关键词: 巷道塌陷区, 拱桥锚注加固, 数值模拟, 声发射

Abstract: Based on the problem of main haulage roadway deformation instability in Linglong gold mine, the FLAC3D numerical simulation software was used for roadway anchor reinforcement mechanism of the injection of nonlinear deformation damage and arch bridge of solid-liquid coupling simulation. The arch anchor reinforcement technique parameters and process was discusses. The reinforcement effect of roadway was analyzed in field. The research results show that the protection pillar stolen postharvest leads to a large area of roadway surrounding rock tensile and shear damage zone. Through the anchor reinforcement, area of roadway deformation and destruction of arch bridge in the rock formed a bridge bearing structure, improve the bearing capacity of surrounding rock, based on the analysis of the measured section of roadway convergence conditions, the reinforced deformation of each section observation values are smaller, maximum deformation of only 6.47 mm, reinforcement effect can meet the roadway transportation demands very good.