花岗岩风化残留体会给城市地铁盾构施工带来极大的风险，为保证盾构在存在残留体的地层中顺利掘进，需提前探测出其在隧道沿线的分布情况。较之传统的钻探探测方法，地震法探测具有环境干扰小、效率高、覆盖范围广且成本低廉的优势。文章针对南方地区花岗岩地层特征及城区环境特点，对目前常用地震探测方法的适用性进行了试验研究，认为浅层地震反射法对于孤石探测是行之有效的，采用横波探测可以提高探测准确度。所得出的结论可供以后孤石探测工作参考借鉴。

Weathered granite residual usually causes enormous risks to the shield tunneling in urban Metro construction. Therefore, detection must be carried out in advance along the tunnel alignment, so as to ensure the successful driving of shield through the formation with granite boulders. Compared to the traditional drilling method, seismic method has obvious advantages such as less environmental interference, high efficiency, wide coverage and low cost. In the paper, the applicability of common seismic detection methods is studied on the basis of the characteristics of granite formation and urban environment in south China. Conclusion is drawn that the shallow seismic reflection method is effective in boulder detection and that the detection accuracy can be improved by Swave detection. The paper can provide reference for the detection of boulders in future works.