Study on Optimal Roadway Bolt Supporting Scheme with Easy-Breaking Roof

Feng Gao; Qing Guo Huang; Gui Ling Liu

doi:10.4028/www.scientific.net/AMR.524-527.705

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Some Comments on “Unloading Rock Mechanics”
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Study on Discrimination and Parameter Selection of Weighted Forecasting Model in Safety System
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Study on Optimal Roadway Bolt Supporting Scheme with Easy-Breaking Roof
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Study on Technology of Simultaneous Coal Mining and Gas Drainage of Thin Coal Seam in Laoyingyan Mine
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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 524-527Study on Optimal Roadway Bolt Supporting Scheme...

Study on Optimal Roadway Bolt Supporting Scheme with Easy-Breaking Roof

Abstract:

The roadway bolt supporting with easy-breaking roof is a complex systematic problem, and the success or failure of roadway bolt supporting is determined by pre-stress level in some sense. To well recognize the bolt supporting effect under different pre-stress level, the laneway which has cracky roof is taken to systematically analysis the changing situation of roadway’s stress and deformation by using 2-dimension finite difference code -FLAC2D.The theoretical analysis and practical observation results show that high pre-stress scheme is the best way to improve the roadway surrounding rock strength and to control the cracky roof roadway’s deformation. It has some references to engineering design, construction and maintenance for similar soft rock mines.

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Periodical:

Advanced Materials Research (Volumes 524-527)

Pages:

705-708

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.524-527.705

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Online since:

May 2012

Authors:

Feng Gao, Qing Guo Huang, Gui Ling Liu

Keywords:

Bolt Supporting, FLAC^2D, Numerical Simulation, Pre-Stress Level

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References

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