Study on Deformation Mechanism and Stability Control of Large Cross Section Intersection in Deep Mine
WANG Jiong
SUN XiaoMing
HAO Yuxi
GUO Zhibiao
MENG Zhigang
Abstract：In order to solve the difficult support problem of No. 3 intersection of deep large cross section in Jiahe Mine,the paper analyzed the major causes of the deformation failure in No. 3 intersection were the high ground stress,mining and excavation turbulence and the uncoupling between the surrounding rock strength and structure.A coupling support technology of bolt/steel mesh/shotcreting+anchor+floor corner bolt+double control anchor in middle rock pillar was provided.The site application showed that after the coupling support applied, a max roof and floor convergence of No. 3 intersection was 69 mm,a max convergence of the two sidewalls was 45 mm and the deformation of No. 3 intersection was effectively controlled.
Keywords：deep minelarge cross section intersectiondeformation mechanismcoupling supportsurrounding rock stability
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( 13-16 )