工程概況
小浪底水利樞紐位于三門峽水利樞紐下游130公(gong)里(li)(li)、河(he)南省(sheng)洛陽市(shi)以北 40公(gong)里(li)(li)的黃河(he)干(gan)流(liu)上,控制流(liu)域(yu)面積69.4萬平(ping)方公(gong)里(li)(li),占黃河(he)流(liu)域(yu)面積的92.3%。壩址所在(zai)地南岸(an)為孟津縣(xian)小浪底村,北岸(an)為濟(ji)源市(shi)蓼塢村,是(shi)黃河(he)中游最(zui)后一段峽谷的出口。
小(xiao)浪(lang)底(di)水(shui)利樞紐壩頂高(gao)程(cheng)281m,正常高(gao)水(shui)位275m,庫(ku)(ku)容126.5億(yi)(yi)m3,淤沙庫(ku)(ku)容75.5億(yi)(yi)m3,調水(shui)調沙庫(ku)(ku)容10.5億(yi)(yi)立方米,長期(qi)有效庫(ku)(ku)容51億(yi)(yi)m3,千年一(yi)遇設計洪水(shui)蓄洪量38.2億(yi)(yi)m3,萬年一(yi)遇校核(he)洪水(shui)蓄洪量40.5億(yi)(yi)m3。死水(shui)位230m,汛期(qi)防洪限(xian)制水(shui)位254m,防凌限(xian)制水(shui)位266m。防洪最大泄量17000億(yi)(yi)m3/s,正常死水(shui)位泄量略大于(yu)8000m3/s。小(xiao)浪(lang)底(di)水(shui)庫(ku)(ku)正常蓄水(shui)位時淹沒影響(xiang)面積277.8km2,施工區占地(di)23.33km2,共涉及河南、山(shan)西(xi)兩省的濟源、孟津、新安(an)、澠池、陜縣、平陸、夏縣、垣曲(qu)8縣(市)33個鄉鎮,動(dong)遷(qian)年移(yi)民20萬人(ren)。 1991年9月(yue),小(xiao)浪(lang)底(di)水(shui)利樞紐工程(cheng)前期(qi)工程(cheng)開工。2009年4月(yue),全部(bu)工程(cheng)通過(guo)竣工驗收(shou),是國家“八五(wu)”重點建(jian)設項目。
工(gong)程(cheng)全部竣工(gong)后,水(shui)庫(ku)面積達272.3平方公(gong)里(li),控制(zhi)流(liu)(liu)域面積69.42萬(wan)平方公(gong)里(li);總(zong)裝機容量(liang)為(wei)180萬(wan)千瓦(wa),年(nian)(nian)(nian)平均發電量(liang)為(wei)51億千瓦(wa)時;每年(nian)(nian)(nian)可(ke)增(zeng)加(jia)40億立方米的(de)(de)供水(shui)量(liang)。小(xiao)浪底水(shui)庫(ku)兩岸(an)分別為(wei)秦嶺山(shan)(shan)系(xi)的(de)(de)崤山(shan)(shan)、韶山(shan)(shan)和邙山(shan)(shan);中(zhong)條(tiao)山(shan)(shan)系(xi)、太行山(shan)(shan)系(xi)的(de)(de)王屋山(shan)(shan)。它的(de)(de)建(jian)成將有效地控制(zhi)黃(huang)(huang)河(he)洪水(shui),可(ke)使(shi)黃(huang)(huang)河(he)下(xia)(xia)游花園口的(de)(de)防洪標(biao)準(zhun)由(you)六十(shi)年(nian)(nian)(nian)一遇(yu)提(ti)高到千年(nian)(nian)(nian)一遇(yu),基本解除黃(huang)(huang)河(he)下(xia)(xia)游凌汛的(de)(de)威(wei)脅,減緩下(xia)(xia)游河(he)道的(de)(de)淤積,小(xiao)浪底水(shui)庫(ku)還(huan)可(ke)以利用其長期有效庫(ku)容調(diao)節非汛期徑流(liu)(liu),增(zeng)加(jia)水(shui)量(liang)用于(yu)城市及(ji)工(gong)業供水(shui)、灌(guan)溉和發電。它處在(zai)承上啟下(xia)(xia)控制(zhi)下(xia)(xia)游水(shui)沙(sha)的(de)(de)關鍵部位,控制(zhi)黃(huang)(huang)河(he)輸沙(sha)量(liang)的(de)(de)100%,可(ke)滯(zhi)攔泥沙(sha)78億噸(dun),相當于(yu)20年(nian)(nian)(nian)下(xia)(xia)游河(he)床不淤積抬高。
1994年9月(yue)主體(ti)工(gong)程開工(gong),1997年10月(yue)28日實現(xian)大河(he)截流,1999年底第一臺機組發(fa)電(dian),2001年12月(yue)31日全部竣(jun)工(gong),總工(gong)期11年,壩址控制流域面積(ji)69.42萬平方公(gong)里(li),占黃河(he)流域面積(ji)的92.3%。水庫(ku)總庫(ku)容(rong)126.5億(yi)立方米(mi),長期有效庫(ku)容(rong)51億(yi)立方米(mi)。工(gong)程以防洪、減淤為主,兼顧供水、灌溉和發(fa)電(dian),蓄清(qing)排渾,除害興利,綜合(he)利用。
小浪(lang)底工程由攔河大(da)壩、泄洪建筑物(wu)和(he)引水(shui)發(fa)電系統組成(cheng)。小浪(lang)底工程攔河大(da)壩采用斜心(xin)墻(qiang)堆石壩,設計最大(da)壩高154米(mi)(mi),壩頂(ding)(ding)長(chang)度為1667米(mi)(mi),壩頂(ding)(ding)寬度15米(mi)(mi),壩底最大(da)寬度864米(mi)(mi)。壩體啟、填筑量5l.85萬立(li)(li)方米(mi)(mi)、基(ji)礎(chu)混(hun)凝土(tu)防(fang)滲墻(qiang)厚l.2米(mi)(mi)、深80米(mi)(mi)。其(qi)填筑量和(he)混(hun)凝土(tu)防(fang)滲墻(qiang)均(jun)為國內(nei)之最。壩頂(ding)(ding)高程281米(mi)(mi),水(shui)庫(ku)正常蓄水(shui)位275米(mi)(mi),庫(ku)水(shui)面積272平方公(gong)(gong)里(li),總庫(ku)容126.5億(yi)立(li)(li)方米(mi)(mi)。水(shui)庫(ku)呈東西(xi)帶(dai)狀,長(chang)約130公(gong)(gong)里(li),上(shang)段較(jiao)窄(zhai),下段較(jiao)寬,平均(jun)寬度2公(gong)(gong)里(li),屬峽(xia)谷河道(dao)型水(shui)庫(ku)。壩址處多(duo)年平均(jun)流量1327立(li)(li)方米(mi)(mi)/秒,輸沙量16億(yi)噸,該壩建成(cheng)后可(ke)控制全河流域面積的92.3%。
由(you)于地(di)形(xing)、地(di)質條(tiao)(tiao)(tiao)件的(de)限制和(he)(he)進(jin)水口(kou)(kou)(kou)(kou)防(fang)淤(yu)堵(du)等運用要(yao)求、泄(xie)(xie)洪(hong)、排(pai)(pai)沙(sha)、引(yin)水發(fa)(fa)電(dian)建(jian)筑物均布置(zhi)在左岸,形(xing)成(cheng)(cheng)進(jin)水口(kou)(kou)(kou)(kou)、洞(dong)(dong)室群、出(chu)(chu)水口(kou)(kou)(kou)(kou)消(xiao)力(li)塘(tang)集中(zhong)布置(zhi)的(de)特點。在面(mian)積約(yue)1k㎡的(de)單薄山體中(zhong)集中(zhong)布置(zhi)了各類洞(dong)(dong)室100多(duo)條(tiao)(tiao)(tiao)。9條(tiao)(tiao)(tiao)泄(xie)(xie)洪(hong)排(pai)(pai)水洞(dong)(dong)、6條(tiao)(tiao)(tiao)引(yin)水發(fa)(fa)電(dian)洞(dong)(dong)和(he)(he)1條(tiao)(tiao)(tiao)灌溉洞(dong)(dong)的(de)進(jin)水口(kou)(kou)(kou)(kou)組(zu)合成(cheng)(cheng)一字形(xing)排(pai)(pai)列的(de)10座進(jin)水塔(ta),其上(shang)游面(mian)在同一豎直面(mian)內(nei),前緣總寬(kuan)276.4m,最大(da)高(gao)度113m。各洞(dong)(dong)進(jin)口(kou)(kou)(kou)(kou)錯(cuo)開布置(zhi),形(xing)成(cheng)(cheng)高(gao)水泄(xie)(xie)洪(hong)排(pai)(pai)污,低(di)水泄(xie)(xie)洪(hong)排(pai)(pai)沙(sha)、中(zhong)間(jian)引(yin)水發(fa)(fa)電(dian)的(de)總體布局(ju),可(ke)防(fang)止進(jin)水口(kou)(kou)(kou)(kou)淤(yu)堵(du)、降低(di)洞(dong)(dong)內(nei)流(liu)(liu)速、減輕流(liu)(liu)道(dao)磨(mo)蝕(shi)、提高(gao)閘門運用的(de)可(ke)靠性。其中(zhong)6條(tiao)(tiao)(tiao)引(yin)水發(fa)(fa)電(dian)洞(dong)(dong)和(he)(he)3條(tiao)(tiao)(tiao)排(pai)(pai)沙(sha)洞(dong)(dong)進(jin)口(kou)(kou)(kou)(kou)共組(zu)成(cheng)(cheng)3座發(fa)(fa)電(dian)進(jin)水塔(ta),每座塔(ta)布置(zhi)兩(liang)條(tiao)(tiao)(tiao)發(fa)(fa)電(dian)洞(dong)(dong)進(jin)口(kou)(kou)(kou)(kou),其下部中(zhong)間(jian)為一條(tiao)(tiao)(tiao)排(pai)(pai)水洞(dong)(dong)進(jin)口(kou)(kou)(kou)(kou),高(gao)差15—20m,可(ke)使粗沙(sha)經排(pai)(pai)沙(sha)洞(dong)(dong)下泄(xie)(xie),減少對水輪機(ji)的(de)磨(mo)蝕(shi)。9條(tiao)(tiao)(tiao)泄(xie)(xie)洪(hong)排(pai)(pai)沙(sha)洞(dong)(dong)由(you)3條(tiao)(tiao)(tiao)導流(liu)(liu)隧洞(dong)(dong)改建(jian)的(de)3條(tiao)(tiao)(tiao)孔板(ban)洞(dong)(dong)、3條(tiao)(tiao)(tiao)明流(liu)(liu)洞(dong)(dong)、3條(tiao)(tiao)(tiao)排(pai)(pai)沙(sha)洞(dong)(dong)組(zu)成(cheng)(cheng),與(yu)1條(tiao)(tiao)(tiao)溢洪(hong)道(dao)在平面(mian)上(shang)平行布置(zhi),其出(chu)(chu)口(kou)(kou)(kou)(kou)處設總寬(kuan)356米(mi)(mi)、總長(chang)210米(mi)(mi)、最大(da)深度28米(mi)(mi)的(de)2級消(xiao)力(li)塘(tang),對以上(shang)10股水流(liu)(liu)集中(zhong)消(xiao)能(neng),經泄(xie)(xie)水渠與(yu)下游黃(huang)河(he)連接。進(jin)水塔(ta)和(he)(he)消(xiao)力(li)塘(tang)開挖(wa)形(xing)成(cheng)(cheng)的(de)進(jin)出(chu)(chu)口(kou)(kou)(kou)(kou)高(gao)邊坡(po)最高(gao)達120米(mi)(mi)。為保證(zheng)高(gao)邊坡(po)穩定,采用了減載、排(pai)(pai)水及1100多(duo)根預應力(li)錨索支(zhi)護、豎直抗(kang)滑(hua)樁加固的(de)綜合治(zhi)理措施,取得了良好的(de)效(xiao)果。
引(yin)水發(fa)(fa)電(dian)系統也布置在樞(shu)紐左岸。包括(kuo)6條發(fa)(fa)電(dian)引(yin)水洞、地下廠房(fang)、主變(bian)室、閘門(men)室和3條尾水隧洞。廠房(fang)內安裝(zhuang)6臺30萬千(qian)(qian)瓦(wa)混流式水輪發(fa)(fa)電(dian)機組,總裝(zhuang)機容量180萬千(qian)(qian)瓦(wa),多年平均年發(fa)(fa)電(dian)量45.99億千(qian)(qian)瓦(wa).時/58.51億千(qian)(qian)瓦(wa).時(前10年/后10年)。
小浪底(di)(di)水(shui)利(li)樞紐(niu)主(zhu)體(ti)工程建(jian)設采用國(guo)(guo)際招標,以(yi)意大(da)(da)利(li)英(ying)波吉羅(luo)公(gong)司為(wei)責任(ren)(ren)方的(de)黃河(he)承包商中大(da)(da)壩(ba)標,以(yi)德(de)國(guo)(guo)旭普林公(gong)司為(wei)責任(ren)(ren)方的(de)中德(de)意聯營體(ti)中進水(shui)口泄洪(hong)洞和溢洪(hong)道群(qun)標,以(yi)法(fa)國(guo)(guo)杜美茲公(gong)司為(wei)責任(ren)(ren)方的(de)小浪底(di)(di)聯營體(ti)中發(fa)電系統標。1994年7月16日合同簽字儀式在北京舉行。
開發目標以防洪(防凌)、減淤為(wei)主,兼顧供水(shui)(shui)、灌溉和發電,蓄(xu)清排(pai)渾(hun),除(chu)害興利(li)(li),綜合利(li)(li)用。小浪底水(shui)(shui)利(li)(li)樞紐戰(zhan)略地位重要,工程規模宏大,地質(zhi)條(tiao)件復雜,水(shui)(shui)沙條(tiao)件特殊(shu),運用要求嚴格,被中外水(shui)(shui)利(li)(li)專家稱(cheng)為(wei)世界上(shang)最(zui)復雜的水(shui)(shui)利(li)(li)工程之一。
大壩設計
小浪底水(shui)利樞(shu)紐(niu)主(zhu)壩(ba)(ba)為(wei)(wei)壤土斜心(xin)墻(qiang)土石壩(ba)(ba),上游圍堰為(wei)(wei)壩(ba)(ba)體的(de)一部(bu)分,壩(ba)(ba)基(ji)采用混凝土防(fang)滲(shen)墻(qiang),工程初步設計為(wei)(wei)斜墻(qiang)壩(ba)(ba)型,后(hou)優化為(wei)(wei)斜心(xin)墻(qiang)壩(ba)(ba)型,兩者的(de)主(zhu)要區別在(zai)于前者以(yi)水(shui)平防(fang)滲(shen)為(wei)(wei)主(zhu),垂(chui)(chui)直(zhi)防(fang)滲(shen)為(wei)(wei)輔(fu)(fu);后(hou)者以(yi)垂(chui)(chui)直(zhi)防(fang)滲(shen)為(wei)(wei)主(zhu),水(shui)平防(fang)滲(shen)為(wei)(wei)輔(fu)(fu)。大壩(ba)(ba)的(de)設計有(you)以(yi)下幾個特(te)點:
1、適度地(di)考慮了庫區淤積的(de)防滲作用,使壩基防滲效果更為可靠;
2、上(shang)爬的內(nei)鋪蓋改(gai)善了上(shang)游壩坡(po)的抗滑穩定性,既(ji)實現了庫區淤積的連接,又(you)不會對壩坡(po)產生太(tai)大的影響;
3、減少了上游圍堰的土(tu)方填筑量及基礎處理(li)工程量,使(shi)截流后比(bi)較緊張的工期得以緩(huan)解;
4、與斜墻壩相比,混(hun)凝土防(fang)滲墻受力有(you)所(suo)惡(e)化,且造(zao)墻難度增(zeng)加(jia)。
工程任務
減淤
小(xiao)浪底(di)水(shui)利(li)樞紐采用(yong)(yong)“人(ren)工擾沙”方式(shi),即(ji)借助河(he)(he)水(shui)已有的勢能,輔(fu)以(yi)人(ren)工擾動(dong)河(he)(he)床土質,促進河(he)(he)床泥沙啟動(dong),實(shi)現河(he)(he)床下(xia)(xia)切(qie)、輸(shu)沙入海(hai)。簡單地(di)說,就是通過攪動(dong)讓河(he)(he)底(di)淤(yu)沙上浮,使(shi)其(qi)與自然水(shui)流(liu)一起下(xia)(xia)泄,從而達到清淤(yu)輸(shu)沙的目的。第三次調(diao)水(shui)調(diao)沙試驗共設3個擾沙點,分(fen)別位(wei)于小(xiao)浪底(di)庫(ku)尾(wei)、河(he)(he)南范縣(xian)李橋河(he)(he)段、山東梁山縣(xian)小(xiao)路(lu)口河(he)(he)段。以(yi)上方法,可使(shi)黃(huang)河(he)(he)下(xia)(xia)游(you)河(he)(he)床20年內不淤(yu)積抬高。非汛期下(xia)(xia)泄清水(shui)挾沙入海(hai)以(yi)及人(ren)造峰沖淤(yu),對(dui)下(xia)(xia)游(you)河(he)(he)床有進一步(bu)減淤(yu)作用(yong)(yong)。
發電
小浪底水利樞紐裝(zhuang)機(ji)6臺,每臺30萬kw,總裝(zhuang)機(ji)容量180萬kw,額定水頭112m,是河南電網理想的調峰(feng)電站。電廠以220kV一級(ji)電壓送(song)出,出線6回(hui)(hui),4回(hui)(hui)至(zhi)洛北(bei)5000kV升壓站,1回(hui)(hui)至(zhi)豫北(bei),1回(hui)(hui)備用,220kV側為比母(mu)線分段(duan),左段(duan)接(jie)2臺機(ji),2回(hui)(hui)出線,右段(duan)接(jie)4臺機(ji),4回(hui)(hui)出線。
防洪防凌
水文氣象資料分(fen)析表明,黃河可能出現55000m3/s的(de)特大(da)洪水,即使經過(guo)三門(men)峽、陸渾、故縣等水庫攔蓄后,花園(yuan)口站(zhan)的(de)洪峰流量仍(reng)將達(da)到42000m3/s。黃河下(xia)游防洪工程的(de)設(she)防標(biao)準僅為22000m3/s(花園(yuan)口站(zhan)),不到百年(nian)一(yi)遇(yu)。三門(men)峽水庫對控制凌汛期流量起到了(le)一(yi)定的(de)作用(yong),但由(you)于可利用(yong)庫容(rong)過(guo)小,防凌效果(guo)有限。
小浪底水(shui)利樞紐與已建的(de)三(san)門(men)峽、陸(lu)渾(hun)、故縣水(shui)庫(ku)聯合運用(yong)(yong),并利用(yong)(yong)東(dong)平湖分(fen)洪(hong),可(ke)(ke)使(shi)黃河(he)下游防洪(hong)標準提高到千(qian)年一遇(yu)。千(qian)年一遇(yu)以下洪(hong)水(shui)不再使(shi)用(yong)(yong)北金堤滯洪(hong)區,減輕常遇(yu)洪(hong)水(shui)的(de)防洪(hong)負擔(dan)。與三(san)門(men)峽水(shui)庫(ku)聯合運用(yong)(yong),共同調蓄凌(ling)(ling)汛期水(shui)量,可(ke)(ke)基(ji)本解除黃河(he)下游凌(ling)(ling)汛威脅。
供水灌溉
黃河(he)下(xia)游(you)控制灌(guan)溉(gai)面(mian)積約4000萬(wan)畝,每年(nian)(nian)(nian)(nian)平均實(shi)灌(guan)面(mian)積1760萬(wan)畝,年(nian)(nian)(nian)(nian)引水(shui)(shui)量80~100億m3,由于黃河(he)來(lai)(lai)水(shui)(shui)豐枯不(bu)勻,又缺(que)乏(fa)足夠(gou)的(de)水(shui)(shui)量調節能力,灌(guan)溉(gai)用水(shui)(shui)保證率(lv)僅32%。二十(shi)世紀七十(shi)年(nian)(nian)(nian)(nian)代(dai)以來(lai)(lai),沿河(he)工農業(ye)迅猛發展,城(cheng)市供水(shui)(shui)需(xu)(xu)求急劇增長。自1987年(nian)(nian)(nian)(nian)之(zhi)后,山東利(li)(li)津至入(ru)海口河(he)段幾乎每年(nian)(nian)(nian)(nian)斷流,水(shui)(shui)資源供需(xu)(xu)矛盾(dun)十(shi)分突出(chu)。小浪底水(shui)(shui)利(li)(li)樞紐可減少(shao)下(xia)游(you)斷流的(de)機率(lv),平均每年(nian)(nian)(nian)(nian)可增加20億m3的(de)調節水(shui)(shui)量,滿(man)足下(xia)游(you)灌(guan)溉(gai)與城(cheng)市用水(shui)(shui),提高灌(guan)溉(gai)保證率(lv)。
工程建設
小浪底(di)水利(li)樞紐工(gong)程(cheng)1991年(nian)9月12日開始(shi)進行前(qian)期準(zhun)備工(gong)程(cheng)施(shi)工(gong),1994年(nian)9月1日主體工(gong)程(cheng)正式開工(gong),1997年(nian)10月28日截流(liu),2000年(nian)初第一臺機組投(tou)產發(fa)電,2001年(nian)底(di)主體工(gong)程(cheng)全部完工(gong)。取得(de)了工(gong)期提前(qian),投(tou)資(zi)節(jie)約,質量優量的好成績。工(gong)程(cheng)建設(she)可以劃(hua)分為準(zhun)備工(gong)程(cheng)施(shi)工(gong)、國(guo)際招標、主體工(gong)程(cheng)施(shi)工(gong)、尾工(gong)四個階段。
準備工程施工
小浪底工(gong)(gong)(gong)程(cheng)(cheng)前期(qi)準備工(gong)(gong)(gong)程(cheng)(cheng)包括(kuo)外線(xian)公(gong)路工(gong)(gong)(gong)程(cheng)(cheng)、內線(xian)公(gong)路工(gong)(gong)(gong)程(cheng)(cheng)、黃河(he)公(gong)路橋工(gong)(gong)(gong)程(cheng)(cheng)、留莊鐵(tie)路轉(zhuan)運站、施(shi)(shi)工(gong)(gong)(gong)供電(dian)工(gong)(gong)(gong)程(cheng)(cheng)、施(shi)(shi)工(gong)(gong)(gong)供水工(gong)(gong)(gong)程(cheng)(cheng)、通訊(xun)工(gong)(gong)(gong)程(cheng)(cheng)、砂石(shi)骨料試開采、臨(lin)時房屋工(gong)(gong)(gong)程(cheng)(cheng)、導流洞(dong)施(shi)(shi)工(gong)(gong)(gong)支洞(dong)工(gong)(gong)(gong)程(cheng)(cheng)、施(shi)(shi)工(gong)(gong)(gong)區移民安(an)置(zhi)工(gong)(gong)(gong)程(cheng)(cheng)。
樞紐施工(gong)采用分期導(dao)流(liu)(liu),一期導(dao)流(liu)(liu)圍右岸施工(gong),原(yuan)河(he)床(chuang)過流(liu)(liu);二期上、下游圍堰擋水(shui),主(zhu)河(he)槽施工(gong),同時進行左岸導(dao)流(liu)(liu)洞和其他建筑物(wu)施工(gong)。在截流(liu)(liu)時主(zhu)體(ti)土(tu)建工(gong)程已完成土(tu)石方開挖(wa)85%,土(tu)石方填筑總量的32%,混(hun)凝(ning)土(tu)和鋼(gang)筋混(hun)凝(ning)土(tu)總量48%。截流(liu)(liu)后,隨(sui)大壩升高和泄洪(hong)排沙建筑物(wu)逐(zhu)步建成,泄洪(hong)能(neng)力逐(zhu)漸加強(qiang),各年度(du)汛(xun)標(biao)準逐(zhu)步提(ti)高。
樞紐主體工(gong)程(cheng)(cheng)(cheng)量(liang)(含前期準備工(gong)程(cheng)(cheng)(cheng)):土(tu)石(shi)方開(kai)挖6027萬(wan)立(li)方米,土(tu)石(shi)方填筑(zhu)5574萬(wan)立(li)方米,混凝(ning)土(tu)及(ji)鋼筋混凝(ning)土(tu)354萬(wan)立(li)方米,金(jin)屬結(jie)構安(an)裝3.26萬(wan)噸,機電設備安(an)裝3.09萬(wan)噸。工(gong)程(cheng)(cheng)(cheng)總投資347.46億元(yuan),其中水(shui)庫淹(yan)(yan)沒處理和移民費用86.75億元(yuan)。水(shui)庫淹(yan)(yan)沒耕地1.4萬(wan)hm,移民安(an)置人口18.97萬(wan)人。
施工道路建設
為了減少(shao)截流(liu)前占直線(xian)工(gong)(gong)期(qi)的(de)施(shi)工(gong)(gong)項目的(de)壓力(li),節約外資(zi),在進(jin)行準備工(gong)(gong)程施(shi)工(gong)(gong)的(de)同(tong)時,進(jin)行了右岸(an)主(zhu)壩防(fang)滲(shen)墻、導流(liu)洞、上中導洞、進(jin)水口開挖(wa)、出水口開挖(wa)等(deng)主(zhu)體工(gong)(gong)程項目施(shi)工(gong)(gong)。
施工專用黃河公路大橋
準(zhun)(zhun)(zhun)備(bei)(bei)(bei)工(gong)(gong)(gong)(gong)(gong)程(cheng)(cheng)(cheng)施工(gong)(gong)(gong)(gong)(gong)從(cong)1991年9月12日(ri)起至1994年4月18日(ri)水(shui)(shui)利部對前期準(zhun)(zhun)(zhun)備(bei)(bei)(bei)工(gong)(gong)(gong)(gong)(gong)程(cheng)(cheng)(cheng)進(jin)行(xing)驗收為(wei)(wei)止,歷時2年7個月,完(wan)成了(le)所(suo)有水(shui)(shui)、電、路、通訊、營地、鐵(tie)路轉(zhuan)運站等準(zhun)(zhun)(zhun)備(bei)(bei)(bei)工(gong)(gong)(gong)(gong)(gong)作,完(wan)成了(le)施工(gong)(gong)(gong)(gong)(gong)區移(yi)民(min)安置(zhi)及(ji)庫區移(yi)民(min)安置(zhi)試點工(gong)(gong)(gong)(gong)(gong)作,完(wan)成了(le)招標文(wen)件中(zhong)承諾(nuo)的右(you)岸主壩(ba)防(fang)滲(shen)墻、導(dao)流洞施工(gong)(gong)(gong)(gong)(gong)支洞、上中(zhong)導(dao)洞、進(jin)水(shui)(shui)口(kou)開(kai)挖、出水(shui)(shui)口(kou)開(kai)挖等主體工(gong)(gong)(gong)(gong)(gong)程(cheng)(cheng)(cheng)項目應實現的形象(xiang)。國(guo)際(ji)承包商進(jin)場時稱贊,小浪(lang)(lang)底工(gong)(gong)(gong)(gong)(gong)程(cheng)(cheng)(cheng)是(shi)(shi)他(ta)們所(suo)見(jian)到(dao)的最好進(jin)場條件。準(zhun)(zhun)(zhun)備(bei)(bei)(bei)工(gong)(gong)(gong)(gong)(gong)程(cheng)(cheng)(cheng)施工(gong)(gong)(gong)(gong)(gong)期間(jian)(jian),基(ji)本(ben)確立了(le)小浪(lang)(lang)底工(gong)(gong)(gong)(gong)(gong)程(cheng)(cheng)(cheng)建(jian)(jian)(jian)設各方之間(jian)(jian)的關(guan)系(xi)(xi)(xi),尤其是(shi)(shi)建(jian)(jian)(jian)設單位和設計(ji)單位之間(jian)(jian)的關(guan)系(xi)(xi)(xi),即:小浪(lang)(lang)底建(jian)(jian)(jian)管(guan)局(ju)代表國(guo)家管(guan)理小浪(lang)(lang)底工(gong)(gong)(gong)(gong)(gong)程(cheng)(cheng)(cheng),對進(jin)度、質(zhi)量、安全(quan)、投資全(quan)面負(fu)責(ze);小浪(lang)(lang)底建(jian)(jian)(jian)管(guan)局(ju)和設計(ji)院是(shi)(shi)甲乙方合同關(guan)系(xi)(xi)(xi),設計(ji)院在(zai)設計(ji)質(zhi)量上對小浪(lang)(lang)底建(jian)(jian)(jian)管(guan)局(ju)負(fu)責(ze),小浪(lang)(lang)底建(jian)(jian)(jian)管(guan)局(ju)對工(gong)(gong)(gong)(gong)(gong)程(cheng)(cheng)(cheng)質(zhi)量負(fu)責(ze)。這在(zai)當時是(shi)(shi)基(ji)建(jian)(jian)(jian)體制(zhi)改革的重要(yao)舉措,為(wei)(wei)小浪(lang)(lang)底工(gong)(gong)(gong)(gong)(gong)程(cheng)(cheng)(cheng)實行(xing)業主負(fu)責(ze)制(zhi)打下了(le)基(ji)礎。
準備(bei)工(gong)程施(shi)工(gong)期間,組(zu)建了(le)工(gong)程監理(li)單位,比(bi)照FIDIC條件的要(yao)求開(kai)展工(gong)作,為主體工(gong)程開(kai)工(gong)后全面進行工(gong)程監理(li)積累了(le)經驗。
前期準備工(gong)(gong)程(cheng)的(de)(de)組織(zhi)緊扣主(zhu)體(ti)工(gong)(gong)程(cheng)進(jin)(jin)行(xing)國際(ji)招(zhao)標(biao)的(de)(de)要求展開,時間安排(pai)以滿(man)足利用(yong)世行(xing)貸款(kuan)的(de)(de)時間要求為前提;施工(gong)(gong)項目(mu)安排(pai)力(li)(li)爭多(duo)揭示地(di)質條件(jian),提前進(jin)(jin)行(xing)關鍵線路上的(de)(de)主(zhu)體(ti)工(gong)(gong)程(cheng)項目(mu)施工(gong)(gong),減輕直線工(gong)(gong)期壓力(li)(li);將人(ren)力(li)(li)分成施工(gong)(gong)和招(zhao)標(biao)兩部分,兩項工(gong)(gong)作(zuo)并(bing)行(xing)不(bu)悖;管(guan)理工(gong)(gong)作(zuo)比照FIDIC合(he)同條件(jian)要求進(jin)(jin)行(xing)。上述一系列工(gong)(gong)作(zuo)為主(zhu)體(ti)工(gong)(gong)程(cheng)建(jian)設順利實施打下了良好的(de)(de)基礎。
生態效益
黃河作為中(zhong)華民族的(de)(de)母親河,以占全國河川(chuan)徑(jing)流2%的(de)(de)有限(xian)水資源,擔(dan)負著全國12%的(de)(de)人(ren)口(kou)、17%的(de)(de)耕地和沿(yan)黃50多座大中(zhong)型(xing)城市的(de)(de)供水任(ren)務。自(zi)上(shang)世(shi)紀90年代以來(lai),黃河飽(bao)受斷流之痛(tong)、淤積之痛(tong)。
隨著黃(huang)河陷(xian)入(ru)“生(sheng)(sheng)存險境”,中國的治黃(huang)理(li)念(nian)由“控制洪水”轉變為“維持河流健康(kang)生(sheng)(sheng)命”,小(xiao)浪底工(gong)程的投入(ru)使用,成為這(zhe)一(yi)“生(sheng)(sheng)態治黃(huang)”理(li)念(nian)得(de)以實現的關(guan)鍵所(suo)在(zai)。
坐落(luo)在(zai)晉陜(shan)峽谷(gu)出口處的小浪底水(shui)(shui)(shui)(shui)庫,就像一(yi)個大(da)“水(shui)(shui)(shui)(shui)盆”,既可(ke)以(yi)攔蓄上(shang)游洪水(shui)(shui)(shui)(shui),使黃(huang)河下(xia)游防洪標準(zhun)由60年一(yi)遇提高到千年一(yi)遇,又可(ke)以(yi)利(li)用(yong)水(shui)(shui)(shui)(shui)庫蓄水(shui)(shui)(shui)(shui)人工制造洪峰,減輕水(shui)(shui)(shui)(shui)庫淤積,沖(chong)刷下(xia)游河道。
2003年(nian),黃河(he)發生(sheng)歷(li)史罕見的(de)秋(qiu)汛,黃河(he)防總啟用小浪底水庫(ku)攔蓄十多場洪水,避免了黃河(he)下游出現(xian)大面積(ji)漫灘(tan)災害,同時(shi),使近百億立方米的(de)洪水變成水資源存(cun)入水庫(ku)。
小(xiao)浪底水(shui)利(li)樞紐投入(ru)運(yun)營以來(lai),黃(huang)河連(lian)續(xu)13年(nian)不斷流,先后完成(cheng)7次(ci)引(yin)黃(huang)濟(ji)(ji)津、12次(ci)引(yin)黃(huang)濟(ji)(ji)青(qing)、5次(ci)引(yin)黃(huang)濟(ji)(ji)淀(dian)等(deng)跨流域應急調(diao)水(shui)任務;還實現(xian)了黃(huang)河下(xia)(xia)游(you)(you)連(lian)續(xu)13年(nian)安全度汛,基(ji)本解(jie)除了黃(huang)河下(xia)(xia)游(you)(you)凌汛威脅;有效改(gai)善了小(xiao)浪底庫區(qu)(qu)和下(xia)(xia)游(you)(you)地區(qu)(qu)的(de)生態環境(jing)。
移民安置
小浪(lang)底(di)工(gong)程(cheng)庫區移(yi)(yi)(yi)民(min)(min)分三期(qi)(qi)進(jin)行。第(di)一期(qi)(qi)為(wei)(wei)180米(mi)高(gao)(gao)(gao)程(cheng)以下及(ji)(ji)受(shou)影(ying)響(xiang)(xiang)的4.6萬(wan)移(yi)(yi)(yi)民(min)(min)。從(cong)(cong)1995年(nian)(nian)開(kai)始到1997年(nian)(nian)6月(yue)(yue)底(di)完成。第(di)二期(qi)(qi)為(wei)(wei)180-265米(mi)高(gao)(gao)(gao)程(cheng)區間及(ji)(ji)受(shou)影(ying)響(xiang)(xiang)的12.6萬(wan)移(yi)(yi)(yi)民(min)(min),從(cong)(cong)1997年(nian)(nian)開(kai)始到2000年(nian)(nian)結束。第(di)三期(qi)(qi)為(wei)(wei)265-275米(mi)高(gao)(gao)(gao)程(cheng)區間及(ji)(ji)受(shou)影(ying)響(xiang)(xiang)的1.7萬(wan)移(yi)(yi)(yi)民(min)(min),從(cong)(cong)2000年(nian)(nian)開(kai)始到2003年(nian)(nian)完成。一期(qi)(qi)移(yi)(yi)(yi)民(min)(min)于1997年(nian)(nian)6月(yue)(yue)底(di)按計劃(hua)完成,為(wei)(wei)按期(qi)(qi)截流創(chuang)造了條件(jian)。截流后(hou)以及(ji)(ji)1998年(nian)(nian)移(yi)(yi)(yi)民(min)(min)安(an)置(zhi)進(jin)度有(you)所拖后(hou),1999年(nian)(nian)1月(yue)(yue)5日(ri),水利部、河(he)南(nan)省(sheng)政(zheng)府(fu)(fu)、山西省(sheng)政(zheng)府(fu)(fu)在北(bei)京召開(kai)部省(sheng)聯(lian)席會議,布置(zhi)移(yi)(yi)(yi)民(min)(min)安(an)置(zhi)工(gong)作,解(jie)決有(you)關問題。6月(yue)(yue)30日(ri),215米(mi)高(gao)(gao)(gao)程(cheng)以下移(yi)(yi)(yi)民(min)(min)按計劃(hua)搬(ban)離庫區,移(yi)(yi)(yi)民(min)(min)人(ren)數4.5萬(wan)人(ren),為(wei)(wei)下閘蓄水創(chuang)造了條件(jian)。2001年(nian)(nian)底(di)前265米(mi)高(gao)(gao)(gao)程(cheng)以下移(yi)(yi)(yi)民(min)(min)搬(ban)遷完畢,使得小浪(lang)底(di)工(gong)程(cheng)能夠(gou)正常(chang)發揮攔洪(hong)效益。
社會經濟
農業
小(xiao)(xiao)浪底水(shui)庫淹沒(mei)影響到河南、山(shan)西(xi)兩省三市(shi)一地(di)(di)區(qu)的(de)八個縣(市(shi)),29個鄉(鎮),涉(she)及人(ren)(ren)口16萬(wan)人(ren)(ren),淹沒(mei)土地(di)(di)總(zong)面積(ji)為(wei)42萬(wan)畝,其(qi)中耕地(di)(di)面積(ji)20萬(wan)畝。該(gai)區(qu)域(yu)人(ren)(ren)口分布不均(jun)(jun),東(dong)部(bu)大(da)于西(xi)部(bu),平均(jun)(jun)人(ren)(ren)口密度330人(ren)(ren)/平方公里,人(ren)(ren)均(jun)(jun)耕地(di)(di)約1.25畝。淹沒(mei)區(qu)每(mei)年的(de)農(nong)業總(zong)產(chan)值1.2億(yi)元。 農(nong)作物(wu)夏糧以(yi)小(xiao)(xiao)麥為(wei)主,秋糧以(yi)玉(yu)米(mi)、谷(gu)子、紅薯為(wei)主。農(nong)作物(wu)產(chan)量(liang)水(shui)田(tian)畝產(chan)超過1000斤(jin),旱田(tian)畝產(chan)500~900斤(jin),棉花(hua)畝產(chan)50~150斤(jin)。
工業
各縣(xian)(xian)(市(shi))的工礦(kuang)企業只有(you)少部(bu)分(fen)分(fen)布在(zai)小浪底(di)區域(yu)(yu)內(nei),1996年區域(yu)(yu)內(nei)六縣(xian)(xian)(市(shi))的工業總(zong)產(chan)值為(wei)5億元(yuan),而其全部(bu)工業總(zong)產(chan)值為(wei)86.5億元(yuan)。從區域(yu)(yu)內(nei)的工業產(chan)值分(fen)布來看,垣(yuan)曲縣(xian)(xian)最大(da),占(zhan)區域(yu)(yu)的46%;新安次之,占(zhan)31.6%,其它縣(xian)(xian)(市(shi))較少,均小于8.0%。
布設情況
小(xiao)浪底(di)(di)的環境監(jian)(jian)測(ce)(ce)(ce)(ce)主要(yao)分(fen)三(san)個(ge)(ge)(ge)部分(fen),即庫區(qu)(qu)、施工區(qu)(qu)、移民區(qu)(qu),各(ge)部分(fen)監(jian)(jian)測(ce)(ce)(ce)(ce)項(xiang)目、斷(duan)面測(ce)(ce)(ce)(ce)點(dian)(dian)(dian)(dian)布設、監(jian)(jian)測(ce)(ce)(ce)(ce)頻率(lv)各(ge)不相同(tong)。庫區(qu)(qu)水(shui)(shui)(shui)(shui)質監(jian)(jian)測(ce)(ce)(ce)(ce)包(bao)括(kuo)(kuo)地(di)面水(shui)(shui)(shui)(shui)監(jian)(jian)測(ce)(ce)(ce)(ce)14個(ge)(ge)(ge)斷(duan)面,底(di)(di)質監(jian)(jian)測(ce)(ce)(ce)(ce)4個(ge)(ge)(ge)斷(duan)面;施工區(qu)(qu)監(jian)(jian)測(ce)(ce)(ce)(ce)包(bao)括(kuo)(kuo)地(di)表水(shui)(shui)(shui)(shui)干支流6個(ge)(ge)(ge)斷(duan)面、生(sheng)活(huo)用水(shui)(shui)(shui)(shui)37個(ge)(ge)(ge)測(ce)(ce)(ce)(ce)點(dian)(dian)(dian)(dian)、河(he)流底(di)(di)質12個(ge)(ge)(ge)點(dian)(dian)(dian)(dian)、生(sheng)活(huo)污(wu)水(shui)(shui)(shui)(shui)和(he)(he)生(sheng)產(chan)廢(fei)水(shui)(shui)(shui)(shui)17個(ge)(ge)(ge)監(jian)(jian)測(ce)(ce)(ce)(ce)點(dian)(dian)(dian)(dian)、大氣測(ce)(ce)(ce)(ce)點(dian)(dian)(dian)(dian)、噪(zao)聲12個(ge)(ge)(ge)測(ce)(ce)(ce)(ce)點(dian)(dian)(dian)(dian);移民區(qu)(qu)包(bao)括(kuo)(kuo)生(sheng)活(huo)飲用水(shui)(shui)(shui)(shui)28個(ge)(ge)(ge)測(ce)(ce)(ce)(ce)點(dian)(dian)(dian)(dian)和(he)(he)土壤28個(ge)(ge)(ge)采(cai)樣點(dian)(dian)(dian)(dian)。根據實際(ji)情況,監(jian)(jian)測(ce)(ce)(ce)(ce)時(shi)斷(duan)面測(ce)(ce)(ce)(ce)點(dian)(dian)(dian)(dian)數(shu)和(he)(he)監(jian)(jian)測(ce)(ce)(ce)(ce)項(xiang)目有所調(diao)整。
地位作用
小浪底(di)工(gong)(gong)程(cheng)是三門峽(xia)以(yi)下唯(wei)一能夠(gou)取得較大庫容的(de)(de)控(kong)制性工(gong)(gong)程(cheng),處在控(kong)制黃(huang)河下游水沙的(de)(de)關鍵部位,也是唯(wei)一能夠(gou)擔(dan)負(fu)下游防洪、防凌(ling)、兼(jian)顧工(gong)(gong)農(nong)業供水、發電的(de)(de)綜合水利樞紐,具有優越的(de)(de)自然條件和重要(yao)的(de)(de)戰略地(di)位。
三(san)(san)門峽(xia)(xia)工程的負(fu)面影響(xiang),其主要(yao)表現在(zai)(zai);大(da)壩(ba)抬(tai)高水(shui)(shui)位(wei)后降低了(le)流(liu)速(su)(su),加速(su)(su)上游(you)淤積,從(cong)而加劇(ju)了(le)上游(you)渭河地區(qu)的水(shui)(shui)災(zai)。小(xiao)浪底(di)工程的設計(ji)則充分汲取三(san)(san)門峽(xia)(xia)工程的經驗教訓。三(san)(san)門峽(xia)(xia)工程在(zai)(zai)泥(ni)沙(sha)問(wen)題上的最大(da)教訓是(shi)對上游(you)水(shui)(shui)土(tu)保持(chi)(chi)攔沙(sha)作(zuo)用(yong)的估計(ji),以(yi)及水(shui)(shui)庫的作(zuo)用(yong)過分樂觀,而預(yu)計(ji)的入庫泥(ni)沙(sha)量(liang)偏低。三(san)(san)門峽(xia)(xia)工程的第二個教訓,就是(shi)在(zai)(zai)泥(ni)沙(sha)比(bi)率高的河流(liu)建了(le)水(shui)(shui)庫之(zhi)后,不(bu)能(neng)(neng)采用(yong)高水(shui)(shui)位(wei)的蓄水(shui)(shui)運行方式,而應該采用(yong)“蓄清排渾(hun)”的方式,在(zai)(zai)汛期低水(shui)(shui)位(wei)時,建筑物(wu)要(yao)有(you)足夠的泄洪(hong)排沙(sha)能(neng)(neng)力。小(xiao)浪底(di)水(shui)(shui)庫區(qu)為峽(xia)(xia)谷(gu)河段,有(you)利于保持(chi)(chi)較(jiao)大(da)的長期有(you)效庫容,可以(yi)長期發揮調(diao)水(shui)(shui)調(diao)沙(sha)、興利除害的效益,防洪(hong)運用(yong)比(bi)較(jiao)可靠,不(bu)僅(jin)可以(yi)攔蓄特大(da)洪(hong)水(shui)(shui),還可以(yi)根據下游(you)防洪(hong)需(xu)要(yao)適當控制中(zhong)小(xiao)型洪(hong)水(shui)(shui)。這是(shi)其它工程措施所不(bu)能(neng)(neng)比(bi)擬的。
小(xiao)浪(lang)底水(shui)庫攔(lan)調泥沙,能(neng)夠減緩黃河(he)(he)下游河(he)(he)道淤積,還可以通過人造洪峰、調水(shui)調沙等運用方式,長期發揮較大的減淤作用,與其(qi)它減淤措施相比,在(zai)減淤效果(guo)、減淤單(dan)位投(tou)資、影響人口等方面,小(xiao)浪(lang)底工(gong)(gong)程(cheng)都明顯比三門(men)峽水(shui)利工(gong)(gong)程(cheng)優(you)勝。
小(xiao)浪底水(shui)利(li)(li)樞紐(niu)在保證下游防洪、滿足下游減(jian)淤(yu)的前提下,還可以調節徑(jing)流,為下游工(gong)農業(ye)用水(shui)增加可利(li)(li)用的水(shui)源,發電調峰可以改善電力(li)系統的運行條件。綜合各方面因素,小(xiao)浪底水(shui)利(li)(li)樞紐(niu)是(shi)黃河(he)下游防洪減(jian)淤(yu)工(gong)程中最佳方案。