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结合双泉水库塑性混凝土防渗墙工程,采用探地雷达法和垂直反射法相结合的方式开展防渗墙无损检测。通过对两种方法检测结果的分析,认为垂直反射法比较适合对塑性混凝土防渗墙的连续性和墙深进行检测,对防渗墙中的缺陷尤其是浅层的缺陷能定性地反映出来;探地雷达法能测出防渗墙浅层的缺陷,而对于防渗墙深层的缺陷,只有当缺陷足够大时才能测到。
Combined with plastic concrete impermeable wall project of Shuangquan Reservoir, non-destructive testing of impervious wall is carried out by a combination of GPR method and vertical reflection method. Through the analysis of the test results of the two methods, it is considered that the vertical reflection method is more suitable for the detection of the continuity and wall depth of the plastic concrete cutoff wall, which can qualitatively reflect the defects in the cut - off wall, especially the shallow ones. Ground penetrating radar method can detect the shallow imperfection wall impermeable wall, and impermeable wall deep defects, only when the defect is large enough to be measured.