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for (var i = 0,len = adKeys.length; i 原標(biāo)題:西渝高鐵正線最長隧道掘進(jìn)突破萬米 12月10日,由西成客專陜西公司建設(shè)、中鐵十四局等單位承建的西渝高鐵余家梁隧道正洞累計掘進(jìn)里程超過1萬米,隧道建設(shè)進(jìn)入最后沖刺階段。 西渝高鐵北起西安,南至重慶,正線全長約739公里,設(shè)計時速350公里,是我國首條橫穿大巴山腹地的鐵路,分西安至安康、安康至重慶兩段建設(shè)。其中,余家梁隧道位于安康市嵐皋縣境內(nèi),全長約14.5公里,是西渝高鐵正線最長隧道。該隧道地處秦巴山區(qū),圍巖破碎、地質(zhì)復(fù)雜、涌水量大,穿越多條斷層破碎帶,施工難度大,安全風(fēng)險高,被列為二級高風(fēng)險隧道,是西渝高鐵全線重難點(diǎn)控制性工程。 施工過程中,項(xiàng)目團(tuán)隊(duì)嚴(yán)格執(zhí)行“短進(jìn)尺、弱爆破、強(qiáng)支護(hù)、勤量測、及時襯砌”方針,確保山嶺隧道施工安全、有序推進(jìn)。為提升施工質(zhì)量,技術(shù)團(tuán)隊(duì)推廣應(yīng)用多項(xiàng)“四小四新”技術(shù),配置多功能開挖臺車,采用拱腳連接保護(hù)工裝、拱架垂直度控制裝置等工藝工裝。此外,項(xiàng)目部創(chuàng)新實(shí)施“雙洞長”負(fù)責(zé)制,設(shè)立工點(diǎn)管理小組直管現(xiàn)場,24小時輪班盯控現(xiàn)場施工作業(yè),提高施工效率。 “我們將以‘穿透式管理+網(wǎng)格化監(jiān)督’相結(jié)合的方式,不斷優(yōu)化資源配置流程,常態(tài)化加強(qiáng)工序管控,提升安全管理、質(zhì)量管理的信息化、智能化水平,確保高鐵建設(shè)目標(biāo)順利完成。”中鐵十四局項(xiàng)目負(fù)責(zé)人趙亞龍說。 西渝高鐵是“八縱八橫”高鐵通道網(wǎng)中京昆、包(銀)海通道的重要組成部分。建成通車后,西安至重慶的鐵路運(yùn)行時間將從現(xiàn)在的6小時左右縮短至2.5小時左右,進(jìn)一步完善中西部地區(qū)鐵路路網(wǎng)結(jié)構(gòu),促進(jìn)沿線經(jīng)濟(jì)社會發(fā)展。

西渝高鐵正線最長隧道掘進(jìn)突破萬米
