超前地质预报技术在铁路隧道开挖工程中的应用研究  

Application Research of Advanced Geological Prediction Technology in Railway Tunnel Excavation Engineering

作　　者：马建平 MA Jianping(Tianjin China Railway Engineering Testing Co.,Ltd.,Tianjin 300380,China)

机构地区：[1]天津中铁工程检测有限责任公司,天津300380

出　　处：《桂林航天工业学院学报》2025年第1期122-128,共7页Journal of Guilin University of Aerospace Technology

摘　　要：铁路隧道为地下线状建筑结构,围岩情况复杂,盲目掘进易导致地质灾害或安全事故,阻碍施工进度。为解决该问题,研究超前地质预报(TSP)技术在铁路隧道开挖工程中的应用方法。将TSP技术应用在某铁路隧道开挖工程中,采集该隧道TSP现场数据并设置相关参数计算,利用软件对所采集数据进行处理,通过完成处理的TSP数据计算岩体波速、泊松比、动弹性模量等参数,依据计算出的岩体纵波速度确定隧道围岩等级,依据预报成果解译原则对TSP预报成果进行分析。实验结果表明,该技术在反射波提取时的最大增益与损耗系数取值为18时,TSP预报效果最好。按照此应用方法,该技术具有较为准确的预报结果。Railway tunnels are underground linear building structures with complex surrounding rock conditions.Blind excavation can easily lead to geological disasters or safety accidents,hindering construction progress.Therefore,the application method of tunnel seismic prediction(TSP)technology in railway tunnel excavation engineering is studied.Applying TSP technology to a railway tunnel excavation project,collecting on-site TSP data and setting relevant parameter calculations,processing the collected data using software,calculating rock wave velocity,Poisson's ratio,dynamic elastic modulus and other parameters based on the processed TSP data,determining the tunnel surrounding rock grade based on the calculated longitudinal wave velocity of the rock mass,and analyzing the TSP prediction results based on the interpretation principle of the prediction results.The experimental results show that the TSP prediction effect is best when the maximum gain and loss coefficient of the technology in reflected wave extraction are set to 18;According to the application method in this article,this technology has relatively accurate prediction results.

关 键 词：铁路隧道开挖 TSP技术 地震反射波 掌子面 隧道围岩 

分 类 号：U456[建筑科学—桥梁与隧道工程]