免费菠萝视频app下载

    12月19日，白鶴(he)灘泄(xie)(xie)洪洞(dong)(dong)主體(ti)工程完工。據悉，該水電(dian)站共布置(zhi)三(san)條(tiao)無(wu)壓泄(xie)(xie)洪洞(dong)(dong)，是(shi)目前世(shi)界最大的無(wu)壓泄(xie)(xie)洪洞(dong)(dong)群。每條(tiao)泄(xie)(xie)洪洞(dong)(dong)由進水塔(ta)、無(wu)壓洞(dong)(dong)身段（上平段及龍(long)落(luo)尾(wei)）、出(chu)口挑流鼻(bi)坎及通風補氣(qi)系統組成。三(san)條(tiao)泄(xie)(xie)洪洞(dong)(dong)最大泄(xie)(xie)水量約每秒1.2萬立(li)方(fang)米，只需18分鐘就能灌(guan)滿整個西湖，流速(su)更是(shi)達到每秒47米，在泄(xie)(xie)洪設施建造(zao)史上位列前茅。

12月19日，白鶴灘泄洪洞主體工程完工儀式現場   

泄(xie)(xie)洪(hong)洞(dong)(dong)(dong)是水電(dian)工(gong)(gong)程中承擔泄(xie)(xie)洪(hong)任務的(de)建筑物。受高速水流(liu)空化、氣蝕影(ying)響，泄(xie)(xie)洪(hong)建筑物是電(dian)站運行期(qi)間最易出現(xian)(xian)破(po)壞的(de)工(gong)(gong)程部位，多年來行業內(nei)一(yi)直在(zai)探(tan)索水工(gong)(gong)隧洞(dong)(dong)(dong)高質量混凝(ning)土(tu)(tu)襯(chen)砌的(de)可能(neng)，卻始終未能(neng)取(qu)得(de)突(tu)破(po)。白(bai)鶴(he)(he)灘水電(dian)站泄(xie)(xie)洪(hong)洞(dong)(dong)(dong)工(gong)(gong)程首次實(shi)現(xian)(xian)全過(guo)流(liu)面(mian)澆筑低坍落度混凝(ning)土(tu)(tu)，并研發基于薄壁(bi)結構襯(chen)砌混凝(ning)土(tu)(tu)的(de)智(zhi)能(neng)溫(wen)控技術，解決了(le)(le)襯(chen)砌混凝(ning)土(tu)(tu)“無(wu)襯(chen)不(bu)裂”的(de)世(shi)界(jie)難題，發明“施工(gong)(gong)縫(feng)無(wu)縫(feng)銜接(jie)工(gong)(gong)藝(yi)”等一(yi)系列(lie)創新工(gong)(gong)藝(yi)，徹底解決了(le)(le)襯(chen)砌混凝(ning)土(tu)(tu)施工(gong)(gong)質量頑疾，過(guo)流(liu)面(mian)達到了(le)(le)2米靠尺檢查不(bu)平(ping)整(zheng)度小于3毫米的(de)標準，實(shi)現(xian)(xian)了(le)(le)體型精(jing)準、平(ping)整(zheng)光滑(hua)、無(wu)缺(que)陷(xian)，養護(hu)狀態下呈(cheng)現(xian)(xian)鏡面(mian)映射效果，在(zai)業界(jie)被譽為(wei)“鏡面(mian)混凝(ning)土(tu)(tu)”，確(que)保(bao)了(le)(le)泄(xie)(xie)洪(hong)建筑物運行期(qi)安全，成為(wei)白(bai)鶴(he)(he)灘水電(dian)站世(shi)界(jie)一(yi)流(liu)精(jing)品工(gong)(gong)程的(de)一(yi)張(zhang)名片。

泄洪洞進水口

白鶴灘(tan)泄洪(hong)洞(dong)工(gong)(gong)程(cheng)(cheng)(cheng)主體(ti)工(gong)(gong)程(cheng)(cheng)(cheng)順(shun)利完工(gong)(gong)，凝結(jie)著所有參建者(zhe)的(de)智慧(hui)和(he)汗水。以(yi)泄洪(hong)洞(dong)龍落尾(wei)段為例(li)，在短短的(de)400米范圍內(nei)垂直落差達到(dao)90米，并(bing)包括三種體(ti)型、四種襯(chen)砌(qi)斷面，最大坡度(du)達到(dao)23°，在如此高難度(du)的(de)工(gong)(gong)程(cheng)(cheng)(cheng)部位澆筑(zhu)低坍(tan)落度(du)混(hun)(hun)凝土(tu)(tu)在業內(nei)尚無先例(li)。參建各(ge)方成(cheng)(cheng)(cheng)立(li)“黨員(yuan)攻關(guan)小組”積極(ji)開展技術創新，自主研(yan)發(fa)大坡度(du)重載自動化運料系(xi)統(tong)(tong)和(he)大坡度(du)曲面底板常態混(hun)(hun)凝土(tu)(tu)成(cheng)(cheng)(cheng)套(tao)施工(gong)(gong)裝備(bei)，與之前已研(yan)制成(cheng)(cheng)(cheng)功并(bing)投入使用的(de)高邊墻低坍(tan)落度(du)上料系(xi)統(tong)(tong)、水平旋(xuan)轉布料系(xi)統(tong)(tong)，共同構成(cheng)(cheng)(cheng)了巨(ju)型泄洪(hong)洞(dong)全過流面低坍(tan)落度(du)混(hun)(hun)凝土(tu)(tu)施工(gong)(gong)系(xi)列化裝備(bei)，為我國水電(dian)工(gong)(gong)程(cheng)(cheng)(cheng)裝備(bei)制造帶來重大革新。

白(bai)鶴灘(tan)水(shui)(shui)(shui)電站泄洪洞工程的完工，是行業內首次實現(xian)水(shui)(shui)(shui)工隧洞襯砌混凝土的無缺陷建(jian)(jian)造(zao)，提高了(le)襯砌混凝土質量(liang)標準。建(jian)(jian)造(zao)過程中各項(xiang)技術均達到世(shi)界領先水(shui)(shui)(shui)平，再(zai)一(yi)次為填(tian)補世(shi)界水(shui)(shui)(shui)電建(jian)(jian)設技術空(kong)白(bai)提供了(le)中國智(zhi)慧。

【責任(ren)編輯：李沐(mu)霖】