›› 2008, Vol. 29 ›› Issue (5): 1361-1366.

• Geotechnical Engineering • Previous Articles     Next Articles

Research on prestressed cable parameters optimization designs and its application to Jinchuan Mine No.2

YANG Zhi-qiang1, GAO Qian1, 2, WANG Zheng-hui3   

  1. 1. University of Science and Technology of Beijing, Beijing 100083, China; 2. Key Laboratory of Ministry of Education on High Efficient and safety Mining for Metal Mines, University of Science and Technology of Beijing, Beijing 100083, China; 3. Mining Institute of Jinchuan Group Ltd., Jinchang 737100, China
  • Received:2006-09-25 Online:2008-05-10 Published:2013-07-24

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Abstract: Considering the support difficulty of the roadways with high stress zone in Jinchuan Mine No.2, a prestressed cable support technique is studied and adopted at 1 178 m sublevel in Mine No.2. The prime support parameters were first given with the help of engineering experiences. Then orthogonal numerical experimentation regression analyses were executed. The results show that pretressed cable with the length of 6.5 m should be used in the Ⅲ or stronger grade (with RMR of 40) surrounding rock or the tunnel affected by the mining lightly, as for the tunnel suffered from the mining seriously, cable supporting with length of 6.5 m can make the safety coefficients reach 1.28, therefore, cable with length of 5.5－6.5 m can meet the stability need of sublevel tunnel.

Key words: stope tunnel, long cable supporting, numerical stimulation, optimization design

CLC Number: 

  • TD 35
  • 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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