Abstract: In order to control the stability of roadway surrounding rock, the whole section grouting technology is proposed. Through theoretical study, numerical simulation and engineering practice, the floor heave mechanism is analyzed and the best supporting scheme is determined. Research shows that the floor heave of high stress soft rock inclined roadway is due to the release of internal potential energy after rib-sides rock slip, causing the accumulation of roadway floor rock elastic-plastic potential energy. The arch roadway section and whole section bolting, effectively control the growth of roadway floor heave, and the large deformation of surrounding rock is also fully controlled in roadway roof and lib-sides, which ensures the stability of roadway surrounding rock.