DOI: 10.11799/ce201712019
Study on weak surrounding rock deformation mechanism and control of 310 rail roadway in Xinzhi Coal Mine
NIU Wei-feng
Abstract：In view of the deformation of 310 rail roadway in Xinzhi Coal Mine,similar material model experiment and theoretical analysis were used to study the deformation mechanism of weak surrounding rock roadway,and the deformation and failure rules were revealed,then a combined supporting scheme of “bolt,cable,metal mesh,bolt grouting and concrete shotcreting” was put forward,which was verified by industrial field test.The research results show that the primary causes of full section deformation for weak surrounding rock roadway comprises roadway surrounding rock lithology,mining pressure and hydraulic action.At the same time,deformation of weak surrounding rock roadway is mainly creep deformation under the load condition,self-bearing capacity of surrounding rock is greatly improved by the combined support,and the deformation of weak surrounding rock roadway has been effectively controlled.The results can provide technical support for the mine safety and efficient production.
Keywords：weak surroundingsimilar material model experimentwater conditioningroadway deformationcombined support
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 73-76 )