COAL ENGINEERING ›› 2015, Vol. 47 ›› Issue (2): 44-46.doi: 10.11799/ce201502014

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Reinforcement Technology of Advance Support in Mining Roadways of Three-soft Coal Seam

  

  • Received:2013-12-30 Revised:2014-03-03 Online:2015-02-10 Published:2015-02-15

Abstract: Abstract:In allusion to the practical situation that the mine strata pressure and surrounding rock deformation are serious in mining roadways of three-soft coal seam in Zheng Zhou mining area, repeatedly repair is required to meet the request of production safety. This paper proposes the principle that releasing the load firstly and than implementing secondary advance reinforcement. This paper systematically elaborates three types of reinforcement technology for mining roadways of U-steel,which is three beems reinforcement,assist beem reinforcement and I-beem combined support method,their advantages and disadvantages as well as applicable conditions are discussed. Practice shows that:the application of advance support and reinforcement technology can reduce the labor intensity and repair investment,the safety of product propress is ensured as well.

Key words: Keywords: advance support, mining roadway, U-steel support, Zheng Zhou mining area