文章來(lai)源：中(zhong)國冶(ye)金科工集團(tuan)有限公司 發布時間：2013-08-13
8月10日上午10時18分，由中國中冶所屬中國華冶集團北票分公司承建的凌鋼保國鐵礦鐵蛋山礦區副井技改工程竣工投產，比合同工期提前143天，技改工程達產后年出礦量將由過去100萬噸/年增強到180萬噸/年。
該(gai)工(gong)(gong)(gong)程(cheng)是(shi)凌(ling)鋼(gang)擴大(da)原料產能的(de)重點項(xiang)目，施(shi)工(gong)(gong)(gong)難(nan)度大(da)，工(gong)(gong)(gong)程(cheng)構成(cheng)(cheng)(cheng)復(fu)雜，由600多米(mi)(mi)(mi)(mi)(mi)深的(de)副(fu)(fu)井(jing)和風井(jing)、600多米(mi)(mi)(mi)(mi)(mi)斜坡道(dao)、14條(tiao)75米(mi)(mi)(mi)(mi)(mi)天溜井(jing)、一條(tiao)90多米(mi)(mi)(mi)(mi)(mi)的(de)電梯(ti)井(jing)、5800米(mi)(mi)(mi)(mi)(mi)巷(xiang)道(dao)組(zu)成(cheng)(cheng)(cheng)。尤(you)其(qi)是(shi)由-40水平斜坡道(dao)向副(fu)(fu)井(jing)貫(guan)通的(de)1101米(mi)(mi)(mi)(mi)(mi)的(de)獨頭巷(xiang)道(dao)，施(shi)工(gong)(gong)(gong)難(nan)度極其(qi)艱苦。自2010年6月中(zhong)國華(hua)冶(ye)集團北票(piao)分公司(si)中(zhong)標承建鐵蛋山礦(kuang)區(qu)技改工(gong)(gong)(gong)程(cheng)后，精心組(zu)織，科學(xue)管理(li)，創造(zao)出全國冶(ye)金礦(kuang)山豎(shu)井(jing)月成(cheng)(cheng)(cheng)井(jing)205.6米(mi)(mi)(mi)(mi)(mi)的(de)新紀(ji)錄，成(cheng)(cheng)(cheng)為同(tong)行業(ye)對(dui)標學(xue)習的(de)榜樣。整(zheng)個工(gong)(gong)(gong)程(cheng)僅用了26個月，比(bi)合(he)同(tong)工(gong)(gong)(gong)期提(ti)前143天，經業(ye)主和工(gong)(gong)(gong)程(cheng)監理(li)驗收工(gong)(gong)(gong)程(cheng)質量合(he)格(ge)率100%，優(you)良率達(da)90%以(yi)上，安全無事故。