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China Railway No.8 Engineering Group's First Tunnel Cantilever Roadheader Shines at the Darui Project

2015-09-10 414 0人评论

　　为加快机械化作业，提高施工进度，9月1日，由中铁八局引进的首台EBZ220悬臂式隧道掘进机在大瑞项目部秀岭隧道入口平导段开始运行掘进，为大瑞隧道施工再添得力“干将”。

　　此次引进的EBZ220悬臂式掘进机具有连续掘进、无爆破震动的机动性，对围岩的扰动极小、截割效率高、机器稳定性好、操作与维护方便和运行安全可靠等优点，能够实现连续切割、装载、运输作业工作于一体，可有效解决岩层坚硬、开挖缓慢、工序衔接不紧凑等问题，较大地提高了隧道开挖进度。

　　据项目相关负责人介绍，大瑞铁路秀岭隧道长17623m，属特长铁路隧道，隧道内采用弹性支撑块式无碴轨道。隧道围岩类别主要为Ⅲ、Ⅳ、Ⅴ级，以Ⅳ、Ⅴ级围岩居多，设计采用进、出口双向掘进，于线路左侧30m处设贯通平导。隧道地质复杂，施工组织难度大、工程工期长，是本标段重点控制工程。按照当前施工进展情况预算，该设备每月可掘进120米左右，施工效率将在传统隧道施工技术的基础上提高1.5倍。

　　大瑞项目部通过运用新设备、改进施工工艺、优化施工工序等方式，不仅有效地提高了一公司的隧道施工水平，更为大瑞铁路秀岭隧道的如期贯通奠定了良好的基础。

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China Railway No.8 Engineering Group's First Tunnel Cantilever Roadheader Shines at the Darui Project

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China Railway No.8 Engineering Group's First Tunnel Cantilever Roadheader Shines at the Darui Project

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