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介绍了一种新型的隧道施工超前地质预报系统USP,它利用地震波角度偏移技术,采用空间多分量、多波进行超前地质预报;它具有三维空间排布、多达256通道的数据采集;通过对三维数据结构的一系列处理分析形成三维空间地震波的各种图形图像,最终能探测灾害体的位置与形状参数,从而实现对隧道及地下工程前方地质情况的判译、预报。文中结合108国道南村隧道施工多次范围重叠预报说明该方法的预报效果,并进行开挖跟踪验证了方法的可靠性。
A new type of advanced geological prediction system for tunnel construction, USP, is introduced, which uses seismic multi-component and multi-wave for advanced geological prediction using seismic wave angle migration technology. It has three-dimensional spatial arrangement and data acquisition of up to 256 channels. A series of processing of three-dimensional data structure Analysis and formation of a variety of three-dimensional seismic image of the Earth’s seismic wave can eventually detect the location and shape parameters in order to achieve the tunnel and underground engineering in front of the geological conditions of the sentence, forecast. In this paper, the prediction of this method is demonstrated by the overlap prediction of Nankun tunnel construction in 108 National Road, and the reliability of the method is verified by excavation tracking.