Grout and Anchor Coupling Support in Dynamic Pressure Impact Roadway with Large Deformation in Deep

摘要

The broken characters of roadway in deep in China were statistical analyzed. Taking unitlength anchor body as studying element, interrelations of the maximum shear force F_s max,cementation strength S_(bond) and confining pressures σ_c were analyzed, researched and development grouting cable, put forward grouting-anchor coupling support for surrounding rock control in deep. The relation between different water cement ratios (0.5:1-1:1), different grout pressures (0.5:1-1:1) and diffusion radius were analyzed by means of numerical software UDEC. The surrounding rock controlling problems of dynamic pressure impact and large deformation roadway in deep was solved in CHANGCUN mine of Lu'an coal mining area in China.