沈陽地鐵集團有限公司 -
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沈陽地鐵3號線南文區間實現雙線貫通

 

  4月19日,隨著“追夢號”盾構機破土而出,由中鐵十五局城軌公司承建的沈陽地鐵3號線南塔站至文富路站盾構區間實現雙線貫通。

  南-文區間長約733米,其中盾構段長約551米,礦山段長約183米,區間線間距12-17米,線路縱斷面呈“V”字坡形,最大坡度25‰。該區間屬于長距離小轉彎半徑,隧道易整體偏移且軸線控制難度大,蛇形糾偏工作量大,在掘進的前390環需連續下穿多個風險源,對掘進的精準性要求極高,施工風險難度大。

  施工前,沈陽地鐵集團與項目部緊盯一線,提前籌劃,精確分析工程重難點,針對施工過程中存在的刀盤結泥餅、地質狀況復雜、盾構施工噴涌、下穿多處風險源等問題制定了詳細的施工方案和技術措施。在施工過程中,始終堅持領導帶班制度,落實班前教育,加強技術培訓,確保盾構施工更加安全,管片拼裝更加規范化、標準化。經過不懈努力,項目先后克服了小空間、超低溫、小曲線大坡度等始發難題,實現了洞門無滲水、地面及周邊環境安全的目標,順利實現區間雙線貫通。

  

沈陽地鐵3號線南塔站至文富路站盾構區間實現雙線貫通

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