Abstract: In order to solve the problems of large deformation and support of high stress deep soft roadway, taking Xingdong ore-980 as an example, combined with field study, numerical calculation and field test, etc, the degree of the large deformation and deformation failure mechanism of surrounding rock have been analyzed. The causes of its failure have been summarized as follows: fracture development and strong sensitivity, high crustal stress, complex geological conditions and hydro-physical property, according to which, the research has indicated that ore-980 roadway is the stress dilatancy expansion type composite geological soft rock. The main reasons for the instability of ore-980 roadway have been found to be the development of surrounding rock fracture and the lower strength (under the high stress disturbance) leading to a wide range of breakage, together with the hydro-physical property, complex geological structures and rheological characteristics, resulting in the large deformation. Based on the above research，the multiple dimensions coupling support which is centered with high strength anchor, yieldable ring support and grouting reinforcement has been proposed, and surrounding rock coupling support mechanism and specific support form have been analyzed, and the design of parameters of concrete support has been done. Field practice has shown that after 60 d of expansion of ore-980 roadway, the convergence rate of surrounding drops 1 mm/d with roof subsidence reaching 193 mm, roadway’s side deformation reaching 114 mm, floor heave reaching 151 mm，which has achieved the goal of effective control of deep roadway with soft surrounding rock.

Key words: soft rock roadway, deep mine, deformation failure mechanism, multiple dimensions coupling support