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在岩溶的勘察中,利用钻孔地震CT技术的高分辨率,可有效地查清地下岩溶的发育及空间展布情况,用于指导拟建构(建)筑物后期的设计与施工,从而有效地避免岩溶对工程质量的影响,提高工作效率,节约成本。本文主要论述了钻孔地震CT技术的工作原理、观测系统设计、野外工作方法及几个重要参数的选择。结合工程的实际应用和详细分析,总结了钻孔地震CT技术的工作流程及其对岩溶探测的精度问题。
In the exploration of karst, using the high resolution of borehole seismic CT technology, the development and spatial distribution of underground karst can be identified effectively, so as to guide the design and construction of the proposed building To avoid the impact of karst on the quality of the project to improve work efficiency and cost savings. This paper mainly discusses the working principle, observation system design, field work method and several important parameters of borehole seismic CT technology. Combined with the practical application and detailed analysis of the project, the workflow of borehole seismic CT technology and its accuracy of karst detection are summarized.