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11月4日,由水(shui)电(dian)三局(ju)(ju)、水(shui)电(dian)四局(ju)(ju)、水(shui)电(dian)八局(ju)(ju)、水(shui)电(dian)十(shi)(shi)四局(ju)(ju)、水(shui)电(dian)十(shi)(shi)五局(ju)(ju)、水(shui)电(dian)基(ji)础局(ju)(ju)参建(jian),西(xi)北院(yuan)监理的东庄(zhuang)水(shui)利枢(shu)纽工程正式下闸蓄(xu)水(shui)。 东庄水利枢纽坐落于(yu)陕西咸阳市礼(li)泉县,混凝土双曲(qu)拱坝最大坝高230米(mi)(mi),总库容(rong)32.76亿立(li)方米(mi)(mi),年总供(gong)水量4.35亿立(li)方米(mi)(mi)。工程开发任务(wu)以防洪减(jian)淤为主(zhu),兼顾供(gong)水、发电和(he)改善生态等综合(he)利用。 作为(wei)国务院确定的(de)(de)172项(xiang)节水(shui)供(gong)水(shui)重大水(shui)利(li)(li)工程(cheng)(cheng)之(zhi)一(yi),工程(cheng)(cheng)创下(xia)了5项(xiang)世(shi)界(jie)之(zhi)最(zui):“世(shi)界(jie)上(shang)(shang)(shang)(shang)第一(yi)座以防洪减(jian)淤为(wei)主要任务的(de)(de)特高(gao)拱(gong)坝(ba)(ba)”、“世(shi)界(jie)上(shang)(shang)(shang)(shang)含沙量和单位水(shui)沙荷(he)载最(zui)大的(de)(de)特高(gao)拱(gong)坝(ba)(ba)”、“世(shi)界(jie)上(shang)(shang)(shang)(shang)第一(yi)座在悬托型河(he)谷(gu)上(shang)(shang)(shang)(shang)修建的(de)(de)特高(gao)拱(gong)坝(ba)(ba)”、“世(shi)界(jie)上(shang)(shang)(shang)(shang)库区防渗规(gui)模最(zui)大、孔深最(zui)深的(de)(de)水(shui)利(li)(li)工程(cheng)(cheng)”、“世(shi)界(jie)上(shang)(shang)(shang)(shang)第一(yi)座二(er)道坝(ba)(ba)采用堆石混凝土(tu)的(de)(de)水(shui)利(li)(li)工程(cheng)(cheng)” 东(dong)庄(zhuang)水利(li)枢纽混凝(ning)土双(shuang)曲(qu)拱(gong)坝在(zai)施工(gong)(gong)(gong)过程(cheng)中面临(lin)着地质(zhi)条件极(ji)端复杂、高含沙水流(liu)工(gong)(gong)(gong)况(kuang)、超(chao)大(da)体积混凝(ning)土、高空(kong)大(da)跨度(du)作业等施工(gong)(gong)(gong)难(nan)点(dian),监理(li)中心针对上述施工(gong)(gong)(gong)重难(nan)点(dian)项目(mu),采取了(le)监理(li)机器人应用;主要原材料质(zhi)量(liang)动态管控;严格执行首件制(zhi);BIM建(jian)模应用以及混凝(ning)土双(shuang)曲(qu)拱(gong)坝悬臂预(yu)制(zhi)模板和门槽云车一(yi)期直埋技术等措施,在(zai)提(ti)高监理(li)工(gong)(gong)(gong)作效率和确保(bao)工(gong)(gong)(gong)程(cheng)质(zhi)量(liang)前提(ti)下,大(da)幅度(du)降低了(le)施工(gong)(gong)(gong)安(an)(an)全(quan)风险,加快了(le)现场施工(gong)(gong)(gong)进(jin)度(du)。顺利(li)完成大(da)坝工(gong)(gong)(gong)程(cheng)合(he)同要求的安(an)(an)全(quan)、质(zhi)量(liang)及进(jin)度(du)目(mu)标(biao),达到月(yue)平均上升6.9米的全(quan)国(guo)先进(jin)水平,节(jie)约了(le)有效施工(gong)(gong)(gong)时间约270天(tian)。 工程建成后将成为陕西(xi)(xi)库容最大(da)、坝高(gao)(gao)最高(gao)(gao)的水利工程,50年内预(yu)计减少入渭(wei)泥沙(sha)(sha)30亿(yi)吨(dun)、入黄(huang)泥沙(sha)(sha)25亿(yi)吨(dun)。此外,通过拦蓄洪水、调(diao)水调(diao)沙(sha)(sha),可(ke)有效(xiao)提高(gao)(gao)泾(jing)河下游(you)防洪标准(zhun),保障西(xi)(xi)安(an)、咸阳、渭(wei)南3个市9个县(区)近150万人和80万亩耕(geng)地的防洪安(an)全,全面(mian)改(gai)善渭(wei)北“旱腰带”地区灌溉条件,大(da)幅改(gai)善泾(jing)渭(wei)流(liu)域生态环境,推(tui)动黄(huang)河流(liu)域生态保护和高(gao)(gao)质(zhi)量发(fa)展。 |
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