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| A DISCUSSION ON THE NONDESTRUCTIVE DETECTION TECHNIQUE FOR QUALITIES OF ROOFBOLTS AND ANCHORS IN TUNNELS |
| HUANG Hua-lin1, ZHU Zi-qiang1, YANG Tian-chun2, WANG Qi-ren3, LU Guang-yin1 |
1. School of Info and Physics Engineering, Central South University, Changsha 410083, China;
2. School of Civil Engineering, Hunan University, Changsha 410082, China;
3. School of Civil Engineering, Hunan University of Science and Technology, Xiangtan 411201, China |
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Abstract Adopting the acoustic wave detection device and applying the principle of reflection energy and phase variation of the audio-frequency stress wave at different wave impedance surfaces, the authors made nondestructive tests for qualities of roofbolts and anchors in tunnels, and investigated the detection technique. The results show that the adoption of the stress wave to the nondestructive detection of roofbolt and anchor qualities has enriched the techniques for detection of anchor qualities in tunnel wall rocks, and can better guarantee the quality of tunnel engineering construction.
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Received: 11 May 2005
Published: 24 December 2005
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