›› 2002, Vol. 23 ›› Issue (6): 787-791.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Test research on grouted density inspection of bolts using high frequency stress wave

ZHU Guo-wei, PENG Su-ping, WANG Huai-xiu   

  1. China University of Mining and Technologg, Beijing 100083, China
  • Received:2002-02-22 Online:2002-12-10 Published:2016-09-04

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Abstract: A similarity model is designed according to the type of bolts commonly used in coal mines and their grouted situation. To send out high frequency stress wave and meanwhile receive it on the top of bolt, an acceleration sensor with spring striking pin is invented. It is proved that the bolted length can be inspected accurately and the quality of a bolt can be evaluated by using the non-destructive inspection technique of high frequency stress wave. The rule to distinguish whether the quality of a kind of bolts is eligibility can also be found through express inspecting and drawing at random. It is confirmed by field tests that this method is economical and practical.

Key words: high frequency stress wave, sensor with spring striking pin, non-destructive inspection, grouted density

CLC Number: 

  • P631
  • Please send e-mail to pingzhou3@126.com if you would like to read full paper in English for free. Parts of our published papers have English translations.
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