文(wen)章來源：中國(guo)鐵路(lu)工程總公司 發布時(shi)間(jian)：2012-12-06
近日，中鐵(tie)五(wu)局在承(cheng)建(jian)的青(qing)海省共和至(zhi)玉樹公(gong)路鄂拉(la)山隧(sui)道施(shi)(shi)工(gong)(gong)中，通(tong)過鋪設遮陽網和堆(dui)碼砂袋、采(cai)取(qu)自進式錨(mao)桿(gan)施(shi)(shi)鉆、采(cai)取(qu)地質鉆機套管跟進施(shi)(shi)鉆工(gong)(gong)藝(yi)、采(cai)取(qu)低溫早(zao)強混(hun)凝(ning)土(tu)(tu)噴護(hu)和模筑等4項技(ji)術成功破解(jie)了高(gao)原凍土(tu)(tu)施(shi)(shi)工(gong)(gong)難題，確保了高(gao)原凍土(tu)(tu)情況下的隧(sui)道施(shi)(shi)工(gong)(gong)安全。