borehole survey

Numerical calculation of borehole electrical survey in layered media and its applications

层状介质井中电测数值计算及其应用研究

Digital Simulation of Gyrocompass Borehole Survey System

陀螺罗经测井系统数字仿真

In addition, it is proven that the block selection is such an efficient method that it can provide more detailed data for the next borehole survey.

实践证明，岩块筛选可为岩块的钻孔研究提供更详细的基础地质资料，在处置库的选址过程中起到事半功倍的作用。

Borehole radar survey proves to be an effective method to detect the fracture extension and rock integration of granite, and is of important significance in site characterization for high-level radioactive waste repository.

北山1号孔钻孔雷达测试的实践表明：钻孔雷达测量是了解岩体内部裂隙延伸和岩体完整性的有效手段，对高放废物处置库场址评价有重要意义。

Over-burden low resistivity layers and sandwich low resistivity layers have large influence on borehole electric survey results.

低阻覆盖层和中间低阻层对井中电测影响很大，厚层覆盖区对地-井方式观测不利；