DOI: 10.11799/ce201804010
Dynamic combined support technology of broken rock roadway under old goaf damage zone
DU Yun-hang
Abstract：Because upper layer of thick coal seam is affected by small coal mine, its roof structure is very complicated and mining of lower coal seam may have a significant adverse impact, which brings great influence to support of the mining roadway below. Aiming at the complexity of roof structure of return air roadway in 8101 integrated mine, roadway characteristics are classified and a dynamic roadway timbering principle is proposed. The optimization and selection of support parameters are carried out by means of theoretical analysis and numerical simulation, which finally determine the roadway to be supported by zoned dynamic support program, namely cable anchor support as main and shed support as a subsidy. Field practice shows that the deformation of surrounding rock is in a reasonable range and meet the requirements of safe production, which can provide reference for the similar condition.
Keywords：thick coal seamroof structurenumerical simulationzoned dynamic support
Publication Date：2018-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 35-38,42 )