Deformation characteristics and stability analysis of roof roadway in destressed mining
Abstract：First zoning deformation characteristics of roof roadway were analyzed by physically simulating roof strata movement.Then zoning fracture distribution of surrounding rock subject to mining activities was tracked by drilling in-situ long-distance boreholes in Taoyuan Coal Mine.A 165-day stabilization period of the overlying strata was also concluded according to the field test results.Lastly the optimum section shape of the roadway and 4.0~6.0 m effective enhancing depth of the floor under different lateral pressure coefficients and varying mining-induced stress conditions were evolved by adopting commercial FLAC codes.These provide fundamental principles and methods for roof roadway support in destressed zones.
Keywords：destressed miningroof roadwayzoning of mining-induced fracturesstability control
Publication Date：2011-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)