Experimental study on non-destructive testing of rock bolts based on pseudo-random signal

摘要：

The quality of rock bolt anchoring is closely related to the stability and safety of underground engineering and slope protection. In this paper, nondestructive testing of rock bolts is proposed based on pseudo-random signal, owing to the deficiencies of the conventional detecting method of stress wave reflection. The characteristics of pseudo-random signal for non-destructive testing of rock bolts are introduced. And the rock bolts are tested in the experiment, the time of reflection wave is identified and the length of rock bolts is calculated through cross correlation analysis between the extracted wavelet signal and the test signal. It is proved that the testing results of non-destructive testing methods based on pseudo-random signal are of low deviation. The experiment has shown that nondestructive testing of rock bolts based on pseudorandom signal is feasible with high precision.

关键词： pseudo-random signal rock bolts non-destructive testing correlation analysis

作者: CHENG Jiu-long SUN Xiao-yun FENG Li YUAN Yong-bang

作者单位: State Key Laboratory of Coal Resources and Safe Mining, China University of Mining and Technology (B School of Electrical and Electronics Engineering, Shijiazhuang Tiedao University, Shijiazhuang 05004 Key Laboratory of Mine Disaster Prevention and Control, Shandong University of Science & Technology, State Key Laboratory of Coal Resources and Safe Mining, China University of Mining and Technology (B

会议类型: 国际会议

会议名称: The First International Symposium on Mine Safety Science and Engineering (首届矿山安全科学与工程学术会议)

会议地点: 北京

会议语种:英文

页码: 957-962

在线出版日期: 2011-10-27（万方平台首次上网日期，不代表论文的发表时间）