基于地震波反射法的盾构施工超前地质预报初探

发布时间：2018-01-29 10:54

本文关键词： 盾构施工超前地质预报地震波反射法正演模拟　出处：《隧道建设》2017年08期 　论文类型：期刊论文

【摘要】：由于北京地铁八号线三期工程六营门站—五福堂站盾构段区间特殊的工程环境及工艺,使得传统的预报方法难以开展实施。以盾构刀盘切削震动为震源,以地震波反射法为原理进行地震波相位特性和振幅特性的解析,提出了基于地震波反射法的盾构施工超前地质预报方法,并进行超前预报及跟踪对比工作。现场试验表明:基于地震波反射法的盾构施工超前地质预报系统布设简单、操作方便,且不影响作业面推进;基于地震波反射法的盾构施工超前地质预报系统能较好地反映地下介质体的形状与轮廓,图像判译结果基本与地质资料吻合,与开挖跟踪结果一致。
[Abstract]:Due to the special engineering environment and technology in the shield section of Liuyingmen station-Wufutang station of the third phase of Beijing Metro Line 8, the traditional forecasting method is difficult to carry out. Based on seismic wave reflection method, the phase and amplitude characteristics of seismic wave are analyzed, and the advanced geological prediction method for shield construction based on seismic wave reflection method is proposed. Field tests show that the advanced geological prediction system for shield construction based on seismic wave reflection method is simple, easy to operate and does not affect the operation surface. The advanced geological prediction system for shield construction based on seismic wave reflection method can well reflect the shape and contour of underground media body, and the result of image interpretation is basically consistent with geological data and the result of excavation tracking.
【作者单位】：福州地铁集团有限公司;北京市市政工程研究院地下工程建设预报预警北京市重点实验室;
【分类号】：U452.11;U455.43
【正文快照】： 预报预警北京市重点实验室,北京100037)0引言我国已是世界上隧道修建规模和数量最大的国家[1],盾构施工以其自动化、效率高、成洞效果好等优点得到广泛的应用[2]。隧道盾构施工方法有一定的特殊性和复杂性,对不良地质状况非常敏感,如断层、溶洞、破碎岩体等在施工扰动下极有可

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