COAL ENGINEERING ›› 2014, Vol. 46 ›› Issue (4): 87-89.doi: 10.11799/ce201404030

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The Correlation of Rock Mass Structure Type and the Stability of Surrounding Rock of Roadway

  

  • Received:2013-06-12 Revised:2013-08-01 Online:2014-04-11 Published:2014-04-10
  • Supported by:

    Study on the equilibrium principle of roadway surrounding rock & support and the stability control including the large deformation

Abstract:

According to coal mine reserve area bottom strata thickness change is big, the characteristic of diversity of rock mass structure, starting from the structure of rock mass classification, through the analysis of the stress characteristics and damage of roadway area distribution characteristics study of the stability of roadway under different rock mass structural characteristics. Research results show that the roadway stability under the same conditions for overall structure > layer structure > blocks > > rupture structure medium structure; Rock mass structure size of roadway surrounding rock stability classification is an important index; The stability of surrounding rock of roadway and the mathematical relationship between rock fragmentation size as (公式) . The research results for classification of surrounding rock of roadway and roadway support theory know what significance.

Key words: rock mass structure, roadway, stability of surrounding rock, numerical simulation