【摘要】：重慶軌道交通十號線紅土地站雙洞隧道5.06m小間距下穿軌道六號線,為保證六號線的結(jié)構(gòu)安全和正常運行,采用銑挖機開挖與爆破開挖相結(jié)合的施工方法。有限元爆破動力分析表明,與全部采用爆破開挖相比,六號線結(jié)構(gòu)豎向最大振動速度由4.74cm/s減小到0.941cm/s,滿足軌道安全需要。施工中監(jiān)測數(shù)據(jù)證明了數(shù)值分析結(jié)果具有較高的可靠性。本文提出采用銑挖機開挖與爆破開挖相結(jié)合的施工方法,既能保證施工進度,又滿足安全穩(wěn)定需要,值得在同類工程施工中推廣應(yīng)用。
[Abstract]:In order to ensure the safety and normal operation of the No.6 railway line, a construction method combining Milling Excavation with blasting excavation is adopted. The finite element blasting dynamic analysis shows that the maximum vertical vibration of the No.6 railway line is larger than that of the blasting excavation. The speed decreases from 4.74 cm/s to 0.941 cm/s, which meets the safety requirements of the track. The monitoring data during the construction prove that the numerical analysis results are reliable. This paper presents a construction method combining milling and excavating with blasting excavation, which can not only ensure the construction progress, but also meet the safety and stability requirements, and is worth popularizing in the construction of similar projects. Use.
【作者單位】： 中鐵六局集團有限公司;重慶科技學院;
【分類號】：U231.3;U455.4

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