关键词: 注浆锚杆, 锚固质量, 小波分析, 无损检测

Abstract: Grouting anchoring quality fast, accurately and extensively. Based on the law of stress wave transmission and reflection in the anchorage bolt grouting, a nondestructive experimental research focused on the grouting anchor length and the solidity of the grouting quality was conducted. Furthermore, the theory of wavelet transform is used to analysis the test signals. The study show that grouting anchor free length could be accurately detected through the analysis of the stress wave signal by using of the low pass filter in the wavelet toolbox, the grouting anchorage length, defection length and specific location of the anchoring section can be accurately detected through the analysis of the stress wave signal by using of the high pass filter in the wavelet toolbox. This research results can offer an experiment foundation for the further study of grouting anchoring quality based on the nondestructive methods.