›› 2012, Vol. 33 ›› Issue (S2): 257-262.

• Geotechnical Engineering • Previous Articles     Next Articles

Experimental study of bolt and cable truss system for large cross-section coal roadways under high stress

YAN Hong, HE Fu-lian, XU Teng-fei, JIANG Hong-jun, GAO Sheng   

  1. School of Resources and Safety Engineering, China University of Mining and Technology (Beijing), Beijing 100083, China
  • Received:2012-07-16 Online:2012-11-22 Published:2012-12-11

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Abstract: The surrounding rock controlling technology of large cross-section coal roadways under high stress in tectonic region is one of the problems to be desiderated to solve in coal mines. Aiming at the large deformation of the typical complex coal roadway in Xinsan coal mine of Fengfeng Company, in combination with the field observation and numerical simulation analysis integrated the results of large-section coal roadway under high stress deformation and failure characteristics, and then a type of surrounding rock controlling system called high strength bolt and cable truss is proposed on the basis of the core structure “cable and arch”. The basic structure, design process and prestress distribution characters of roof strata with the controlling system are analyzed. A field test is done on replacement coal roadway for filling waste gangue. Research results show that supporting structures of the new style system are stable; and the surrounding rock of the roadway is controlled well, which has theoretical and practical value to the supporting technology of analogous complex roadways.

Key words: high stress, large cross-section coal roadway, compound roof, truss system

CLC Number: 

  • TD53
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