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中鐵十二局二公司北京南水北調配套工程河西支線工程破國內盾構掘進新紀錄

2019年12月12日文章來源:原創文章

2019.10

北京訊(李佳佳 吉尚峰)1011日,二公司北京南水北調配套工程河西支線工程施工第八標段創造了單班日掘進19環、單日掘進36環的國內同類型(3.8米直徑)土壓平衡盾構機施工新紀錄。該標段當前施工盾構區間長1819.55米,需穿越北京市最差盾構施工地層(最大卵石粒徑52公分且卵石含量高),施工難度大。圖為盾構機吊裝作業。

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