Abstract: Aiming at the problems of severe deformation of surrounding rock,large amount of repeated maintenance and floor heave protrusion in large embedded depth large section soft rock roadway,combining with engineering practice,deformation mechanism of roadway floor heave is analyzed,and the deformation and failure law and influencing factors were studied by numerical simulation method.Treatment scheme of uphill floor heave in large section soft rock was proposed and the design parameters of bolt-grouting combined support technique were determined.Field application shows that the controlling floor heaves means of using anchor and floor grouting bolting and channel steel coupling support can effectively control the deformation of roadway floor heaves,which achieve good control effect of rock.