正式下閘蓄(xu)水(shui)。