›› 2000, Vol. 21 ›› Issue (1): 60-63.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Experiment study on the coefficients of friction and inserting of main roof block corner

Huang Qingxiang , Shi Pingwu ； Qian Minggao   

  1. Xian University of Science and Technology, Xian 710054, China) ( China University of Mining and Technology, Xuzhou 221008, China
  • Received:1999-03-21 Online:2000-03-20 Published:2016-11-21

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Abstract: Through tests on rock block similation of simularity of rock material and finite element calculation, the characteristics of friction and squeezing at main roof block corner are studied . It is found that the friction angle of main roof block corner is the residual friction angle, and the coefficient of friction is determined as 0. 5. Weak planes have an obvious and regular effect on the squeezing strength of main roof block corner, and the coefficient of roof block corner is determined as 0. 4 .

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  • TV 223 . 1
  • 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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