Numerical Simulation Study on Roadway Loose Circle in No. 3 Coal Seam of Xiayukou Coal Mine
REN Haifeng
HU Junfeng
SUO Liang
Abstract：In order to obtain the thickness of the loose circle of the roadway in No. 3 coal seam in Xiayukou Mine, a roadway model was established by taking the actual mining roadway of 23305 working face as the example and using UDEC numerical simulation software. The assignment of coal-rock mechanical parameters of the model was carried out, its boundary condition was determined and the thickness of the loose circle of the roadway was obtained by simulation. For verifying the simulated result, an ultrasonic rock crack detector was used for the site measurement of the roadway, the measured thickness of the loose circle of the roadway was basically consistent with that obtained by numerical simulation, this indicated that the results of numerical simulation can be used as a reference for the measurement of the loose circle of a roadway.
Keywords：actual mining roadwayloose circlenumerical simulationmeasurement
Publication Date：2014-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 22-25 )