Numerical analysis of the support scheme for the lower yard of Wangwa No.2 Mine
ZHAO Lixin
Abstract：The surrounding rock the crossheading in the lower part yard of Wangwa No.2 Mine is mainly mudstone and carbonaceous mudstone,which belong to weak roof and floor.The deformation and failure of surrounding rock were severe during roadway excavation,which had a serious impact on constrution.In order to keep the roadway stable during excavation,FLAC3D finite element difference software was used to analyze the surrounding rock stability of soft rock roadway under different sup-porting parameters and to determine the best supporting scheme.The results show that the deforma-tion and failure of surrounding rock could be effectively improved by changing the number,position and length of anchor bolt.The stability effect of each support design scheme was analyzed by numeri-cal simulation,and scheme 1 was selected as the best support design scheme of the roadway.
Keywords：FLAC3Dweak roof and floorurrounding rock deformationroadway supportnumerical simulation
Publication Date：2023-12-25
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 41-45 )