摘要
Based on bolt mechanics model, main factors influencing bolting strength are analyzed. For soft rock roadways, less bolting capability and low bolting strength are main causes for bolt losing effective-ness. From the numerical simulation of rock bolt pull-test, the influence of bolting-grouting on the surrounding rock self-bearing capacity and bolt behavior is studied. Meanwhile the measures of enhancing bolting strength are advanced. Strong bolt combined with bolting-grouting can effectively control the deformation of soft rock roadways.
Based on bolt mechanics model, main factors influencing bolting strength are analyzed. For soft rock roadways, less bolting capability and low bolting strength are main causes for bolt losing effective-ness. From the numerical simulation of rock bolt pull-test, the influence of bolting-grouting on the surrounding rock self-bearing capacity and bolt behavior is studied. Meanwhile the measures of enhancing bolting strength are advanced. Strong bolt combined with bolting-grouting can effectively control the deformation of soft rock roadways.
