Paper Title:
Optimization on Gateway Section of Soft Coal Seam and Hard Roof and Supporting Technology
  Abstract

Support invalidity of a roadway have a largely influence on production safety of coal mines, especially the soft coal roadway, which deforms heavily. To solve this problem, it began from the gateway section optimization, based on the actual geological condition of Chang-gouyu Mine. The computational model was established up to optimize tunnel shapes using FLAC3D. The scopes of plastic zone, stress field, displacement field were compared and analysed for different shapes of roadway. The irregular trapezoid section is adopted, then the bolt support parameters were designed and field application was done. By using the irregular trapezoid, the stress distribution around the roadway is improved and the deformation and plastic zone is decreased. Under the geological conditions of the soft coal seam and hard roof strata, the stability of roadway was effectively controlled by using optimized trapeziform cross-section and bolting support.

  Info
Periodical
Edited by
Xuejun Zhou
Pages
622-625
DOI
10.4028/www.scientific.net/AMM.90-93.622
Citation
L. Chen, C. W. Zang, F. H. Yu, X. K. Yu, "Optimization on Gateway Section of Soft Coal Seam and Hard Roof and Supporting Technology", Applied Mechanics and Materials, Vols. 90-93, pp. 622-625, 2011
Online since
September 2011
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Price
$32.00
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