Paper Title:
Stress Evolution and Deformation Control Technology for Deep Mining Influenced Roadway
  Abstract

In order to effectively control deep roadway under mining influence, based on the typical engineering geological conditions of Dingji coalmine in Huainan mining area, we researched on the laws of stress evolution and failure mechanism of roadway influenced by working face advancing by using numerical simulation and applying field test. The results showed that the surrounding rock stress of roadway ribs increased gradually with face advancing, vertical stress peak transfer to in-depth of roadway surrounding rock, the trend of roadway surface displacement variation consistent with corresponding stress variation. An appropriate coal pillar size (105 m) was proposed. We put forward the basic ideas for surrounding rock controlling and surrounding rock reinforce technology, namely U-steel support back grouting and bolt-cable cooperative supporting. By roadway deformation, roof layer separation and borehole detecting, we found out that displacement of roadway ribs was less than 250 mm, subsidence of roof was less than 110 mm, and the roadway deformation has been effectively controlled.

  Info
Periodical
Edited by
Xuejun Zhou
Pages
137-145
DOI
10.4028/www.scientific.net/AMM.90-93.137
Citation
J. G. Kan, N. Zhang, H. W. Zhang, Z. Y. Zhang, G. Y. Si, "Stress Evolution and Deformation Control Technology for Deep Mining Influenced Roadway", Applied Mechanics and Materials, Vols. 90-93, pp. 137-145, 2011
Online since
September 2011
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Price
$32.00
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