陜西省延安市南(nan)溝門水(shui)利樞(shu)紐工程由蘆河南(nan)溝水(shui)庫樞(shu)紐、洛(luo)(luo)河引(yin)(yin)洛(luo)(luo)入葫(hu)工程兩(liang)部分(fen)組成(cheng),其中引(yin)(yin)洛(luo)(luo)入葫(hu)工程包(bao)括(kuo)馬家河低壩引(yin)(yin)水(shui)樞(shu)紐和輸水(shui)隧洞。
地理位置
南(nan)溝門水(shui)(shui)利樞紐工程(cheng)位(wei)于陜西(xi)省延安(an)市(shi)(shi)黃陵縣(xian)境內(nei),水(shui)(shui)庫(ku)壩址位(wei)于葫蘆河(he)河(he)口上游3公里處的南(nan)溝門附近,距(ju)黃陵城約(yue)(yue)25公里,距(ju)洛川(chuan)縣(xian)城約(yue)(yue)17公里,距(ju)延安(an)市(shi)(shi)約(yue)(yue)120公里,距(ju)西(xi)安(an)市(shi)(shi)約(yue)(yue)180 公里。
等級
南溝門水庫樞(shu)紐(niu)總庫容2.006億(yi)立方米,為Ⅱ等、大(2)型工(gong)程,樞(shu)紐(niu)主(zhu)要建(jian)筑(zhu)物(wu)由(you)攔河壩(ba)(ba)、導流泄洪(hong)(hong)洞、溢洪(hong)(hong)道、引水發電(dian)(dian)洞、壩(ba)(ba)后(hou)電(dian)(dian)站(zhan)等五部分(fen)組成。其中大壩(ba)(ba)、導流泄洪(hong)(hong)洞、溢洪(hong)(hong)道為2級建(jian)筑(zhu)物(wu);引水發電(dian)(dian)洞電(dian)(dian)因供水對象的(de)重要性也定為2級建(jian)筑(zhu)物(wu),壩(ba)(ba)后(hou)電(dian)(dian)站(zhan)屬5級建(jian)筑(zhu)物(wu)。
南溝(gou)門(men)水庫攔河壩(ba)(ba)(ba)(ba)(ba)(ba)采(cai)用均(jun)質土(tu)壩(ba)(ba)(ba)(ba)(ba)(ba),大(da)(da)(da)(da)壩(ba)(ba)(ba)(ba)(ba)(ba)壩(ba)(ba)(ba)(ba)(ba)(ba)頂(ding)(ding)高程(cheng)為(wei)852.0米(mi)(mi)(mi),大(da)(da)(da)(da)壩(ba)(ba)(ba)(ba)(ba)(ba)的壩(ba)(ba)(ba)(ba)(ba)(ba)頂(ding)(ding)寬(kuan)度為(wei)10米(mi)(mi)(mi),壩(ba)(ba)(ba)(ba)(ba)(ba)頂(ding)(ding)上(shang)(shang)游(you)側設置1.2米(mi)(mi)(mi)高的混凝(ning)土(tu)防浪墻(qiang),墻(qiang)頂(ding)(ding)高程(cheng)852.2米(mi)(mi)(mi),大(da)(da)(da)(da)壩(ba)(ba)(ba)(ba)(ba)(ba)最低(di)點開(kai)挖(wa)高程(cheng)為(wei)789.0米(mi)(mi)(mi),最大(da)(da)(da)(da)壩(ba)(ba)(ba)(ba)(ba)(ba)頂(ding)(ding)高63.0米(mi)(mi)(mi),壩(ba)(ba)(ba)(ba)(ba)(ba)頂(ding)(ding)總長504.43米(mi)(mi)(mi);壩(ba)(ba)(ba)(ba)(ba)(ba)體(ti)上(shang)(shang)游(you)坡(po)為(wei)1:2.75和1:3,在高程(cheng)830米(mi)(mi)(mi)處設寬(kuan)3.0米(mi)(mi)(mi)馬(ma)(ma)道(dao);下游(you)壩(ba)(ba)(ba)(ba)(ba)(ba)坡(po)為(wei)1:2.5,在高程(cheng)835 米(mi)(mi)(mi)和818 米(mi)(mi)(mi)處設寬(kuan)2.0 米(mi)(mi)(mi)的馬(ma)(ma)道(dao),在800.5 米(mi)(mi)(mi)處設棱體(ti)排水平臺,最大(da)(da)(da)(da)壩(ba)(ba)(ba)(ba)(ba)(ba)底寬(kuan)為(wei)351 米(mi)(mi)(mi)。壩(ba)(ba)(ba)(ba)(ba)(ba)體(ti)上(shang)(shang)游(you)壩(ba)(ba)(ba)(ba)(ba)(ba)坡(po)在高程(cheng)812.5 米(mi)(mi)(mi)以(yi)上(shang)(shang)采(cai)用厚0.4 米(mi)(mi)(mi)的干砌石(shi)護坡(po),下游(you)壩(ba)(ba)(ba)(ba)(ba)(ba)坡(po)采(cai)用漿砌石(shi)網格內植草皮護坡(po)。
設計施工
南溝門水(shui)利樞紐導(dao)(dao)流(liu)建筑物按4級設(she)計(ji),圍(wei)(wei)(wei)堰(yan)(yan)導(dao)(dao)流(liu)標準按20年一遇洪(hong)(hong)水(shui)考(kao)慮。設(she)計(ji)采(cai)用(yong)(yong)河(he)道(dao)(dao)一次斷流(liu)、圍(wei)(wei)(wei)堰(yan)(yan)擋水(shui)、隧(sui)洞(dong)過(guo)流(liu)的(de)導(dao)(dao)流(liu)方(fang)式(shi)。導(dao)(dao)流(liu)洞(dong)布(bu)置(zhi)(zhi)(zhi)在(zai)右(you)岸(an),施(shi)工(gong)期作(zuo)為導(dao)(dao)流(liu)洞(dong)使用(yong)(yong),工(gong)程(cheng)(cheng)運用(yong)(yong)期經(jing)過(guo)改建作(zuo)為匯(hui)洪(hong)(hong)洞(dong),屬永臨結(jie)合(he)的(de)建筑物。導(dao)(dao)流(liu)隧(sui)洞(dong)全(quan)長(chang)(chang)795米(mi)(mi)(mi)(mi),進口(kou)高(gao)(gao)程(cheng)(cheng)803.00米(mi)(mi)(mi)(mi),出口(kou)高(gao)(gao)程(cheng)(cheng)795.05米(mi)(mi)(mi)(mi),隧(sui)洞(dong)斷面型(xing)(xing)式(shi)為圓拱直墻(qiang)型(xing)(xing),斷面尺(chi)寸6×8米(mi)(mi)(mi)(mi)。設(she)計(ji)方(fang)案中,圍(wei)(wei)(wei)堰(yan)(yan)經(jing)土石方(fang)平衡計(ji)算采(cai)用(yong)(yong)土石圍(wei)(wei)(wei)堰(yan)(yan)。設(she)計(ji)的(de)上游(you)圍(wei)(wei)(wei)堰(yan)(yan)頂(ding)高(gao)(gao)813.50米(mi)(mi)(mi)(mi),頂(ding)寬6.0米(mi)(mi)(mi)(mi),堰(yan)(yan)頂(ding)總長(chang)(chang)236.0米(mi)(mi)(mi)(mi),最大(da)堰(yan)(yan)高(gao)(gao)21.5米(mi)(mi)(mi)(mi)。下游(you)圍(wei)(wei)(wei)堰(yan)(yan)布(bu)置(zhi)(zhi)(zhi)于導(dao)(dao)流(liu)洞(dong)出口(kou)上游(you)約800米(mi)(mi)(mi)(mi),最大(da)堰(yan)(yan)高(gao)(gao)5.5米(mi)(mi)(mi)(mi),圍(wei)(wei)(wei)堰(yan)(yan)頂(ding)寬6.0 米(mi)(mi)(mi)(mi),堰(yan)(yan)頂(ding)總長(chang)(chang)62米(mi)(mi)(mi)(mi)。設(she)計(ji)方(fang)案中將(jiang)施(shi)工(gong)管理區和生產福利區布(bu)置(zhi)(zhi)(zhi)在(zai)壩軸線(xian)下游(you)600 米(mi)(mi)(mi)(mi)至800米(mi)(mi)(mi)(mi)的(de)葫(hu)蘆(lu)河(he)右(you)岸(an),沿葫(hu)蘆(lu)河(he)布(bu)置(zhi)(zhi)(zhi);成品(pin)料堆料場、砼拌合(he)系統、機械修配(pei)廠及倉庫(ku)儲運等系統布(bu)置(zhi)(zhi)(zhi)在(zai)壩軸線(xian)下游(you)泄洪(hong)(hong)洞(dong)出口(kou)附近的(de)河(he)岸(an)灘(tan)地上,沿葫(hu)蘆(lu)河(he)兩岸(an)布(bu)置(zhi)(zhi)(zhi)。在(zai)溢洪(hong)(hong)道(dao)(dao)進口(kou)附近布(bu)設(she)輔(fu)助(zhu)生產企業,以滿足溢洪(hong)(hong)道(dao)(dao)的(de)施(shi)工(gong)要求。
南(nan)(nan)溝門水庫的(de)(de)棄(qi)(qi)渣(zha)(zha)場位于大壩(ba)下游的(de)(de)南(nan)(nan)溝內,共布置有Ⅰ、Ⅱ兩個棄(qi)(qi)渣(zha)(zha)壩(ba),棄(qi)(qi)渣(zha)(zha)壩(ba)壩(ba)型為碾壓土石壩(ba),攔渣(zha)(zha)壩(ba)設計(ji)防洪標準(zhun)取用30年,根據棄(qi)(qi)渣(zha)(zha)高度(du)(du)和搓(cuo)渣(zha)(zha)庫容,Ⅰ棄(qi)(qi)渣(zha)(zha)壩(ba)高度(du)(du)為15.0米,Ⅱ棄(qi)(qi)渣(zha)(zha)壩(ba)高度(du)(du)為18.50米,壩(ba)頂寬度(du)(du)均為3米,上游坡率1:2.2,下游坡率1:2.0。
南(nan)溝門水利樞紐(niu)工程總工期約為44個月,計劃于2014年6月完工。