Numerical Analysis and Control Study on Surrounding Rock Deformation of Deep Soft Rock Roadway

Aiming at the problem of large-scale deformation track and alleys in East Second Mining Area, numerical analysis method is used to analyze stress law roadway. The results show that critical depth roadway 800m, shear deep about 8.7MPa left right shoulders, vertical increases sharply range 0~5.5m from center roadway, 6~ peak value reached within 8m, plastic zone roof 2.6m, zones are 5.2m 5.4m, respectively, floor 6.1m. This result can provide a basis for design parameters soft rock support. engineering practice proves support effectively controls strong achieves better effect.