Research on dynamic stability classification of bolt support for super-long coal roadway roof
Abstract：According to the complex changing condition of the stability of coal roadway roof,combining with Shendong super-long coal roadway,large section roadway,complex changes of roof strata structure as well as engineering properties of bolts（cables） support,based on the scientific,practicality and quantitative selection principles of the stibility classification indexes of coal roadway roof,based on the deep analysis on affect factors of stability for bolts support coal roadway roof in Shendong diggings,distance to roof surface of the single thick strata L,strength σc and thickness D,span B and depth H of the coal roadway as well as the index of mining effect N were determined as classification parameters of the dynamic stability classification of super-long bolt support coal roadway roof in Shendong Diggings,and the BP neural network prediction model of dynamic stability classification of bolt support for super-long coal roadway roof in Shendong mining area was established,the recognition accuracy of the model is more than 95% by test,and the result of dynamic stability classification is highly anastomosed with the actual site.
Keywords：bolt supportsuper-longcoal roadway roofstabilitydynamic classification
Publication Date：2012-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 565-570 )