文章來(lai)源：中國冶(ye)金科(ke)工集團有限公司 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。
該工(gong)(gong)(gong)程(cheng)(cheng)是凌(ling)鋼(gang)擴(kuo)大原料(liao)產能的(de)(de)重點項目，施(shi)工(gong)(gong)(gong)難度大，工(gong)(gong)(gong)程(cheng)(cheng)構成(cheng)復雜，由(you)600多米深的(de)(de)副井(jing)和(he)風井(jing)、600多米斜坡道(dao)(dao)、14條(tiao)75米天(tian)溜井(jing)、一條(tiao)90多米的(de)(de)電梯(ti)井(jing)、5800米巷道(dao)(dao)組成(cheng)。尤(you)其(qi)是由(you)-40水(shui)平斜坡道(dao)(dao)向(xiang)副井(jing)貫通的(de)(de)1101米的(de)(de)獨頭(tou)巷道(dao)(dao)，施(shi)工(gong)(gong)(gong)難度極其(qi)艱(jian)苦。自2010年6月中(zhong)國華冶集團北票分(fen)公司中(zhong)標承建鐵蛋山(shan)礦區技(ji)改工(gong)(gong)(gong)程(cheng)(cheng)后，精心組織，科學管理，創造出全(quan)國冶金(jin)礦山(shan)豎井(jing)月成(cheng)井(jing)205.6米的(de)(de)新紀錄，成(cheng)為同(tong)行(xing)業(ye)對標學習(xi)的(de)(de)榜樣。整個工(gong)(gong)(gong)程(cheng)(cheng)僅用了26個月，比合(he)同(tong)工(gong)(gong)(gong)期提前143天(tian)，經業(ye)主和(he)工(gong)(gong)(gong)程(cheng)(cheng)監(jian)理驗收工(gong)(gong)(gong)程(cheng)(cheng)質量合(he)格率(lv)100%，優良率(lv)達90%以上，安全(quan)無事(shi)故。