陜西省(sheng)延安市南溝門水(shui)利樞(shu)紐(niu)工程由蘆(lu)河南溝水(shui)庫樞(shu)紐(niu)、洛河引洛入(ru)葫工程兩部分(fen)組成,其中引洛入(ru)葫工程包括(kuo)馬(ma)家河低壩引水(shui)樞(shu)紐(niu)和輸水(shui)隧(sui)洞。
地理位置
南(nan)溝(gou)門水(shui)利(li)樞紐工程位于陜(shan)西省(sheng)延安(an)市黃陵(ling)縣境內,水(shui)庫壩(ba)址位于葫蘆河河口上游3公(gong)里(li)處(chu)的南(nan)溝(gou)門附近(jin),距黃陵(ling)城(cheng)約(yue)(yue)25公(gong)里(li),距洛川縣城(cheng)約(yue)(yue)17公(gong)里(li),距延安(an)市約(yue)(yue)120公(gong)里(li),距西安(an)市約(yue)(yue)180 公(gong)里(li)。
等級
南(nan)溝(gou)門水(shui)庫(ku)樞(shu)紐(niu)總庫(ku)容(rong)2.006億立方米,為Ⅱ等(deng)、大(da)(2)型(xing)工(gong)程,樞(shu)紐(niu)主要建(jian)(jian)筑(zhu)(zhu)(zhu)物(wu)(wu)由攔(lan)河壩(ba)(ba)、導(dao)流泄洪(hong)(hong)洞(dong)(dong)、溢洪(hong)(hong)道、引(yin)水(shui)發(fa)電洞(dong)(dong)、壩(ba)(ba)后電站等(deng)五部分(fen)組成(cheng)。其中(zhong)大(da)壩(ba)(ba)、導(dao)流泄洪(hong)(hong)洞(dong)(dong)、溢洪(hong)(hong)道為2級建(jian)(jian)筑(zhu)(zhu)(zhu)物(wu)(wu);引(yin)水(shui)發(fa)電洞(dong)(dong)電因供(gong)水(shui)對象的重要性也(ye)定為2級建(jian)(jian)筑(zhu)(zhu)(zhu)物(wu)(wu),壩(ba)(ba)后電站屬5級建(jian)(jian)筑(zhu)(zhu)(zhu)物(wu)(wu)。
南(nan)溝門水庫攔(lan)河壩(ba)(ba)(ba)采用均質土壩(ba)(ba)(ba),大(da)(da)壩(ba)(ba)(ba)壩(ba)(ba)(ba)頂(ding)(ding)高(gao)(gao)(gao)(gao)程(cheng)(cheng)(cheng)為(wei)852.0米(mi)(mi)(mi),大(da)(da)壩(ba)(ba)(ba)的(de)壩(ba)(ba)(ba)頂(ding)(ding)寬(kuan)(kuan)度(du)為(wei)10米(mi)(mi)(mi),壩(ba)(ba)(ba)頂(ding)(ding)上(shang)(shang)(shang)游側設(she)置1.2米(mi)(mi)(mi)高(gao)(gao)(gao)(gao)的(de)混凝(ning)土防浪墻,墻頂(ding)(ding)高(gao)(gao)(gao)(gao)程(cheng)(cheng)(cheng)852.2米(mi)(mi)(mi),大(da)(da)壩(ba)(ba)(ba)最低點開挖高(gao)(gao)(gao)(gao)程(cheng)(cheng)(cheng)為(wei)789.0米(mi)(mi)(mi),最大(da)(da)壩(ba)(ba)(ba)頂(ding)(ding)高(gao)(gao)(gao)(gao)63.0米(mi)(mi)(mi),壩(ba)(ba)(ba)頂(ding)(ding)總長504.43米(mi)(mi)(mi);壩(ba)(ba)(ba)體上(shang)(shang)(shang)游坡(po)(po)為(wei)1:2.75和(he)1:3,在(zai)高(gao)(gao)(gao)(gao)程(cheng)(cheng)(cheng)830米(mi)(mi)(mi)處(chu)設(she)寬(kuan)(kuan)3.0米(mi)(mi)(mi)馬道(dao);下(xia)(xia)游壩(ba)(ba)(ba)坡(po)(po)為(wei)1:2.5,在(zai)高(gao)(gao)(gao)(gao)程(cheng)(cheng)(cheng)835 米(mi)(mi)(mi)和(he)818 米(mi)(mi)(mi)處(chu)設(she)寬(kuan)(kuan)2.0 米(mi)(mi)(mi)的(de)馬道(dao),在(zai)800.5 米(mi)(mi)(mi)處(chu)設(she)棱體排水平臺,最大(da)(da)壩(ba)(ba)(ba)底(di)寬(kuan)(kuan)為(wei)351 米(mi)(mi)(mi)。壩(ba)(ba)(ba)體上(shang)(shang)(shang)游壩(ba)(ba)(ba)坡(po)(po)在(zai)高(gao)(gao)(gao)(gao)程(cheng)(cheng)(cheng)812.5 米(mi)(mi)(mi)以上(shang)(shang)(shang)采用厚0.4 米(mi)(mi)(mi)的(de)干(gan)砌石(shi)護坡(po)(po),下(xia)(xia)游壩(ba)(ba)(ba)坡(po)(po)采用漿砌石(shi)網(wang)格內(nei)植草皮護坡(po)(po)。
設計施工
南(nan)溝門水利(li)樞紐導(dao)流(liu)建筑(zhu)物按4級設(she)計,圍堰(yan)(yan)導(dao)流(liu)標準按20年一(yi)遇洪水考慮。設(she)計采用(yong)河(he)道一(yi)次斷(duan)流(liu)、圍堰(yan)(yan)擋(dang)水、隧洞(dong)(dong)過流(liu)的(de)(de)導(dao)流(liu)方(fang)式。導(dao)流(liu)洞(dong)(dong)布(bu)(bu)置在右(you)岸,施(shi)工(gong)(gong)期作(zuo)為(wei)導(dao)流(liu)洞(dong)(dong)使用(yong),工(gong)(gong)程(cheng)運(yun)用(yong)期經過改建作(zuo)為(wei)匯洪洞(dong)(dong),屬(shu)永臨結合的(de)(de)建筑(zhu)物。導(dao)流(liu)隧洞(dong)(dong)全長(chang)795米(mi)(mi)(mi)(mi)(mi)(mi),進口高(gao)(gao)程(cheng)803.00米(mi)(mi)(mi)(mi)(mi)(mi),出口高(gao)(gao)程(cheng)795.05米(mi)(mi)(mi)(mi)(mi)(mi),隧洞(dong)(dong)斷(duan)面型(xing)式為(wei)圓(yuan)拱直(zhi)墻型(xing),斷(duan)面尺寸6×8米(mi)(mi)(mi)(mi)(mi)(mi)。設(she)計方(fang)案中,圍堰(yan)(yan)經土石方(fang)平衡計算采用(yong)土石圍堰(yan)(yan)。設(she)計的(de)(de)上游(you)(you)圍堰(yan)(yan)頂高(gao)(gao)813.50米(mi)(mi)(mi)(mi)(mi)(mi),頂寬6.0米(mi)(mi)(mi)(mi)(mi)(mi),堰(yan)(yan)頂總長(chang)236.0米(mi)(mi)(mi)(mi)(mi)(mi),最大堰(yan)(yan)高(gao)(gao)21.5米(mi)(mi)(mi)(mi)(mi)(mi)。下游(you)(you)圍堰(yan)(yan)布(bu)(bu)置于導(dao)流(liu)洞(dong)(dong)出口上游(you)(you)約(yue)800米(mi)(mi)(mi)(mi)(mi)(mi),最大堰(yan)(yan)高(gao)(gao)5.5米(mi)(mi)(mi)(mi)(mi)(mi),圍堰(yan)(yan)頂寬6.0 米(mi)(mi)(mi)(mi)(mi)(mi),堰(yan)(yan)頂總長(chang)62米(mi)(mi)(mi)(mi)(mi)(mi)。設(she)計方(fang)案中將施(shi)工(gong)(gong)管理區(qu)和生產福利(li)區(qu)布(bu)(bu)置在壩軸線(xian)下游(you)(you)600 米(mi)(mi)(mi)(mi)(mi)(mi)至800米(mi)(mi)(mi)(mi)(mi)(mi)的(de)(de)葫(hu)蘆(lu)河(he)右(you)岸,沿(yan)葫(hu)蘆(lu)河(he)布(bu)(bu)置;成品料(liao)堆料(liao)場、砼拌合系統、機械(xie)修(xiu)配廠及倉庫(ku)儲運(yun)等系統布(bu)(bu)置在壩軸線(xian)下游(you)(you)泄洪洞(dong)(dong)出口附(fu)近的(de)(de)河(he)岸灘地上,沿(yan)葫(hu)蘆(lu)河(he)兩岸布(bu)(bu)置。在溢洪道進口附(fu)近布(bu)(bu)設(she)輔(fu)助生產企業,以滿足溢洪道的(de)(de)施(shi)工(gong)(gong)要(yao)求。
南(nan)溝門(men)水(shui)庫的棄(qi)渣(zha)(zha)場位于(yu)大壩(ba)(ba)(ba)下游的南(nan)溝內,共布置有(you)Ⅰ、Ⅱ兩個棄(qi)渣(zha)(zha)壩(ba)(ba)(ba),棄(qi)渣(zha)(zha)壩(ba)(ba)(ba)壩(ba)(ba)(ba)型為碾(nian)壓(ya)土石壩(ba)(ba)(ba),攔(lan)渣(zha)(zha)壩(ba)(ba)(ba)設計防洪標準(zhun)取用30年,根(gen)據棄(qi)渣(zha)(zha)高度和搓渣(zha)(zha)庫容,Ⅰ棄(qi)渣(zha)(zha)壩(ba)(ba)(ba)高度為15.0米,Ⅱ棄(qi)渣(zha)(zha)壩(ba)(ba)(ba)高度為18.50米,壩(ba)(ba)(ba)頂寬度均為3米,上游坡率1:2.2,下游坡率1:2.0。
南溝門水利(li)樞紐工程(cheng)總工期約為44個(ge)月(yue),計劃于2014年(nian)6月(yue)完(wan)工。