一种三维隧道地质超前预报新方法的研究与应用  

The Applied Research of 3D Tunnel Geological Prediction Method

作　　者：王统金 王运生[2] 唐平祥 赵栋琪 赵灿元 

机构地区：[1]云南航天工程物探检测股份有限公司,云南昆明650217 [2]郑州大学水利与环境学院,河南郑州450001 [3]云南大丽高速公路建设指挥部,云南大理675600

出　　处：《工程地球物理学报》2014年第2期147-150,共4页Chinese Journal of Engineering Geophysics

基　　金：云南省交通科技重点项目(编号:云交科2010(A)18-a)资助

摘　　要：目前,各类隧道地质超前预报技术在隧道开挖过程中发挥着巨大作用,首先简要阐述了隧道地质超前预报发展概况及存在问题,然后基于自主研发的AGI-T3三维隧道地质超前预报系统,较详细地介绍了隧道地质超前预报三维观测系统设计方法;根据掌子面前方反射波信号特征(负速度),应用"F-K"二维速度滤波方法提高信噪比;基于地震波共反射面元(CRS)叠加和偏移成像原理实现隧道地质三维成像。最后通过数值模型和工程实例,分析验证了仪器信号采集和成像方法的正确性和实用性,为隧道的超前探测和预报工作开辟了一条全新、有效、简洁高效的途径。At present, various types of tunnel geological prediction technology playa huge role in tunnel excavation. This paper first briefly describes the tunnel geological prediction and problems, and then based on independent research and development of AGI - T3 three - dimensional tunnel geological advanced prediction system, the tunnel geological prediction three- dimensional geometry design is introduced in detail. According to the face reflected wave signal characteristics （negative velocity）, ＂F- K＂ the 2D speed filtering method is applied to improve the signal- to- noise ratio. Based on seismic waves reflecting surface element （CRS） and migration imaging principle, tunnel geological three- dimensional imaging is realized. Finally, through numerical models and engineering examples, the cor rectness and practicability of the instrument signal collection and imaging method are ana lyzed and verified, which provides a new, effective and simple method for the tunnel ad vanced detection and prediction.

关 键 词：隧道地质超前预报 观测系统设计 “F-K”二维滤波 三维成像 

分 类 号：P631.4[天文地球—地质矿产勘探]